Harit Desai, DO

We describe a rare case in which chest pain and subcutaneous emphysema developed while the patient was undergoing routine dental extractions under local anesthesia and inhaled nitrous oxide. The patient was found to have extensive pneumomediastinum on a CT scan of the chest. The patient received supportive care and 24-hour high-flow oxygen (100%) and was discharged the next day without any residual symptoms. At a 10-day follow-up visit, neck and chest radiographs revealed no further subcutaneous emphysema.