The closing volume is:
A. The volume remaining in the lung at the end of expiration below which alveolar collapse begins to occur, resulting in physiologic shunting.
B. Higher in young persons.
C. Not changed during surgery.
D. Relative to the oxygen content of mixed venous blood.
Answer:A
The closing volume is:
A. The volume remaining in the lung at the end of expiration below which alveolar collapse begins to occur, resulting in physiologic shunting. B. Higher in young persons. C. Not changed during surgery. D. Relative to the oxygen content of mixed venous blood.