A patient is being evaluated for tracheal damage sustained while having undergone prolonged tracheostomy intubation approximately 3 months earlier. The flow-volume loop demonstrates a fixed obstructive pattern
What is the most likely cause of the problem?
a. Tracheomalacia
b. Laryngeal web
c. Cord paralysis
d. Tracheal stenosis
ANS: D
Tracheal stenosis will appear as a fixed obstructive pattern, with flattening of both the inspiratory and expiratory limbs of the flow-volume loop (Figure 36-25).
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