Certified Rehabilitation Registered Nurse (CRRN) Practice Exam

What advantage does pursed lip breathing provide in respiratory management?

1. Improves lung capacity

2. Increases oxygen uptake

3. Keeps the alveoli open longer

4. Reduces anxiety during breathing

The correct answer is: Keeps the alveoli open longer

Pursed lip breathing serves a significant purpose in respiratory management, particularly for individuals with conditions such as chronic obstructive pulmonary disease (COPD). One of its primary benefits is that it enhances the time that air remains in the alveoli, the tiny air sacs in the lungs where gas exchange occurs. This technique involves inhaling slowly through the nose and then exhaling through pursed lips, which creates a slight resistance in the airway during exhalation. This resistance helps to prevent the alveoli from collapsing and ensures they remain open longer, allowing more time for oxygen to diffuse into the bloodstream and for carbon dioxide to be expelled. By keeping the alveoli open, pursed lip breathing facilitates better ventilation and gas exchange, which is critical for improving overall respiratory function and reducing the work of breathing. In practice, this means that patients can experience improved efficiency of their breathing, decreased shortness of breath, and a better sense of control during episodes of respiratory distress. These benefits are particularly important in rehabilitation settings, where encouraging effective breathing techniques can enhance recovery and improve quality of life for individuals with compromised pulmonary function.