The incidence is 2 out of 10,000 people. A chest X-ray may be performed. Hospitalization may be required for severe illness. Supportive measures include oxygen by mask or by mechanical ventilation if respiratory distress or pulmonary edema is present, and rest. The affected person will breathe easier in a sitting position.
Most cases are mild and symptoms improve with a return to lower altitude.
Severe cases may result in death due to respiratory distress or coma . In remote locations emergency evacuation may not be possible or treatment may be delayed. These conditions could affect the outcome. Calling Your Health Care Provider Call your health care provider if symptoms of acute mountain sickness develop, even if symptoms resolved when returning to a lower altitude. Prevention Education of mountain travelers before ascent is the key to prevention.