JP2009247812A - Electrocardiogram-displaying method and electrocardiogram display unit - Google Patents
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- 230000036982 action potential Effects 0.000 claims abstract 8
- 230000002107 myocardial effect Effects 0.000 claims description 43
- 210000004165 myocardium Anatomy 0.000 claims 1
- 230000005856 abnormality Effects 0.000 abstract description 14
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 230000004044 response Effects 0.000 abstract description 3
- 230000000747 cardiac effect Effects 0.000 abstract 7
- 230000004706 cardiovascular dysfunction Effects 0.000 abstract 1
- 230000008569 process Effects 0.000 description 7
- 230000009084 cardiovascular function Effects 0.000 description 4
- 238000012790 confirmation Methods 0.000 description 4
- 238000012937 correction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004217 heart function Effects 0.000 description 1
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Abstract
Description
本発明は、心電図の表示方法および心電図表示装置に関する。更に詳しくは、本発明は、心電図の異常を瞬時に把握できるようにすると共に、その異常がどの様な心血管機能の異常に起因するものかを素早く判断することができるように表示する方法およびその装置に関する。 The present invention relates to an electrocardiogram display method and an electrocardiogram display device. More specifically, the present invention makes it possible to instantly grasp an abnormality of an electrocardiogram and to display so that it can be quickly determined what kind of abnormality of the cardiovascular function is caused by the abnormality. It relates to the device.
ホルター心電図は、通常の日常生活にあるがままの状況下で、１拍毎の心電図を長時間連続して記録することにより心機能を評価する検査法であり、現在は、生活習慣病に映る心血管機能の異常を精確かつ忠実に抽出する手法として発展しつつある。
従来、ホルター心電図では、一般的には、全く普通の日常生活下において、その心電図を２４時間連続して記録し、それを短時間のうちにスキャナー上に再生・解析し、記録中の行動と心電図変化を対比させていた。
しかしながら、このようなアナログ方式では、（１）周波数特性の改善に限界があり、ＳＴ変化やＱＴ感覚の評価が正しく行えない、（２）繰り返し使用するとテープやヘッドに汚れが生じたり磁化が生じたりする、（３）モータに回転むらが生じたり、テープの巻き込みが生じることがある、（４）小型化に限界がある、（５）再生時にデータをデジタル変換してハードディスクに落とす必要があるため、解析に時間がかかる、などの問題があり、最近はデジタル方式に変わりつつある。そして、周波数特性の著しい改善により、デジタル方式によって記録されるＳＴ−Ｔ変化が普通心電図のそれとほぼ同じになり、ＱＴ間隔計測の信頼性が向上している。
Holter electrocardiogram is a test method that evaluates cardiac function by continuously recording an electrocardiogram for each beat for a long period of time under the normal conditions of daily life. It is developing as a method for accurately and faithfully extracting abnormalities in cardiovascular function.
Conventionally, Holter electrocardiogram generally records the electrocardiogram continuously for 24 hours in a completely normal daily life, and reproduces and analyzes it on a scanner within a short period of time. Contrast ECG changes.
However, in such an analog system, (1) there is a limit to the improvement of frequency characteristics, and ST change and QT sensation cannot be evaluated correctly. (2) When used repeatedly, the tape or head is soiled or magnetized. (3) Uneven rotation of the motor or winding of the tape may occur. (4) There is a limit to downsizing. (5) It is necessary to convert the data to a hard disk by converting the data during playback. Therefore, there is a problem that analysis takes time, and recently, the digital method is being changed. Due to the significant improvement of the frequency characteristics, the ST-T change recorded by the digital method is almost the same as that of the normal electrocardiogram, and the reliability of QT interval measurement is improved.
しかしながら、ホルター心電図は、２４時間あるいはそれ以上長時間連続して心電図を記録するものであるため、時々刻々変化する心電図の異常を瞬時に把握するためには、デジタル方式では、四六時中表示画面を注視している必要があり、心電図を解析する者の負担が大きく問題であった。また、心電図の異常を見落とす危険もあり問題であった。 However, the Holter ECG records the electrocardiogram continuously for a long period of 24 hours or more, so in order to instantly grasp the ECG abnormality that changes from moment to moment, the digital method displays all the time. It was necessary to keep an eye on the screen, and the burden on the person who analyzed the electrocardiogram was a big problem. Also, there was a risk of overlooking the electrocardiogram abnormality.
本発明は、如上の事情に鑑みてなされたもので、心電図の異常を瞬時に把握できるように表示する方法およびその装置を提供することを目的とする。また、その異常がどの様な心血管機能の異常に起因するものかを素早く判断することができるように表示する方法およびその装置を提供することを目的とする。 The present invention has been made in view of the above circumstances, and an object thereof is to provide a method and an apparatus for displaying an abnormality of an electrocardiogram so that the abnormality can be grasped instantaneously. It is another object of the present invention to provide a display method and an apparatus thereof so that it is possible to quickly determine what kind of abnormality of the cardiovascular function is caused by the abnormality.
本発明の心電図の表示方法は、心筋活動電位の波形が１サイクル毎に同一の基点から始まるようにされ、心筋活動電位の波長が所定の範囲を超えて変わった場合に、時間軸に関して連続する少なくとも２サイクル以上の前記波形が同時に重なり表示されるとともに、心筋活動電位の波長が所定の範囲を超えて変わった場合に、変化した後の心筋活動電位の波長が変化する前の心筋活動電位の波長と同じ波長になるように調整されることを特徴とする。波長については、波長の変化に関係なく、時間軸に関して連続する心筋活動電位の波長が常に同じ波長になるようにされていてもよい。この場合、波長調整や波長同一化と同時に補正係数（例えばＲ−Ｒ時間）を表示するようにしても良い。
ここで、基点はＲであってもよく、また、Ｐ、Ｔ、Ｕのいずれかの頂点、またはＱ、Ｓのいずれかであってもよい。
また、本発明の心電図表示装置は、入力された心筋活動電位を１サイクル毎に同一の基点に合わせるサイクル基点同一化アルゴリズムと、時間軸に関して連続する少なくとも２サイクル以上の心筋活動電位の波形を同時に重なり表示する重なり表示アルゴリズムと、心筋活動電位の波長が所定の範囲を超えて変わった場合に、変化した後の心筋活動電位の波長が変化する前の心筋活動電位の波長と同じ波長になるように調整する波長調整アルゴリズム、とを含んでなることを特徴とする。波長については、波長の変化に関係なく、時間軸に関して連続する心筋活動電位の波長が常に同じ波長になるようにする波長同一化アルゴリズムであってもよい。この場合、波長調整や波長同一化と同時に補正係数（例えばＲ−Ｒ時間）を表示するようにしても良い
ここで、基点はＲであってもよく、また、Ｐ、Ｔ、Ｕのいずれかの頂点、またはＱ、Ｓのいずれかであってもよい。また、異常な心筋活動電位が発生したときに迅速な対応が可能なように、時間軸に関して隣り合う心筋活動電位の波形のズレが所定の範囲を超えて２サイクル以上連続して発生したときに警報を発する、警報手段が設けられていてもよい。
The electrocardiogram display method of the present invention is such that the waveform of the myocardial action potential starts from the same base point every cycle, and when the wavelength of the myocardial action potential changes beyond a predetermined range, it continues with respect to the time axis. When the waveform of the myocardial action potential changes at the same time and the waveform of the myocardial action potential changes beyond a predetermined range, the waveform of the myocardial action potential before the change of the myocardial action potential after the change is displayed. The wavelength is adjusted to be the same wavelength as the wavelength. As for the wavelength, the wavelengths of the myocardial action potentials continuous with respect to the time axis may always be the same wavelength regardless of the change in wavelength. In this case, a correction coefficient (for example, RR time) may be displayed simultaneously with wavelength adjustment and wavelength equalization.
Here, the base point may be R, may be any vertex of P, T, U, or any of Q, S.
The electrocardiogram display device of the present invention simultaneously generates a cycle base point identification algorithm that matches the input myocardial action potential to the same base point every cycle and a waveform of myocardial action potentials of at least two cycles continuous with respect to the time axis. Overlapping display algorithm for overlapping display, and when the myocardial action potential wavelength changes beyond a predetermined range, the wavelength of the myocardial action potential after the change is the same as the wavelength of the myocardial action potential before the change And a wavelength adjustment algorithm for adjusting to the above. The wavelength may be a wavelength equalization algorithm that ensures that the myocardial action potentials that are continuous with respect to the time axis always have the same wavelength regardless of the change in wavelength. In this case, a correction coefficient (for example, RR time) may be displayed simultaneously with wavelength adjustment and wavelength equalization. Here, the base point may be R, and any of P, T, and U Or any of Q and S. In addition, when a shift in waveform of myocardial action potentials adjacent to the time axis occurs continuously for two cycles or more so as to enable quick response when an abnormal myocardial action potential occurs. Alarm means for issuing an alarm may be provided.
以上、一般的に本発明を記述したが、より一層の理解は、いくつかの特定の実施例を参照することによって得ることが出来る。これらの実施例は本明細書に例示の目的のためにのみ提供されるものであり、他の旨が特定されない限り、限定的なものではない。 Although the present invention has been generally described above, a better understanding can be obtained by reference to certain specific embodiments. These examples are provided herein for illustrative purposes only and are not limiting unless otherwise specified.
本発明によれば、以下のような効果が期待できる。すなわち、本発明の心電図表示装置は、入力された心筋活動電位を１サイクル毎に同一の基点に合わせるサイクル基点同一化アルゴリズムと、時間軸に関して連続する少なくとも２サイクル以上の心筋活動電位の波形を同時に重なり表示する重なり表示アルゴリズムを含んでいるので、波形の変化の把握が容易である。また、心筋活動電位の波長が所定の範囲を超えて変わった場合に、変化した後の心筋活動電位の波長が変化する前の心筋活動電位の波長と同じ波長になるように調整する、波長調整アルゴリズムを含んでいるので、波長の変化による心筋活動電位の波形のズレを異常な波形と見誤ることが無くなる。また、時間軸に関して隣り合う心筋活動電位の波形のズレが所定の範囲を超えて２サイクル以上連続して発生したときに警報を発する警報手段を設けることにより、体動などによるアーキテクト（通常２サイクル以上連続して同じような波形が発生することがない）の発生による誤警報を無くし、異常な波形が発生したときにのみ警報が発せられるようにすることができる。しかもこのような警報手段を設けているので、四六時中表示画面を注視している必要が無く、また、心筋活動電位の異常に対して迅速に対応することが可能であり、その異常がどの様な心血管機能の異常に起因するものかを素早く判断することができる。 According to the present invention, the following effects can be expected. That is, the electrocardiogram display device of the present invention simultaneously generates a cycle base point identification algorithm for matching the input myocardial action potential to the same base point every cycle and a waveform of myocardial action potentials of at least two cycles continuous with respect to the time axis. Since an overlapping display algorithm for overlapping display is included, it is easy to grasp the change in waveform. In addition, when the wavelength of the myocardial action potential changes beyond a predetermined range, the wavelength adjustment is performed so that the wavelength of the myocardial action potential after the change is the same as the wavelength of the myocardial action potential before the change. Since the algorithm is included, the misalignment of the myocardial action potential waveform due to the change in wavelength is not mistaken for an abnormal waveform. Further, by providing an alarm means for issuing an alarm when the deviation of the waveform of the myocardial action potential adjacent to the time axis exceeds a predetermined range and is continuously generated for two cycles or more, an architect (usually 2) It is possible to eliminate a false alarm due to the occurrence of a similar waveform for no more than a cycle, and to issue an alarm only when an abnormal waveform occurs. Moreover, since such an alarm means is provided, it is not necessary to watch the display screen all the time, and it is possible to quickly respond to an abnormality of the myocardial action potential. It is possible to quickly determine what kind of abnormality is caused by cardiovascular function.
心電図表示装置は、入力された心筋活動電位を１サイクル毎に基点Ｒに合わせるサイクル基点同一化アルゴリズムと、時間軸に関して連続する少なくとも２サイクル以上の心筋活動電位の波形を同時に重なり表示する重なり表示アルゴリズム、心筋活動電位の波長が所定の範囲を超えて変わった場合に、変化した後の心筋活動電位の波長が変化する前の心筋活動電位の波長と同じ波長になるように調整する、波長調整アルゴリズム、異常な心筋活動電位が発生したときに迅速な対応が可能なように、時間軸に関して隣り合う心筋活動電位の波形のズレが所定の範囲を超えて２サイクル以上連続して発生したときに警報を発する警報手段を備えている。 An electrocardiogram display device includes a cycle base point identification algorithm for matching an input myocardial action potential to a base point R every cycle, and an overlap display algorithm for simultaneously displaying at least two cycles of myocardial action potential waveforms that are continuous with respect to the time axis. When the wavelength of the myocardial action potential changes beyond a predetermined range, the wavelength adjustment algorithm that adjusts the wavelength of the myocardial action potential after the change to the same wavelength as that of the myocardial action potential before the change In order to enable quick response when an abnormal myocardial action potential occurs, an alarm is issued when the waveform shift of the adjacent myocardial action potential with respect to the time axis exceeds a predetermined range for two or more consecutive cycles. It is provided with alarm means to emit.
先ず、実施例１について図１を用いて説明する。
図１は本発明の心電図表示装置のプロセスフローチャートの一実施例である。
図1に示すように、本発明の心電図表示装置は、電源をONにすると（Ｓ１）表示画面に心電図が連続表示される（Ｓ２）。次に重なり表示ボタンを押し（Ｓ３）、選択した心電図サイクルの基点（例えばＲ）と重なり表示したいサイクル数（例えば3）を入力して（Ｓ４）、確認ボタンを押すと（Ｓ５）、Ｒからの3つの波形が重なり表示される。次に波形のズレが所定の範囲（Ｐ、Ｑ、Ｒ、Ｓ、Ｔ、Uそれぞれについて予め決められている）を超えると（Ｓ７）警報が発せられる（Ｓ８）。警報手段としては、ブザーやランプの点灯・点滅などが採用可能である。次いで確認ボタンを押すと（Ｓ９）警報は止まり表示画面は波形の連続表示に戻る（Ｓ２）。一方、波長のズレが所定の範囲（例えば１０％）を超えた場合（Ｓ１０）、変化する前の心筋活動電位の波長と同じ波長に波長調整が行われ（Ｒ−Ｒ正規化、Ｓ１１）、調整された波長でＲからの3つの波形が重なり表示されるＳ６）。最後に電源をOFFにすると（Ｓ１２）、表示画面が消える。
First, Example 1 will be described with reference to FIG.
FIG. 1 is an example of a process flowchart of an electrocardiogram display device of the present invention.
As shown in FIG. 1, when the electrocardiogram display device of the present invention is turned on (S1), the electrocardiogram is continuously displayed on the display screen (S2). Next, the overlap display button is pressed (S3), the base point of the selected ECG cycle (for example, R) and the number of cycles to be overlapped (for example, 3) are input (S4), and the confirmation button is pressed (S5). These three waveforms are displayed overlapping. Next, when the waveform deviation exceeds a predetermined range (predetermined for each of P, Q, R, S, T, and U) (S7), an alarm is issued (S8). As a warning means, a buzzer or lighting / flashing of a lamp can be employed. Next, when the confirmation button is pressed (S9), the alarm is stopped and the display screen returns to the continuous display of the waveform (S2). On the other hand, when the wavelength shift exceeds a predetermined range (for example, 10%) (S10), wavelength adjustment is performed to the same wavelength as the myocardial action potential wavelength before the change (RR normalization, S11), Three waveforms from R are superimposed and displayed at the adjusted wavelength S6). Finally, when the power is turned off (S12), the display screen disappears.
図２は本発明の波長調整アルゴリズムの一実施例を示すフローチャートであり、図３は図２のアルゴリズムを説明するための説明図である（サイクル基点同一化アルゴリズムと重なり表示アルゴリズムについては、説明を省略する）。
波長調整アルゴリズムは、図２に示すように、先ず実測データ番号（Ｌ）を０に設定し（Ｓ１）、表示データ番号（Ｋ）も０に設定する（Ｓ２）。次にサンプリングされたＫ番目のデータの画面上の位置を求め（Ｓ３）、サンプリングされた（Ｋ−１）番目のデータの画面上の点とＫ番目のデータの画面上の点を直線で結ぶ（Ｓ４）。Ｌが最終データであるかどうかを判断し（Ｓ５）、Ｌが最終データである場合には処理が終了する。Ｌが最終データでない場合には、次のデータのサンプリングを行うよう指示し（Ｓ６）、次いで１画面が終了しているかどうかを判断し（Ｓ７）、終了している場合にはＳ２に戻り、終了していない場合にはＳ３に戻る。但し、図２におけるＲＲＳ、ＲＲＲ、ＷＳ、ＷＲ、ＷＳｎ、ＷＲｎ、Ｌ、Ｋ、Data(L)、Ｖunitは図３に示す通りである。
FIG. 2 is a flowchart showing an embodiment of the wavelength adjustment algorithm of the present invention, and FIG. 3 is an explanatory diagram for explaining the algorithm of FIG. 2 (the cycle base point identification algorithm and the overlap display algorithm will be described). (Omitted).
As shown in FIG. 2, the wavelength adjustment algorithm first sets the actual measurement data number (L) to 0 (S1), and also sets the display data number (K) to 0 (S2). Next, the position on the screen of the sampled Kth data is obtained (S3), and the point on the screen of the sampled (K-1) th data and the point on the screen of the Kth data are connected by a straight line. (S4). It is determined whether or not L is the final data (S5). If L is the final data, the process ends. If L is not the final data, the next data is instructed to be sampled (S6), then it is determined whether one screen is finished (S7), and if it is finished, the process returns to S2. If not completed, the process returns to S3. However, RRS, RRR, WS, WR, WSn, WRn, L, K, Data (L), and Vunit in FIG. 2 are as shown in FIG.
次に、実施例2について図4を用いて説明する。
図４は本発明の心電図表示装置のプロセスフローチャートの他の実施例であり、実施例1において始めから波長が調整されるようにされたものである。
図４に示すように、本発明の心電図表示装置は、電源をONにすると（Ｓ１）表示画面に心電図が連続表示される（Ｓ２）。次に重なり表示ボタンを押し（Ｓ３）、選択した心電図サイクルの基点（例えばＲ）と重なり表示したいサイクル数（例えば3）を入力して（Ｓ４）、確認ボタンを押すと（Ｓ５）、Ｒからの3つの波長調整された波形が重なり表示される。次に波形のズレが所定の範囲（Ｐ、Ｑ、Ｒ、Ｓ、Ｔ、Uそれぞれについて予め決められている）を超えると（Ｓ７）警報が発せられる（Ｓ８）。警報手段としては、ブザーやランプの点灯・点滅などが採用可能である。次いで確認ボタンを押すと（Ｓ９）警報は止まり表示画面は波形の連続表示に戻る（Ｓ２）。最後に電源をOFFにすると（Ｓ１０）、表示画面が消える。
Next, Example 2 will be described with reference to FIG.
FIG. 4 shows another embodiment of the process flowchart of the electrocardiogram display device of the present invention. In
As shown in FIG. 4, in the electrocardiogram display device of the present invention, when the power is turned on (S1), the electrocardiogram is continuously displayed on the display screen (S2). Next, press the overlap display button (S3), input the base point of the selected ECG cycle (for example, R) and the number of cycles to be overlapped (for example, 3) (S4), and press the confirmation button (S5). These three wavelength-adjusted waveforms are displayed in an overlapping manner. Next, when the waveform deviation exceeds a predetermined range (predetermined for each of P, Q, R, S, T, and U) (S7), an alarm is issued (S8). As a warning means, a buzzer or lighting / flashing of a lamp can be employed. Next, when the confirmation button is pressed (S9), the alarm is stopped and the display screen returns to the continuous display of the waveform (S2). Finally, when the power is turned off (S10), the display screen disappears.
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| JP2012254121A (en) * | 2011-06-07 | 2012-12-27 | Olympus Corp | Wireless communication system |
| US8843072B2 (en) | 2011-06-07 | 2014-09-23 | Olympus Corporation | Sensing wireless terminal |
| JP2015084861A (en) * | 2013-10-29 | 2015-05-07 | パイオニア株式会社 | Signal processing device and method, and computer program and recording medium |
| CN113057651A (en) * | 2019-12-30 | 2021-07-02 | 石家庄以岭药业股份有限公司 | Data sending method and device, data acquisition device and storage medium |
| CN113116360A (en) * | 2019-12-30 | 2021-07-16 | 石家庄以岭药业股份有限公司 | Portable data acquisition unit |
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| CN113057651A (en) * | 2019-12-30 | 2021-07-02 | 石家庄以岭药业股份有限公司 | Data sending method and device, data acquisition device and storage medium |
| CN113116360A (en) * | 2019-12-30 | 2021-07-16 | 石家庄以岭药业股份有限公司 | Portable data acquisition unit |
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