Author Question: Which of the following disorders can cause an increase in systemic vascular resistance? a. Lung ... (Read 59 times)

tuffie · **on:** Jul 16, 2018

Which of the following disorders can cause an increase in systemic vascular resistance?

a. Lung collapse
b. Hypervolemia
c. Chronic bronchitis
d. Cardiogenic pulmonary edema

Question 2

Which of the following hemodynamic parameter that is not within normal limits?

a. Cardiac index (CI) = 4 L/min/m2
b. Mixed venous oxygen content (CO2) = 10 vol
c. Mean arterial pressure (MAP) = 18 mm Hg
d. Pulmonary vascular resistance (PVR) = 200 dyne sec cm5

heinisk01 · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: B
Chronic obstructive pulmonary disease (COPD) does not, in and of itself, cause an increase in systemic vascular resistance. Cardiogenic pulmonary edema and lung collapse will decrease sys-temic vascular resistance. Hypovolemia will cause an increase in systemic vascular resistance due to stimulation of the baroreceptor reflex.

Answer to Question 2

ANS: C
The normal values for the hemodynamic parameters in this question are: Cardiac index (CI) = 2.5-4 L/min/m2, mixed venous oxygen content (CO2) = 15 vol, mean arterial pressure (MPAP) = 10-20 mm Hg, and pulmonary vascular resistance (PVR) =100-250 dyne sec cm5. The value that is not within normal limits is the CO2.