WO2017047595A1

WO2017047595A1 - Breathing state display device, breathing state display method, and breathing state display program

Info

Publication number: WO2017047595A1
Application number: PCT/JP2016/077007
Authority: WO
Inventors: 文彦鷹取; 諭東郷; 伸二山森
Original assignee: 日本光電工業株式会社
Priority date: 2015-09-16
Filing date: 2016-09-13
Publication date: 2017-03-23
Also published as: JP2017055965A

Abstract

One purpose of the present invention is to provide a breathing state display device, a breathing state display method, and a breathing state display program that enable a user to ascertain whether appropriate ventilation, which conforms to the size of the subject's body, is being carried out. An input unit (101) acquires a body indicator indicating the size of the subject's body, and acquires a first measurement value which is the measurement value of a first breathing parameter of the subject; An indicator calculation unit (105) calculates, on the basis of the body indicator, a first indicator indicating a normal value and/or an abnormal value of the first breathing parameter. A display control unit (106) generates a display screen which displays the first indicator and the first measurement value.

Description

Respiratory state display device, respiratory state display method, and respiratory state display program

The present invention relates to a respiratory condition display device, a respiratory condition display method, and a respiratory condition display program.

アン Ambu bags and Jackson leasebacks are widely used during hypoventilation and respiratory arrest. When using an Ambu bag or a Jackson wreath bag, cover the subject's mouth to nasal cavity with a mask, and push the Ambu bag (or Jackson wreath bag) connected to the mask to supply air.

In the case of supplying air using an Ambu bag or Jackson lease bag, a mask fixing method called EC method is used in order to perform appropriate ventilation. In addition, the rescuer visually confirms that there is no air leakage by the movement of the rib cage (and thus the expansion of the lungs). Alternatively, the rescuer makes an auditory confirmation that air is being delivered properly.

The above-mentioned visual and auditory ventilation check is effective for adults with large tidal volume. However, confirmation for infants and infants with small tidal volume (hereinafter simply referred to as infants) is difficult. Therefore, it is effective to determine whether ventilation for an infant is properly performed by measuring and displaying respiratory-related parameters such as exhaled carbon dioxide (CO2) concentration and tidal volume. Non-Patent Document 1 suggests that it is useful to refer to the exhaled carbon dioxide concentration when performing intubation and ventilation.

Patent Document 1 is an example of a technique for measuring exhaled carbon dioxide concentration. Patent Document 1 discloses a device that can be disposable and can easily measure the expiratory carbon dioxide concentration. Moreover, it is suggested that the said apparatus is used with an ambu bag (patent document 1 FIG. 7 etc.).

Japanese Unexamined Patent Publication No. 6-249850

As described above, it is effective to measure respiratory-related parameters such as exhaled carbon dioxide concentration and tidal volume to determine whether or not the subject (mainly infants) is properly ventilated. . However, the range of normal values for breathing-related parameters depends on the size of the subject's body. Therefore, there is a problem that it is difficult to grasp whether ventilation suitable for the size of the body is performed. The problem is not limited to ventilation using a bag (an Ambu bag or Jackson lease bag), but is common to ventilation using any other method. Of course, the above-mentioned problem is not limited to the case where the subject is an infant, but is common to adults (for example, the range of appropriate normal values differs between small adult women and large adult men). .)

Therefore, the present invention has been made in view of the above-described problems, and a respiratory state display device and a respiratory state display method capable of grasping whether or not the subject is in an appropriate respiratory state that matches the body size of the subject. The main purpose is to provide a respiratory status display program

One aspect of the respiratory condition display device according to the present embodiment is
An input unit that acquires a body index indicating the size of the body of the subject, and acquires a first measurement value that is a measurement value of the first respiratory parameter of the subject;
An index calculating unit that calculates a first index indicating at least one of normal and abnormal first respiratory parameters based on the body index;
A display control unit that generates a display screen for displaying the first index and the first measurement value.

The index calculation unit calculates an index (first index) of the first respiratory parameter of the subject based on the body index (weight, age, sex, etc.). The first index indicates at least one of normal (normal value or normal value range) and abnormal (abnormal value or abnormal value range) of the first respiratory parameter. And a display control part produces | generates the display screen which displayed together the measured value (1st measured value) of the test subject's 1st breathing parameter, and the parameter | index (1st parameter | index). By referring to this display screen, the user can refer to the index and the measured value in consideration of the size of the subject's body. Thereby, the user can grasp | ascertain whether a test subject's breathing state is a state corresponding to the test subject's body size.

The present invention provides a breathing state display device, a breathing state display method, and a breathing state display program capable of grasping whether or not the breathing state matches the size of the subject's body.

1 is a conceptual diagram showing a configuration of a respiratory management system 1 according to a first embodiment. It is a block diagram which shows the structure of the respiratory condition display apparatus 10 concerning Embodiment 1. FIG. FIG. 6 is a conceptual diagram showing an operation of the index calculation unit 105 according to the first embodiment. FIG. 3 is a diagram illustrating an example of a display screen generated by the display control unit according to the first embodiment. FIG. 3 is a diagram illustrating an example of a display screen generated by the display control unit according to the first embodiment. FIG. 3 is a diagram illustrating an example of a display screen generated by the display control unit according to the first embodiment. FIG. 3 is a diagram illustrating an example of a display screen generated by the display control unit according to the first embodiment. FIG. 3 is a diagram illustrating an example of a display screen generated by the display control unit according to the first embodiment. FIG. 3 is a diagram illustrating an example of a display screen generated by the display control unit according to the first embodiment. FIG. 3 is a diagram illustrating an example of a display screen generated by the display control unit according to the first embodiment. FIG. 3 is a diagram illustrating an example of a display screen generated by the display control unit according to the first embodiment. It is a block diagram which shows the structure of the respiratory condition display apparatus 10 concerning Embodiment 2. FIG. FIG. 10 is a diagram showing an example of a display screen generated by the display control unit 106 according to the second embodiment. FIG. 10 is a diagram showing an example of a display screen generated by the display control unit 106 according to the second embodiment.

<Embodiment 1>
Embodiments of the present invention will be described below with reference to the drawings. First, the configuration of the respiratory management system 1 according to the present embodiment will be described. FIG. 1 is a conceptual diagram showing a configuration of a respiratory management system 1 according to the present embodiment.

The respiratory management system 1 includes a respiratory state display device 10 and a respiratory sensor 20. In this example, the respiration sensor 20 is connected to the mask 30 and the ambu bag 40, but this configuration is merely an example. The respiration sensor 20 only needs to measure various respiration parameters during the ventilation of the subject P. For example, the respiration sensor 20 may be connected to a Jackson lease bag.

The mask 30 covers the oral cavity and nasal cavity of the subject P. The unview bag 40 is a medical device that ventilates the subject P by a rescuer pressing and opening the bag. The subject P is a subject who is ventilated by the unview bag 40. The subject P may be an infant, an infant, an adolescent, an adult, or an elderly person. That is, the body size of the subject P (and thus the size of each organ including the lungs) varies. In addition, the subject P is not limited to a human being such as a disabled person, and may be a mannequin that simulates a human being.

The respiration sensor 20 is disposed between the mask 30 and the unview bag 40, and obtains measured values of various respiration parameters of the subject P during ventilation. The breathing parameter is a parameter that can be calculated from at least one of exhalation and inspiration of the subject P, and indicates the breathing state of the subject P. Examples of the respiratory parameters include tidal volume, maximum airway pressure, respiratory rate, end-tidal carbon dioxide concentration (EtCO2), positive end-expiratory pressure, and the like. That is, the respiration sensor 20 has a part or all of the configuration of a general flow sensor (a sensor for measuring a tidal volume) or a respiration gas sensor (a sensor for measuring a carbon dioxide concentration, a respiration rate, an inspiratory pressure, etc.). Anything is fine. The respiration sensor 20 may be configured to be connected to a gas concentration meter or the like (not shown). Although the respiration parameter measured by the respiration sensor 20 may be singular (first respiration parameter), it is preferable to have a plurality of respiration parameters (first respiration parameter, second respiration parameter, ---) as will be described later.

The respiration sensor 20 transmits the measured values of each respiration parameter to the respiration state display device 10. In the example of FIG. 1, the respiration sensor 20 performs transmission processing by wireless communication, but may perform transmission processing by wired connection.

Next, the configuration of the respiratory condition display device 10 will be described with reference to FIG. The respiratory state display device 10 includes an input / output interface 101, a control unit 104, a speaker 107, a storage unit 108, and a display unit 109.

The input / output interface 101 (input unit) acquires the body index (described later) and measured values of various respiratory parameters of the subject P. The input / output interface 101 may transmit various data to an external device (including the respiration sensor 20). In this example, the input / output interface 101 includes an operation unit 102 and a transmission / reception unit 103.

The operation unit 102 is an input interface that receives input from a user (for example, a doctor, a nurse, or the like), and includes, for example, buttons, knobs, knobs, and the like provided on the housing of the respiratory state display device 10. The user inputs the body index of the subject P by operating the operation unit 102. The body index is data indicating the body size of the subject P, and preferably the “body weight” of the subject P, but is not necessarily limited thereto. The body index is, for example, “height and appearance (in other words, body type, lean shape, normal, thick)”, “age (number of months since birth)”, “age and appearance (skin shape, normal, ”And“ gender and age ”. The operation unit 102 supplies data input from the user to the control unit 104.

The transmission / reception unit 103 receives measured values of various respiratory parameters (tidal volume, maximum airway pressure, respiratory rate, EtCO2, etc.) transmitted from the respiratory sensor 20. The transmission / reception unit 103 supplies the received measurement values of various respiratory parameters to the control unit 104. The transmission / reception unit 103 may appropriately transmit data to an external device including the respiration sensor 20. The transmission / reception unit 103 may be anything that implements various wireless communication standards, and may be configured to perform wired communication.

The control unit 104 performs various controls including display control of the display unit 109. The control unit 104 may be configured to read and execute various programs from the storage unit 108. Further, at least a part of the processing of the control unit 104 may be realized by various circuits.

The control unit 104 includes an index calculation unit 105 and a display control unit 106. The index calculation unit 105 calculates an index (specific value / value range related to normal or abnormal) of each respiratory parameter based on the above-described body index. Details of the index calculation process will be described later with reference to FIG.

The display control unit 106 generates a display screen that displays the index of each respiratory parameter calculated by the index calculation unit 105 and the measured value of each respiratory parameter of the subject P, and displays the display screen on the display unit 109. A detailed example of the display control of the display control unit 106 will be described later with reference to FIG.

The speaker 107 is a sounding device that emits electronic sounds and messages. The speaker 107 outputs an alarm sound or the like according to the control of the control unit 104.

The memory | storage part 108 is a memory | storage device which memorize | stores various data (For example, the measured value of each respiration parameter of the test subject P, the program which the control part 104 runs, etc.). For example, the storage unit 108 may be a built-in nonvolatile memory or a hard disk, or a USB (UniversalUniversSerial Bus) memory configured to be detachable from the respiratory state display device 10.

The display unit 109 is a display device such as an LCD (Liquid Crystal Display) or a CRT (Cathode Ray Tube) provided on the casing of the respiratory condition display device 10. The display unit 109 may be a monitor device configured to be detachable from the respiratory state display device 10. The display unit 109 displays a display screen (such as FIG. 4 described later) generated by the display control unit 106.

The display unit 109 and the operation unit 102 may be integrated. That is, the display unit 109 and the operation unit 102 may be a touch panel (or similar configuration).

Next, details of the index calculation processing of each respiratory parameter by the index calculation unit 105 will be described. The index calculated by the index calculation unit 105 indicates at least one of normal and abnormal respiratory parameters. Here, the term “normal” includes a normal value (in other words, a standard value that is uniquely determined) and a normal value range (standard value range). Similarly, an abnormality includes an abnormal value and an abnormal value range. For example, the index indicating the normality of the respiration rate may be a normal value (uniquely determined value) such as “37 times” or a normal value range (value range) such as “35 times to 40 times”.

The index calculation unit 105 calculates an index according to the number of respiratory parameters that are measured by the respiratory sensor 20. For example, when the respiration sensor 20 measures only the tidal volume (first respiratory parameter), the index calculating unit 105 calculates an index (first index) related to the tidal volume (first respiratory parameter). When the respiration sensor 20 measures the tidal volume (first respiration parameter) and the respiration rate (second respiration parameter), the index calculation unit 105 uses the index (first respiration parameter) regarding the tidal volume (first respiration parameter). An index (second index) regarding the index) and the respiratory rate (second respiratory parameter) is calculated.

Hereinafter, a specific calculation process will be described with reference to FIG. The index calculation unit 105 performs a calculation process using a calculation formula, a calculation table, and a body index (for example, weight, age, etc.). FIG. 3A is a diagram illustrating a calculation formula regarding the tidal volume. The index calculation unit 105 calculates a tidal volume index that matches the weight of the subject P by substituting the weight of the subject P into the calculation formula shown in FIG. For example, when the weight of the subject P is 3000 g, the index calculation unit 105 calculates the index of tidal volume (normal value of tidal volume) as 21 ml.

In FIG. 3A, the index of tidal volume is calculated as a specific value, but it may be calculated as a value range. FIG. 3B is a calculation formula when the index of the tidal volume is calculated as a range. For example, when the weight of the subject P is 3000 g, the index calculation unit 105 calculates the index of the tidal volume (normal value range of the tidal volume) as 19 ml to 23 ml using this calculation formula (FIG. 3B). In addition, the index calculation unit 105 may calculate an abnormal value range by using this normal tidal volume range.In the above example, the index calculation unit 105 performs the tidal ventilation of the subject P having a weight of 3000 g. The amount is “less than 19 ml” or “23 ml or more” as an abnormal value range.

Also, the index calculation unit 105 may calculate an index for each respiratory parameter using a table as shown in FIG. FIG. 3C is a table showing the weight and index (normal value range of tidal volume, abnormal value range of tidal volume) when tidal volume is handled as a respiratory parameter. The index calculation unit 105 calculates a tidal volume index (a normal value range of the tidal volume, an abnormal value range of the tidal volume) by comparing the body weight and the table (FIG. 3C). The unit 105 calculates that the normal value range of the tidal volume is 20 to 30 ml when the weight of the subject P is 3500 g.

In the above example (FIGS. 3A to 3C), the index of the respiratory parameter (tidal volume) is calculated based on the body weight, but is not necessarily limited thereto. FIG. 3D is a table showing the relationship between the age and the index of the respiratory parameter (tidal volume). The index calculation unit 105 compares the age of the subject P (the number of months since birth) with the table (FIG. 3D) to determine the index of the tidal volume (the normal value range of the tidal volume, the tidal volume level). Calculate the abnormal value range. For example, the index calculation unit 105 calculates that the normal value range of the tidal volume is 33 to 43 ml when the age of the subject P is 3 months.

Further, as shown in FIG. 3E, an index of a respiration parameter (tidal volume) may be calculated in consideration of appearance in addition to age. The tables in FIG. 3D and FIG. 3E are effective when the exact weight of the subject P is not known.

The index calculation unit 105 may calculate a respiratory parameter index in consideration of gender and the like in addition to the above example.

In the above description, the tidal volume has been described as an example, but the index calculation unit 105 can calculate indexes of other respiratory parameters (EtCO2, maximum airway pressure, respiratory rate, etc.) using the same method. Good. Note that the index calculation unit 105 can also calculate an index using a predetermined rule other than a calculation formula or a table if a body index is used.

As described above, the index calculation unit 105 may calculate an index for each respiratory parameter according to a predetermined rule using a body index (weight, etc.). Further, the user may edit the above-described calculation formula (FIG. 3A, etc.) and calculation table (FIG. 3C, etc.) as appropriate.

Next, display screen control by the display control unit 106 will be described. The display control unit 106 generates a display screen that displays the index of each respiratory parameter calculated by the index calculation unit 105 as described above and the measured value of each respiratory parameter of the subject P together. Here, the display may be a numerical display or an illustration. Details will be described with reference to FIGS. The display screen is displayed on the display unit 109.

First, the simplest display example will be explained. 4A to 4D are diagrams showing display screens on which a measured value (first measured value) and an index (first index) of one respiratory parameter (first respiratory parameter) are displayed. The display control unit 106 generates a display screen (FIGS. 4A to 4D) that displays a measured value (first measured value) and an index (first index) of one respiratory parameter (first respiratory parameter). To do.

In FIG. 4A, in addition to the measured value of tidal volume (Vte), an index (normal range) calculated based on body weight (body index) is displayed as a numerical value. Further, in the example of FIG. 4A, the weight (4000 g) of the subject P is also displayed, but may not be displayed. As shown in the figure, a normal value range (25 ml to 33 ml) corresponding to 4000 g which is the weight of the subject P is displayed.

In FIG. 4B, in addition to the measured value of the tidal volume (Vte), an index (normal value range) calculated based on the body weight (body index) is shown (displayed graphically). As shown in the figure, a normal value range (25 ml to 33 ml) corresponding to the weight of the subject P of 4000 g and the measured value are displayed in a horizontal bar graph.

FIG. 4C is a diagram corresponding to FIG. 4A, and is a display screen when the weight of the subject P is 3000 g. As shown in the figure, the index (normal value range) of the tidal volume (Vte) is 18 ml to 23 ml according to the body weight. In this example as well, the measured value is 30 ml as in FIG. 4A, but the user (doctor or the like) can recognize that the tidal volume (Vte) of the subject P is outside the normal value range when considering the body weight.

FIG. 4D is a diagram corresponding to FIG. 4B, and is a display screen when the weight of the subject P is 3000 g. As shown in the drawing, a horizontal bar graph is displayed in which the index (normal value range) of the tidal volume (Vte) is 18 ml to 23 ml according to the body weight. In this example as well, the measured value is 30 ml as in FIG. 4A, but the user can easily recognize from the bar graph that the tidal volume (Vte) of the subject P is outside the normal value range considering the weight.

Note that the display control unit 106 updates the graph and display each time the measurement value is updated. The same applies hereinafter.

4A to 4D, the display control unit 106 generates a display screen that displays the measured values and indices of one respiratory parameter. However, when the subject P is an infant, the tidal volume of the subject P is small. Therefore, for example, when only the exhaled carbon dioxide concentration is displayed as a respiration parameter, the following problem occurs.
(1) Since the tidal volume is small, it is difficult to accurately detect the exhaled carbon dioxide concentration.
(2) When the exhaled carbon dioxide concentration is low, it is difficult to determine whether the cause is an air leak in the vicinity of the mask 30 or the lung is occluded.

Therefore, it is preferable to comprehensively grasp the measured values of a plurality of respiratory parameters (first respiratory parameter, second respiratory parameter, ---). Hereinafter, an example of a display screen for displaying a plurality of respiratory parameters will be described. The display control unit 106 includes measured values (first measured value, second measured value, ---) of two or more respiratory parameters (first respiratory parameter, second respiratory parameter, ---) and an index (first A display screen (FIGS. 5 to 11) for displaying the index, the second index, and ――) is generated.

FIG. 5 (A) and FIG. 5 (B) are examples in which the measured value and index of respiratory rate (RR) are displayed in addition to the measured value and index of tidal volume (Vte). FIG. 5A shows the case where the weight is 3000 g, and FIG. 5B shows the case where the weight is 6000 g.

5A and 5B, the measured value and normal value range of tidal volume (Vte) and the measured value and normal value range of respiratory rate (RR) are displayed. Here, on each display screen, a normal value range considering the weight is displayed. For example, when the body weight is 3000 g, the normal value range of the respiration rate is 34 to 40 times (FIG. 5A), and when the weight is 6000 g, the normal value range of the respiration rate is 38 to 42 times ( FIG. 5 (B)). Therefore, even if the measured values of the respiratory rate are both 37 times, the user (doctor or the like) can grasp that the subject P having a weight of 6000 g has a slightly lower respiratory rate.

FIG. 5 shows an example of numerical display, but it goes without saying that measured values and indicators can be displayed graphically. Hereinafter, various variations of the graphical display (illustrated) will be described.

FIG. 6 is a display screen on which measured values and normal values of the tidal volume (Vte), respiratory rate (RR), and maximum airway pressure (PIP) of the subject P are displayed. The display screen also displays various respiratory waveforms. The display control unit 106 shows the measured values of each respiratory parameter of the subject P as a bar graph indicated by hatching. Further, the display control unit 106 displays a normal value (index) in consideration of the body index (preferably body weight) of the subject P together with the bar graph. The user refers to this display screen (FIG. 6), so that the tidal volume (Vte) of the subject P is slightly less than the normal value, the respiration rate (RR) is significantly less than the normal value, and It can be recognized that the maximum airway pressure is slightly higher than the normal value. In addition, in the example of FIG. 6, although each measured value of the test subject P was shown by hatching, it cannot be overemphasized that it may show with a color and other display effects.

Details of the display screen of FIG. 6 will be further described with reference to FIGS. 7 (A) and 7 (B). FIG. 7A is a bar graph of each respiration parameter for the subject P having a weight of 3000 g, and FIG. 7B is a bar graph of each respiration parameter for the subject P having a weight of 6000 g. For clarity of explanation, the measured values of the respiratory parameters (tidal volume, respiratory rate, maximum airway pressure) in FIGS. 7 (A) and 7 (B) are the same. In the example of FIG. 7, the tidal volume (Vte) is 21 ml, the respiratory rate (RR) is 36 times, and the maximum airway pressure (PIP) is 25 cmH 2 O.

Here, it is assumed that the index calculation unit 105 calculates the normal value when the weight is 3000 g as follows.
・ Tidal volume (Vte) = 21ml
・ Respiration rate (RR) = 37 times ・ Maximum airway pressure (PIP) = 25 cmH2O

Similarly, it is assumed that the index calculation unit 105 calculates the normal value when the weight is 6000 g as follows.
・ Tidal volume (Vte) = 42ml
・ Respiration rate (RR) = 40 times ・ Maximum airway pressure (PIP) = 25 cmH2O

FIG. 7A shows a display screen when the weight of the subject P is 3000 g under the above conditions (extracted part of FIG. 6), and a display screen when the weight is 6000 g (extracted part of FIG. 6). Is FIG. 7 (B).

The display control unit 106 generates a bar graph based on the comparison between the measured value and the normal value. When the body weight is 3000 g, the normal value of the tidal volume (Vte) is 21 ml, and the measured value is also 21 ml, so the bar graph of the measured value matches the normal value (FIG. 7A). On the other hand, when the body weight is 6000 g, the normal value of the tidal volume (Vte) is 42 ml and the measured value is also 21 ml, so the bar graph of the measured value is less than the normal value (FIG. 7B). The display control unit 106 switches the display according to the body size of the subject P in this way. By referring to this graph, a user (doctor or the like) can grasp whether or not the subject is in an appropriate breathing state with respect to the body index (weight) of the subject P.

FIG. 8 is a display screen in which the measured values and normal value ranges of the tidal volume (Vte), respiratory rate (RR), and maximum airway pressure (PIP) of the subject P are displayed in a pie chart. The display control unit 106 shows a measured value of each respiratory parameter of the subject P by a pie chart, and each normal value range is indicated by a bold line portion on the arc. This normal value range (thick line portion on the arc) varies depending on the body index (weight, etc.) of the subject P. The pie chart operates like a so-called tachometer (rotometer) in accordance with the update of the measurement value.

The details of the display screen of FIG. 8 will be further described with reference to FIGS. 9 (A) and 9 (B). FIG. 9A is a pie chart of each respiration parameter for the subject P having a weight of 3000 g, and FIG. 9B is a pie chart of each respiration parameter for the subject P having a weight of 6000 g. In the example of FIG. 9, the tidal volume (Vte) of the subject P is 21 ml, the respiratory rate (RR) is 36 times, and the maximum airway pressure (PIP) is 25 cmH 2 O regardless of the body weight.

Here, it is assumed that the index calculation unit 105 calculates the normal value range when the weight is 3000 g as follows.
・ Tidal volume (Vte) = 19 to 23 ml
・ Respiration rate (RR) = 35 to 39 times ・ Maximum airway pressure (PIP) = 23 cmH2O to 27 cmH2O

Similarly, it is assumed that the index calculation unit 105 calculates the normal value range when the weight is 6000 g as follows.
・ Tidal volume (Vte) = 40ml-44ml
・ Respiration rate (RR) = 38 to 42 times ・ Maximum airway pressure (PIP) = 23 cmH2O to 27 cmH2O

The display control unit 106 generates a pie chart based on the comparison between the measured value and the normal value range. As shown in the drawing, the normal value range on the arc changes according to the body weight (FIGS. 9A and 9B). When the body weight is 3000 g, the normal value range of the tidal volume (Vte) is 19 ml to 23 ml and the measured value is also 21 ml, so the pie chart of the measured values falls within the normal value range (thick line arc) (FIG. 9). (A)). On the other hand, when the body weight is 6000 g, the normal value of the tidal volume (Vte) is 42 ml and the measured value is also 21 ml, so the pie chart of the measured value is less than the normal value range (FIG. 9B). . The user (doctor or the like) can also grasp whether or not the patient is in an appropriate breathing state with respect to the body index (weight) of the subject P by referring to this graph.

FIG. 10 is a display screen on which a measured value and a normal value of the tidal volume (Vte), respiratory rate (RR), maximum airway pressure (PIP), and EtCO2 of the subject P are displayed in a radar chart. The display control unit 106 indicates the measured values of each respiratory parameter of the subject P by solid lines on the radar chart, and indicates each normal value by dotted lines on the radar chart. This normal value (dotted line on the radar chart) varies depending on the body index (weight, etc.) of the subject P.

The details of the display screen of FIG. 10 will be further described with reference to FIGS. 11 (A) and 11 (B). FIG. 11A is a radar chart of each respiratory parameter for the subject P having a weight of 3000 g, and FIG. 11B is a radar chart of each respiratory parameter for the subject P having a weight of 6000 g. In the following description, it is assumed that the measured value and the normal value are the same as those in FIG. For EtCO2 not described, the measured value and normal value are both 38 mmHg.

The display control unit 106 describes a chart (diamond chart indicated by a dotted line) in accordance with a comparison between a normal value calculated from a body index (weight, etc.) and a measured value. A normal value chart is generally square. For example, when considering the tidal volume when the body weight is 6000 g, the display control unit 106 plots a plot of the measured value from the data (measured value = 21 ml, normal value = 42 ml) at a location half of the corresponding side. . The display control unit 106 describes the measurement value chart by connecting the plots.

11A and 11B are common measurement values, but different normal values. Therefore, the user can recognize at a glance that the respiratory state of the subject P weighing 6000 g is abnormal by referring to FIG.

Note that each display method (FIGS. 5, 6, 8, and 10) may be switched as appropriate according to user settings.

Next, the effect of the respiratory condition display device 10 according to the present embodiment will be described. As described above, the index calculation unit 105 calculates the index (first index) of the respiration parameter (first respiration parameter) of the subject P based on the body index (weight, age, sex, etc.). The index indicates at least one of normal and abnormal respiratory parameters. Then, the display control unit 106 generates a display screen in which the measured value (first measured value) and the index (first index) of the respiration parameter of the subject P are displayed (illustrated or numerically displayed). By referring to this display screen, the user can refer to the normal value range in consideration of the body size of the subject P and the measured value together. That is, the user can grasp whether or not the breathing state of the subject P matches the size of the subject P's body.

Also, it is preferable that the index calculation unit 105 calculates an index (first index, second index, ---) of a plurality of respiratory parameters (first respiratory parameter, second respiratory parameter, ---). Then, the display control unit 106 displays the plurality of indices (first index, second index, ---) and a plurality of measurement values (first measurement value, second measurement value, ---) together. Is preferable (FIGS. 5 to 11). As described above, when the subject P is an infant or the like, the tidal volume is small. Therefore, there is a possibility that the respiratory state of the subject P cannot be accurately recognized only by referring to the measured value of one respiratory parameter. However, by targeting a plurality of respiratory parameters, it is possible to comprehensively grasp the respiratory state of the subject P.

Further, the display control unit 106 displays the measured values and indices of each respiratory parameter in a graph display (pie graph, bar graph, radar chart). Thereby, the user can grasp | ascertain the respiratory condition of the test subject P at a glance without reading a numerical value.

For example, when displaying with a bar graph (FIGS. 6 and 7), it can be easily recognized from the height of the bar graph how much the measured value is relative to the normal value according to the body size.

Similarly, when a pie chart is displayed (FIGS. 8 and 9), it can be easily recognized from the position of the pie chart how much the measured value is relative to the normal value corresponding to the body size. .

When the display is performed with the radar chart (FIGS. 10 and 11), the user can easily recognize the breathing state of the subject P from the size and shape of the radar chart. For example, when the chart showing the measured values is generally small, the user can recognize that the ventilation to the subject P is generally small. Further, the user can appropriately grasp symptoms such as hyperventilation from the shape of the radar chart.

As described above, the body index can handle weight, age, appearance, gender, and the like. However, when the subject P is a child or an infant, the weight is the parameter that most reflects the size of the subject P's body. Therefore, more accurate display can be performed by treating body weight as a body index.

<Embodiment 2>
Next, the respiratory management system 1 according to the second embodiment will be described. The present embodiment is characterized in that the respiratory state display device 10 handles abnormalities such as a measured value of a respiratory parameter of the subject P and wearing of a mask. Hereinafter, the points of the present embodiment different from the first embodiment will be described. In addition, about the process part etc. which attached | subjected the same name and code | symbol as Embodiment 1, unless otherwise mentioned, the operation | movement similar to Embodiment 1 shall be performed.

The configuration of the respiratory management system 1 is the same as in FIG. FIG. 12 is a block diagram showing a configuration of the respiratory condition display device 10 according to the present embodiment. The respiratory condition display device 10 according to the present embodiment further includes an abnormality detection unit 110 in addition to the configuration of FIG.

The abnormality detection unit 110 detects an abnormality in the respiratory state of the subject P by comparing the measured value of each respiratory parameter with an index (normal value range or the like). Further, the abnormality detection unit 110 may also calculate an abnormality in wearing the mask 30 and the like. Hereinafter, a detailed example of abnormality detection will be described.

Detecting abnormalities in breathing parameters will be described taking the tidal volume (Vte) as an example. Assume that the index calculation unit 105 calculates the normal value range of the tidal volume (Vte) of the subject P as 25 to 30 ml using the above-described method. The abnormality detection unit 110 determines that the measured value of the tidal volume (Vte) of the subject P is outside the normal value range, and determines that it is normal if the measured value is outside the normal value range. For example, the abnormality detection unit 110 determines an abnormality if the measured value of the tidal volume is 22 ml, and determines that the measured value is normal if it is 28 ml. That is, the abnormality detection unit 110 performs an abnormality determination by comparing the measured value with an index (normal value, normal value range, abnormal value, abnormal value range). The determination of other respiratory parameters (EtCO2, maximum airway pressure, respiratory rate, etc.) is similarly performed.

The abnormality detection unit 110 may detect not only a measurement value abnormality of each respiratory parameter (tidal volume, EtCO2, maximum airway pressure, respiration rate, etc.) but also other abnormality such as a mask leak. For example, the abnormality detection unit 110 calculates the degree of mask leak using the following equation.
Mask leak rate = 100 × ((Vout−Vin) / (Vin))
Vout: exhaled breath volume (ml)
Vin: Intake volume (ml)

The abnormality detection unit 110 performs abnormality detection by comparing the mask leak rate with a predetermined threshold (for example, 20%). For example, when the mask leak rate is 25% and the threshold is 20%, the abnormality detection unit 110 detects an abnormality in which the mask leak rate is large.

Note that the abnormality detection processing by the abnormality detection unit 110 may be performed using information other than the measured value of the respiratory parameter. For example, the abnormality detection unit 110 may determine whether or not the pressing state of the mask 30 is appropriate using the measurement value of the pressure sensor attached to the mask 30.

The abnormality detection unit 110 notifies the display control unit 106 of information indicating the content of the detected abnormality (hereinafter referred to as abnormality information). The abnormality information includes, for example, the location where the abnormality has occurred, the type of abnormality, and the degree of abnormality (slight, severe, etc.).

When the abnormality detection unit 110 detects any abnormality, the control unit 104 outputs an alarm sound through the speaker 107. When the abnormality detection unit 110 detects any abnormality, the display control unit 106 performs notification based on the abnormality information. For example, the display control unit 106 notifies the user by changing the display effect (color, blinking presence / absence, etc.) of the respiratory parameter that is in an abnormal state.

FIG. 13 shows an example of a display screen for notifying abnormality. It is assumed that the abnormality detection unit 110 determines that the measured respiratory rate (RR) value is abnormal. The display control unit 106 changes the display effect of the respiratory rate (RR) according to the determination of the abnormality detection unit 110. In this example, the display control unit 106 displays the measurement value of the respiratory rate (RR) with white letters. This example is merely an example, and the color of the character may be changed, or the size of the character may be changed. In addition to the display, the control unit 104 may control the speaker 107 to output an alarm sound.

Further, the display control unit 106 may generate a display screen that can grasp the detected part of the abnormality. Details will be described with reference to FIG.

The display control unit 106 displays a schematic diagram simulating the respiratory system (face, trachea, lungs) of the subject P on the display screen as illustrated. The display control unit 106 also displays an alarm (abnormal part, abnormality type, degree of abnormality, etc.) based on the abnormality information detected by the abnormality detection unit 110 on a schematic diagram of the respiratory system. For example, when a mask leak is detected, the display control unit 106 displays “Mask Leak” around the mouth of the schematic diagram (FIG. 14). Similarly, when an abnormality that the tidal volume is too large is detected, the display control unit 106 displays “High Volume” around the lung in the schematic diagram (FIG. 14).

Note that the display control unit 106 may display the measurement value and the index of the respiratory parameter on the display screen in the same manner as in FIG. In this example, the measured value (40 times) and normal value range (35 times to 45 times) of the respiratory rate (RR) are displayed.

Next, the effect of the respiratory condition display device 10 according to the present embodiment will be described. As described above, in the present embodiment, the abnormality detection unit 110 is configured to detect an abnormality in the respiratory system of the subject P. By notifying this abnormality (outputting an alarm sound, changing the display), a user (doctor or the like) can easily detect the abnormality of the subject P.

The display control unit 106 can also display a schematic diagram of the subject P on the display screen and display abnormality information on the schematic diagram. A user (doctor or the like) can recognize at a glance what kind of abnormality has occurred in the subject P by referring to the display screen (FIG. 14).

As mentioned above, the invention made by the present inventor has been specifically described based on the embodiments. However, the present invention is not limited to the embodiments already described, and various modifications can be made without departing from the scope of the invention. It goes without saying that it is possible.

For example, the breathing state display device 10 and the breathing sensor 20 may be configured integrally (in other words, the same device may be used). Further, the breathing state display device 10 may be configured to generate a display screen (for example, any one of FIGS. 4 to 11), transmit the data on the display screen to another device, and display the data on the other device. Good.

The processing of the above-described control unit 104 (index calculation unit 105, display control unit 106, abnormality detection unit 110) can be realized as a computer program that operates in the respiratory condition display device 10. That is, the control unit 104 includes a CPU (Central Processing Unit) and a circuit.

Here, the program can be stored using various types of non-transitory computer readable medium and supplied to the computer. Non-transitory computer readable media include various types of tangible storage media (tangible storage medium). Examples of non-transitory computer-readable media include magnetic recording media (eg flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (eg magneto-optical discs), CD-ROMs (Read Only Memory), CD-Rs, CD-R / W, semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable ROM), flash ROM, RAM (random access memory)) are included. The program may also be supplied to the computer by various types of temporary computer-readable media. Examples of transitory computer readable media include electrical signals, optical signals, and electromagnetic waves. The temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.

Although the present invention has been described in detail and with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention.
This application is based on Japanese Patent Application No. 2015-182975 filed on September 16, 2015, the contents of which are incorporated herein by reference.

DESCRIPTION OF SYMBOLS 1 Respiration management system 10 Respiration state display apparatus 101 Input / output interface 102 Operation part 103 Transmission / reception part 104 Control part 105 Index calculation part 106 Display control part 107 Speaker 108 Storage part 109 Display part 110 Abnormality detection part 20 Respiration sensor 30 Mask 40 Ambu bag

Claims

An input unit that acquires a body index indicating the size of the body of the subject, and acquires a first measurement value that is a measurement value of the first respiratory parameter of the subject;
An index calculating unit that calculates a first index indicating at least one of normal and abnormal first respiratory parameters based on the body index;
A display control unit for generating a display screen for displaying the first index and the first measurement value;
A breathing state display device.
The input unit obtains a second measurement value that is a measurement value of the second respiratory parameter of the subject,
The index calculation unit calculates a second index indicating at least one of normal and abnormal of the second respiratory parameter based on the body index,
The display control unit displays the first index and the first measurement value on the display screen, and displays the second index and the second measurement value.
The respiratory state display device according to claim 1.
The display control unit illustrates the first index and the first measurement value on the display screen.
The respiratory state display device according to claim 1 or 2.
The display control unit
The respiratory state display device according to claim 2, wherein the display screen displaying a radar chart including information on the first index, the second index, the first measurement value, and the second measurement value is generated.
The display control unit
The respiratory state display device according to any one of claims 1 to 3, wherein the display screen displaying the first index and the first measurement value by a bar graph is generated.
The display control unit
The respiratory state display device according to any one of claims 1 to 3, wherein the display screen displaying the first index and the first measurement value by a pie chart is generated.
The respiratory state display device according to any one of claims 1 to 6, further comprising an abnormality detection unit that detects an abnormality of the first measurement value by comparing the first measurement value and the first index. .
The respiratory condition display device according to claim 7, wherein the abnormality detection unit detects a mask leak based on a single expiration volume and a single intake volume.
The breathing state display device according to claim 7 or 8, wherein when the abnormality detection unit detects an abnormality, the display control unit performs notification based on abnormality information indicating a content of the abnormality.
The display control unit
The respiratory state display device according to claim 9, wherein a schematic diagram of the respiratory system of the subject is displayed on the display screen, and an alarm based on the abnormality information is displayed on the schematic diagram.
The respiratory state display device according to any one of claims 7 to 10, further comprising a speaker that outputs an alarm sound when the abnormality detection unit detects an abnormality.
The respiratory state display device according to any one of claims 1 to 11, wherein the body index is a weight of the subject.
Obtaining a body index indicating the size of the body of the subject, and obtaining a first measurement value that is a measurement value of the first respiratory parameter of the subject;
Calculating a first index indicating at least one of normal and abnormal first respiratory parameters based on the physical index;
Generating a display screen for displaying the first index and the first measurement value;
Execute the breathing state display method.
On the computer,
Obtaining a body index indicating the size of the body of the subject, and obtaining a first measurement value that is a measurement value of the first respiratory parameter of the subject;
Calculating a first index indicating at least one of normal and abnormal first respiratory parameters based on the physical index;
Generating a display screen for displaying the first index and the first measurement value;
A breathing state display program that executes