Invited commentary.
D004562:Electrocardiography; D006322:Heart Aneurysm / Q000601:surgery*; D006439:Hemodynamics; D006801:Humans; D011183:Postoperative Complications / Q000209:etiology; D013610:Tachycardia / Q000601:surgery*; D014693:Ventricular Fibrillation / Q000601:surgery