Oral analgesics.
This patient has developed a spontaneous pneumomediastinum most likely from helium inhalation.
Other etiologies include severe cough, forceful emesis, barotrauma, and foreign body aspiration. Pleuritic chest pain is the predominant symptom and can be accompanied with dyspnea and/or dysphagia.
Subcutaneous emphysema is found as crepitus over the neck or upper thorax on physical examination.
The CXR shows air tracking around and outlining mediastinal structures.
Conservative treatment with rest, observation and analgesics is appropriate as most cases self-resolve over several days.
Pneumomediastinum is commonly associated with asthma exacerbations. The patient in this vignette, was not having an active asthma exacerbation; therefore, bronchodilators or a peak expiratory-flow rate measurements are not required. A chest tube is not warranted as the CXR does not show a pneumothorax. [F&L pp. 1412-13]