The role of intra-aortic balloon pumping and surgery in the treatment of preinfarction angina.
D000787:Angina Pectoris / Q000601:surgery*; D001013:Aorta, Thoracic; D001243:Assisted Circulation; D006439:Hemodynamics; D006801:Humans; D009203:Myocardial Infarction; D009204:Myocardial Revascularization