the effects of two h2-receptor antagonists , ranitidine ( ran ) and cimetidine ( cim ) , on the ventricular fibrillation threshold ( vft ) and dispersion of the refractory period in animals with early acute myocardial ischemia induced by coronary artery ligation ( cal ) were studied .
C2757005
h2-receptor antagonists
C0034665
ranitidine