How does positive-pressure ventilation affect cardiac output?
A. There is no effect on cardiac output because positive-pressure ventilation is the act of normal breathing.
B. It decreases intrathoracic pressure, which facilitates venous return to the heart and increases cardiac output.
C. It causes pressure in the chest to decrease, which increases stroke volume and cardiac output.
D. It increases intrathoracic pressure, which decreases venous return to the heart and causes a decrease in cardiac output.
Answer: D. It increases intrathoracic pressure, which decreases venous return to the heart and causes a decrease in cardiac output.
You might also like to view...
_______ moves should be used whenever the ill or injured person is at risk of further injury and it is safe for the responder to move him quickly
Fill in the blank(s) with the appropriate word(s).
A cheilotomy is the repair of the lips.?
Indicate whether the statement is true or false