title: A new concept in circulatory assistance--the dual-chambered intraaortic balloon.
mesh_terms: D000388:Air; D001013:Aorta, Thoracic; D001243:Assisted Circulation / Q000295:instrumentation*; D006328:Cardiac Catheterization; D008722:Methods; D011140:Polyurethanes; D012770:Shock, Cardiogenic / Q000628:therapy*
chemical_list: D011140:Polyurethanes