Figure 9
Effects of incremental infusion rates of vasopressin (1.2, 2.4 and 4.8 units/hour) on renal blood flow (RBF), glomerular filtration rate (GFR), renal oxygen consumption (RVO 2 ) and renal oxygen extraction (RO 2 Ex) in post-cardiac surgery patients. Vasopressin causes a constriction of renal efferent arterioles with a decrease in RBF and an increase in GFR and RVO2.Vasopressin impairs the renal oxygen demand/supply relationship as reflected by the increase in RO2 Ex. From [7] with permission.