Effects of vagal stimulation on monophasic action potentials and transmcmbrane potentials of hyperkalcmic rabbit heart
- VernacularTitle:迷走神经刺激对家兔高血钾时心室肌单相动作电位及心室肌细胞跨膜电位的影响
- Author:
Genshan LI
;
Youlun HU
- Publication Type:Journal Article
- Keywords:
Action potentials;
Vagus nerve, stimulation;
Hyperkalemia
- From:
Chinese Journal of Pathophysiology
1986;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Effects of vagal stimulation on monophasic action potentials (MAP) and transmembrane potentials (TMP) of hyperkalemic rabbit heart were investigated. The results showed that ventricular conduction block induced by hyperkalemia can be improved by vagal stimulation. Amplitude of MAP (MAPA) and maximum rate of rise of MAP (MVmax) were increased, durations of MAP(MAPD) lengthened. Also in single ventricular cell amplitude of action potential (APA) and maximum rate of rise of action potential (Vmax) were increased, while durations of action potential (APD) lengthened. In addition, MAPD and APD measured at the same site are completely in accordance.
