CN102048534A - Monitoring method and monitoring device capable of playing back fetal heart Doppler audio signals - Google Patents
Monitoring method and monitoring device capable of playing back fetal heart Doppler audio signals Download PDFInfo
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Abstract
The invention relates to the technical field of medical monitoring, in particular to a monitoring method and monitoring device capable of playing back fetal heart Doppler audio signals. The monitoring method comprises the following steps: collecting fetal heart monitoring signals, saving the fetal heart Doppler signals, and comparing with the judgment standard; if the comparison result is abnormal, adding an abnormity mark, and when a user needs to play back the fetal heart monitoring signals, playing back the fetal heart monitoring signals; judging the abnormal states of the fetal heart monitoring signals by a user according to the fetal heart monitoring signals which are played back, and re-defining the mark according to the judgment result by the user. By utilizing the technical scheme provided by the invention, when the complex beating situation of the fetal heart of a fetus occurs, a doctor can hear the fetal heart sound at that time during the follow-up time period by playing back an audio through an audio recording module even the doctor is not beside a fetus monitor, so that the miscalculation of heart rate or real mutation of the fetal heart can be judged according to the beat of the audio, the mistaken judgment situations of fetal heart beating can be greatly reduced, and the doctor can perform diagnosis conveniently.
Description
Technical field
The present invention relates to medical monitoring technology field, but be specifically related to a kind of monitoring method and device of playback fetal rhythm doppler audio signal.
Background technology
The ultrasonic doppler fetal monitor that is widely used in clinical obstetrics has now utilized one characteristic---doppler principle of sound, and referring to that sound runs into the echo of moving object reflection can the occurrence frequency skew, and the speed of side-play amount and moving object is proportional.The ultrasonic probe of fetal monitor is placed on anemia of pregnant woman's abdominal part, towards fetal rhythm emission ultrasound wave, and reception echo, corresponding heart wall, valve speed are within the specific limits because heart of fetus is beated, monitor can be recognized the echo of being reflected by fetal rhythm through amplification, filtering, fetal monitor also utilizes this echo cycle, calculates fetal rhythm rate (FHR).
A series of motions that a heart beating is produced when movable by heart wall and valve are formed, and monitor might receive all these locomotor echoes.The form of fetal heart beats in particular cases can cause the fetal heart frequency miscalculation of monitor at some, such as being elevated to 180bpm when the fetal rhythm rate or when higher, it is very intensive that heart movement becomes gradually, so that ultrasonic monitor might be construed to the heart movement of twice independent heart beating a heart beating, the monitoring fetal rhythm rate of coming out is exactly half of actual fetal rhythm rate like this, the significantly landing suddenly of baseline fetal heart rate is close to half of former numerical value when showing as tachycardia; And when the fetal rhythm rate is reduced to the 90bpm left and right sides, heart contraction and diastole become very long at interval gradually, so that ultrasonic monitor might be construed to twice independent heart beating with contraction and twice heart movement of diastole of a heart beating, guarding the fetal rhythm rate of coming out like this is exactly the twice of actual fetal rhythm rate, be called doublely, show as the unexpected variation of fetal heart frequency baseline, acutely slow down or the big jump of heart rate during the bradycardia.These are called as the principle defective of ultrasonic doppler fetal monitor in obstetrics' fetal heart monitoring industry.
But in clinical, particularly in the birth process, it is second stage of labor, the situation that fetal rhythm significantly changes suddenly is more common, in uterus anoxia, fetal rhythm are poverty-stricken such as fetus, heart rate may moment be reduced to original approximately half, this with the principle defective of ultrasonic doppler fetal monitor in fetal rhythm calculating to miscalculate that (reducing by half) show on the heart rate curve be the same.
China Patent No. is CN200710027843.0, " a kind of monitor of stages of labor device and monitor of stages of labor method thereof " by name, in put down in writing a kind of method and apparatus of monitor of stages of labor, but this technical scheme is when second stage of labor, the doctor needs the rhythm according to the fetal rhythm doppler audio that is played out by the fetal monitor loudspeaker, and differentiation is miscalculation or real fetal rhythm reduces by half.If this moment doctor, nurse are busy just not on the fetal monitor next door, do not hear the fetal rhythm doppler audio, then only be difficult to judge to be the miscalculation that genuine fetal rhythm rate big retarding or principle defective cause, bring doubt for doctor's diagnosis according to the fetal heart frequency curve chart.
Summary of the invention
For overcoming above-mentioned defective, but purpose of the present invention promptly is a kind of monitoring method and device of playback fetal rhythm doppler audio signal.
The objective of the invention is to be achieved through the following technical solutions:
But the monitor device of a kind of playback fetal rhythm of the present invention doppler audio signal mainly comprises:
Signal acquisition module is used in scheduled duration the fetal rhythm audio signal being gathered;
Signal resolution module is connected with signal acquisition module, and the fetal rhythm audio signal that is used for that signal acquisition module is collected is resolved and obtained the heart rate numeric data;
The signal storage module is connected with signal resolution module with signal acquisition module, and the fetal rhythm audio signal and the heart rate numeric data that are used for collecting are stored as the fetal heart monitoring signal;
The duration judge module is used for judging whether the monitoring duration reaches scheduled duration, if the monitoring duration arrives scheduled duration, then sends timeout signal to main control module;
The signal comparison module is connected with main control module, is used for sending timeout signal according to main control module, calls fetal heart monitoring signal of having preserved and the criterion of presetting and compares, and comparative result is sent to main control module;
The abnormal marking module is connected with main control module, is used for adding abnormal marking in the exception starting point, and depositing the signal storage module in by main control module when comparative result when being unusual;
The signal playback module, be connected with main control module, the user is used for when need carry out playback to the fetal heart monitoring signal with abnormal marking, main control module also sends to the signal playback module with this fetal heart monitoring signal according to the fetal heart monitoring signal of the selected needs playback of labelling, and the signal playback module is carried out playback to voice data in the fetal heart monitoring signal and heart rate numeric data;
Labelling redefines module, is connected with main control module, is used for after the user judges according to the fetal heart monitoring signal of playback, according to user's input judged result the labelling of the abnormality of fetal heart monitoring signal is carried out again definition and write signal memory module;
Data derive module, are connected with main control module, are used for when the data that receive main control module derive signal the labelling that heart rate numeric data in the derivation fetal heart monitoring signal and fetal heart monitoring signal redefine;
Display module is connected with main control module, is used for when receiving the shows signal of main control module, shows the labelling that heart rate numeric data and fetal heart monitoring signal redefine;
Main control module, redefining module, data with signal storage module, duration judge module, signal comparison module, abnormal marking module, signal playback module, labelling derives module and is connected with display module, is used for the work that control signal memory module, duration judge module, signal comparison module, abnormal marking module, signal playback module, labelling redefine module, data derivation module and display module.
But a kind of monitoring method of playback fetal rhythm doppler audio signal comprises:
In scheduled duration, the fetal rhythm audio signal is gathered, described fetal rhythm audio signal is resolved obtain the heart rate numeric data;
The fetal rhythm audio signal and the heart rate numeric data that collect are stored as the fetal heart monitoring signal;
Judge whether guard duration reaches scheduled duration, fetal heart monitoring signal and the criterion of presetting are compared as if guarding duration arrival scheduled duration, then entering;
Call fetal heart monitoring signal of having preserved and the criterion of presetting and compare,, then add abnormal marking, and continue in scheduled duration, the fetal heart monitoring signal to be gathered in the exception starting point if comparative result is unusual;
When the user need carry out playback to the fetal heart monitoring signal with abnormal marking, the fetal heart monitoring signal according to the selected needs playback of labelling carried out playback to voice data in the fetal heart monitoring signal and heart rate numeric data;
After the user judges according to the fetal heart monitoring signal of playback, the labelling of the abnormality of fetal heart monitoring signal is carried out again definition according to user's input judged result;
The labelling that heart rate numeric data in the derivation fetal heart monitoring signal and fetal heart monitoring signal redefine.
Even technical scheme provided by the present invention makes the doctor not when the fetal monitor next door, the complicated situation of beating takes place in the fetal rhythm of fetus, the doctor also can be in the follow-up time hears at that time fetal heart sound by audio recording module plays back audio, the present invention can write down and playback some special middle monitoring data that produce in the monitoring process, the beat judgement that makes the doctor can utilize this centre to guard the audio frequency in data is the heart rate miscalculation or really carries out the fetal rhythm sudden change and judge, so great minimizing takes place the situation of fetal heart beats false judgment, and the information of being convenient to the intermediate object program that the doctor obtains according to this method can be made diagnosis more accurately.
Description of drawings
In order to be easy to explanation, the present invention is done to describe in detail by following preferred embodiment and accompanying drawing.
But Fig. 1 is the sketch map of an embodiment of monitor device of a kind of playback fetal rhythm of the present invention doppler audio signal;
But Fig. 2 is the sketch map of another embodiment of monitor device of a kind of playback fetal rhythm of the present invention doppler audio signal;
But Fig. 3 is the sketch map of an embodiment of monitoring method of a kind of playback fetal rhythm of the present invention doppler audio signal;
But Fig. 4 is the sketch map of another embodiment of monitoring method of a kind of playback fetal rhythm of the present invention doppler audio signal.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
See also Fig. 1, but the monitor device of a kind of playback fetal rhythm of the present invention doppler audio signal comprises mainly:
Labelling redefines module 110, be connected with main control module 104, be used for after the user judges according to the fetal heart monitoring signal of playback, according to user's input judged result the labelling of the abnormality of fetal heart monitoring signal is carried out again definition and write signal memory module 103, after playback finishes, redefine module 110 by main control module 104 control marks and again the state of fetal heart monitoring signal is carried out again definition, normal or unusual, the generally labeling content is " a heart rate real change " or " heart rate miscalculation ";
Understand the present invention for more detailed, but with another embodiment the monitor device of a kind of playback fetal rhythm of the present invention doppler audio signal be described below,, be specially please referring to Fig. 2:
But the monitor device of described playback fetal rhythm doppler audio signal also comprises:
Voice data removing module 107 is connected with signal storage module 103 with main control module 104, is used for working as comparative result for just often, according to the voice data in the fetal heart monitoring signal in the instruction erasure signal memory module 103 of main control module;
Certainly, this voice data removing module 107 can also be, be used for voice data is carried out the voice data dump block (not shown) of zero clearing, or, the voice data that is used for voice data is derived is derived module (not shown), or, manually delete the manual removing module (not shown) of voice data according to user's operation;
Duration setting module 113 is connected with duration judge module 105, is used for scheduled duration is set;
Criterion setting module 114 is connected with signal comparison module 106, is used for criterion is set.
Wherein, described signal playback module also comprises: audio playback module and heart rate numeric data playback module.
See also Fig. 3, but the monitoring method of a kind of playback fetal rhythm of the present invention doppler audio signal, and this method is a kind ofly to obtain method as the information of intermediate object program from fetus, mainly comprises:
301. gather and resolve audio signal
The user opens fetal monitor, find fetal heart rate signal with ultrasonic probe, fetal monitor can be heard clear tangible fetal heart sound, in scheduled duration, the fetal rhythm audio signal is gathered, described fetal rhythm audio signal resolved obtain the heart rate numeric data and described heart rate numeric data is shown, in gatherer process, sample rate is not less than 2000hz, and data bits is no less than 8;
302. storage fetal heart monitoring signal
The fetal rhythm audio signal and the heart rate numeric data that collect are stored as the fetal heart monitoring signal;
303. judge whether to reach scheduled duration
Judge whether guard duration reaches scheduled duration, fetal heart monitoring signal and the criterion of presetting are compared as if guarding duration arrival scheduled duration, then entering;
304. judge whether comparative result is normal
Call fetal heart monitoring signal of having preserved and the criterion of presetting and compare,, then add abnormal marking in the exception starting point if comparative result is unusual;
305. adding abnormal marking
When comparative result when being unusual, add abnormal marking in the exception starting point, and continue in scheduled duration, the fetal heart monitoring signal to be gathered;
306. when the needs playback, carry out playback
When the user need carry out playback to the fetal heart monitoring signal with abnormal marking, fetal heart monitoring signal according to the selected needs playback of labelling, voice data in the fetal heart monitoring signal and heart rate numeric data are carried out playback, the user can access the historical record of real-time heart rate data from memorizer, select the unusual cue mark of interested audio signal, monitor response and playing audio-fequency data, and show data trend that the heart rate of this section audio correspondence calculates figure as a result synchronously in the fetal rhythm numerical value viewing area of screen;
307. redefine the labelling of abnormality
After the user judges according to the fetal heart monitoring signal of playback, the labelling of the abnormality of fetal heart monitoring signal is carried out again definition according to user's input judged result;
308. derive heart rate numeric data and labelling
The labelling that heart rate numeric data in the derivation fetal heart monitoring signal and fetal heart monitoring signal redefine.
Understand the present invention for more detailed, but with another embodiment the monitoring method of a kind of playback fetal rhythm of the present invention doppler audio signal be described below,, be specially please referring to Fig. 4:
401. setting scheduled duration
Scheduled duration is set, and general duration is set be no less than 20 minutes;
402. set the preset judgment standard
The preset judgment standard is set, this preset judgment standard is that international fetal rhythm standards of grading comprise: the standards of grading of KREBS standards of grading, Fisher standards of grading, improvement Fisher standards of grading, NST, determine every index, comprise the long variation of scope, fetal rhythm of baseline fetal heart rate and scope, the acceleration of fetal rhythm rate and the quantity of slowing down and the scope of persistent period and amplitude of short variation value;
403. gather and resolve audio signal
The user opens fetal monitor, find fetal heart rate signal with ultrasonic probe, fetal monitor can be heard clear tangible fetal heart sound, in scheduled duration, the fetal rhythm audio signal is gathered, described fetal rhythm audio signal resolved obtain the heart rate numeric data and described heart rate numeric data is shown, in gatherer process, sample rate is not less than 2000hz, and data bits is no less than 8;
404. storage fetal heart monitoring signal
The fetal rhythm audio signal and the heart rate numeric data that collect are stored as the fetal heart monitoring signal;
405. judge whether to reach scheduled duration
Judge whether guard duration reaches scheduled duration, fetal heart monitoring signal and the criterion of presetting are compared as if guarding duration arrival scheduled duration, then entering;
406. judge whether comparative result is normal
Calling the fetal heart monitoring signal of having preserved compares with default heart rate baseline value, long variation value, short variation value, fetal rhythm rate acceleration figure, fetal rhythm rate deceleration value respectively;
Judge that the heart rate baseline value is whether within critical field, if the heart rate baseline value not within critical field, then is defined as comparative result for unusual;
Judge long variation value, short variation value whether within critical field, if long variation value, short variation value not within critical field, then are defined as comparative result for unusual;
Judge fetal rhythm rate acceleration figure, fetal rhythm rate deceleration value whether within critical field, if fetal rhythm rate acceleration figure, fetal rhythm rate deceleration value not within critical field, then are defined as comparative result for unusual;
If fetal rhythm rate acceleration figure, fetal rhythm rate deceleration value, long variation value, short variation value, heart rate baseline value all within critical field, then are defined as comparative result for normal;
If comparative result is normal, then delete the voice data in the fetal heart monitoring signal; If comparative result is unusual, then add abnormal marking in the exception starting point;
407. deletion voice data
When comparative result for just often, voice data in the deletion fetal heart monitoring signal, and continue in scheduled duration, the fetal heart monitoring signal to be gathered, system can according to comparative result to voice data delete automatically, derivation, zero clearing or remind the user manually to delete;
408. adding abnormal marking
When comparative result when being unusual, add abnormal marking in the exception starting point, and continue in scheduled duration, the fetal heart monitoring signal to be gathered;
409. when the needs playback, carry out playback
When the user need carry out playback to the fetal heart monitoring signal with abnormal marking, the fetal heart monitoring signal according to the selected needs playback of labelling carried out playback to voice data in the fetal heart monitoring signal and heart rate numeric data; The user can access the historical record of real-time heart rate data from memorizer, select the unusual cue mark of interested audio signal, monitor response and playing audio-fequency data, and show data trend that the heart rate of this section audio correspondence calculates figure as a result synchronously in the fetal rhythm numerical value viewing area of screen;
410. abnormality is judged prompting
Point out the user that the abnormality of fetal heart monitoring signal is judged in the mode that ejects normal or unusual selection dialog box; The user can judge the abnormality of monitored signal according to the audio signal of playback, and after judgement according to prompting, the input judged result is: " normally " or " unusually ";
411. redefine the labelling of abnormality
After the user judges according to the fetal heart monitoring signal of playback, according to user's input judged result the labelling of the abnormality of fetal heart monitoring signal is carried out again definition, if the user selects normally, in exception labelling " affirmation changes in heart rate ", if the user selects unusually, in the preferred labelling of exception " heart rate miscalculation ";
412. derive heart rate numeric data and labelling
The labelling that heart rate numeric data in the derivation fetal heart monitoring signal and fetal heart monitoring signal redefine; To print or the electric transmission mode derives the labelling that heart rate numeric data in the fetal heart monitoring signal and fetal heart monitoring signal redefine.
Wherein, described criterion comprises: heart rate baseline value, long variation value, short variation value, fetal rhythm rate acceleration figure, fetal rhythm rate deceleration value.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. but the monitor device of a playback fetal rhythm doppler audio signal is characterized in that, comprising:
Signal acquisition module is used in scheduled duration the fetal rhythm audio signal being gathered;
Signal resolution module is connected with signal acquisition module, and the fetal rhythm audio signal that is used for that signal acquisition module is collected is resolved and obtained the heart rate numeric data;
The signal storage module is connected with signal resolution module with signal acquisition module, and the fetal rhythm audio signal and the heart rate numeric data that are used for collecting are stored as the fetal heart monitoring signal;
Main control module,
The duration judge module is used for judging whether the monitoring duration reaches scheduled duration, if the monitoring duration arrives scheduled duration, then sends timeout signal to main control module;
The signal comparison module is connected with main control module, is used for sending timeout signal according to main control module, calls fetal heart monitoring signal of having preserved and the criterion of presetting and compares, and comparative result is sent to main control module;
The abnormal marking module is connected with main control module, is used for adding abnormal marking in the exception starting point, and depositing the signal storage module in by main control module when comparative result when being unusual;
The signal playback module, be connected with main control module, the user is used for when need carry out playback to the fetal heart monitoring signal with abnormal marking, main control module also sends to the signal playback module with this fetal heart monitoring signal according to the fetal heart monitoring signal of the selected needs playback of labelling, and the signal playback module is carried out playback to voice data in the fetal heart monitoring signal and heart rate numeric data;
Labelling redefines module, is connected with main control module, is used for after the user judges according to the fetal heart monitoring signal of playback, according to user's input judged result the labelling of the abnormality of fetal heart monitoring signal is carried out again definition and write signal memory module;
Data derive module, are connected with main control module, are used for when the data that receive main control module derive signal the labelling that heart rate numeric data in the derivation fetal heart monitoring signal and fetal heart monitoring signal redefine;
Display module is connected with main control module, is used for when receiving the shows signal of main control module, shows the labelling that heart rate numeric data and fetal heart monitoring signal redefine;
Described main control module and signal storage module, duration judge module, signal comparison module, abnormal marking module, signal playback module, labelling redefine module, data derive module and are connected with display module, are used for the work that control signal memory module, duration judge module, signal comparison module, abnormal marking module, signal playback module, labelling redefine module, data derivation module and display module.
2. but the monitor device of playback fetal rhythm doppler audio signal according to claim 1 is characterized in that, but the monitor device of described playback fetal rhythm doppler audio signal also comprises:
The voice data removing module is connected with the signal storage module with main control module, is used for working as comparative result for just often, according to the voice data in the fetal heart monitoring signal in the instruction erasure signal memory module of main control module;
The duration setting module is connected with the duration judge module, is used for scheduled duration is set;
The criterion setting module is connected with the signal comparison module, is used for criterion is set.
3. but the monitor device of playback fetal rhythm doppler audio signal according to claim 2 is characterized in that, described signal playback module also comprises: audio playback module and heart rate numeric data playback module.
4. but the monitoring method of a playback fetal rhythm doppler audio signal is characterized in that, comprising:
In scheduled duration, the fetal rhythm audio signal is gathered, described fetal rhythm audio signal is resolved obtain the heart rate numeric data;
The fetal rhythm audio signal and the heart rate numeric data that collect are stored as the fetal heart monitoring signal;
Judge whether guard duration reaches scheduled duration, fetal heart monitoring signal and the criterion of presetting are compared as if guarding duration arrival scheduled duration, then entering;
Call fetal heart monitoring signal of having preserved and the criterion of presetting and compare,
If comparative result is normal, then continue in scheduled duration, the fetal heart monitoring signal to be gathered,
If comparative result is unusual, then adds abnormal marking, and continue in scheduled duration, the fetal heart monitoring signal to be gathered in the exception starting point;
When the user need carry out playback to the fetal heart monitoring signal with abnormal marking, the fetal heart monitoring signal according to the selected needs playback of labelling carried out playback to voice data in the fetal heart monitoring signal and heart rate numeric data;
After the user judges according to the fetal heart monitoring signal of playback, the labelling of the abnormality of fetal heart monitoring signal is carried out again definition according to user's input judged result;
The labelling that heart rate numeric data in the derivation fetal heart monitoring signal and fetal heart monitoring signal redefine.
5. but the monitoring method of playback fetal rhythm doppler audio signal according to claim 4 is characterized in that, comprises before in scheduled duration the fetal heart monitoring signal being gathered described:
Scheduled duration is set.
6. but the monitoring method of playback fetal rhythm doppler audio signal according to claim 4 is characterized in that, comprises before in scheduled duration the fetal heart monitoring signal being gathered described:
The preset judgment standard is set.
7. but according to the monitoring method of claim 5 or 6 described playback fetal rhythm doppler audio signals, it is characterized in that the described fetal heart monitoring signal preserved of calling compares also with default criterion and comprises:
Described criterion comprises: heart rate baseline value, long variation value, short variation value, fetal rhythm rate acceleration figure, fetal rhythm rate deceleration value;
Judge that the heart rate baseline value is whether within critical field, if the heart rate baseline value not within critical field, then is defined as comparative result for unusual;
Judge long variation value, short variation value whether within critical field, if long variation value, short variation value not within critical field, then are defined as comparative result for unusual;
Judge that fetal rhythm rate acceleration figure, fetal rhythm rate deceleration value are whether within critical field; If fetal rhythm rate acceleration figure, fetal rhythm rate deceleration value not within critical field, then are defined as comparative result for unusual;
If fetal rhythm rate acceleration figure, fetal rhythm rate deceleration value, long variation value, short variation value, heart rate baseline value all within critical field, then are defined as comparative result for normal.
8. but according to the monitoring method of the described playback fetal rhythm of claim 4 doppler audio signal, it is characterized in that the described comparative result that is defined as comprises after normal:
Voice data in the deletion fetal heart monitoring signal, and continue in scheduled duration, the fetal heart monitoring signal to be gathered.
9. but according to the monitoring method of the described playback fetal rhythm of claim 7 doppler audio signal, it is characterized in that, before the user judges according to the fetal heart monitoring signal of playback, comprise described:
The prompting user judges the abnormality of fetal heart monitoring signal.
10. but according to the monitoring method of the described playback fetal rhythm of claim 9 doppler audio signal, it is characterized in that the labelling that heart rate numeric data in the described derivation fetal heart monitoring signal and fetal heart monitoring signal redefine comprises: to print or the electric transmission mode derives the labelling that heart rate numeric data in the fetal heart monitoring signal and fetal heart monitoring signal redefine.
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