Calculate the left ventricular stroke work for a patient with a body surface area of 1.1 m2, blood pressure 105/68 mm Hg, heart rate 86 beats per minute, and cardiac output of 4.3 L/min
a. 10.9 g-m/m2
b. 35.6 g-m/m2
c. 49.5 g-m/m2
d. 54.4 g-m/m2
ANS: C
Left ventricular stroke work (LVSW) = [(MAP ? SV) ? 0.0136]/BSA, MAP = [Systolic BP + 2 (Diastolic BP)]/3, SV = C.O./HR
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