JP6901893B2 - Electrocardiogram information processing device and its control method - Google Patents

Description

The present invention relates to an electrocardiogram information processing device and a control method thereof.

In recent years, a digital electrocardiograph that records an electrocardiogram signal as digital data has been widely used. By handling the electrocardiogram signal as digital data, it is possible to automatically analyze the electrocardiogram waveform by applying digital signal processing technology, and it has become established as a function to support the interpretation of the electrocardiogram by medical personnel.

Conventionally, automatic analysis of an electrocardiogram waveform and management and viewing of analyzed electrocardiogram waveform data have been performed by a dedicated device (electrocardiogram analysis device) different from the electrocardiograph. However, due to the higher definition of display devices installed in digital electrocardiographs and the improvement of processor performance, functions that previously required dedicated devices are now being installed in electrocardiographs (patented). Document 1).

Japanese Patent No. 4949685

In the automatic analysis of the electrocardiogram waveform, it is determined which of the findings classification known as, for example, the Minnesota code, the electrocardiogram waveform corresponds to, based on a predetermined determination condition. Since there is no stipulation as to what judgment conditions the actual ECG waveform should meet to correspond to a specific Minnesota code, the judgment conditions are determined by the manufacturer of the automatic analysis application, for example, the findings of a doctor and the characteristics of the ECG waveform. It is determined independently based on the relationship of. In some cases, a judgment is made regarding a unique finding classification that is not included in the Minnesota code or a finding classification that classifies the Minnesota code in more detail. The electrocardiogram waveform data, its automatic analysis result, and the electrocardiogram examination data including the subject information can be stored as a data file in a storage device built in an electrocardiograph or an electrocardiogram analyzer, or a removable recording medium such as a memory card. It is stored in an external storage device. Hereinafter, a device that handles electrocardiogram examination data, such as an electrocardiograph and an electrocardiogram analysis device, will be referred to as an electrocardiogram information processing device.

Then, the electrocardiogram information processing device provides a file list that displays a list of information on predetermined items for each of the electrocardiogram examination data stored in the accessible storage device (storage medium), and the user from the file list. Outputs (displays and prints) the electrocardiogram and automatic analysis results of the electrocardiogram examination data selected by.

However, the conventional file list displays a list of information such as measurement date and time and subject information (ID and / or name, gender, age) for each of the electrocardiogram examination data, and does not reflect the automatic analysis result. There wasn't. For example, when a large amount of electrocardiographic examination data is stored on the same measurement day due to mass examination, etc., it is desirable for doctors to preferentially confirm the electrocardiogram waveform for which highly severe findings are obtained in the automatic analysis results. .. However, in the past, the findings obtained by automatic analysis could not be confirmed without selecting the electrocardiogram test data and displaying or printing the automatic analysis results, and it is said that the automatic analysis results are fully utilized in the selection of electrocardiogram test data. I could not say it.

The present invention has been made in view of such problems of the prior art, and an object of the present invention is to realize an electrocardiogram information processing apparatus and a control method thereof that can use automatic analysis results for selection of electrocardiogram examination data. To do.

The above-mentioned purpose is to display a list display screen including a plurality of display items for each of the electrocardiogram examination data on the display device based on the acquisition means for acquiring the information of a plurality of predetermined items from the electrocardiogram examination data. It has a display means and a processing means for executing a predetermined process on the electrocardiogram examination data corresponding to the information selected on the list display screen, and the acquisition means automatically obtains the electrocardiogram waveform data as one of the information. The information on the severity of the findings included in the analysis result is acquired, and the display means displays a list display screen in which the information on the severity of the findings is included in a plurality of display items and can be sorted by the information on the severity of the findings. Let me
The above object is achieved by an electrocardiogram information processing apparatus characterized in that, for electrocardiographic examination data in which the information includes a plurality of information on the severity of findings, the information on the highest severity is displayed on a list display screen. ..

With such a configuration, according to the present invention, it is possible to realize an electrocardiogram information processing apparatus and a control method thereof that can use the automatic analysis result for selection of electrocardiogram examination data.

It is a block diagram which shows the functional structure example of the electrocardiograph which concerns on embodiment of this invention. It is a flowchart about the browsing operation of the electrocardiograph which concerns on embodiment. It is a figure which shows the example of the menu screen of the electrocardiograph which concerns on embodiment. It is a figure which shows the example of the file list displayed by the electrocardiograph which concerns on embodiment.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. Hereinafter, an embodiment of an electrocardiograph as an example of the electrocardiogram information processing apparatus according to the present invention will be described, but the present invention can be applied to any electronic device capable of handling electrocardiogram examination data. Such electronic devices include not only medical devices such as monitor devices and electrocardiogram analyzers, but also computer devices (personal computers, tablet terminals, smartphones, etc.) running appropriate application software. In order to carry out the present invention, it is sufficient that predetermined information can be obtained from the electrocardiogram examination data, and measurement of the electrocardiogram signal, recording of the electrocardiogram waveform data, and an automatic analysis function are not essential.

(Electrocardiograph configuration)
FIG. 1 is a block diagram showing a configuration example of an electrocardiograph 100 according to an embodiment of the present invention.
The electrode group 110 includes, for example, limb electrodes (4) and chest electrodes (6). The type and number of electrodes included in the electrode group 110 are determined by the type and number of electrocardiogram signals (inductions) measured by the electrocardiograph 100.

The electrode group 110 (electrocardiogram electrode) is connected to a connector included in the input unit 111 of the electrocardiograph 100. The input unit 111 has, for example, a protection circuit, an induction selector, an amplifier circuit, and the like, and outputs a preset type and number of electrocardiogram signals.
The A / D conversion unit 112 digitizes each of the electrocardiogram signals output from the input unit 111 and outputs them as electrocardiogram waveform data. The input unit 111 and the A / D conversion unit 112 are also called an analog front end (AFE).

The filter processing unit 113 applies a noise removal filter to the electrocardiogram waveform data input through the A / D conversion unit 112 according to the settings from the control unit 120. In the present embodiment, it is assumed that the filter processing unit 113 can selectively apply the myoelectric noise removal filter, the AC noise removal filter, and the drift noise removal filter as an example, but the type and number of filter processing are different. Not limited to these.
The speaker 114 is used by the control unit 120 to output, for example, a warning sound or a voice message.

The control unit 120 includes, for example, a ROM, a RAM, and a programmable processor, and controls the operation of the entire electrocardiograph 100 by expanding the control program stored in the ROM into the RAM and executing the programmable processor. In addition to the control program, various setting values and GUI data are stored in the ROM, which is appropriately used when the control program is executed. Also, at least a part of the ROM may be rewritable.

For example, the filter processing unit 113 may be realized by the programmable processor included in the control unit 120 executing the program, or may be realized by hardware such as ASIC or ASSP. The filter processing unit 113 may be realized by a combination of hardware and software.

The analysis unit 1201 corresponds to the automatic analysis function of the electrocardiogram waveform data realized by the control unit 120, and applies the automatic analysis process to the measured electrocardiogram waveform data. The automatic analysis process can be roughly divided into two types: measurement process and finding classification process. The measurement process is a process of detecting a division point (P, QRS, T) of an electrocardiogram and obtaining a measured value (RR interval, ST level, PQ, QRS width, QT, etc.). Further, the finding classification process is a process of determining the corresponding finding from the measured value and the preliminarily determined determination condition. The measured values given here are merely examples, and other measured values may be obtained.

In addition, the analysis unit 1201 includes information (grade) regarding the severity of the findings associated with the findings determined by the automatic analysis process in the automatic analysis result. In this embodiment, the grade is an integer of 0 when the severity is the lowest (no abnormality) and 2, 4, 6 as the severity increases. However, any information with permutations, including non-integer characters such as the alphabet, can be used as grades. The correspondence between the findings and the grade is predetermined. For example, in the case of findings suspected to be lethal arrhythmia, the grade corresponding to the highest severity is assigned.

A memory card can be attached to and detached from the card slot 116, and the control unit 120 can record the electrocardiogram test data on the mounted memory card and read the recorded electrocardiogram test data from the mounted memory card. .. The electrocardiogram examination data includes the electrocardiogram waveform data, the data of the automatic analysis result thereof, and the data of the subject information. ECG test data is generated for each test in a predetermined data format. The electrocardiogram examination data may be composed of a plurality of data files or may be composed of one data file.

The operation unit 117 is an input device in which a user (medical personnel) inputs various settings and instructions to the electrocardiograph 100, and buttons, keys, a touch panel (software key), and the like are generally used, but the operation unit 117 is not limited thereto. .. Input methods that do not require physical input operations, such as voice input, may be supported.

The display unit 118 is a display device such as an LCD, and is an electrocardiogram and / or analysis report based on the electrocardiogram being measured or the examination data stored in the memory card installed in the card slot 116 under the control of the control unit 120. , Display the menu screen, etc. In this embodiment, the display unit 118 is a touch display.
The printer 119 is, for example, a thermal printer, and prints out an electrocardiogram waveform and an analysis report in a predetermined format under the control of the control unit 120.

The power supply unit 121 is, for example, a secondary battery or a commercial power supply (AC adapter), and supplies electric power to each unit of the electrocardiograph 100.

The external I / F 123 is a general-purpose interface for connecting an external device by wire. In the present embodiment, the external I / F 123 is assumed to be an interface compliant with the USB 2.0 standard, but may be a general-purpose interface compliant with other standards. Further, the number of external I / F 123s may be two or more. Any external device 200 (for example, a USB memory or a personal computer) that can be connected via USB can be connected to the external I / F 123.

When measuring and recording an electrocardiogram signal using an electrocardiograph 100 having such a configuration, for example, when the electrocardiograph 100 is turned on, the electrode group 110 is located at a predetermined position on the body surface of the subject. An electrode pad or an electrode clip provided at one end of the electrode group 110 is attached, and a connector provided at the other end of the electrode group 110 is connected to the input unit 111.

When the electrode group 110 is connected to the input unit 111, the detected electrocardiogram signal is input to the input unit 111, and is processed by the A / D conversion unit 112, the filter processing unit 113, and the like to the control unit 120 as electrocardiogram waveform data. Entered. The control unit 120 uses a part of the internal RAM as a buffer and accumulates electrocardiogram waveform data for the latest predetermined number of seconds. Further, the control unit 120 starts displaying the electrocardiogram on the display unit 118 by using the electrocardiogram waveform data in the buffer.

When the recording start instruction is input from the operation unit 117, the control unit 120 measures from the time when the recording start instruction is input until the electrocardiogram waveform data for a predetermined recording time is accumulated in the buffer. Then, the control unit 120 (analysis unit 1201) executes an automatic analysis process on the electrocardiogram waveform data for the recording period stored in the buffer. The control unit 120 generates test data including electrocardiogram waveform data, automatic analysis result data, and subject information data, and is connected to a memory card installed in the card slot 116 or an external I / F 123. Record on device 200.

Further, the control unit 120 outputs the electrocardiogram waveform of the recording period and the automatic analysis result thereof to the display unit 118 and / or the printer 119 in a predetermined format. The operation described here is merely an example, and other operations can be executed depending on the setting such as the measurement mode.

The format of the inspection data is not limited, and may be composed of a plurality of data files or one data file. For example, when the data file including the subject information and the electrocardiogram waveform data and the data of the automatic analysis result are generated as separate data files, a plurality of data files related to the same test are recorded so that they can be discriminated. For example, each data file can be recorded in the same folder, or the same file name can be recorded with a different extension. When the test data is composed of one data file, a data file including the electrocardiogram waveform data, the data of the automatic analysis result thereof, and the data of the subject information is generated. These are merely examples, and inspection data may be generated by other methods.

(Browsing process)
Next, the viewing process of the electrocardiogram examination data in the present embodiment will be described with reference to FIGS. 2 to 4.
The process shown in the flowchart of FIG. 2 is realized by the control unit 120 executing the control program stored in the ROM.

For example, when a menu key realized as a software key is operated in the function key area of the display unit 118, the control unit 120 causes the display unit 118 to display the menu screen 300 as shown in FIG. 3A. The software key is operated by touch operation on the touch panel, pressing a hardware key button associated with the software key, or the like.

When the "file / communication" button 301 included in the menu screen 300 is operated, the control unit 120 causes the display unit 118 to display the file mode screen 310 shown in FIG. 3B. When the "file list" button 302 is operated on the file mode screen 310, the control unit 120 starts the operation of the browsing process shown in the flowchart of FIG.

In S201, the control unit 120 accepts the designation of the recording destination (a specific location (for example, a folder) in the built-in or external storage device) of the electrocardiogram examination data group to be displayed in the file list. Here, the specification of the recording destination can be accepted through the directory selection screen displayed on a general OS. When displaying the file list of the recording destination specified when the "file list" button 302 is operated, S201 does not have to be executed.

In S203, the control unit 120 acquires information about each of the electrocardiogram examination data recorded in the designated recording destination. The type of information acquired here depends on the type of display items in the file list. The display items of the file list shall be predetermined (the type and number may be changed by the user). Here, at least information (grade) regarding subject information (identification information, name, gender, age, etc.), measurement date and time, data file identification information, and severity of findings obtained by automatic analysis shall be acquired. The automatic analysis result data may be recorded as a data file separate from the analyzed electrocardiogram waveform data, or may be recorded in the same data file. The control unit 120 acquires necessary information according to the recording method of the electrocardiogram examination data. Here, it is assumed that all the inspection data include the data of the automatic analysis result, but the data of the automatic analysis result may not be available depending on the measurement mode.

After acquiring the information from all the electrocardiogram examination data to be displayed, the control unit 120 displays the file list on the display unit 118 in S205. FIG. 4A is a diagram showing an example of initial display of the file list. The file list is a list display screen that selectively displays the electrocardiogram examination data recorded in the designated recording destination.

The file list 400 has a heading area 401, a list area 402, and a function key area 403.
The heading of the display item is displayed in the heading area 401. Among the headings, those that can be used as sort keys are given the mark 404. In the example of FIG. 4A, the identification number (No.) of the electrocardiogram examination data, the ID, the name (NAME), the measurement date and time (DATE), and the grade (GRADE), which are the identification information of the subject, can be used as the sort keys. It is displayed as a heading.

In the list area 402, the contents of the display items are displayed in a list as shown in 406 for each of the electrocardiogram examination data recorded in the designated recording destination. A scroll bar 407 is provided in the list area 402 in case there are a large number of electrocardiographic examination data that cannot be displayed on one screen. When the control unit 120 detects an operation of designating a position (for example, a tap operation on the touch panel) in the list area 402 excluding the scroll bar 407, the control unit 120 gives an instruction to select ECG test data corresponding to the designated position. Recognize as. When the range designation operation or the designation operation of a plurality of positions is detected, the control unit 120 recognizes the display within the designated range or the selection instruction of the plurality of electrocardiogram examination data corresponding to the plurality of positions. There is no particular limitation on the method of selecting the electrocardiogram examination data whose information is displayed in the file list, and it can be configured to accept general selection operations such as touch operations and key operations. Further, the control unit 120 can make the display method in the file list different so that the selected electrocardiographic examination data and the non-selected electrocardiographic examination data can be distinguished.

In the function key area 403, a software key for the user to give an instruction to the electrocardiograph 100 is displayed. Here, a key (display key 408 and print key 409) instructing to apply a predetermined process to the electrocardiogram waveform data of the electrocardiogram examination data and the data of the automatic analysis result corresponding to the information selected in the list area 402, and the key (display key 408 and print key 409). A search key 410 instructing the user to transition to the search condition input screen and a return key 411 instructing the user to return to the previous screen (FIG. 3B) are displayed. The software key displayed in the function key area 403 is switched each time the page feed key 412 is operated. The display "1/4" of the page feed key 403 indicates that a total of 4 pages (4 sets) can be switched, and that the 1st page is currently displayed.

In this embodiment, grade 405, which is information on the severity of findings obtained by automatic analysis, is included as a display item of the file list, and grade 405 can be used as a sort key (file list is grade 405). It is possible to sort by).

When the heading of the display item that can be used as the sort key is operated during the display of the file list (S207, Y), the control unit 120 assumes that the sort key change instruction has been received, and displays the information acquired in S203 as the operation. Sort by item and update the display of the list area 402 (S209).

Further, when the keys for instructing the execution of processing on the file such as the display key 408 and the print key 409 are operated while the file list is displayed (S211 and Y), the control unit 120 is selected at that time. For the electrocardiogram examination data, the process corresponding to the operated key is executed (S213), and the process is returned to S207. When the display key 408 or the print key 409 is operated, the control unit 120 displays the electrocardiogram waveform data and the automatic analysis result data included in the selected electrocardiogram examination data on the display unit 118 in a predetermined format, or the printer 119. Print with. When printing is completed, the control unit 120 automatically returns the process to S207. Further, when the file display process is executed, the control unit 120 returns the process to S207 when an instruction to return to the file list is detected.

FIG. 4B shows an example of a file list displayed in S209 when the grade 405 of the heading area 401 is operated in the state of FIG. 4A. When sorting by a specific item according to the user's instruction, the control unit 120 displays the mark 413 of the display item used as the sort key, and the display of the mark 404 (for example, color) when the item is not used as the sort key. Let me. When the display item currently used as the sort key is specified as the sort key again, the control unit 120 reverses the sort order (ascending order, descending order).

As described above, in the present embodiment, since the information on the severity of the findings included in the automatic analysis result data of the electrocardiogram examination data is included as the display item of the file list, the individual electrocardiogram examination data is conventionally selected. It is possible to list the severity of findings by automatic analysis that could not be confirmed without displaying. In addition, by making it possible to sort the file list using the information on the severity of the findings included in the automatic analysis results as a sort key, the electrocardiogram waveform data in which the findings with high (or low) severity are obtained in the automatic analysis is included. It becomes possible to easily identify the electrocardiogram examination data.

Therefore, it is possible to confirm the ECG waveform, which may actually have a high severity, and the findings of its automatic analysis without omission and with priority. Further, for example, when the free space of the recording destination becomes low or insufficient, it is possible to select and delete the electrocardiographic examination data having the electrocardiogram waveform data having a low grade (for example, having a grade corresponding to no abnormality). As a result, only less important electrocardiographic examination data can be deleted.

In the initial display of the file list shown in FIG. 4A, the file list is displayed in the list area 402 in order from the top to the bottom with the latest measurement date and time. However, the grade may be used as the sort key for the initial display so that the ECG test data with the highest severity of the findings obtained by the automatic analysis process are displayed in order. By doing so, it is possible to identify the electrocardiogram data file to be confirmed at an early stage without the user having to instruct the sorting using the grade as the sort key.

Further, with respect to the electrocardiogram examination data in which a plurality of findings are obtained by the automatic analysis process, the information acquired in S203 includes a plurality of information (grades) regarding the severity of the findings. In this way, when a plurality of grades are included for one electrocardiogram examination data, the control unit 120 displays the grade corresponding to the highest severity among the plurality of grades in the file list. Also, when sorting by grade, the grade corresponding to the highest severity is used.

When sorting by grade, the order after sorting may be determined in consideration of the second and subsequent grades. For example, if there are two electrocardiographic data with a common grade (eg 8) corresponding to the highest severity, one electrocardiographic data is grade 8 if the number of grade 8 findings is greater than the other file. The sort order can be determined assuming that the electrocardiogram data with a large number of findings has a higher severity. Further, when the number of grade 8 findings is equal, the sort order can be determined assuming that the electrocardiogram examination data having a higher severity of other findings has a higher severity.

The biometric information processing device according to the present invention can also be realized as a program (application software) for causing a general-purpose information processing device such as a personal computer, a tablet terminal, or a smartphone to execute the above-mentioned operations. Therefore, such a program and a recording medium (an optical recording medium such as a CD-ROM or a DVD-ROM, a magnetic recording medium such as a magnetic disk, a semiconductor memory card, etc.) in which the program is stored also constitute the present invention. ..

100 ... electrocardiograph, 118 ... display unit, 120 ... control unit, 123 ... external I / F, 1201 ... analysis unit

Claims (10)

An acquisition method for acquiring information on a plurality of predetermined items from electrocardiogram examination data, and
Based on the above information, a display means for displaying a list display screen including a plurality of display items for each electrocardiogram examination data on the display device, and
It has a processing means for executing a predetermined process on the electrocardiogram examination data corresponding to the information selected on the list display screen.
The acquisition means acquires, as one of the information, information on the severity of the findings included in the automatic analysis result of the electrocardiogram waveform data.
The display means
The list display screen, which includes information on the severity of the findings in the plurality of display items and can be sorted by the information on the severity of the findings, is displayed .
For electrocardiographic examination data in which the information includes a plurality of information regarding the severity of the findings, the information regarding the highest severity is displayed on the list display screen.
An electrocardiogram information processing device characterized by this. The electrocardiogram information processing apparatus according to claim 1, wherein the display means displays the list display screen sorted by information on the severity of the findings as the initial display of the list display screen. Claim 1 or claim, wherein the display means displays the list display screen sorted so that the one with the highest severity of the findings is displayed first as the initial display of the list display screen. Item 2. The electrocardiogram information processing apparatus according to item 2. When the display means sorts electrocardiographic data in which the information includes a plurality of information on the severity of the findings by the information on the severity of the findings, the electrocardiographic data having the same severity of the findings has the highest severity. Any of claims 1 to 3 , wherein the electrocardiographic data having a large amount of information corresponding to the highest severity of the findings is sorted as electrocardiographic data having a higher severity of the findings. The electrocardiogram information processing apparatus according to item 1. The electrocardiogram information processing apparatus according to any one of claims 1 to 4, wherein the predetermined process is output of at least one of an electrocardiogram and an automatic analysis result. The electrocardiogram information processing apparatus according to any one of claims 1 to 4, wherein the predetermined process is deletion of electrocardiogram examination data. The method according to any one of claims 1 to 6, wherein the electrocardiogram examination data includes electrocardiogram waveform data, data of an automatic analysis result of the electrocardiogram waveform data, and data of subject information. Electrocardiogram information processing device. With electrocardiogram electrodes
An analysis means that applies automatic analysis processing to the electrocardiogram signal measured through the electrocardiogram electrode, and
A recording means for recording the electrocardiogram examination data including the data of the electrocardiogram signal and the data of the automatic analysis result by the analysis means, and a recording means.
The electrocardiogram information processing apparatus according to any one of claims 1 to 7, further comprising. It is a control method of the electrocardiogram information processing device.
An acquisition process that acquires information on multiple predetermined items from ECG data, and
Based on the above information, a display process for displaying a list display screen including a plurality of display items for each electrocardiogram examination data on the display device, and
It has a processing step of executing a predetermined process on the electrocardiogram examination data corresponding to the information selected on the list display screen.
In the acquisition step, as one of the information, information on the severity of the findings included in the automatic analysis result of the electrocardiogram examination data is acquired.
In the display process,
The list display screen, which includes information on the severity of the findings in the plurality of display items and can be sorted by the information on the severity of the findings, is displayed .
For electrocardiographic examination data in which the information includes a plurality of information regarding the severity of the findings, the information regarding the highest severity is displayed on the list display screen.
A control method for an electrocardiogram information processing device. A program for causing a computer to function as each means of the electrocardiogram information processing apparatus according to any one of claims 1 to 8.

Images