What is a potential risk associated with overtightening the straps on a NIV mask?

Overtightening the straps on a noninvasive ventilation (NIV) mask can lead to tissue necrosis. This occurs because excessive pressure on the skin can compromise blood flow and cause damage to the soft tissues beneath. Prolonged compression can lead to ischemia, resulting in tissue breakdown and eventual necrosis.

Maintaining appropriate tension on the straps is crucial to ensure a proper seal around the mask without causing excessive pressure on the face. While other issues like mask displacement or air leakage can occur from improper fit, the primary concern with overtightening is the potential harm to the skin and underlying tissues, which underscores the importance of regularly assessing and adjusting the fit of the mask to prevent such complications.