The nurse instructs the client with chronic obstructive pulmonary disease (COPD) to practice pursed-lip breathing and explains that this breathing technique is done:

1. to break up mucus that has accumulated in the airway.
2. to use the abdominal muscles to breathe, giving the diaphragm a rest.
3. to prolong exhalation to help remove carbon dioxide from the lungs.
4. to prolong inhalation to help bring more oxygen to the lungs.


Answer: 3

1. It does not help to break up mucus.
2. Use of abdominal muscles improves diaphragmatic movement.
3. The alveoli become less elastic and tend to collapse with expiration, causing air to be trapped in the lungs. Expiration is prolonged.
4. Expiration, not inspiration, is prolonged.

Nursing

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