Prerequisites for successful weaning include: 1. psychological readiness. 2. adequate gag and swallow reflexes. 3. ability to follow instructions. 4. adequate cough
a. 1, 2, and 3 only
b. 2 and 4 only
c. 1, 2, 3, and 4
d. 3 and 4 only
ANS: C
Adequate central nervous system function is needed to ensure stable ventilatory drive, adequate secretion clearance (cough and deep breathing), and protection of the airway (gag reflex and swallow). In addition, level of consciousness, dyspnea, anxiety, depression, and motivation can affect weaning success. The patient ideally is awake and alert, free of seizures, and able to follow instructions.
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