JPH04236941A - Vpc waveform detecting system - Google Patents
Vpc waveform detecting systemInfo
- Publication number
- JPH04236941A JPH04236941A JP3004180A JP418091A JPH04236941A JP H04236941 A JPH04236941 A JP H04236941A JP 3004180 A JP3004180 A JP 3004180A JP 418091 A JP418091 A JP 418091A JP H04236941 A JPH04236941 A JP H04236941A
- Authority
- JP
- Japan
- Prior art keywords
- waveform
- vpc
- template
- characteristic parameters
- wave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 238000000718 qrs complex Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- 208000009729 Ventricular Premature Complexes Diseases 0.000 claims 1
- 238000007796 conventional method Methods 0.000 abstract description 4
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 206010047289 Ventricular extrasystoles Diseases 0.000 description 25
- 238000005129 volume perturbation calorimetry Methods 0.000 description 25
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 230000002861 ventricular Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明はＶＰＣ波形検出方式に関
し、特に計測した心電図信号から解析処理を行ってＶＰ
Ｃ波形を検出するＶＰＣ波形検出方式に関する。[Industrial Application Field] The present invention relates to a VPC waveform detection method, and in particular, the present invention relates to a VPC waveform detection method, and in particular, performs analysis processing on measured electrocardiogram signals to detect VP waveforms.
The present invention relates to a VPC waveform detection method for detecting a C waveform.
【０００２】0002
【従来の技術】デジタル化された心電図信号から、各Ｑ
ＲＳ群について、特徴パラメータを抽出し、その特徴パ
ラメータに関してのテンプレート波形との比較・検証に
より、ＶＰＣ（Ｖｅｎｔｒｉｃｕｌａｒ Ｐｒｅｍａｔ
ｕｒｅ Ｃｏｎｔｒａｃｔｉｏｎ） 波形を検出する方
法がある。[Prior Art] From a digitized electrocardiogram signal, each Q
For the RS group, feature parameters are extracted, and by comparing and verifying the feature parameters with template waveforms, VPC (Ventricular Premat
There is a method of detecting the waveform.
【０００３】すなわち、特徴パラメータを各ＱＲＳ群の
面積、振幅、時間軸方向の幅、前後のＲ波とのＲＲ間隔
等に設定し、そして、テンプレート波形の各特徴パラメ
ータと、比較対象ＱＲＳ群の各特徴パラメータとを比較
検証して、一定の閾値を越えた場合には、ＶＰＣ性有り
と判定し、更に各特徴パラメータの判定結果の組合せに
より、ＶＰＣ波形を検出していた。That is, characteristic parameters are set for each QRS complex such as area, amplitude, width in the time axis direction, RR interval between previous and succeeding R waves, etc., and each characteristic parameter of the template waveform and the QRS complex to be compared are set. When each characteristic parameter is compared and verified, and a certain threshold value is exceeded, it is determined that there is a VPC property, and further, a VPC waveform is detected by combining the determination results of each characteristic parameter.
【０００４】0004
【発明が解決しようとする課題】上述した従来の方法は
、特徴パラメータだけでは正常を異常と判定するフォー
ルスポジティブの防止のために特に小信号同士の比較に
おいては、閾値レベルを上げて条件を厳しくせざるを得
なく、この事が異常を正常と判定するフォールスネガテ
ィブを招く結果となり、結果的にフォールスポジティブ
とフォールスネガティブとのトレードオフが発生し、総
合的なＶＰＣ波形の検出精度を高めることが困難である
という欠点がある。[Problems to be Solved by the Invention] In the conventional method described above, in order to prevent false positives in which normality is determined to be abnormal using feature parameters alone, the threshold level is raised to make the conditions stricter, especially when comparing small signals. This inevitably leads to false negatives in which abnormalities are judged as normal, resulting in a trade-off between false positives and false negatives, which increases the overall VPC waveform detection accuracy. The disadvantage is that it is difficult.
【０００５】[0005]
【課題を解決するための手段】本発明のＶＰＣ波形検出
方式は、心電図信号からＶＰＣ波形を検出する技術にお
いて、量子化された心電図信号から各ＱＲＳ群について
の特徴パラメータを抽出することと、テンプレート波形
とのマッチングを行なう際にＲ波検出位置に同期点を置
くことと、双方の波形の量子化されたデータの比較を行
ないＶＰＣ波形を検出することとを備えて構成される。[Means for Solving the Problems] The VPC waveform detection method of the present invention is a technique for detecting a VPC waveform from an electrocardiogram signal. It is configured to include placing a synchronization point at the R wave detection position when performing matching with the waveform, and detecting the VPC waveform by comparing quantized data of both waveforms.
【０００６】[0006]
【実施例】次に本発明について図面を参照して説明する
。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings.
【０００７】本発明の概要は、従来のＶＰＣ波形検出方
式に用いられてきた特徴パラメータに加え、新たに量子
化された２つの波形データの差分和についても、閾値と
比較を行なうことによりＶＰＣ検出精度を高める手段を
有している。The outline of the present invention is to perform VPC detection by comparing the sum of differences between two newly quantized waveform data with a threshold value in addition to the characteristic parameters used in the conventional VPC waveform detection method. It has means to increase accuracy.
【０００８】図２〜図４は、本発明の一実施例を示すＨ
ＣＰチャートである。ステップ１は、心電図信号からＲ
波の位置を検出する処理である。ステップ２は、一定時
間内の心電図信号から正常波形（テンプレート波形）を
選択する処理である。FIGS. 2 to 4 illustrate an embodiment of the present invention.
This is a CP chart. Step 1 is R from the ECG signal.
This process detects the position of waves. Step 2 is a process of selecting a normal waveform (template waveform) from electrocardiogram signals within a certain period of time.
【０００９】ステップ３は、一定時間内の心電図信号か
らＶＰＣ波形を検出する処理であるが、本処理はステッ
プ４〜９に細分化される。ステップ４は、一定時間内の
心電図信号からテンプレート波形を含めたＲ波ごとの全
ＱＲＳ群について、面積・振幅・時間幅など各種の特徴
パラメータを抽出する処理である。ステップ５は、一定
時間内の心電図信号の全ＱＲＳ群とテンプレート波形と
を比較してＶＰＣの判定をする処理であるが、本処理は
ステップ６〜９に細分化される。Step 3 is a process of detecting a VPC waveform from an electrocardiogram signal within a certain period of time, and this process is subdivided into steps 4 to 9. Step 4 is a process of extracting various characteristic parameters such as area, amplitude, and time width for all QRS complexes for each R wave including template waveforms from electrocardiogram signals within a certain period of time. Step 5 is a process of comparing all QRS complexes of the electrocardiogram signal within a certain period of time with the template waveform to determine VPC, and this process is subdivided into steps 6 to 9.
【００１０】ステップ６は、各ＱＲＳ群とテンプレート
波形とを各特徴パラメータについて比較・検証を行ない
ＶＰＣ波形を検出する処理であるが、ステップ７の従来
の方法による各特徴パラメータの比較処理と、ステップ
８の本発明による特徴パラメータの比較・検証処理と、
ステップ９の複数の特徴パラメータの比較結果から総合
的なＶＰＣ波形の判定を行なう処理から構成される。ス
テップ７は、従来の方法であり、ＱＲＳ群の面積、ＱＲ
Ｓ群の振幅、ＱＲＳ群の時間幅、ＰＲＥ−ＲＲ間隔（比
較対象となっているＱＲＳ群のＲ波と、その直前に出現
しているＱＲＳ群のＲ波の時間軸方向の間隔）、ＰＯＳ
Ｔ−ＲＲ間隔（比較対象となっているＱＲＳ群のＲ波と
、その直前に出現しているＱＲＳ群のＲ波の時間軸方向
の間隔）について、テンプレート波形との比較・検証を
行ない、一定の閾値を越す場合にはＶＰＣ性有りと判断
する処理である。Step 6 is a process of comparing and verifying each QRS complex and template waveform with respect to each characteristic parameter to detect a VPC waveform. Comparison and verification processing of feature parameters according to the present invention of 8.
This process consists of a process of determining a comprehensive VPC waveform from the comparison results of a plurality of characteristic parameters in step 9. Step 7 is the conventional method, in which the area of the QRS complex, QR
Amplitude of S complex, time width of QRS complex, PRE-RR interval (interval in the time axis direction between the R wave of the QRS complex being compared and the R wave of the QRS complex that appears immediately before it), POS
The T-RR interval (the interval in the time axis direction between the R wave of the QRS complex that is being compared and the R wave of the QRS complex that appears immediately before it) is compared and verified with the template waveform, and is kept constant. If the threshold value is exceeded, it is determined that there is VPC property.
【００１１】ステップ８はテンプレート波形と、比較対
象となるＱＲＳ群の量子化されたデータの差分和Ｐにつ
いて閾値との比較を行ない、閾値を越すものについては
ＶＰＣ性有りと判断する処理である。ステップ８に使用
されている予じめ作成されたテンプレート波形と比較対
象となるＱＲＳ群の差分和についてのモデル図は図１に
示されている。Ｒ波検出点ｒａｄｒを同期点として、前
後各２０点の各データの差分を４１点分加算して、差分
和を求める。なお、この場合１点の間隔は４ｍｓｅｃに
してある。Step 8 is a process in which the sum of differences P between the template waveform and the quantized data of the QRS complex to be compared is compared with a threshold value, and if it exceeds the threshold value, it is determined that there is VPC property. A model diagram of the sum of differences between the pre-created template waveform used in step 8 and the QRS complex to be compared is shown in FIG. Using the R wave detection point radr as the synchronization point, the difference between the data of 20 points before and after is added for 41 points to obtain the sum of the differences. In this case, the interval between one point is 4 msec.
【００１２】ステップ９は、各特徴パラメータの比較結
果についてのＶＰＣ性の有無の組合せにより、総合的に
ＶＰＣ波形の判断をする処理である。[0012] Step 9 is a process of comprehensively determining the VPC waveform based on the combination of the presence/absence of VPC properties in the comparison results of each feature parameter.
【００１３】ステップ１０は、各ＱＲＳ群についてのＶ
ＰＣ判定結果を基に、ＶＰＣのパターン〔例として、二
連発（ＶＰＣが連続して２回起きる）、二段脈、三段脈
、アールオンティー（ＲｏｎＴ）型、三連発以上のショ
ートラン型等があげられる〕の分類を行なう処理である
。Step 10 includes determining V for each QRS complex.
Based on the PC judgment results, determine the pattern of VPC [for example, double pulse (VPC occurs twice in a row), double pulse, triple pulse, RonT type, short run type with three or more consecutive pulses] This is a process that performs classification.
【００１４】[0014]
【発明の効果】以上説明したように本発明は、テンプレ
ート波形と比較対象となるＱＲＳ群の量子化データの差
分和を求め、それを閾値と比較することによるＶＰＣ性
の有無を検出することにより、従来の手法では捕えきれ
なかったＶＰＣ（特に、テンプレート波形、ＶＰＣ波形
とも、小信号である場合等）に対して、他のフォールス
ポジティブを増加させることなく検出率を高めることが
できるという効果がある。[Effects of the Invention] As explained above, the present invention calculates the sum of differences between the template waveform and the quantized data of the QRS complex to be compared, and detects the presence or absence of VPC by comparing it with a threshold value. , it has the effect of increasing the detection rate without increasing other false positives for VPCs that could not be captured by conventional methods (especially when both the template waveform and VPC waveform are small signals). be.
【図１】本発明のＱＲＳ群とテンプレートとのマッチン
グ状態を示す説明図。FIG. 1 is an explanatory diagram showing a matching state between a QRS complex and a template according to the present invention.
【図２】本発明の一実施例の処理を示すＨＣＰチャート
。FIG. 2 is an HCP chart showing processing according to an embodiment of the present invention.
【図３】本発明の一実施例の処理を示すＨＣＰチャート
。FIG. 3 is an HCP chart showing processing according to an embodiment of the present invention.
【図４】本発明の一実施例の処理を示すＨＣＰチャート
。FIG. 4 is an HCP chart showing processing according to an embodiment of the present invention.
１〜１０ ステップ 1 to 10 steps
Claims (1)
「ＶＰＣ」という）波形を検出する技術において、量子
化された心電図信号から各ＱＲＳ群についての特徴パラ
メータを抽出することと、テンプレート波形とのマッチ
ングを行なう際にＲ波検出位置に同期点を置くことと、
双方の波形の量子化されたデータの比較を行ないＶＰＣ
波形を検出することとを備えて成ることを特徴とするＶ
ＰＣ波形検出方式。Claim 1: A technique for detecting a premature ventricular contraction (hereinafter referred to as "VPC") waveform from an electrocardiogram signal, which includes extracting feature parameters for each QRS complex from a quantized electrocardiogram signal, and a template waveform. When performing matching, placing a synchronization point at the R wave detection position,
Compare the quantized data of both waveforms and perform VPC
V characterized by comprising: detecting a waveform.
PC waveform detection method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3004180A JPH04236941A (en) | 1991-01-18 | 1991-01-18 | Vpc waveform detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3004180A JPH04236941A (en) | 1991-01-18 | 1991-01-18 | Vpc waveform detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04236941A true JPH04236941A (en) | 1992-08-25 |
Family
ID=11577514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3004180A Pending JPH04236941A (en) | 1991-01-18 | 1991-01-18 | Vpc waveform detecting system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04236941A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009073986A1 (en) * | 2007-12-13 | 2009-06-18 | Heart Force Medical Inc. | Method and apparatus for acquiring and analyzing data relating to a physiological condition of a subject |
-
1991
- 1991-01-18 JP JP3004180A patent/JPH04236941A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009073986A1 (en) * | 2007-12-13 | 2009-06-18 | Heart Force Medical Inc. | Method and apparatus for acquiring and analyzing data relating to a physiological condition of a subject |
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