Study of Ventricular Response in Atrial Fibrillation

Horan, Leo G. M.D.
Kistler, Jack C. M.D.

Cardiology Section of the Medical Service of the Veterans Administration Hospital, New Orleans, and the Department of Medicine, Tulane University of Louisiana, New Orleans, Louisiana

Received for Publication September 20, 1960.

Circulation Research 9(2):p 305-311, March 1961.

A study was made of the variation in R-R interval in 47 long electrocardiographic recordings from 17 patients with atrial fibrillation. The distribution curve of ventricular intervals was found to vary in configuration according to the mean ventricular rate. A single high peak was seen at fast rates, two peaks at intermediate rates, and a single low peak flattening to a long low curve at slow rates.