Fig. 3From: Renal autoregulation and blood pressure management in circulatory shockStatic renal autoregulation. a Linear regression can be used to fit two straight lines to the data. b If there is a more gradual transition to pressure-dependent flow, a logistic curve may be fitted. The shoulder of the curve can be calculated and used to define the lower limit of renal autoregulation (ALL). AI autoregulatory indexBack to article page