Supply The heart normally receives 4% of cardiac output, or ~ 250 mL/min of blood. Fatty acids and lactate are the predominant sources of energy, although glucose can be utilized (depending on glucose and insulin concentrations, as well as PaO2). Demand Impact of PVA on mVO2 (Image by Thiele, Nemergut, Lynch)Normal mVO2 is 8-10 mL/100g/min. […]