Abstract
The cardiovascular system in the normal child from high altitude may differstrikingly from that of the child at sea level or lower altitudes. Physical signs of pulmonary hypertension, right ventricular preponderance in the electrocardiogram, and prominence of the pulmonary artery, right ventricle, and right atrium in the chest x-ray may be present. Cardiac catheterization studies have substantiated the presence of higher pulmonary arterial pressures in the normal resident of high altitude than those found at low altitude. Findings suggest that altitudes over 10,000 feet represent critical altitudes so far as the pulmonary circulation is concerned.
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