The Relation of Heart Size to the Time Intervals of the Heart Beat, with Particular Reference to the Elephant and the Whale
- 8 January 1953
- journal article
- Published by Massachusetts Medical Society in New England Journal of Medicine
- Vol. 248 (2) , 69-70
- https://doi.org/10.1056/nejm195301082480207
Abstract
ONE of the moot questions in human electrocardiography is that of the normal upper limit of the atrioventricular conduction time (PR interval) and of the duration of the spread of the excitation wave through the ventricles (QRS complex). It is the general consensus that the former may measure from 0.10 second or even a little less in the healthy newborn infant to 0.20 second or even a little more in the healthy full-grown adult, and that the latter may measure from about 0.05 second in the infant to about 0.10 second in the adult. The change from the shorter measurements . . .Keywords
This publication has 3 references indexed in Scilit:
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- The electrocardiogram of the elephantAmerican Heart Journal, 1938
- Some notes on the anatomy of the elephant's heartAmerican Heart Journal, 1938