another group of patients with different arrhythmias ( recurrent paroxysmal atrial tachycardia , sustained ectopic atrial tachycardia , or sinus rhythm with premature atrial beats which precipitated runs of atrial fibrillation ) was treated with continuous rapid atrial pacing to produce 2:1 a-v block .
C0003811
arrhythmias
C0004238
atrial fibrillation