High-Altitude Pulmonary Edema

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Abstract
High-altitude pulmonary edema occurs in mountaineers who ascend rapidly to heights of more than 2500 m. It is at the severe end of the spectrum of symptoms of acute mountain sickness, which include headache, insomnia, anorexia, lethargy, vomiting, oliguria, and peripheral edema. Vigorous young men are most susceptible to high-altitude pulmonary edema. Other risk factors include strenuous exercise, cold weather, and recent respiratory tract infection. Those who have had high-altitude pulmonary edema in the past are likely to have it again. The symptoms and signs are cough, tachypnea, tachycardia, orthopnea, cyanosis, rales, and frothy pink sputum. Symptoms usually begin two . . .