Perioperative arrhythmias frequently occur during cardiac surgery and may also occur during non-cardiac surgery, particularly in patients with structural heart disease. Perioperative arrhythmias represents a major cause of morbidity in either cardiac or non-cardiac surgical procedures. Complete atrioventricular block (CAVB) and torsade de pointes (torsades) are critical arrhythmias, although their incidence during non-cardiac surgery is rare in patients with no underlying structural heart disease. We present a rare case of life-threatening arrhythmias of CAVB and torsades that occurred during cadaveric orthotopic liver transplantation in a 59-year-old man with no structural heart disease. Rapid recognition of the arrhythmias and prompt treatment using a transcutaneous pacemaker and cardioversion successfully saved the patient's life. The sinus rhythm was resumed during pacemaker removal postoperatively. The possible etiology and management of CAVB and torsades during liver transplantation are discussed herein.