title: Umbrella balloon for maximum unloading during intra-aortic balloon pumping.
mesh_terms: D000818:Animals; D001243:Assisted Circulation / Q000295:instrumentation*; D004285:Dogs; D006439:Hemodynamics; D007423:Intra-Aortic Balloon Pumping / Q000295:instrumentation* / Q000379:methods; D008297:Male