Calculate the left ventricular stroke work for a patient with a ...

[imowrer]

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

Question 2

The following hemodynamic measurements were obtained from a patient in the intensive care unit: pulmonary artery pressure (PAP) = 67/25 mm Hg, pulmonary artery occlusion pressure (PAOP) = 18 mm Hg,
 
  blood pressure (BP) = 100/50 mm Hg, central venous pressure (CVP) = 17 mm Hg, cardiac out-put (C.O.) = 5.7 L/min, and heart rate (HR) = 75 beats/min. Calculate this patient's pulmonary vascular resistance (PVR).
  a. 295 dyne  sec  cm5
  b. 393 dyne  sec  cm5
  c. 800 dyne  sec  cm5
  d. 1165 dyne  sec  cm5

[leahchrapun]

Answer to Question 1

ANS: C
Left ventricular stroke work (LVSW) = (MAP  SV)  0.0136/BSA, MAP = Systolic BP + 2 (Diastolic BP)/3, SV = C.O./HR

Answer to Question 2

ANS: A
PVR = (MPAP  MLAP)/PBF  80

[imowrer]

Excellent

[ghepp]

Gracias!