title: Pericardial and subcutaneous air after maxillary surgery.
authors.forename: D L
authors.initials: DL
authors.lastname: Orr
mesh_terms: D004646:Emphysema / Q000209:etiology*; D006801:Humans; D007431:Intraoperative Complications / Q000209:etiology*; D008443:Maxillary Sinus / Q000601:surgery*; D010496:Pericardium; D011175:Positive-Pressure Respiration / Q000009:adverse effects; D013352:Subcutaneous Emphysema / Q000209:etiology*