Calculate resistance of a blood vessel mm Hg timevolume if

Calculate resistance of a blood vessel (mm Hg × time/volume), if the pressure (P) in the inlet and outlet ends (Pi and Po) are 12 and 4 mmHg, respectively, and the flow rate (Q) equals 90 ml/min.

Solution

flow rate (Q) = pressure difference/resistance

90 = (12-4)/resistance

resistance = 8/90 = 0.08 mmHg ml/min