JP7274969B2 - Electrocardiograph and electrocardiograph operating method - Google Patents

Description

The present invention relates to electrocardiographs and methods of operating electrocardiographs.

Conventionally, an electrocardiogram has been widely used as a diagnostic index for heart disease. An electrocardiogram is obtained by detecting the electrical activity of the heart on the body surface and representing it as an electrocardiographic waveform. By analyzing this electrocardiographic waveform (electrocardiogram), it is possible to obtain a variety of information about heart activity.

In recent years, the development of digital electrocardiograms that record electrocardiograms as data has made it possible to automatically analyze electrocardiograms using a computer, and various parameters obtained from electrocardiograms have been studied (e.g., patent literature 1).

Also, some electrocardiographs can perform multiple tests (eg, 12-lead test, arrhythmia test, rhythm measurement test, master test, etc.).

Japanese Patent Application Laid-Open No. 2006-116207

By the way, an electrocardiograph capable of performing a plurality of examinations such as a 12-lead examination, an arrhythmia examination, a rhythm measurement examination, and a master examination is used, for example, in hospitals. In this case, the electrocardiograph sequentially performs electrocardiogram examinations according to order information from a hospital host system such as HIS (Hospital Information System).

However, in conventional electrocardiographs, efficient processing procedures for performing the above multiple examinations have not been sufficiently studied. Therefore, there is a drawback that the total time of the electrocardiogram examination becomes long. This is a burden for the patient who must keep the ECG electrodes on their body during the examination. In addition, it can be a big disadvantage in large hospitals and the like where examinations are required for a large number of patients.

SUMMARY OF THE INVENTION It is an object of the present invention to shorten the examination time in an electrocardiograph capable of performing a plurality of examinations.

One aspect of the electrocardiograph of the present invention is
a receiving unit for receiving order information from a host system;
an electrocardiogram data acquisition unit that acquires electrocardiogram data of a patient;
a data storage unit that stores the electrocardiogram data;
an analysis unit that analyzes the electrocardiogram data;
with
The data storage unit stores an interval related to the second type of electrocardiogram included in the order information at least while the analysis unit is performing analysis processing corresponding to the first type of electrocardiogram included in the order information. collect and store ECG data from
After performing the analysis processing corresponding to the first type of electrocardiogram examination, the analysis unit uses the electrocardiogram data of the section related to the second type of electrocardiogram examination stored in the data storage unit to perform the first type of electrocardiogram examination. Analysis processing corresponding to two types of electrocardiogram examination is performed.

One aspect of the electrocardiograph operating method of the present invention includes:
a step of receiving order information from a higher system;
obtaining patient electrocardiogram data;
storing the electrocardiogram data;
analyzing the electrocardiogram data;
including
In the step of storing the electrocardiogram data, at least while analysis processing corresponding to the first type of electrocardiogram examination included in the order information is being performed, the section relating to the second type of electrocardiogram examination included in the order information is analyzed. collect and store ECG data,
In the step of analyzing the electrocardiogram data, after performing the analysis processing corresponding to the electrocardiogram examination of the first type, the electrocardiogram data of the saved section related to the electrocardiogram examination of the second type is used to analyze the electrocardiogram data of the second type. Analysis processing corresponding to the electrocardiogram examination is performed.

According to the present invention, in an electrocardiograph capable of performing multiple examinations, the examination time can be shortened without complicating the user's operation.

Schematic diagram showing the system configuration and data flow including an electrocardiograph in a hospital Flowchart showing a first comparative example of a conventional electrocardiograph processing flow A diagram showing an example of 12-lead waveforms collected in the first comparative example A diagram showing analysis results of a 12-lead test in the first comparative example A diagram showing a display example of an order list in the first comparative example A diagram showing an example of an arrhythmia waveform collected in the first comparative example FIG. 11 is a diagram showing analysis results of an arrhythmia test in the first comparative example; A diagram showing an example of a display image when an order is completed in the first comparative example. Flowchart showing a second comparative example of the flow of conventional electrocardiograph processing A diagram showing an example of 12-lead waveforms collected in the second comparative example A diagram showing an example of a freeze screen in the second comparative example A diagram showing an example of a freeze screen in the second comparative example A diagram showing analysis results of a 12-lead test in the second comparative example FIG. 10 is a diagram showing analysis results of an arrhythmia test in a second comparative example; A diagram showing an example of a display image when an order is completed in the second comparative example. 1 is a block diagram showing the configuration of an electrocardiograph according to an embodiment; FIG. Flowchart for explaining the operation of the electrocardiograph according to the embodiment FIG. 4 is a diagram showing an example of 12-lead waveforms collected in the embodiment; FIG. 4 shows an example of a freeze screen according to the embodiment; The figure which shows the analysis result of the 12 lead inspection in embodiment. FIG. 10 is a diagram showing a display example of an order list according to the embodiment; FIG. 4 is a diagram showing an example of insufficient arrhythmia waveforms collected in the embodiment; FIG. 4 shows an example of a freeze screen according to the embodiment; FIG. 11 is a diagram showing analysis results of an arrhythmia test in the embodiment; A diagram showing an example of a display image when an order is completed according to the embodiment.

<1> Circumstances leading to the present invention First, before describing the embodiments, the circumstances leading to the present invention will be described.

FIG. 1 is a schematic diagram showing the configuration of a hospital system including an electrocardiograph 1 and the flow of data. The in-hospital system of FIG. 1 has an electrocardiograph 1, a data management system 2, and a host system 3.

The electrocardiograph 1 has a configuration capable of executing a plurality of tests such as a 12-lead test, an arrhythmia test, a rhythm measurement test, and a master test. The data management system 2 has a function of storing measurement data of medical measuring instruments including the electrocardiograph 1 installed in the physiological examination room, and a function of converting data between the host system 3 and each medical measuring instrument. have. The host system 3 is HIS, for example.

When the host system 3 issues order information, the data management system 2 converts the order information into order information for an electrocardiograph and sends it to the electrocardiograph 1 . The electrocardiograph 1 performs electrocardiography according to the order information. The electrocardiograph 1 sends examination data obtained by the electrocardiogram examination and an order completion notification to the data management system 2 . The data management system 2 stores inspection data and sends an order completion notification to the host system 3 .

FIG. 2 is a flow chart showing a first comparative example of the conventional process flow of the electrocardiograph 1 . 3A to 3F are diagrams showing examples of images displayed on the electrocardiograph 1. FIG.

First, an order list is displayed in step S11. The order information in this example instructs execution of a 12-lead test and an arrhythmia test. By viewing the order list, the medical staff who is the user of the electrocardiograph 1 can grasp the examination to be performed from now on and confirm the instructions from the doctor based on the comments included in the order.

Next, in step S12, the electrocardiograph 1 switches the examination mode to the 12-lead examination and acquires waveforms. Here, the electrocardiograph 1 acquires waveforms for 10 seconds as waveforms required for the 12-lead examination. FIG. 3A shows an example of a 12-lead waveform that is acquired.

Next, in step S13, the electrocardiograph 1 uses the collected waveforms to perform analysis processing corresponding to the 12-lead examination. The analysis result is displayed on the display section of the electrocardiograph 1 . FIG. 3B shows the analysis results of the 12-lead test. The user confirms the displayed analysis result. The electrocardiograph 1 sends the analysis result to the data management system 2 (data transmission).

Next, in step S14, the electrocardiograph 1 displays an order list. FIG. 3C is a display example of the order list. By viewing this order list, the user recognizes that the next examination is an arrhythmia examination. It also confirms the doctor's instructions based on the comments included in the order.

Next, in step S15, the electrocardiograph 1 switches the examination mode to an arrhythmia examination and acquires waveforms. Here, the electrocardiograph 1 acquires waveforms for 180 seconds as waveforms necessary for arrhythmia examination. FIG. 3D shows an example of an acquired arrhythmia waveform.

Next, in step S16, the electrocardiograph 1 uses the collected waveform to perform analysis processing corresponding to an arrhythmia test. The analysis result is displayed on the display section of the electrocardiograph 1 . FIG. 3E shows the analysis results of the arrhythmia test. The user confirms the displayed analysis result. The electrocardiograph 1 sends the analysis result to the data management system 2 (data transmission).

Next, in step S17, the electrocardiograph 1 sends an order completion notice and ends the order. FIG. 3F shows an example of the display image of the electrocardiograph 1 when the order is completed.

FIG. 4 is a flow chart showing a second example of the conventional process flow of the electrocardiograph 1 . 5A to 5F are diagrams showing examples of images displayed on the electrocardiograph 1. FIG.

First, an order list is displayed in step S21. The order information in this example instructs execution of a 12-lead test and an arrhythmia test. By viewing the order list, the medical staff who is the user of the electrocardiograph 1 can grasp the examination to be performed from now on and confirm the instructions from the doctor based on the comments included in the order.

Next, in step S22, the electrocardiograph 1 switches to the examination mode and collects waveforms. In this second comparative example, the electrocardiograph 1 acquires waveforms necessary for 12-lead examination and arrhythmia examination at once. In other words, the waveform required for the 12-lead test is a 10-second waveform, whereas the waveform required for the arrhythmia test is a 180-second waveform, so acquisition in step S22 requires at least 180 seconds. . By the way, although it depends on the order from the host system 3, in general, the waveform required for 12-lead examination is in the range of 8 seconds to 24 seconds, and the waveform required for arrhythmia examination is in the range of 40 seconds to 180 seconds. The waveforms required for rhythmometric testing range from 40 seconds to 10 minutes. FIG. 5A shows an example of an acquired waveform.

Next, in step S23, the electrocardiograph 1 transitions to the freeze screen. The transition to this freeze screen is triggered by a user operation. 5B and 5C show example freeze screens for a 12-lead test. First, the user sets the analysis range of the 12-lead test and the analysis range of the arrhythmia test on the freeze screen shown in FIG. 5B. When the user sets the analysis range and operates the "analysis mode" ("analysis mode" here means the type of examination to be analyzed) button, a check box as shown in FIG. 5C is displayed. be done. Next, the user checks the examinations described in the order list from among the examinations in the check boxes, operates the return button, and operates the "analyze" button to analyze the checked examinations. In this example, the user checks the items of the 12-lead test and the arrhythmia test, operates the return button, and operates the "analyze" button to perform analysis of the 12-lead test and the arrhythmia test. Become.

The electrocardiograph 1 moves to step S24 and changes the mode from the freeze mode to the analysis mode (the "analysis mode" here means the mode in which the electrocardiograph 1 performs analysis processing).

In this way, the electrocardiograph 1 sets the analysis range for each examination in step S23, and when the mode transition to the analysis mode is instructed in step S24, the process proceeds to step S25. In step S25, the electrocardiograph 1 executes analysis processing corresponding to the 12-lead test and the arrhythmia test using the waveform within the set analysis range. The analysis result is displayed on the display section of the electrocardiograph 1 . FIG. 5D shows the analysis results of the 12-lead test, and FIG. 5E shows the analysis results of the arrhythmia test. The user confirms the displayed analysis result. The electrocardiograph 1 sends the analysis result to the data management system 2 (data transmission). That is, in the first comparative example shown in FIG. 2, the analysis, confirmation, and data transmission of the 12-lead test and the analysis, confirmation, and data transmission of the arrhythmia test were performed separately in steps S13 and S15. 4, the analysis, confirmation, and data transmission of the 12-lead test and the analysis, confirmation, and data transmission of the arrhythmia test are collectively performed in step S25.

Next, in step S26, the electrocardiograph 1 sends an order completion notice and ends the order. FIG. 5F shows an example of the display image of the electrocardiograph 1 when the order is completed.

Here, in the first comparative example shown in FIG. 2, the waveform acquisition for the 12-lead test (step S12) and the waveform acquisition for the arrhythmia test (step S15) are performed separately, so the time required for waveform acquisition increases. . For example, in the example of FIG. 2, it takes 10 seconds to acquire the waveform for the 12-lead test and 180 seconds to acquire the waveform for the arrhythmia test, so the total waveform acquisition time is 190 seconds. As described above, the time required for waveform acquisition for a 12-lead test is 24 seconds at maximum depending on the order, so in this case, the total waveform acquisition time is 24+180=204 seconds.

On the other hand, in the second comparative example shown in FIG. 4, waveform acquisition of a plurality of tests (12-lead test, arrhythmia test) is collectively performed in step S22. can reduce the time required for However, in the second comparative example shown in FIG. 4, in steps S23 and S24, the user sets the analysis range for a plurality of examinations while confirming a plurality of order information, and in step S25, the user It is necessary to perform analysis settings for multiple inspections while confirming multiple orders. Therefore, in the second comparative example shown in FIG. 4, compared with the first comparative example shown in FIG. is required.

The inventors of the present invention arrived at the present invention based on the above considerations.

<2> Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that "electrocardiogram" in the following description may be read as "electrocardiographic waveform".

FIG. 6 is a block diagram showing the basic configuration of the electrocardiograph according to the embodiment of the invention. The electrocardiograph 10 of this embodiment is used as the electrocardiograph 1 in the system of FIG.

The electrocardiograph 10 has an electrocardiogram data acquisition unit 11 , an analysis unit 12 , a display unit 13 , an operation input unit 14 , a control unit 15 , a transmission/reception unit 16 and a data storage unit 17 .

The electrocardiogram data acquisition unit 11 includes an amplifier circuit and an analog/digital circuit for amplifying electrocardiogram signals from the plurality of electrocardiogram electrodes 21 attached to the patient, and outputs the patient's electrocardiogram data.

The analysis unit 12 analyzes electrocardiogram data. The analysis unit 12 performs different analyzes depending on the type of examination, such as a 12-lead examination and an arrhythmia examination. Since the analysis of each inspection by the analysis unit 12 is a known technique, detailed description thereof will be omitted here. Analysis results obtained by the analysis unit 12 are displayed on the display unit 13 . Also, the analysis result is sent to the data management system 2 (FIG. 1) via the transmission/reception unit 16 .

The display unit 13 is, for example, a liquid crystal display. The operation input unit 14 receives user operations. When the display unit 13 is a liquid crystal display with a touch panel, the operation input unit 14 receives a touch operation of the touch panel by the user. In addition, when a keyboard and a mouse are connected to the electrocardiograph 10, the operation input unit 14 receives these device operations by the user.

The control unit 15 controls the operation of the electrocardiograph 10 based on operation signals output from the operation input unit 14 . Order information is input to the control unit 15 via the transmission/reception unit 16, and the control unit 15 controls the operation of the electrocardiograph 10 based on this order information. Specifically, the order information is displayed on the display unit 13, and the analysis unit 12, the data storage unit 17, and the like are controlled based on the order information. The order information is issued by the host system 3 (FIG. 1) such as HIS as described above.

The data storage unit 17 stores the electrocardiogram data acquired by the electrocardiogram data acquisition unit 11 . The electrocardiogram data stored in the data storage unit 17 is used for analysis by the analysis unit 12 .

FIG. 7 is a flow chart showing the flow of processing of the electrocardiograph 10 of this embodiment. 8A to 8H are diagrams showing examples of images displayed on the electrocardiograph 10. FIG.

First, an order list is displayed on the display unit 13 in step S31. The order information in this example instructs execution of a 12-lead test and an arrhythmia test. By viewing the order list, the medical staff who is the user of the electrocardiograph 10 can grasp the examination to be performed from now on and confirm the instructions from the doctor based on the comments included in the order.

Next, in step S32, the electrocardiograph 10 switches the examination mode to 12-lead examination based on the order information, and collects electrocardiogram data. Here, the electrocardiograph 10 collects electrocardiogram data for 10 seconds as a waveform required for 12-lead examination. This electrocardiogram data may be stored in the memory of the analysis unit 12 or may be recorded in the data storage unit 17 . FIG. 8A shows an example of a 12-lead waveform that is acquired.

Next, in step S33, the electrocardiograph 10 transitions to the freeze screen. The transition to this freeze screen is triggered by a user operation. FIG. 8B shows an example of a freeze screen. The user sets the analysis range for the 12-lead test on the freeze screen shown in FIG. 8B.

Next, in step S34, the electrocardiograph 10 uses the electrocardiogram data within the set analysis range to perform analysis processing corresponding to the 12-lead examination. Analysis results are displayed on the display unit 13 . FIG. 8C shows the analysis results of the 12-lead test. The user confirms the displayed analysis result. Also, the electrocardiograph 10 sends the analysis result to the data management system 2 (FIG. 1) via the transmission/reception unit 16 (data transmission).

Next, in step S35, the electrocardiograph 10 displays an order list. FIG. 8D is a display example of an order list. By viewing this order list, the user recognizes that the next examination is an arrhythmia examination. It also confirms the doctor's instructions based on the comments included in the order.

The electrocardiograph 10 of the present embodiment executes step S40 in parallel with steps S32 to S35, thereby saving electrocardiogram data in the data storage unit 17 while performing the processing of steps S32 to S35. (waveform storage). That is, if the processing time of steps S32 to S35 is 150 seconds, the data storage unit 17 stores electrocardiogram data for a period of 150 seconds. In other words, the electrocardiograph 10 saves the electrocardiogram data in the background while performing the processes of steps S32 to S35.

Next, in step S36, the electrocardiograph 10 switches the examination mode to an arrhythmia examination and collects electrocardiogram data. This collection of electrocardiogram data is performed to make up for the shortage of the electrocardiogram data saved in step S40. In other words, if the electrocardiogram data can be saved without shortage in step S40, there is no need to collect it here. For example, if the electrocardiogram data required for the arrhythmia examination specified in the order information is data for 180 seconds and the data for 150 seconds can be saved in step S40, the data for the missing 30 seconds is stored in step S36. collect. FIG. 8E shows an example of an acquired missing arrhythmia waveform.

Next, in step S37, the electrocardiograph 10 transitions to the freeze screen. The transition to this freeze screen is triggered by a user operation. FIG. 8F shows an example of a freeze screen. In this freeze screen, the electrocardiogram data saved in step S40 and the insufficient electrocardiogram data collected in step S36 are combined and displayed. The user sets the analysis range of the arrhythmia examination on the freeze screen shown in FIG. 8F.

Next, in step S38, the electrocardiograph 10 executes analysis processing corresponding to the arrhythmia examination using the electrocardiogram data within the set analysis range. Analysis results are displayed on the display unit 13 . FIG. 8G shows the analysis results of the arrhythmia test. The user confirms the displayed analysis result. Also, the electrocardiograph 10 sends the analysis result to the data management system 2 (FIG. 1) via the transmission/reception unit 16 (data transmission).

Next, in step S39, the electrocardiograph 10 sends an order completion notification from the transmitting/receiving section 16 to the data management system 2, and ends the order. FIG. 8H shows a display image example of the electrocardiograph 10 when the order is completed.

Comparing the processing of the electrocardiograph 10 of the present embodiment with the processing shown in FIG. 2, in the processing of FIG. 180 seconds worth of electrocardiogram data must be newly collected, but the electrocardiograph 10 of the present embodiment stores the electrocardiogram data for the arrhythmia examination while collecting and analyzing 12 leads. Therefore, the total inspection time can be shortened. That is, in the processing of this embodiment, the time of step S15 in FIG. 2 can be shortened.

In large hospitals and the like, there are a large number of patients, and there is a demand to shorten the time required for examination per person as much as possible. For example, one electrocardiograph may be required to examine about 50 patients per day. In such a case, the electrocardiograph 10 of the present embodiment is very effective because it can shorten the examination time per person. Moreover, since the examination time is shortened, the burden on the patient to whom the electrocardiogram electrodes 21 are attached can be reduced.

Further, comparing the processing of the electrocardiograph 10 of the present embodiment with the processing shown in FIG. 4, in the processing of FIG. In step S25, it is necessary for the user to set the analysis range for a plurality of examinations while confirming a plurality of orders. In contrast, in the processing of the electrocardiograph 10 of the present embodiment shown in FIG. 7, the user checks the order information for each examination and sets the analysis range and analysis settings for each examination. In other words, after the setting and analysis of one examination are completed, the setting and analysis of the next examination can be performed. become able to.

Actually, the processing shown in FIG. 4 requires a shorter time for collecting electrocardiogram data than the processing shown in FIG. Since operation and judgment are required, it was difficult to operate outside of specialized hospitals where skilled technicians are available. On the other hand, since the electrocardiograph 10 of the present embodiment is easy to operate, it can be operated in a medical institution where there are no skilled technicians.

As described above, the electrocardiograph 10 of the present embodiment includes a receiving unit (transmitting/receiving unit 16) that receives order information from the host system 3, an electrocardiogram data acquisition unit 11 that acquires electrocardiogram data of a patient, It has a data storage unit 17 that stores electrocardiogram data and an analysis unit 12 that analyzes the electrocardiogram data, and the data storage unit 17 stores at least the analysis unit 12 for a first type of electrocardiogram examination (for example, 12-lead test), the analysis unit 12 collects and saves the electrocardiogram data of the section related to the second type of electrocardiogram test (for example, arrhythmia test) included in the order information, After performing analysis processing corresponding to one type of electrocardiogram examination, the second type of electrocardiogram examination is performed using the electrocardiogram data of the section related to the second type of electrocardiogram examination stored in the data storage unit 17. Perform analysis processing.

As a result, in an electrocardiograph capable of performing a plurality of types of examinations, the examination time can be shortened without complicating the user's operation.

The above-described embodiments are merely examples of specific implementations of the present invention, and the technical scope of the present invention should not be construed to be limited by these. That is, the present invention can be embodied in various forms without departing from its spirit or essential characteristics.

In the above-described embodiment, as shown in FIG. 7, the case where the electrocardiogram data during the process of steps S32 to S35 is saved in the data storage unit 17 has been described. In short, the data storage unit 17 performs analysis processing corresponding to at least the first type of electrocardiogram examination that the analysis unit 12 includes in the order information. During the period (that is, at least during step S34), the electrocardiogram data of the section related to the second type of electrocardiogram included in the order information may be collected and stored.

Further, in the above-described embodiment, mainly the case of executing the 12-lead test and the arrhythmia test was described, but the above-described execution can also be performed when the order information includes the rhythm measurement test, the master test, and the load test. can be implemented in the same manner as in the form of

INDUSTRIAL APPLICABILITY The present invention is widely applicable to electrocardiographs that perform electrocardiogram examinations based on order information from a host system.

Reference Signs List 1, 10 electrocardiograph 2 data management system 3 host system 11 electrocardiogram data acquisition unit 12 analysis unit 13 display unit 14 operation input unit 15 control unit 16 transmission/reception unit 17 data storage unit

Claims (4)

a receiving unit for receiving order information from a host system;
an electrocardiogram data acquisition unit that acquires electrocardiogram data of a patient;
a data storage unit that stores the electrocardiogram data;
an analysis unit that analyzes the electrocardiogram data;
with
The data storage unit stores an interval related to the second type of electrocardiogram included in the order information at least while the analysis unit is performing analysis processing corresponding to the first type of electrocardiogram included in the order information. collect and store ECG data from
After performing the analysis processing corresponding to the first type of electrocardiogram examination, the analysis unit uses the electrocardiogram data of the section related to the second type of electrocardiogram examination stored in the data storage unit to perform the first type of electrocardiogram examination. Perform analysis processing corresponding to two types of electrocardiogram examination,
Electrocardiograph. The second type of electrocardiography is an electrocardiography that requires a longer time to collect electrocardiogram data for analysis than the first type of electrocardiography.
The electrocardiograph according to claim 1. the first type of electrocardiography is a 12-lead examination;
The electrocardiograph according to claim 1 or 2. a step of receiving order information from a higher system;
obtaining patient electrocardiogram data;
storing the electrocardiogram data;
analyzing the electrocardiogram data;
including
In the step of storing the electrocardiogram data, at least while analysis processing corresponding to the first type of electrocardiogram examination included in the order information is being performed, the section relating to the second type of electrocardiogram examination included in the order information is analyzed. collect and store ECG data,
In the step of analyzing the electrocardiogram data, after performing the analysis processing corresponding to the electrocardiogram examination of the first type, the electrocardiogram data of the saved section related to the electrocardiogram examination of the second type is used to analyze the electrocardiogram data of the second type. Perform analysis processing corresponding to the electrocardiogram examination of
How an electrocardiograph works.

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