title: Ben Franklin and open heart surgery.
mesh_terms: D006328:Cardiac Catheterization; D006348:Cardiac Surgical Procedures / Q000266:history*; D004562:Electrocardiography / Q000266:history; D006324:Heart Arrest, Induced; D006329:Heart Conduction System / Q000502:physiology; D006334:Heart Function Tests / Q000266:history; D006493:Heparin / Q000302:isolation & purification; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008866:Microsurgery / Q000266:history; D008991:Monitoring, Physiologic / Q000266:history; D009609:Nitrous Oxide / Q000266:history; D010106:Oxygenators / Q000266:history; D010827:Physiology / Q000266:history*; D011641:Public Relations; D011871:Radiology / Q000266:history; D012106:Research / Q000266:history*; D012107:Research Design; D012109:Research Support as Topic; D014481:United States
chemical_list: D006493:Heparin; D009609:Nitrous Oxide