Question: How Often Should I Change My Nasal Cannula?
Answer: Because of the nature of where the prongs of the nasal cannula sit (in the nares), they get soiled quite regularly. While there is little clinical evidence supporting the claim that a soiled nasal cannula can lead to lung infections like pneumonia, the American Lung Association recommends changing your nasal cannula fairly often, especially when the prongs become soiled or uncomfortable. The term "fairly often," however, is quite subjective, and what one person believes to be "fairly often" can differ greatly from another. That said, most manufacturers advise that patients change their nasal cannulas once a week.