the influence of pre-ischemic treatment with propranolol ( 0.8 mg/kg bw ) or with verapamil ( 0.1 mg/kg bw ) on myocardial o2 consumption and on coronary resistance after cardioplegic arrest ( 300 minutes at 22 degrees - 24 degrees c ) was investigated , using a langendorff technique in open chest experiments ( canine hearts ) .
C0027061
myocardial
C0018787
hearts