Reduction of extent of myocardial infarction by counterpulsation.
D000818:Animals; D001243:Assisted Circulation / Q000295:instrumentation; D002302:Cardiac Output; D004285:Dogs; D004395:Dye Dilution Technique; D009203:Myocardial Infarction / Q000628:therapy*; D012769:Shock / Q000628:therapy; D013997:Time Factors