Which of the following practices facilitate muCous clearance in patients with cystic fibrosis
I.Positive expiratory pressure therapy
II.Low-frequency inspiratory oscillation
III.Positive end-expiratory pressure therapy
IV.High-frequency expiratory oscillation

Question

Quizplus · Accepted Answer

Positive expiratory pressure therapy (Option I) helps to mobilize mucus from the smaller airways to the large airways, where it can be cleared more easily. High-frequency expiratory oscillation (Option IV) can also help to loosen and mobilize mucus in the airways. Options II and III are not as effective for mucus clearance in patients with cystic fibrosis. Low-frequency inspiratory oscillation (Option II) may provide some benefit for airway clearance, but it is less effective than the other options. Positive end-expiratory pressure therapy (Option III) can help to maintain airway opening and increase lung volumes, but it does not directly facilitate mucus clearance.

Which of the Following Practices Facilitate MuCous Clearance in Patients