JP6080425B2 - ECG waveform output method and electrocardiograph - Google Patents

Description

  The present invention relates to an electrocardiogram waveform output method and an electrocardiograph.

  Conventionally, an electrocardiogram has been widely used as a diagnostic index for heart disease. An electrocardiogram is an electrocardiogram waveform which is detected by detecting the electrical activity of the heart on the body surface. By analyzing this electrocardiogram waveform (electrocardiogram), various information relating to the activity of the heart can be obtained.

  In recent years, it has become possible to automatically analyze an electrocardiogram using a computer by developing a digital electrocardiograph that records the electrocardiogram as data (see, for example, Patent Document 1).

JP 2006-116207 A

  By the way, in the electrocardiograph, there are restrictions on the screen size and paper size, so instead of displaying all the electrocardiogram waveforms on the screen or printing on recording paper, reduce the waveform in some sections, Display and printing are performed. For example, even in a standard 12-lead electrocardiogram (hereinafter simply referred to as “12-lead electrocardiogram”), only a part of the electrocardiogram waveform of a predetermined period used for analysis is displayed and printed. ing.

  Therefore, the user cannot confirm the state of the waveform that has been deleted and not displayed or printed. For example, even if there is noise on a waveform that has been deleted and not displayed or printed, the user often cannot confirm it.

  As a result, for example, even if the electrocardiograph detects a noise and judges that it is “recording failure” and displays this, the user cannot see the waveform with the noise and cannot even confirm its existence. Inconvenience can occur. In the case of “recording failure”, it is necessary to retake the 12-lead ECG later, which places a heavy burden on the user and the subject.

  The object of the present invention is to eliminate the lack of information on the electrocardiographic waveform to be provided to the user even when a plurality of ECG formations are displayed on the same screen by reducing the waveform of a part of the section or printed on the same recording paper. An electrocardiographic waveform output method and an electrocardiograph that can be suppressed.

One aspect of the ECG waveform output method of the present invention is:
Reduced waveform output step of reducing the waveform of a part of the limb induction waveform and chest induction waveform for a predetermined period and displaying on the same screen or printing on the same recording paper,
Non-reduced waveform output step of displaying the limb induction waveform and the chest induction waveform of the predetermined period on the same screen or printing on the same recording paper without reducing the waveform of the partial section,
Only including,
In the reduction waveform output step, the ratio between the area where the limb induction waveform is displayed or printed and the area where the chest induction waveform is displayed or printed is made variable .

One aspect of the electrocardiograph of the present invention is:
An electrocardiograph that displays a measured electrocardiogram waveform on a display unit and prints it on a recording sheet,
On the display unit or recording paper,
The limb induction waveform and the chest induction waveform for a predetermined period are displayed on the same screen or printed on the same recording paper by reducing the waveform of a part of the section, and the limb induction waveform and the chest induction waveform for the predetermined period Without reducing the waveform of the partial section, display on the same screen or print on the same recording paper , and display or print the region to display or print the limb induction waveform and the chest induction waveform The ratio to the area to be changed is variable .

  According to the present invention, even when a plurality of electrocardiogram formations are displayed on the same screen by reducing the waveform of a part of the section or printed on the same recording paper, the lack of information on the electrocardiographic waveform provided to the user is eliminated. It becomes possible to suppress.

The perspective view which shows the external appearance structure of the electrocardiograph of embodiment Block diagram showing the main components of the electrocardiograph Diagram showing continuous ECG waveform Diagram showing full waveform display The figure which shows a mode that the position of the division line was changed The figure which shows a mode that the position of the division line was changed

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

<Outline configuration>
FIG. 1 is a perspective view showing an external configuration of an electrocardiograph according to the present embodiment. The electrocardiograph 100 is composed of a main body part 110 and a display part 120. The main body unit 110 is provided with an input key 104 and a printer unit 105. The display unit 120 is provided with a touch panel 121.

  In the case of the present embodiment, the size of the touch panel 121 is 15 inches. The size of 15 inches is roughly equivalent to the A4 paper size. Thereby, in the electrocardiograph 100 of the present embodiment, an electrocardiographic waveform having the same layout and size as those recorded on A4 size paper can be viewed on the touch panel 121.

  FIG. 2 is a block diagram showing a main configuration of the electrocardiograph 100. As shown in FIG. The main unit 110 includes a calculation unit 101, a measurement unit 102, a storage unit 103, an input key 104, a printer unit 105, and a display / print control unit 106.

  The calculation unit 101 executes the electrocardiogram data processing program to perform formation of an electrocardiogram waveform, analysis of the electrocardiogram waveform and the like. In addition, the calculation unit 101 performs execution start, execution stop and execution condition (threshold value, etc.) setting of the electrocardiogram data processing program, various measurement device controls such as the measurement unit 102, various peripheral device control such as the touch panel 121 and the printer unit 105 Follow the input command.

  The measurement unit 102 is connected to an electrode unit worn by a subject (that is, an electrocardiogram measurement subject), performs an amplification process on the measurement voltage input from the electrode unit, and performs measurement after the process. The voltage is output to the calculation unit 101. Incidentally, the electrode unit for limbs and the electrode unit for chest are usually connected to the measurement unit 102, and a voltage necessary for obtaining a 12-lead electrocardiogram is input.

  The storage unit 103 is configured by a hard disk drive, a semiconductor memory, or the like. The storage unit 103 stores electrocardiographic waveform data obtained by the calculation unit 101 and analysis data thereof. The storage unit 103 also stores measurement data output from the measurement unit 102.

  Furthermore, setting data of the electrocardiograph 100 input by the user from the touch panel 121 or the input key 104 is also stored in the storage unit 103. The electrocardiograph 100 operates based on setting data stored in the storage unit 103.

  A menu screen and various setting screens are displayed on the touch panel 121, and the user can perform menu selection and various settings by touching the touch panel 121. The touch panel 121 displays an electrocardiogram waveform obtained by the calculation unit 101, an analysis result, and the like.

  The printer unit 105 is a laser type or thermal head type printer, and prints an electrocardiogram waveform obtained by the calculation unit 101, an analysis result, and the like according to an instruction from the user.

  The display / print control unit 106 controls the layout of the electrocardiographic waveform displayed on the screen of the touch panel 121 and printed on the recording paper by the printer unit 105. That is, the display / printing control of the electrocardiographic waveform described below is mainly performed by the display / printing control unit 106.

<Display and print ECG waveform>
Next, display and printing of an electrocardiographic waveform in the electrocardiograph 100 of the present embodiment will be described. Here, a case where an electrocardiographic waveform of a 12-lead test is displayed on a 15-inch touch panel 121 and printed on an A4 size recording sheet will be described as an example.

  FIG. 3 shows a continuous electrocardiographic waveform displayed and printed by the electrocardiograph 100 of the present embodiment. In the continuous ECG waveform shown in FIG. 3, among the 12-lead ECG waveforms, the limb lead waveforms I, II, III, aVR, aVL, aVF are arranged on the left side, and the chest lead waveforms V1, V2, V3 , V4, V5, V6 are arranged on the right side. This is a contrivance conventionally used to display the 12-lead waveform collectively on one screen and print it on one sheet of recording paper while maintaining the amplitude of the waveform.

  In the first place, a standard electrocardiogram is displayed and printed with a sweep speed of 25 mm / sec and an amplitude of 10 mm / mV. This waveform size is a standard size used when diagnosing a waveform abnormality (abnormality of the shape of one beat of waveform) or an arrhythmia (abnormality such as an interval for each one beat of waveform).

  The size of the printed paper is approximately the same as or smaller than the size of the medical record (A4 size), and it is realistic that the number of printed reports is also several pages. The 12-lead ECG waveform report (records of several ECG waveforms) requires 6 limb leads and 6 chest leads, taking into account the size of the waveform and the size of the paper. Are recorded on the left side and the limb lead 6 waveform is printed on the right side.

  More specifically, in the continuous method, among the electrocardiogram waveforms for 10 seconds, the limb lead waveform for 0 to 5 seconds in the first half is displayed and printed on the left side, and the chest lead waveform for 5 to 10 seconds in the second half that follows. Is displayed and printed on the right side. Thus, in the continuous method, the limb induction waveform and the chest induction waveform for a predetermined period (for example, 10 seconds) are reduced, and the waveform of a part of the interval (for example, the first half for 5 seconds or the second half for 5 seconds) is reduced. They are displayed on the same screen or printed on the same recording paper.

  Here, in the continuous method, the first 5 seconds are limb guidance and the second 5 seconds are chest guidance. Even if the guidance is switched to A4 size recording paper, the total number of seconds (10 This is because it is necessary to record as much as possible a second) waveform.

  Incidentally, there is a method called a coherent method as another method for reducing and displaying the waveform of a part of the electrocardiographic waveform. In the coherent method, among the 10-second waveforms, the limb induction waveform of 0 to 5 seconds in the first half is displayed and printed on the left side, and the chest induction waveform of 0 to 5 seconds in the first half is displayed and printed on the right side. Yes.

  The continuous method and the coherent method have a 12-lead waveform so that a user (doctor) can easily diagnose without reducing the amplitude of the waveform on one screen and one recording sheet of a limited size as much as possible. The ECG waveform is arranged so that it can be displayed and printed in a lump, and is a display / recording method that has been widely used.

  However, as described above, in these methods, the waveforms in some sections are reduced. For this reason, it is impossible to confirm the state of the deleted waveform that has not been displayed or printed. For example, even if there is noise on a waveform that has been deleted and not displayed or printed, the user often cannot confirm it. As a result, for example, even if the electrocardiograph detects a noise and judges that it is “recording failure” and displays this, the user cannot see the waveform with the noise and cannot even confirm its existence. Inconvenience can occur. In the case of “recording failure”, it is necessary to retake the 12-lead ECG later, which places a heavy burden on the user and the subject.

  Therefore, in the present embodiment, as shown in FIG. 4, the waveform of a part of the section reduced by the continuous method (or the coherent method) is not displayed on the screen different from FIG. All waveforms within a period (for example, 10 seconds) are displayed. Incidentally, in the example of FIG. 4, a waveform for 20 seconds is displayed, but a waveform for 10 seconds may be displayed. In short, if the ECG waveform including the waveform reduced by the continuous method or the coherent method is output on a screen / paper that is displayed / printed by the continuous method or the coherent method, Good.

  In the example of FIG. 4, in order to display the entire waveform (20 seconds), the amplitude of the waveform is reduced, and the sweep speed is 12.5 mm / sec. Although the visibility of the waveform shape for each beat is inferior, it is possible to confirm the presence or absence of a waveform with noise.

  By doing in this way, omission of the information on the electrocardiographic waveform provided to the user can be suppressed, and the user can acquire more detailed information on the electrocardiographic waveform as necessary.

  In addition, in the present embodiment, the ratio of the area for displaying or printing the limb induction waveform and the area for displaying or printing the chest induction waveform can be changed. Specifically, as shown in FIGS. 3, 5, and 6, the division line 130 is displayed at a position where the limb guidance waveform and the chest guidance waveform are divided, and by changing the position of the division line 130, The ratio between the limb lead waveform and the chest lead waveform is changed. The position of the dividing line 130 may be moved by, for example, the user dragging the dividing line 130 with a finger on the touch panel 121.

  FIG. 3 shows an example in which the limb lead waveform and the chest lead waveform are displayed at an equal ratio. FIG. 5 shows an example in which the ratio of the limb induction waveform is displayed larger than the ratio of the chest induction waveform. FIG. 6 shows an example in which the ratio of the limb induction waveform is displayed smaller than the ratio of the chest induction waveform.

  In this way, if the display ratio is increased, waveforms that were originally reduced and not displayed can be displayed, so that the user can acquire more detailed information on the electrocardiographic waveform as necessary. It becomes like this.

  As described above, according to the present embodiment, in addition to reducing and displaying the waveform of a part of the section, the display screen and / or the recording screen is different from the display screen and / or the recording paper. By displaying and / or printing on paper without reducing the waveform of the partial section, a plurality of cardiac radio wave formations can be displayed on the same screen by reducing the waveform of the partial section. Even when printing on the recording paper, it is possible to suppress the lack of information on the electrocardiographic waveform provided to the user.

  For example, the user looks at an electrocardiogram waveform in which the waveform is not reduced as shown in FIG. 4 to check whether or not noise is present. If an operation is performed so as not to print a waveform report in which some of the waveforms are reduced, unnecessary printing can be avoided. In addition, it is understood on the spot that the electrocardiogram waveform needs to be retaken, and it is possible to respond quickly.

  In the above-described embodiment, the touch panel 121 is used. However, the present invention is not limited to this, and the display unit and the input unit may be configured separately. For example, an image as in the above-described embodiment may be displayed on the display unit, and the position of the dividing line 130 may be moved using a mouse cursor.

  The embodiment of the present invention has been described above. The above description is an illustration of a preferred embodiment of the present invention, and the scope of the present invention is not limited to this. That is, the configuration and operation of the apparatus described in the above embodiment are examples, and it is obvious that these can be partially changed, added, and deleted within the scope of the present invention.

DESCRIPTION OF SYMBOLS 100 ECG 101 Calculation part 102 Measurement part 103 Storage part 104 Input key 105 Printer part 106 Display / printing control part 110 Main part 120 Display part 121 Touch panel 130 Dividing line

Claims (4)

Reduced waveform output step of reducing the waveform of a part of the limb induction waveform and chest induction waveform for a predetermined period and displaying on the same screen or printing on the same recording paper,
Non-reduced waveform output step of displaying the limb induction waveform and the chest induction waveform of the predetermined period on the same screen or printing on the same recording paper without reducing the waveform of the partial section,
Only including,
In the reduced waveform output step, the ratio of the area for displaying or printing the limb induction waveform and the area for displaying or printing the chest induction waveform is variable.
ECG waveform output method. Performing the non-reduced waveform output step;
Only when the printing is instructed by the user, the reduced waveform output step prints the limb induction waveform and the chest induction waveform for a predetermined period on the same recording paper by reducing the waveform of a part of the section.
The electrocardiographic waveform output method according to claim 1 . In the reduced waveform output step, the limb induction waveform and the chest induction waveform of the predetermined period are displayed on the same screen or the same recording paper by reducing the waveform of a part of the period, in the continuous method or the coherent method. To print,
The electrocardiographic waveform output method according to claim 1 or 2 . An electrocardiograph that displays a measured electrocardiogram waveform on a display unit and prints it on a recording sheet,
On the display unit or recording paper,
The limb induction waveform and the chest induction waveform for a predetermined period are displayed on the same screen or printed on the same recording paper by reducing the waveform of a part of the section, and the limb induction waveform and the chest induction waveform for the predetermined period Without reducing the waveform of the partial section, display on the same screen or print on the same recording paper , and display or print the region to display or print the limb induction waveform and the chest induction waveform The ratio to the area to be changed is variable,
Electrocardiograph.