When a patient has a flail chest, what happens during the ventilatory cycle?
a. The I:E ratio becomes inverse.
b. Air leaks out through the flail area.
c. Air leaks in through the flail area.
d. Air is shunted from one lung to the other.
D
Because of the instability of the flail area, the ribs and lung tissue will move in the opposite direction than normal during a breath. This can cause air to be shunted from one lung to the other during the ventilatory cycle.
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