TY - GEN
T1 - ANALYSIS OF VENTRICULAR ARRHYTHMIAS
T2 - A RELIABLE DISCRIMINATION TECHNIQUE.
AU - Chen, S.
AU - Thakor, N. V.
AU - Mower, M. M.
PY - 1987
Y1 - 1987
N2 - A quantitative technique is presented for discrimination of ventricular fibrillation (VF) signals from other mono-morphic and polymorphic ventricular arrhythmias. Ventricular arrhythmias are analyzed by means of a two-step procedure: (i) a short-term autocorrelation function (SACF) is calculated, and (ii) a regression test is carried out on a plot of peak magnitudes of ACF. A plot of SACF lag vs. peak order (SACF-lag plot) should be linear for ventricular tachycardias, but not for VF. This hypothesis was tested on 31 episodes of ventricular arrhythmias recorded from humans during electrophysiologic procedures. SACF-lag plots were during for three successive 1. 5-s segments of each record and tested for a regression fit (by an F-test) to the ACF-lag plot. The VF discrimination algorithm was found to perform well after only one segment and to improve its performance until, after the third segment, sensitivity, specificity, and test efficiency were all 100%. This technique seems applicable for accurate discrimination of ventricular arrhythmias.
AB - A quantitative technique is presented for discrimination of ventricular fibrillation (VF) signals from other mono-morphic and polymorphic ventricular arrhythmias. Ventricular arrhythmias are analyzed by means of a two-step procedure: (i) a short-term autocorrelation function (SACF) is calculated, and (ii) a regression test is carried out on a plot of peak magnitudes of ACF. A plot of SACF lag vs. peak order (SACF-lag plot) should be linear for ventricular tachycardias, but not for VF. This hypothesis was tested on 31 episodes of ventricular arrhythmias recorded from humans during electrophysiologic procedures. SACF-lag plots were during for three successive 1. 5-s segments of each record and tested for a regression fit (by an F-test) to the ACF-lag plot. The VF discrimination algorithm was found to perform well after only one segment and to improve its performance until, after the third segment, sensitivity, specificity, and test efficiency were all 100%. This technique seems applicable for accurate discrimination of ventricular arrhythmias.
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M3 - Conference contribution
AN - SCOPUS:0023576981
SN - 081860817X
T3 - Computers in Cardiology
SP - 179
EP - 182
BT - Computers in Cardiology
PB - IEEE
ER -