Which of the following is true about exercise and airway clearance?
1. Exercise can enhance mucus clearance.
2. Exercise can improve pulmonary function.
3. Exercise can improve matching.
4. Exercise can cause desaturation in some patients.
a. 1, 3, and 4 only
b. 1, 2, and 3 only
c. 1, 2, 3, and 4
d. 2, 3, and 4 only
ANS: C
Adding exercise to mobilization and coughing can further enhance mucus clearance. Exercise al-so improves overall aeration and ventilation-perfusion matching. Besides increasing sputum pro-duction, it can also improve pulmonary function. In addition, exercise can improve a patient's general fitness, self-esteem, and quality-of-life. On the other hand, exercise can be fatiguing and result in oxygen desaturation among patients with significant pulmonary impairment.
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