Affiliation:
1. Department of Biology, Georgetown University, Washington, DC 20057.
Abstract
Cardiac activity was monitored during arousal from deep hibernation in three species of hibernators (Citellus tridecemlineatus, Marmota monax, and Mesocricetus auratus). Individuals of each species showed marked arrhythmias, and these were confined to a body temperature range of between 11 and 20 degrees C, measured orally or rectally. The arrhythmias consisted of intermittent periods of asystole and bradycardia and were sometimes marked by the appearance of premature ventricular contractions and elevated or depressed S-T segments. Surgical manipulation of euthermic M. monax, under pentobarbital sodium anesthesia, indicated that none of the arrhythmias observed was inducible by injections of cold saline into the vena cava.
Publisher
American Physiological Society
Subject
Physiology (medical),Physiology
Cited by
18 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献