A 32-year-old patient has a pulmonary vascular resistance of 4 mm Hg/L per minute and a cardiac output of 5 L/min. What is her driving pressure for moving blood through the pulmonary circula on?: (A) 10 mm Hg, (B) 15 mm Hg, (C) 20 mm Hg, (D) 30 mm Hg
Answer is C. 20 mm Hg DP = R xQ . = 4 mm Hg/L/min x 5 L/min = 20 mm Hg.