interventions , which in the normal heart caused large increases in heart rate and myocardial contractility , e.g . isoproterenol and exercise , or which decreased coronary perfusion pressure , e.g . nitroglycerin or isoproterenol , elicited paradoxical responses in moderate global ischemia , i.e. , left ventricular enddiastolic diameter and pressure rose , and dp/dt/p and velocity fell substantially .
C0018787
heart
C0027061
myocardial