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An analysis of ionic flow of spontaneous slow action potential of guinea pig aortic vestibule

Qiu Liying, Chen Yanjing, Ge Fugui, Wang Debao

Department of Physiology,Zhangjiakou Medical College.Zhangjiakou 075029,Hebei

Abstract

Spontaneous slow action potentials of aortic vestibule of isolated guinea pig heart were intracellularlly recorded. Electrophysiological parameters examined are: maximal diastolic potential (MDP), amplitude of action potential (APA), maximal rate of depolarization of phase 0 (V_(max)), velocity of diastolic depolarization of phase 4 (VDD), duration of 50% and 90% repolarization (APD_(50) and APD_(90)) and rate of pacemaker firing (RPF).

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Citing This Article：

Qiu Liying, Chen Yanjing, Ge Fugui, Wang Debao. An analysis of ionic flow of spontaneous slow action potential of guinea pig aortic vestibule. Acta Physiol Sin 2000; 52 (4): (in Chinese with English abstract).