Figure 50-36 Myocardial oxygen uptake in different states of temperature and workload. (Redrawn from Buckberg GD, Brazier JR, Nelson RL, et al: Studies of the effects of hypothermia on regional myocardial blood flow and metabolism during cardiopulmonary bypass. I. The adequately perfuse beating, fibrillating, and arrested heart. J Thorac Cardiovasc Surg 73:87–94, 1977.)