Which of the following factors cause an increase in venous return? I. increase in the lung compliance II. increase in mean systemic pressure III. increase in the right atrial pressure IV. decrease in right atrial pressure
A. II, III only
B. II, IV only
C. I, III, IV only
D. I, II, III only
?ANS: B
A. Incorrect response: See explanation B.
B. Correct response: An increased mean systemic pressure or a decrease in the right atrial pressure will increase venous return. Conversely, a reduction in the mean systemic pressure or an increase in the right atrial pressure decreases venous return.
C. Incorrect response: See explanation B.
D. Incorrect response: See explanation B.
You might also like to view...
A physician orders 3 mL of an 8% drug solution. You have only a 10% solution available. How many milliliters of 10% solution do you need to make the new 8% solution?
a. 0.24 mL b. 2.6 mL c. 24 mL d. 12.4 mL
A pulse oximetry reading below 80 percent indicates ____________
a. adequate oxygenation b. mild hypoxia c. moderate hypoxia d. severe hypoxia