Electrophysiological properties in paroxysmal atrial fibrillation complicated with the Wolff-Parkinson-White syndrome: comparison with paroxysmal atrial fibrillation alone.
Electrophysiological studies were performed in 26 patients with atrial fibrillation (AF). Thirteen patients had the Wolff-Parkinson-White (WPW) syndrome (group A), and another 13 patients did not have the WPW syndrome (group B). The right atrium effective refractory period was significantly shorter in group A than in group B. The wavelength index which was defined as the ratio of the refractory period to the conduction delay was significantly lower in group A than in group B. Accordingly, patients in group A had a greater tendency to produce atrial reentry than those in group B.
Gondo
N
N
Department of Internal Medicine, Fukuoka University, School of Medicine, Japan.
Kumagai
K
K
Matsuo
K
K
Annoura
M
M
Moroe
K
K
Arakawa
K
K
D000328:Adult; D001281:Atrial Fibrillation / Q000150:complications / Q000503:physiopathology*; D004562:Electrocardiography; D004594:Electrophysiology; D005260:Female; D006325:Heart Atria / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D012849:Sinoatrial Node / Q000503:physiopathology; D014927:Wolff-Parkinson-White Syndrome / Q000150:complications* / Q000503:physiopathology