PROBLEM TO BE SOLVED: To surely separate and determine ventricular fibrillation and the other arrhythmia.SOLUTION: In the arrhythmic signal detection method for detecting electrocardiogram signals in at least a right ventricle and a left ventricle (S1), calculating a parameter value relating to the detected electrocardiogram signals of at least the right ventricle and the left ventricle (S2), and determining the presence/absence of the occurrence of at least ventricular fibrillation among the arrhythmia on the basis of the calculated parameter value (S3), the parameter value includes at least one of a cardiac cycle "period" obtained from the autocorrelation function of the two respective electrocardiogram signals, the ratio "interval ratio" of the cardiac cycle of the two respective electrocardiogram signals, delay time "delay" calculated from the peak value of the cross correlation function of the two electrocardiogram signals, a "phase" obtained from the arc tangent value of the division value of the size of the potential of the two electrocardiogram signals, and a "length" obtained from the square root of sum of squares of the size of the potential of the two respective electrocardiogram signals.COPYRIGHT: (C)2011,JPO&INPIT【課題】心室細動とその他の不整脈とをより確実に分離して判定する。【解決手段】少なくとも右心室および左心室における心電信号を検出し(S1)、検出された少なくとも右心室および左心室の心電信号に関するパラメータ値を算出し(S2)、算出されたパラメータ値に基づいて、不整脈のうち少なくとも心室細動の発生の有無を判定する(S3)不整脈信号検出方法であって、前記パラメータ値が、2つの各心電信号の自己相関関数から求められる心周期period、2つの各心電信号の心周期の比interval ratio、2つの心電信号の相互相関関数のピーク値から算出される遅延時間delay、ならびに、2つの心電信号の電位の大きさの除算値の逆正接値から求められるphaseおよび2つの各心電信号の電位の大きさの二乗和の平方根から求められるlengthのうち少なくとも1つを含む不整脈信号検出方法を提供する。【選択図】図1
