isolated guinea pig hearts subjected to global ischaemia were used to investigate whether low extracellular na+ exerts an anti-arrhythmic action against reperfusion arrhythmias , and the effects of extracellular na+ manipulation upon myocardial ion contents ( na+ , k+ and ca2+ ) during ischaemia and reperfusion were studied .
C0018787
hearts
C0027061
myocardial