title: Need for cardiac catheterisation in assessment of patients for valve surgery.
mesh_terms: D006328:Cardiac Catheterization / Q000009:adverse effects; D003327:Coronary Disease / Q000150:complications; D004452:Echocardiography; D006349:Heart Valve Diseases / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D006351:Heart Valves / Q000601:surgery; D006801:Humans; D011446:Prospective Studies