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Sequential analysis for automatic detection of atrial fibrillation and flutter

A method for automatic detection of atrial flutter and fibrillation by sequential analysis of the atrial activity in a single ECG lead is developed. A previous method for automatic detection of atrial flutter/fibrillation was based on the assessment of atrial activity in TP segments. This approach is used in the present work, connected with 'P wave absence' and 'ventricular arrhythmia detection, forming a combined algorithm with three consecutive logic steps. The proposed method has been applied on 329 records from a diagnosed atrial flutter-fibrillation database. An improvement of the total accuracy=98.8% and Sensitivity=95.7% was achieved mostly due to the reduction of false negative errors. The sequential analysis correctly detects 'fine' fibrillation where atrial activity is barely visible, and the effect of electromyogram noise was reduced.