Dicumarol and quinidine in the ambulatory treatment of chronic auricular fibrillation.

Thirty-three patients with chronic auricular fibrillation were treated with digitalis and quinidine and in addition were given Dicumarol(R) to reduce the risk of embolism. In 21 of the patients the fibrillation was caused by rheumatic heart disease, and in 12 by arteriosclerosis or hypertension. Normal sinus rhythm was restored in 55 per cent of the 33 patients, in 67 per cent of those with arteriosclerosis or hypertension, and in 45 per cent of those with rheumatic heart disease. Embolism did not occur.