title: Low cardiac output after open intracardiac operations.
mesh_terms: D001784:Blood Gas Analysis; D002302:Cardiac Output; D006343:Heart Septal Defects / Q000601:surgery; D006350:Heart Valve Prosthesis; D006801:Humans; D011183:Postoperative Complications; D012773:Shock, Surgical / Q000517:prevention & control*; D013771:Tetralogy of Fallot / Q000601:surgery