title: Effects of preexisting collaterals on myocardial revascularization by counterpulsation.
mesh_terms: D000818:Animals; D001243:Assisted Circulation; D003331:Coronary Vessels / Q000601:surgery*; D004285:Dogs; D004567:Electrodes, Implanted; D007423:Intra-Aortic Balloon Pumping; D009204:Myocardial Revascularization; D009206:Myocardium / Q000378:metabolism; D010101:Oxygen Consumption