When fluid is present in the alveoli:
a. alveoli collapse and atelectasis occurs.
b. diffusion of oxygen and carbon dioxide is impaired.
c. hypoventilation occurs.
d. the patient is in heart failure.
B
Fluid prevents the diffusion of gases. It does not cause atelectasis or hypoventilation. Fluid can be present in the alveoli secondary to heart failure; however, there are other causes as well, such as acute respiratory distress syndrome.
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