The direct approach to the heart.
D001281:Atrial Fibrillation / Q000601:surgery; D006348:Cardiac Surgical Procedures; D003097:Collateral Circulation; D003331:Coronary Vessels / Q000601:surgery; D004554:Electric Countershock; D006335:Heart Injuries / Q000601:surgery; D006801:Humans; D006931:Hyperbaric Oxygenation; D008722:Methods; D009873:Operating Rooms; D014111:Tourniquets; D014693:Ventricular Fibrillation / Q000601:surgery