“…11 Cardiac surgery has been shown to bring about improvement in the quality of life and functional status in elderly patients. 3,4,12 However, cardiac surgery in the elderly is challenging for several reasons including advanced atherosclerosis, impaired diastolic heart function, renal failure, reduced lung compliance, and respiratory muscle weakness. 5,6,13,14 Elderly patients are at a higher risk of death, longer hospital stay, and neurologic complications and are more likely to undergo reoperation due to postoperative bleeding.…”