Excerpt from The Journal of Experimental Medicine, 1917, Vol. 25: With Seventy-One Plates and One Hundred and Twenty-Six Figures in the d104 The condition of auricular fibrillation is easily diagnosed by the aid of arterial and jugular tracings or by electrocardiograms, and in most cases it can be recognized by careful physical examination alone. It is not possible, however, to interpret all the waves found in the venous records. Generally, these tracings may be placed in one of two classes; (0) those in which prominent systolic waves, differing in contour from the small, impact waves of the normal phlebograrn, predominate or occur alone, and (6) those in which large or sma11 diastolic waves recur occasionally, in groups, or in a continued series averaging 250 to 500 per minute. The prominent systolic waves, designated as ventricular waves, have generally been attributed to an associated tricuspid regurgitation. Lewis1 states: 'the ventricular form of venous pulse' is a term which expresses the only fixed quality manifested by graphic records taken from the jugular veins in these cases. The older conception, that the prominence of the venous pul sation is an index of the degree of tricuspid reflux, is not without a definite foundation. The inference follows that tricuspid regurgitation is a frequent accompaniment of this form of arrhythmia. It is of interest to reexamine to what extent this is true. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.