CN111227814A - Method and device for analyzing arterial state - Google Patents
Method and device for analyzing arterial state Download PDFInfo
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- CN111227814A CN111227814A CN202010115603.1A CN202010115603A CN111227814A CN 111227814 A CN111227814 A CN 111227814A CN 202010115603 A CN202010115603 A CN 202010115603A CN 111227814 A CN111227814 A CN 111227814A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/02108—Measuring pressure in heart or blood vessels from analysis of pulse wave characteristics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/026—Measuring blood flow
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7271—Specific aspects of physiological measurement analysis
Abstract
Embodiments of the present application provide an analysis and apparatus of arterial status. The method for analyzing the state of the artery comprises the following steps: acquiring a pulse waveform of an artery to be analyzed and a pulse wave amplitude envelope line of a sphygmomanometer; matching the pulse waveform with a waveform of a normal pulse to determine a blood flow resistance state corresponding to the pulse waveform; determining the envelope type of the pulse wave amplitude envelope of the sphygmomanometer based on the shape of the pulse wave amplitude envelope of the sphygmomanometer; and comprehensively determining the state of the artery according to the blood flow resistance state and the envelope type. According to the technical scheme of the embodiment of the application, the artery state is jointly analyzed from two aspects of the pulse waveform and the pulse wave amplitude envelope curve of the sphygmomanometer, and the accuracy of artery state analysis is improved.
Description
Technical Field
The application relates to the field of computers, in particular to an artery state analysis device.
Background
The periodic contraction and relaxation of the heart results in rhythmic intermittent ejection of blood, which causes high and low pulsation of blood pressure in the artery and oscillation of the artery wall with time expansion and contraction, which gradually affect and affect the entire arterial vasculature. This pulsation with the intermittent contraction and relaxation of the heart, blood pressure, blood flow velocity and blood flow volume, and the propagation of deformations and vibrations of the vessel walls in the vascular system.
Numerous studies have found that hypertension and the early stages of atherosclerosis are not generally felt by many people and therefore accurate results cannot be obtained by detection and analysis.
Disclosure of Invention
Embodiments of the present application provide an analysis and apparatus of an arterial status, which may further improve the accuracy of the arterial status analysis at least to some extent.
Other features and advantages of the present application will be apparent from the following detailed description, or may be learned by practice of the application.
According to an aspect of an embodiment of the present application, there is provided an analysis method of an arterial status, including: acquiring a pulse waveform of an artery to be analyzed and a pulse wave amplitude envelope line of a sphygmomanometer; matching the pulse waveform with a waveform of a normal pulse to determine a blood flow resistance state corresponding to the pulse waveform; determining the envelope type of the pulse wave amplitude envelope of the sphygmomanometer based on the shape of the pulse wave amplitude envelope of the sphygmomanometer; and comprehensively determining the state of the artery according to the blood flow resistance state and the envelope type.
In some embodiments of the present application, based on the foregoing solution, the matching the pulse waveform with a waveform of a normal pulse to determine a blood flow resistance state corresponding to the pulse waveform includes: identifying a first waveform corresponding to a main wave, a second waveform corresponding to a tidal wave and a third waveform corresponding to a repeating wave from the pulse waveforms; matching the first waveform, the second waveform and the third waveform with corresponding waveforms of normal pulse waveforms respectively to obtain matching results of the waveforms; and comprehensively determining the blood flow resistance state according to the matching result of each waveform.
In some embodiments of the present application, based on the foregoing solution, the determining the envelope type of the pulse wave amplitude envelope of the sphygmomanometer based on the shape of the pulse wave amplitude envelope of the sphygmomanometer includes: fitting the pulse wave amplitude envelope of the sphygmomanometer to obtain a fitted graph; estimating an approximate arteriosclerosis index value corresponding to the fitted graph according to the shape of the fitted graph; and determining the envelope type according to the parameter range of the approximate arteriosclerosis index value.
In some embodiments of the present application, based on the foregoing scheme, said estimating, according to the shape of the fitted graph, an approximate arteriosclerosis index value corresponding to the fitted graph includes: matching the fitting graph with a normal graph corresponding to an envelope curve of normal blood pressure to obtain a matching degree; and estimating the approximate arteriosclerosis index value according to the matching degree.
In some embodiments of the present application, based on the foregoing scheme, the blood flow resistance state includes a low blood flow resistance state, a medium blood flow resistance state, a high blood flow resistance state, and a very high blood flow resistance state; wherein, in the low blood flow resistance state, the amplitude of the main wave is greater than a first amplitude threshold value, the width is less than a width threshold value, and the amplitude of the tidal wave is less than a second amplitude threshold value; the amplitude of the tidal wave is greater than a fourth amplitude threshold and the amplitude of the dicrotic wave is less than a fifth amplitude threshold in the state of the blood flow resistance; in the high blood flow resistance state, the amplitude of the tidal wave is greater than a sixth amplitude threshold, a fusion region exists between the main wave and the repeating wave, and the amplitude of the repeating wave is less than a seventh amplitude threshold; in the blood flow resistance extremely high state, the main wave and the tidal wave are fused, the amplitude of the wave obtained by fusion is larger than an eighth amplitude threshold value, and the tidal wave and the dicrotic wave are fused;
the comprehensively determining the state of the artery according to the blood flow resistance state and the envelope type comprises: when the envelope type is a first type corresponding to normal blood pressure, if the blood flow resistance state is a low blood flow resistance state or a medium blood flow resistance state, determining that the artery is in a normal state; when the envelope type is the first type, if the blood flow resistance state is a high blood flow resistance state, determining that the state is in the arteriosclerosis degree; and when the envelope type is the first type, if the blood flow resistance state is a blood flow resistance extremely high state, determining that the state is an arteriosclerosis degree high state.
In some embodiments of the present application, based on the foregoing scheme, the determining the state of the artery based on the blood flow resistance state and the envelope type includes: when the envelope type is a second type corresponding to the critical blood pressure, if the blood flow resistance state is the low blood flow resistance state, determining that the artery is in a normal state; when the envelope type is the second type, if the blood flow resistance state is the medium blood flow resistance state, determining that the degree of arteriosclerosis is low; when the envelope type is the second type, if the blood flow resistance state is the high blood flow resistance state, determining that the state is in the arteriosclerosis degree; and when the envelope type is the second type, if the blood flow resistance state is the blood flow resistance extremely high state, determining that the degree of arteriosclerosis is high.
In some embodiments of the present application, based on the foregoing scheme, the determining the state of the artery based on the blood flow resistance state and the envelope type includes: when the envelope type is a third type corresponding to arrhythmia combined with arteriosclerosis, if the blood flow resistance state is the low blood flow resistance state, determining that the arteriosclerosis degree is low; when the envelope type is the third type, if the blood flow resistance state is the blood flow resistance medium state, determining that the state is in the arteriosclerosis degree; when the envelope type is the third type, if the blood flow resistance state is the high blood flow resistance state, determining that the degree of arteriosclerosis is high; and when the envelope type is the third type, if the blood flow resistance state is the blood flow resistance extremely high state, determining that the degree of arteriosclerosis is extremely high.
In some embodiments of the present application, based on the foregoing scheme, the determining the state of the artery based on the blood flow resistance state and the envelope type includes: when the envelope type is a fourth type corresponding to a high hardening degree, if the blood flow resistance state is the low blood flow resistance state or the medium blood flow resistance state, determining that the state is in the arteriosclerosis degree; and when the envelope type is the fourth type, if the blood flow resistance state is the high blood flow resistance state or the extremely high blood flow resistance state, determining that the degree of arteriosclerosis is extremely high.
In some embodiments of the present application, based on the foregoing scheme, the determining the state of the artery based on the blood flow resistance state and the envelope type includes: when the envelope type is a fifth type corresponding to vascular sclerosis combined with cardiac function impairment, if the blood flow resistance state is the low blood flow resistance state or the medium blood flow resistance state, determining that the degree of arteriosclerosis is high; and when the envelope type is the fifth type, if the blood flow resistance state is the high blood flow resistance state or the extremely high blood flow resistance state, determining that the degree of arteriosclerosis is extremely high.
According to an aspect of an embodiment of the present application, there is provided an apparatus for analyzing an arterial status, including: the acquisition unit is used for acquiring the pulse waveform of an artery to be analyzed and the pulse wave amplitude envelope line of the sphygmomanometer; the waveform unit is used for matching the pulse waveform with the waveform of normal pulse and determining the blood flow resistance state corresponding to the pulse waveform; the envelope unit is used for determining the envelope type of the pulse wave amplitude envelope of the sphygmomanometer based on the shape of the pulse wave amplitude envelope of the sphygmomanometer; a determination unit for determining the state of the artery comprehensively according to the blood flow resistance state and the envelope type.
In some embodiments of the present application, based on the foregoing scheme, the waveform unit includes: identifying a first waveform corresponding to a main wave, a second waveform corresponding to a tidal wave and a third waveform corresponding to a repeating wave from the pulse waveforms; matching the first waveform, the second waveform and the third waveform with corresponding waveforms of normal pulse waveforms respectively to obtain matching results of the waveforms; and comprehensively determining the blood flow resistance state according to the matching result of each waveform.
In some embodiments of the present application, based on the foregoing scheme, the envelope unit includes: the fitting unit is used for fitting the pulse wave amplitude envelope curve of the sphygmomanometer to obtain a fitting graph; the estimation unit is used for estimating an approximate arteriosclerosis index value corresponding to the fitting graph according to the shape of the fitting graph; and the type determining unit is used for determining the envelope type according to the parameter range in which the approximate arteriosclerosis index value is positioned.
In some embodiments of the present application, based on the foregoing scheme, the estimation unit includes: matching the fitting graph with a normal graph corresponding to an envelope curve of normal blood pressure to obtain a matching degree; and estimating the approximate arteriosclerosis index value according to the matching degree.
In some embodiments of the present application, based on the foregoing scheme, the blood flow resistance state includes a low blood flow resistance state, a medium blood flow resistance state, a high blood flow resistance state, and a very high blood flow resistance state; wherein, in the low blood flow resistance state, the amplitude of the main wave is greater than a first amplitude threshold value, the width is less than a width threshold value, and the amplitude of the tidal wave is less than a second amplitude threshold value; the amplitude of the tidal wave is greater than a fourth amplitude threshold and the amplitude of the dicrotic wave is less than a fifth amplitude threshold in the state of the blood flow resistance; in the high blood flow resistance state, the amplitude of the tidal wave is greater than a sixth amplitude threshold, a fusion region exists between the main wave and the repeating wave, and the amplitude of the repeating wave is less than a seventh amplitude threshold; in the blood flow resistance extremely high state, the main wave and the tidal wave are fused, the amplitude of the wave obtained by fusion is larger than an eighth amplitude threshold value, and the tidal wave and the dicrotic wave are fused;
in some embodiments of the present application, based on the foregoing scheme, the determining unit includes: when the envelope type is a first type corresponding to normal blood pressure, if the blood flow resistance state is a low blood flow resistance state or a medium blood flow resistance state, determining that the artery is in a normal state; when the envelope type is the first type, if the blood flow resistance state is a high blood flow resistance state, determining that the state is in the arteriosclerosis degree; and when the envelope type is the first type, if the blood flow resistance state is a blood flow resistance extremely high state, determining that the state is an arteriosclerosis degree high state.
In some embodiments of the present application, based on the foregoing scheme, the determining unit includes: when the envelope type is a second type corresponding to the critical blood pressure, if the blood flow resistance state is the low blood flow resistance state, determining that the artery is in a normal state; when the envelope type is the second type, if the blood flow resistance state is the medium blood flow resistance state, determining that the degree of arteriosclerosis is low; when the envelope type is the second type, if the blood flow resistance state is the high blood flow resistance state, determining that the state is in the arteriosclerosis degree; and when the envelope type is the second type, if the blood flow resistance state is the blood flow resistance extremely high state, determining that the degree of arteriosclerosis is high.
In some embodiments of the present application, based on the foregoing scheme, the determining unit includes: when the envelope type is a third type corresponding to arrhythmia combined with arteriosclerosis, if the blood flow resistance state is the low blood flow resistance state, determining that the arteriosclerosis degree is low; when the envelope type is the third type, if the blood flow resistance state is the blood flow resistance medium state, determining that the state is in the arteriosclerosis degree; when the envelope type is the third type, if the blood flow resistance state is the high blood flow resistance state, determining that the degree of arteriosclerosis is high; and when the envelope type is the third type, if the blood flow resistance state is the blood flow resistance extremely high state, determining that the degree of arteriosclerosis is extremely high.
In some embodiments of the present application, based on the foregoing scheme, the determining unit includes: when the envelope type is a fourth type corresponding to a high hardening degree, if the blood flow resistance state is the low blood flow resistance state or the medium blood flow resistance state, determining that the state is in the arteriosclerosis degree; and when the envelope type is the fourth type, if the blood flow resistance state is the high blood flow resistance state or the extremely high blood flow resistance state, determining that the degree of arteriosclerosis is extremely high.
In some embodiments of the present application, based on the foregoing scheme, the determining unit includes: when the envelope type is a fifth type corresponding to vascular sclerosis combined with cardiac function impairment, if the blood flow resistance state is the low blood flow resistance state or the medium blood flow resistance state, determining that the degree of arteriosclerosis is high; and when the envelope type is the fifth type, if the blood flow resistance state is the high blood flow resistance state or the extremely high blood flow resistance state, determining that the degree of arteriosclerosis is extremely high.
According to an aspect of embodiments of the present application, there is provided a computer-readable medium, on which a computer program is stored, which, when being executed by a processor, implements the method of analyzing arterial status as described in the above embodiments.
According to an aspect of an embodiment of the present application, there is provided an electronic device including: one or more processors; a storage device for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to implement the method of analyzing arterial status as described in the above embodiments.
In the technical scheme provided by some embodiments of the application, the pulse waveform of an artery to be analyzed and the pulse wave amplitude envelope curve of a sphygmomanometer are obtained; the pulse waveform is matched with the waveform of normal pulse to determine the blood flow resistance state corresponding to the pulse waveform, the envelope type of the pulse wave amplitude envelope of the sphygmomanometer is determined based on the shape of the pulse wave amplitude envelope of the sphygmomanometer, finally the state of an artery is comprehensively determined according to the blood flow resistance state and the envelope type, and the artery state is jointly analyzed from two aspects of the pulse waveform and the blood pressure envelope, so that the accuracy of artery state analysis is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In the drawings:
FIG. 1 shows a flow chart of a method of analyzing arterial status to which embodiments of the present application may be applied;
FIG. 2 schematically shows a schematic diagram of a pulse waveform according to an embodiment of the present application;
FIG. 3 schematically shows a schematic diagram of a sphygmomanometer pulse wave amplitude envelope according to one embodiment of the present application;
FIG. 4 schematically illustrates a flow chart for determining a blood flow resistance state corresponding to a pulse waveform according to an embodiment of the present application;
FIG. 5 schematically illustrates a diagram of pulse waveforms in various states according to an embodiment of the present application;
FIG. 6 schematically illustrates an envelope type for determining a pulse wave amplitude envelope of a sphygmomanometer in accordance with one embodiment of the present application;
fig. 7 schematically shows a block diagram of an apparatus for analyzing arterial status according to an embodiment of the present application.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
With the improvement of living standard of people and the change of dietary structure, the morbidity and mortality of various cardiovascular and cerebrovascular diseases related to arteriosclerosis are higher and higher, and the diseases become main diseases harmful to human health. In the early stage of arteriosclerosis, patients often have no subjective symptoms, but a series of indexes such as vascular resistance, vascular elasticity, blood viscosity and the like are actually changed, and the current detection method commonly used in clinic can only make a definite diagnosis when the lesion degree is deep, and is expensive. If the disease can be timely discovered through simple non-invasive detection, the early prevention and treatment can be carried out, and the incidence rate and the treatment difficulty of the cardiovascular and cerebrovascular diseases can be greatly reduced. The traditional Chinese medicine considers that the pulse wave contains a large amount of physiological and pathological information of a human body, and modern researches also find that the pulse wave carries a large amount of information of the whole blood circulation system. Therefore, the quantitative research on the human pulse signals can find out the characteristic information of arteriosclerosis in the pulse waves, and the noninvasive pulse detection can be used for realizing the early diagnosis of cardiovascular and cerebrovascular diseases, thereby having important academic value and social significance. The household sphygmomanometer and/or oximeter can accurately measure the pulse waveform, and by integrating the judging method provided by the patent into the software algorithm of the product, a family user or a doctor can conveniently know whether the detected person has arteriosclerosis, so that the disease can be known and prevented in advance.
Fig. 1 shows a flow chart of an analysis method of an arterial state according to an embodiment of the present application, which may be performed by an analysis device of a pulse wave amplitude envelope of a sphygmomanometer. Referring to fig. 1, the method for analyzing the arterial status at least includes steps S110 to S140, which are described in detail as follows:
in step S110, a pulse waveform of an artery to be analyzed and a pulse wave amplitude envelope of a sphygmomanometer are obtained.
In an embodiment of the present application, the pulse waveform may be obtained by a pulse waveform device, such as a blood pressure meter, which is not limited herein. The pulse wave is generated due to the periodic contraction of the heart. When the ventricle contracts, blood is injected into the artery, so that the pressure in the artery suddenly rises and the volume is increased, and the wall of the artery expands; and at the slow ejection period, the arterial pressure begins to drop, and the vessel wall elastically retracts. The arterial wall is periodically retracted and relaxed along with the relaxation of the ventricle, and pulse is formed. The pulse starts at the root of the artery and makes a wave-like spread along the wall of the artery.
The pulse waveform diagram of the present embodiment can be shown in fig. 2, and the pulse waveform diagram is composed of a group of wave groups and intervals between the waves.
Specifically, the S-point, the start-firing point, is the lowest point of the overall pulse waveform map, which marks the beginning of the rapid ejection phase of the heart, and mainly reflects the pressure and volume in the blood vessel at the end of the systole.
For the P1 wave, the dominant wave, is the highest wave in the overall pulse waveform plot. The dominant peak reflects the maximum of pressure and volume within the artery. The ascending branch of the main wave reflects rapid ejection of blood from the ventricle, rapid rise of arterial pressure, and sudden expansion of the vessel wall, and the ascending speed is mainly related to cardiac output, ventricular ejection speed, arterial resistance and vessel wall elasticity, and can be represented by the ascending branch slope. If the cardiac output is large, the ejection speed is high, the elasticity of the artery is reduced, the slope is large, and the amplitude is high; if the cardiac output is less, the ejection speed is slower, the elasticity of the artery is larger, the slope is reduced, and the amplitude is lower.
For the P2 wave, the tidal wave, located in the descending branch of the oscillogram generally lingers behind the main wave, below the main wave and above the dicrotic wave. It is a reflected wave formed by stopping ejection of blood from ventricle, expanding artery, lowering blood pressure and making blood in artery reversely flow in the late stage of slow ejection period, and is mainly related to the change speed of peripheral resistance, blood vessel elasticity and descending speed of descending branch.
For point C, the dicrotic notch, also known as the descending isthmus, is the demarcation point between the descending branch of the main wave and the ascending branch of the dicrotic wave. It is also the dividing point between systole and diastole and is susceptible to peripheral resistance and descending speed of descending branches.
For the P3 wave, the heavy wave, also called the descending wave, is a prominent wavelet located after the point C, and it is formed that after the ventricular slow ejection period, the ventricle begins to relax, the ventricular pressure rapidly drops to a value significantly lower than the arterial pressure, and the blood in the artery begins to flow back to the ventricle. The valve suddenly closes due to the impact of the returning blood. The blood flowing back hits the suddenly closed valve and is rebounded back, so that the arterial pressure slightly rises again, and the wall of the artery slightly expands. Thus, an upward wavelet, i.e., a downwave, is formed in the middle of the downpipe. It can reflect the functional status of the valve, the elasticity of the blood vessels and the flow state of the blood stream.
In one embodiment of the present application, in the process of measuring the blood pressure of a human body by using a cuff type sphygmomanometer, the characteristic changes of the pulse wave pressure curve and the overall waveform (i.e. the pulse wave amplitude envelope curve of the sphygmomanometer) are important basis for evaluating the physiological state of the cardiovascular system of the human body. In this embodiment, the pulse wave amplitude envelope of the sphygmomanometer may be obtained by the sphygmomanometer.
The pulse wave amplitude envelope of the sphygmomanometer of the present embodiment is shown in fig. 3, and stage i is that the cuff pressure exceeds the systolic pressure; stage II, the cuff pressure is between the systolic pressure and the average pressure; stage III is that the cuff pressure is between the mean pressure and the diastolic pressure; stage iv is cuff pressure below diastolic pressure.
In one embodiment of the present application, when the pulse wave propagates from the heart to the arterial system, it is not only influenced by the heart itself, but also by various physiological factors flowing through the arteries and branches, such as vascular resistance, elasticity of the vessel wall, and blood viscosity, which are reflected on the waveform of the pulse wave, and if the elasticity of the arteries is good, the envelope curve shows steeply; the envelope behaves very smoothly if the arteries are not elastic.
In step S120, the pulse waveform is matched with the waveform of the normal pulse, and the blood flow resistance state corresponding to the pulse waveform is determined.
In an embodiment of the present application, as shown in fig. 4, the process of matching the pulse waveform with the waveform of the normal pulse in step S120 to determine the blood flow resistance state corresponding to the pulse waveform includes the following steps S410 to S430, which are described in detail as follows:
in step S410, a first waveform corresponding to a main wave, a second waveform corresponding to a tidal wave, and a third waveform corresponding to a dicrotic wave are identified from the pulse waveforms.
In an embodiment of the present application, a first waveform corresponding to a main wave, a second waveform corresponding to a tidal wave, and a third waveform corresponding to a repeating wave are identified and obtained according to a variation of a pulse waveform based on a floating condition of a normal pulse in fig. 2.
In step S420, the first waveform, the second waveform, and the third waveform are respectively matched with the corresponding waveforms of the normal pulse waveform to obtain the matching result of each waveform.
In an embodiment of the present application, different pulse states correspond to different waveform situations in the first waveform, the second waveform, and the third waveform in one pulse waveform. In this embodiment, the first waveform, the second waveform and the third waveform are respectively matched with the corresponding waveforms of the normal pulse to obtain the matching result of each waveform.
In an embodiment of the present application, in order to ensure the identification effect corresponding to each band, the embodiment respectively performs matching on three different bands. The specific matching mode may be that a distance between a feature point of each current waveform and a feature point corresponding to the normal waveform is calculated, and a matching degree between the two is determined according to the distance, so that a difference between the current waveform and the normal waveform is measured according to the matching degree to obtain a matching result.
In step S430, the blood flow resistance state is determined comprehensively from the matching results of the waveforms.
In one embodiment of the present application, as the degree of arteriosclerosis increases, the waveform of the pulse wave changes as shown in fig. 5. When the peripheral resistance of the human body and the degree of hardening of the blood vessel wall increase, the dynamic change of the waveform characteristic quantity is reflected on the gradual decrease of the absolute height of the main wave. Second, the wave becomes increasingly apparent from the lack of visibility, and its position relative to the main wave also increases gradually, approaching and merging with the main wave to a different extent from the posterior to the anterior, even beyond the main wave. Meanwhile, the heavy pulsation wave and the main wave are gradually integrated.
Based on the above trend, the present embodiment proposes an analysis method for analyzing the state of the artery based on the shape of the pulse waveform, which includes the following steps:
and if the first matching result is that the amplitude of the first waveform is larger than a first amplitude threshold value, the width is smaller than a width threshold value, the second matching result is that the amplitude of the second waveform is smaller than a second amplitude threshold value, and the third matching result is that the amplitude of the third waveform is larger than a third amplitude threshold value, the arterial state corresponding to the pulse waveform is determined to be a low blood flow resistance state.
And if the second matching result is that the amplitude of the second waveform is larger than a fourth amplitude threshold value and the third matching result is that the amplitude of the third waveform is smaller than a fifth amplitude threshold value, determining that the artery state corresponding to the pulse waveform is in the blood flow resistance state.
And if the second matching result is that the amplitude of the second waveform is larger than a sixth amplitude threshold, a fusion area exists between the first waveform and the third waveform, and the amplitude of the third waveform is smaller than a seventh amplitude threshold, determining that the arterial state corresponding to the pulse waveform is a high blood flow resistance state.
And if the first matching result is that the first waveform and the second waveform are fused, the amplitude of the fused wave is larger than an eighth amplitude threshold value, and the third matching result is that the second waveform and the third waveform are fused, determining that the artery state corresponding to the pulse waveform is a state with extremely high blood flow resistance.
Fig. 5 is a schematic diagram of pulse waveforms under various conditions according to an embodiment of the present application.
As shown in fig. 5, in one embodiment of the present application, the pulse waves can be classified into four types according to the degree of arteriosclerosis by statistical classification:
1) low blood flow resistance type (a): the dominant wave appears to be high and narrow in normal people, the tidal wave after the dominant wave is not obvious, the heavy wave is obvious, the vascular resistance is low, and the elasticity of the artery is good. Generally healthy young people, pregnant women, people affected by taking vasodilator drugs;
2) medium resistance to blood flow (b): for patients with mild arteriosclerosis, the tidal wave after the main wave is gradually raised, the dicrotic wave is not obvious, and the vascular resistance and the elasticity of the artery are moderate. Generally healthy middle-aged and young-aged;
3) high blood flow resistance type (c): for patients with moderate arteriosclerosis, the tidal wave after the main wave is prominent, and is fused with the main wave and the counterpulsation wave to different degrees, the counterpulsation wave becomes flat and is not easy to distinguish, and the vascular resistance and the elasticity of the artery are poor. Generally, the patients are elderly people with high age, patients with hypertension and arteriosclerosis, patients with high blood viscosity or people affected by vasoconstrictor;
4) blood flow resistance extremely high type (d): in severe arteriosclerosis patients, the dominant wave and the backward wave merge and exceed the dominant wave, the severe wave and the tidal wave are mixed into a whole, the vascular resistance is very large, and the elasticity of the artery is very poor. Patients with severe hypertension and arteriosclerosis are common.
In step S130, the envelope type of the blood pressure meter pulse wave amplitude envelope is determined based on the shape of the blood pressure meter pulse wave amplitude envelope.
In an embodiment of the present application, as shown in fig. 6, the process of determining the envelope type of the blood pressure meter pulse wave amplitude envelope based on the shape of the blood pressure meter pulse wave amplitude envelope in step S130 includes the following steps S610 to S630, which are described in detail as follows:
in step S610, a fitting graph is obtained by fitting the pulse wave amplitude envelope of the sphygmomanometer.
In an embodiment of the present application, when performing fitting, an overall fitting mode may be adopted, and a piecewise fitting mode may also be adopted. The fitting function may be a gaussian function, a polynomial function, or the like, or an appropriate fitting function may be automatically selected according to a certain criterion (such as mean square error).
In step S620, an approximate arteriosclerosis index value corresponding to the fitting graph is estimated according to the shape of the fitting graph.
In an embodiment of the present application, the process of estimating an approximate arteriosclerosis index value corresponding to the fitting graph according to the shape of the fitting graph in step S620 includes the following steps:
matching the fitting graph with a normal graph corresponding to an envelope curve of the normal blood pressure to obtain a matching degree;
and estimating an approximate arteriosclerosis index value according to the matching degree.
In this embodiment, the graph corresponding to the envelope of the pulse wave amplitude of the normal sphygmomanometer is in a shape of normal distribution, and when the matching degree is calculated, the fitting graph may be matched with the normal graph corresponding to the normal envelope, the euclidean distance between the feature points in the fitting graph and the feature points in the positive tai distribution graph is calculated, and the euclidean distance is determined as the matching degree.
In step S630, the envelope type is determined according to the parameter range in which the approximate arteriosclerosis index value is located.
In one embodiment of the present application, identifying a first stage, a second stage, a third stage, and a fourth stage in a pulse wave amplitude envelope of a sphygmomanometer comprises: according to the pulse wave amplitude envelope curve of the sphygmomanometer, determining cuff pressure, systolic pressure, average pressure and diastolic pressure; identifying a corresponding stage when the cuff pressure in the pulse wave amplitude envelope line of the sphygmomanometer is greater than the systolic pressure as a first stage; identifying a corresponding stage of the sphygmomanometer when the cuff pressure in the pulse wave amplitude envelope curve of the sphygmomanometer is between the systolic pressure and the average pressure as a second stage; identifying a corresponding stage when the cuff pressure in the pulse wave amplitude envelope curve of the sphygmomanometer is between the average pressure and the diastolic pressure as a third stage; and identifying the corresponding stage of the sphygmomanometer when the cuff pressure in the pulse wave amplitude envelope curve is less than the diastolic pressure as a fourth stage.
In an embodiment of the application, after the first stage, the second stage, the third stage and the fourth stage are determined, the approximate arteriosclerosis index value corresponding to the fitting graph is estimated according to the region corresponding to the first stage, the region corresponding to the second stage, the region corresponding to the third stage and the region corresponding to the fourth stage in the fitting graph.
Specifically, as shown in table 1, table 1 shows the approximate arteriosclerosis index value AAI corresponding to different sphygmomanometers pulse wave amplitude envelope waveforms and the reflected arterial blood flow condition or arteriosclerosis degree.
TABLE 1 sphygmomanometers pulse wave amplitude envelope waveform analysis
Specifically, in the first case, if the combination of the region corresponding to the second stage and the region corresponding to the third stage in the fitted graph is a triangle, and the height of the triangle is greater than the first threshold, the approximate arteriosclerosis index value is estimated to be the first class value, optionally, the first class value in this embodiment is 0 to 2.5;
in the second case, if the height of the triangle is smaller than the second threshold, the approximate arteriosclerosis index value is estimated to be the second type value, and optionally, the second type value is 2.6-4 in this embodiment.
In the third case, if the combination of the region corresponding to the second stage and the region corresponding to the third stage in the fitted graph is a trapezoid, and the slope of the region corresponding to the fourth stage is in a decreasing trend, the approximate arteriosclerosis index value is estimated to be a third value, optionally, the third value in this embodiment is 4.1-6.5.
In a fourth case, if the combination of the region corresponding to the second stage and the region corresponding to the third stage in the fitted graph is extremely irregular, the estimated approximate arteriosclerosis index value is a fourth-type value, and optionally, the fourth-type value in this embodiment is 6.6 to 8.
In a fifth case, if at least two peak shapes exist in the region corresponding to the second stage and the region corresponding to the third stage in the fitted graph in total, and the slope of the region corresponding to the fourth stage is in a decreasing trend, the approximate arteriosclerosis index value is estimated to be a fifth value, optionally, the fifth value in this embodiment is greater than 8.
In one embodiment of the application, after the approximate arteriosclerosis index value is determined, the envelope type corresponding to the approximate arteriosclerosis index value is determined according to a preset parameter range. As shown in table 1, the envelope types in the present embodiment include A, B, C, E five types, each corresponding to different degrees of vascular sclerosis, which gradually increase in turn.
In step S140, the state of the artery is determined comprehensively from the state of the blood flow resistance and the envelope type.
In one embodiment of the present application, the process of comprehensively determining the state of an artery from the state of blood flow resistance and the envelope type is shown in table 2:
TABLE 2 arterial status at different states of blood flow resistance, envelope type
In an embodiment of the present application, based on the determination method in table 2, a specific determination method is:
when the envelope type is a second type corresponding to the critical blood pressure, if the blood flow resistance state is a low blood flow resistance state, the artery is judged to be in a normal state; if the blood flow resistance state is the middle state of the blood flow resistance, judging that the arteriosclerosis degree is low; if the blood flow resistance state is a high blood flow resistance state, determining that the artery is in the hardening degree; if the blood flow resistance state is a state of extremely high blood flow resistance, it is determined that the degree of arteriosclerosis is high.
When the envelope type is a third type corresponding to arrhythmia and vascular sclerosis, if the blood flow resistance state is a low blood flow resistance state or a medium blood flow resistance state, determining that the degree of arterial arteriosclerosis is low; if the blood flow resistance state is a high blood flow resistance state, judging that the arteriosclerosis degree is high; if the blood flow resistance state is a state in which the blood flow resistance is extremely high, it is determined that the degree of arteriosclerosis is extremely high.
When the envelope type is a fourth type corresponding to a high hardening degree, if the blood flow resistance state is a low blood flow resistance state or a medium blood flow resistance state, the artery is judged to be in the hardening degree; when the envelope type is the fourth type, if the blood flow resistance state is a high blood flow resistance state or a very high blood flow resistance state, it is determined that the degree of arterial arteriosclerosis is very high.
When the envelope type is a fifth type corresponding to vascular sclerosis combined with cardiac function defect, if the blood flow resistance state is a low blood flow resistance state or a medium blood flow resistance state, determining that the degree of arterial arteriosclerosis is high; when the envelope type is the fifth type, if the blood flow resistance state is a high blood flow resistance state or a very high blood flow resistance state, it is determined that the degree of arterial arteriosclerosis is very high.
It should be noted that the above-mentioned approximate arteriosclerosis index values and the corresponding inclusion types are summarized based on the existing physiological test data in the embodiments of the present application, and the data ranges are only referred to.
Embodiments of the apparatus of the present application are described below, which may be used to perform the method of analyzing arterial status in the above-described embodiments of the present application. For details which are not disclosed in the embodiments of the device of the present application, please refer to the embodiments of the method for analyzing the arterial status described above in the present application.
Fig. 7 shows a block diagram of an apparatus for analyzing arterial status according to an embodiment of the present application.
Referring to fig. 7, an apparatus 700 for analyzing arterial status according to an embodiment of the present application includes:
an obtaining unit 710, configured to obtain a pulse waveform of an artery to be analyzed and a pulse wave amplitude envelope of a sphygmomanometer; a waveform unit 720, configured to match the pulse waveform with a waveform of a normal pulse, and determine a blood flow resistance state corresponding to the pulse waveform; the envelope unit 730 is used for determining the envelope type of the pulse wave amplitude envelope of the sphygmomanometer based on the shape of the pulse wave amplitude envelope of the sphygmomanometer; a determining unit 740 for determining the state of the artery comprehensively according to the blood flow resistance state and the envelope type.
In some embodiments of the present application, based on the foregoing scheme, the waveform unit includes: identifying a first waveform corresponding to a main wave, a second waveform corresponding to a tidal wave and a third waveform corresponding to a repeating wave from the pulse waveforms; matching the first waveform, the second waveform and the third waveform with corresponding waveforms of a normal pulse waveform respectively to obtain a matching result of each waveform; and comprehensively determining the blood flow resistance state according to the matching result of each waveform.
In some embodiments of the present application, based on the foregoing scheme, the envelope unit 730 includes: the fitting unit is used for fitting the pulse wave amplitude envelope curve of the sphygmomanometer to obtain a fitting graph; the estimation unit is used for estimating an approximate arteriosclerosis index value corresponding to the fitting graph according to the shape of the fitting graph; and the type determining unit is used for determining the envelope type according to the parameter range in which the approximate arteriosclerosis index value is positioned.
In some embodiments of the present application, based on the foregoing scheme, the estimating unit includes: matching the fitting graph with a normal graph corresponding to an envelope curve of the normal blood pressure to obtain a matching degree; and estimating an approximate arteriosclerosis index value according to the matching degree.
In some embodiments of the present application, based on the foregoing scheme, the blood flow resistance state includes a low blood flow resistance state, a medium blood flow resistance state, a high blood flow resistance state, and a very high blood flow resistance state; wherein, in the low blood flow resistance state, the amplitude of the main wave is greater than a first amplitude threshold value, the width is less than a width threshold value, and the amplitude of the tidal wave is less than a second amplitude threshold value; the amplitude of the tidal wave in the state of the blood flow resistance is larger than a fourth amplitude threshold value, and the amplitude of the dicrotic wave in the state of the blood flow resistance is smaller than a fifth amplitude threshold value; in the high blood flow resistance state, the amplitude of the tidal wave is greater than a sixth amplitude threshold value, a fusion region exists between the main wave and the repeating wave, and the amplitude of the repeating wave is less than a seventh amplitude threshold value; in the extremely high blood flow resistance state, the main wave and the tidal wave are fused, the amplitude of the wave obtained by fusion is larger than an eighth amplitude threshold value, and the tidal wave and the dicrotic wave are fused;
in some embodiments of the present application, based on the foregoing scheme, the determining unit 740 includes: when the envelope type is a first type corresponding to normal blood pressure, if the blood flow resistance state is a low blood flow resistance state or a medium blood flow resistance state, the artery is judged to be in a normal state; when the envelope type is a first type, if the blood flow resistance state is a high blood flow resistance state, the artery is judged to be in the hardening degree; when the envelope type is the first type, if the blood flow resistance state is the blood flow resistance extremely high state, it is determined that the artery is in the high sclerosis degree state.
In some embodiments of the present application, based on the foregoing scheme, the determining unit 740 includes: when the envelope type is a second type corresponding to the critical blood pressure, if the blood flow resistance state is a low blood flow resistance state, the artery is judged to be in a normal state; when the envelope type is a second type, if the blood flow resistance state is a blood flow resistance middle state, determining that the degree of arterial arteriosclerosis is low; when the envelope type is a second type, if the blood flow resistance state is a high blood flow resistance state, the artery is judged to be in the hardening degree; when the envelope type is the second type, if the blood flow resistance state is the blood flow resistance extremely high state, it is determined that the degree of arterial arteriosclerosis is high.
In some embodiments of the present application, based on the foregoing scheme, the determining unit 740 includes: when the envelope type is a third type corresponding to arrhythmia and vascular sclerosis, if the blood flow resistance state is a low blood flow resistance state, determining that the arterial arteriosclerosis degree is low; when the envelope type is a third type, if the blood flow resistance state is a blood flow resistance middle state, the artery is judged to be in the hardening degree; when the envelope type is a third type, if the blood flow resistance state is a high blood flow resistance state, determining that the degree of arterial arteriosclerosis is high; when the envelope type is the third type, if the blood flow resistance state is the blood flow resistance extremely high state, it is determined that the degree of arterial arteriosclerosis is extremely high.
In some embodiments of the present application, based on the foregoing scheme, the determining unit 740 includes: when the envelope type is a fourth type corresponding to a high hardening degree, if the blood flow resistance state is a low blood flow resistance state or a medium blood flow resistance state, the artery is judged to be in the hardening degree; when the envelope type is the fourth type, if the blood flow resistance state is a high blood flow resistance state or a very high blood flow resistance state, it is determined that the degree of arterial arteriosclerosis is very high.
In some embodiments of the present application, based on the foregoing scheme, the determining unit 740 includes: when the envelope type is a fifth type corresponding to vascular sclerosis combined with cardiac function defect, if the blood flow resistance state is a low blood flow resistance state or a medium blood flow resistance state, determining that the degree of arterial arteriosclerosis is high; when the envelope type is the fifth type, if the blood flow resistance state is a high blood flow resistance state or a very high blood flow resistance state, it is determined that the degree of arterial arteriosclerosis is very high.
It should be noted that the computer readable medium shown in the embodiments of the present application may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an Erasable Programmable Read-Only Memory (EPROM), a flash Memory, an optical fiber, a portable Compact Disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present application, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In this application, however, a computer readable signal medium may include a propagated data signal with a computer program embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. The computer program embodied on the computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the foregoing.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. Each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units described in the embodiments of the present application may be implemented by software, or may be implemented by hardware, and the described units may also be disposed in a processor. Wherein the names of the elements do not in some way constitute a limitation on the elements themselves.
As another aspect, the present application also provides a computer-readable medium, which may be contained in the electronic device described in the above embodiments; or may exist separately without being assembled into the electronic device. The computer readable medium carries one or more programs which, when executed by an electronic device, cause the electronic device to implement the method described in the above embodiments.
It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the application. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of the present application.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A method for analyzing an arterial status, comprising:
acquiring a pulse waveform of an artery to be analyzed and a pulse wave amplitude envelope line of a sphygmomanometer;
matching the pulse waveform with a waveform of a normal pulse to determine a blood flow resistance state corresponding to the pulse waveform;
determining the envelope type of the pulse wave amplitude envelope of the sphygmomanometer based on the shape of the pulse wave amplitude envelope of the sphygmomanometer;
and comprehensively determining the state of the artery according to the blood flow resistance state and the envelope type.
2. The method of claim 1, wherein matching the pulse waveform to a waveform of a normal pulse to determine a blood flow resistance state corresponding to the pulse waveform comprises:
identifying a first waveform corresponding to a main wave, a second waveform corresponding to a tidal wave and a third waveform corresponding to a repeating wave from the pulse waveforms;
matching the first waveform, the second waveform and the third waveform with corresponding waveforms of normal pulse waveforms respectively to obtain matching results of the waveforms;
and comprehensively determining the blood flow resistance state according to the matching result of each waveform.
3. The method of claim 1, wherein determining the envelope type of the sphygmomanometer pulse wave amplitude envelope based on the shape of the sphygmomanometer pulse wave amplitude envelope comprises:
fitting the pulse wave amplitude envelope of the sphygmomanometer to obtain a fitted graph;
estimating an approximate arteriosclerosis index value corresponding to the fitted graph according to the shape of the fitted graph;
and determining the envelope type according to the parameter range of the approximate arteriosclerosis index value.
4. The method of claim 3, wherein estimating an approximate arteriosclerosis index value corresponding to the fitting graph according to the shape of the fitting graph comprises:
matching the fitting graph with a normal graph corresponding to an envelope curve of normal blood pressure to obtain a matching degree;
and estimating the approximate arteriosclerosis index value according to the matching degree.
5. The method of claim 1,
the blood flow resistance state comprises a low blood flow resistance state, a medium blood flow resistance state, a high blood flow resistance state and a high blood flow resistance state; wherein, in the low blood flow resistance state, the amplitude of the main wave is greater than a first amplitude threshold value, the width is less than a width threshold value, and the amplitude of the tidal wave is less than a second amplitude threshold value; the amplitude of the tidal wave is greater than a fourth amplitude threshold and the amplitude of the dicrotic wave is less than a fifth amplitude threshold in the state of the blood flow resistance; in the high blood flow resistance state, the amplitude of the tidal wave is greater than a sixth amplitude threshold, a fusion region exists between the main wave and the repeating wave, and the amplitude of the repeating wave is less than a seventh amplitude threshold; in the blood flow resistance extremely high state, the main wave and the tidal wave are fused, the amplitude of the wave obtained by fusion is larger than an eighth amplitude threshold value, and the tidal wave and the dicrotic wave are fused;
comprehensively determining the state of the artery according to the blood flow resistance state and the envelope type, comprising:
when the envelope type is a first type corresponding to normal blood pressure, if the blood flow resistance state is a low blood flow resistance state or a medium blood flow resistance state, determining that the artery is in a normal state;
when the envelope type is the first type, if the blood flow resistance state is a high blood flow resistance state, determining that the state is in the arteriosclerosis degree;
and when the envelope type is the first type, if the blood flow resistance state is a blood flow resistance extremely high state, determining that the degree of arteriosclerosis is high.
6. The method of claim 5, wherein determining the state of the artery from the state of blood flow resistance and the envelope type comprises:
when the envelope type is a second type corresponding to the critical blood pressure, if the blood flow resistance state is the low blood flow resistance state, determining that the artery is in a normal state;
when the envelope type is the second type, if the blood flow resistance state is the medium blood flow resistance state, determining that the degree of arteriosclerosis is low;
when the envelope type is the second type, if the blood flow resistance state is the high blood flow resistance state, determining that the state is in the arteriosclerosis degree;
and when the envelope type is the second type, if the blood flow resistance state is the blood flow resistance extremely high state, determining that the degree of arteriosclerosis is high.
7. The method of claim 5, wherein determining the state of the artery from the state of blood flow resistance and the envelope type comprises:
when the envelope type is a third type corresponding to arrhythmia combined with arteriosclerosis, if the blood flow resistance state is the low blood flow resistance state, determining that the arteriosclerosis degree is low;
when the envelope type is the third type, if the blood flow resistance state is the blood flow resistance medium state, determining that the state is in the arteriosclerosis degree; ' Qiyi
When the envelope type is the third type, if the blood flow resistance state is the high blood flow resistance state, determining that the degree of arteriosclerosis is high;
and when the envelope type is the third type, if the blood flow resistance state is the blood flow resistance extremely high state, determining that the degree of arteriosclerosis is extremely high.
8. The method of claim 5, wherein determining the state of the artery from the state of blood flow resistance and the envelope type comprises:
when the envelope type is a fourth type corresponding to a high hardening degree, if the blood flow resistance state is the low blood flow resistance state or the medium blood flow resistance state, determining that the state is in the arteriosclerosis degree;
and when the envelope type is the fourth type, if the blood flow resistance state is the high blood flow resistance state or the extremely high blood flow resistance state, determining that the degree of arteriosclerosis is extremely high.
9. The method of claim 5, wherein determining the state of the artery from the state of blood flow resistance and the envelope type comprises:
when the envelope type is a fifth type corresponding to vascular sclerosis combined with cardiac function impairment, if the blood flow resistance state is the low blood flow resistance state or the medium blood flow resistance state, determining that the degree of arteriosclerosis is high;
and when the envelope type is the fifth type, if the blood flow resistance state is the high blood flow resistance state or the extremely high blood flow resistance state, determining that the degree of arteriosclerosis is extremely high.
10. An apparatus for analyzing an arterial condition, comprising:
the acquisition unit is used for acquiring the pulse waveform of an artery to be analyzed and the pulse wave amplitude envelope line of the sphygmomanometer;
the waveform unit is used for matching the pulse waveform with the waveform of normal pulse and determining the blood flow resistance state corresponding to the pulse waveform;
the envelope unit is used for determining the envelope type of the pulse wave amplitude envelope of the sphygmomanometer based on the shape of the pulse wave amplitude envelope of the sphygmomanometer;
a determination unit for determining the state of the artery comprehensively according to the blood flow resistance state and the envelope type.
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