Computer program for pattern recognition of electrocardiograms

✍ Scribed by Josef Wartak; John A. Milliken; Jane Karchmar

• Publisher: Elsevier Science
• Year: 1970
• Tongue: English
• Weight: 883 KB
• Volume: 3
• Category: Article
• ISSN: 0010-4809
• DOI: 10.1016/0010-4809(70)90041-8

✦ Synopsis

A computer program for the ECG pattern recognition by a computer has been described. It utilizes a thresholding principle for locating the QRS complex and employs critical points for determining its configuration. Those points indicate either change of direction or maximal slope of the ECG signal. Threshold selection and finding critical points is accomplished by calculating first differences between consecutive ECG data points. Configuration of the QRS complex is determined by fitting straight lines to critical points according to rules set in a decision table. After the baseline has been established by the "histogram" method or by a straight line fitting between points immediately before QRS complexes in two consecutive cycles, the P wave and T wave are detected on the basis of maximum or minimum amplitude and zero crossings (referred to zero DC level). Configuration of the P or T wave is established on the basis of a number of peaks, their polarity and a sequence of their occurrence.