Partial airway obstruction can result in which of the following? 1. Increased work of breathing 2. Air trapping or overdistention 3. Increased expiratory flows 4. Ventilation/perfusion ratio () imbalances
a. 1 and 2 only
b. 1, 2, and 3 only
c. 3 and 4 only
d. 2, 3, and 4 only
ANS: B
By restricting airflow, partial obstruction can increase the work of breathing and lead to air trap-ping, overdistention, and ventilation/perfusion () imbalances.
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