Paroxysmal Supraventricular Tachycardia Induction in Patients with Wolff-Parkinson-White Syndrome

Publisher Website
Google Scholar
Abstract
In 54 patients with pre-excitation, 30 (56%) had inducible A-V (atrio-ventricular) re-entrant paroxysmal tachycardia. Of these 30, 20 had spontaneous paroxysmal tachycardia (4 also had atrial fibrillation), 4 had spontaneous paroxysmal atrial fibrillation, 5 had a history of palpitation without arrhythmia and 1 was asymptomatic. In 24 patients (44%), paroxysmal tachycardia was not inducible. Of these 24, none had documented paroxysmal tachycardia, 4 had atrial fibrillation, 9 had palpitation without arrhythmia and 11 were asymptomatic. The incidence of documented paroxysmal tachycardia was higher in the patients with inducible tachycardia (P < 0.001).Tachycardia induction was noted in 20 of 20 patients with spontaneous paroxysmal tachycardia, 8 of 12 patients with paroxysmal atrial fibrillation, 5 of 14 patients with palpitation and no arrhythmia, and 1 of 12 asymptomatic patients. The frequency of ability to induce paroxysmal tachycardia was significantly higher in the patients with documented spontaneous paroxysmal tachycardia and the patients with paroxysmal atrial fibrillation than in the asymptomatic group (P < 0.01).