Advantages of adding continuous positive airway pressure (CPAP) to T tube weaning include which of the following?
1. Improved blood oxygenation
2. Decreased work of breathing
3. Compensation for auto-PEEP
4. Faster weaning or extubation
a. 1 and 3 only
b. 1, 2, and 3 only
c. 3 and 4 only
d. 2, 3, and 4 only
ANS: B
CPAP has the advantage of maintaining lung volume during the weaning phase and thus of im-proving the patient's oxygenation status. Minimal levels of CPAP may be useful in reducing work of breathing and compensating for auto-PEEP, particularly in patients with obstructive lung disease.
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