Cardiac problems.
D000328:Adult; D000368:Aged; D000758:Anesthesia; D001145:Arrhythmias, Cardiac; D001281:Atrial Fibrillation; D004562:Electrocardiography; D013502:General Surgery; D006323:Heart Arrest / Q000150:complications*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011300:Preoperative Care; D013610:Tachycardia; D014693:Ventricular Fibrillation