PMID: 1204857Oct 1, 1975Paper

Electrical and contractile activity of the myocardium during a change in temperature

Fiziologicheskiĭ zhurnal SSSR imeni I. M. Sechenova
Iu P Vedernikov

Abstract

In rhythmically stimulated (0.05/sec) isolated strips of the ventricle myocardium of the fresh water fish, drop of the temperature (from 20 degrees C to 10 degrees C) increased the AP duration but decreased the extent of contractions; raise of the temperature (from 10 degrees C to 20 degrees C) increased the extent of contractions but decreased the AP duration. The discrepancy between the electric and the contractile activities points out the importance of processes of the transmembrane and intracellular redistribution of ions occurring at rest, for refilling of intracellular Ca deposit released during excitation.

Related Concepts

Related Feeds

Cardiac Electrophysiology

Cardiac electrophysiology is the study of electrical activities of the heart and includes the assessment, diagnosis, and treatment of cardiac events. Find the latest research on cardiac electrophysiology here.