title: Subcutaneous emphysema as a complication of oxygen therapy using nasal cannulas.
mesh_terms: D000368:Aged; D002404:Catheterization / Q000009:adverse effects*; D004646:Emphysema / Q000209:etiology*; D005260:Female; D006801:Humans; D009666:Nose; D010102:Oxygen Inhalation Therapy / Q000009:adverse effects*; D013352:Subcutaneous Emphysema / Q000209:etiology*