[Skip to Content]
Access to paid content on this site is currently suspended due to excessive activity being detected from your IP address 54.197.75.176. Please contact the publisher to request reinstatement.
[Skip to Content Landing]
Article
March 1920

EXPERIMENTAL DETERMINATION OF THE INFLUENCE OF ABNORMAL CARDIAC RHYTHMS ON THE MECHANICAL EFFICIENCY OF THE HEART

Author Affiliations

MADISON, WIS.

From the Department of Physiology of the University of Wisconsin.

Arch Intern Med (Chic). 1920;25(3):317-324. doi:10.1001/archinte.1920.00090320088007
Abstract

INTRODUCTION  The occurrence of an abnormal cardiac rhythm clinically involves two important and essentially different considerations. First, the information it may give as to the general pathologic condition of the heart and the prognosis of the disease, and second, the mechanical influence it exerts on the pumping action of the heart. The normal heart beat, in which there is a regular succession of auricular systoles within certain rates, each of which is followed after a definite interval by contraction of the two ventricles, is best adapted to the function of the heart as a pump. Anything which seriously interferes with the normal rate or coordination of beats, interferes, to a certain extent, with the mechanical efficiency of the heart. An excessive rate of contraction, even though the regularity and coordination of beats is maintained, reduces the amount of blood pumped by the heart by shortening and rendering insufficient the period

First Page Preview View Large
First page PDF preview
First page PDF preview
×