PMID: 9548648Apr 21, 1998Paper

Echocardiographic and hemodynamic determinations of the ventricular filling pattern in some teleost fishes

Physiological Zoology
N C LaiV Bhargava

Abstract

The current concept of ventricular filling in elasmobranch and teleost fishes is that atrial contraction is the primary, if not the exclusive, determinant of ventricular filling. Recent echocardiographic and on-line hemodynamic data for elasmobranchs, however, have demonstrated a biphasic ventricular filling pattern, characterized by an early phase that occurs during ventricular relaxation and a late phase that follows atrial systole. This study reports echocardiographic and hemodynamic analyses of ventricular filling in three teleost genera (Paralabrax, Channa, Monopterus) having markedly different heart morphologies. Both the profiles of the atrioventricular pressure gradient in Paralabrax and the ventricular inflow velocity in all three genera indicate a biphasic ventricular filling pattern. Although the relative contribution of the early and late filling phases differed among the species studied, interspecific differences in heart structure did not obscure the biphasic pattern. Also, pericardiectomy did not affect the biphasic ventricular filling pattern in Paralabrax. The presence of biphasic filling in teleosts establishes a functional similarity with the elasmobranchs and, because the biphasic ventricular filling pattern...Continue Reading

Citations

Oct 9, 2007·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Erik Sandblom, Michael Axelsson
Jul 28, 2004·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Joshua A GregoryN Chin Lai
Sep 28, 2016·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Denis V Abramochkin, Matti Vornanen
Mar 28, 2008·Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology·Paul A CotterKenneth J Rodnick
Jul 26, 2013·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Douglas A SymeKenneth J Rodnick
Jun 26, 2014·Journal of Fish Biology·B Jonsson, N Jonsson
Jun 14, 2003·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Adrienne Robyn MinerickKenneth R Olson
Aug 24, 2019·The Journal of Experimental Biology·Catherine J A WilliamsTobias Wang
Mar 30, 2018·Pflügers Archiv : European journal of physiology·Adam N KeenHolly A Shiels
May 5, 2004·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·N Chin LaiJeffrey B Graham
Dec 15, 2010·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Nina K IversenTobias Wang

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