الفهرس 
ECG RECOGNITION OF AFOnly 14 pages are availabe for public view
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Abstract
trial fibrillation (AF) is the most common arrhythmia in
clinical practice, accounting for approximately one-third
of hospitalizations for cardiac rhythm disturbance. AF is
associated with an increased long-term risk of stroke, heart
failure, and all-cause mortality, especially in women.
The observation that potentials arising in or near the ostia
of the pulmonary veins (PV) often provoke AF, and
demonstration that elimination of these foci abolished AF
escalated enthusiasmfor catheter-based ablation. The technique
of ablation has continued to evolve from early attempts to target
individual ectopic foci within the PV to circumferential
electrical isolation of the entire PV musculature.
Restoration of sinus rhythm after catheter ablation forAF
significantly improved left ventricular function, exercise
capacity, symptoms, and quality of life (usually within the first
٣ to ٦ months), even in the presence of concurrent heart disease
and when ventricular rate control was adequate before ablation.
In this work we have studied the density of pulmonary
vein potentials (PVPs) and their distribution in different
pulmonary veins for patients with history of AF and for patients
without AF history using the lasso catheter.
We decided to postulate a new method to quantify the
density of PVPs around the perimetry of the PV ostia. The
perimetric distribution of PVPs was given a number out of ١٠
indicating the number of Lasso electrodes recording PVPs.