Respiratory Nitric Oxide and Pulmonary Artery Pressure in Children of Aymara and European Ancestry at High Altitude.

The article examines respiratory nitric oxide (NO) and pulmonary artery pressure in children of Aymara and European ancestry at high altitude. The hypothesis indicate that pulmonary artery pressure will be lower in Aymara children than in children of European ancestry at high altitude. The results indicate that Aymara children are protected from hypoxic pulmonary hypertension at high altitude, which does not appear to be related to increased respiratory NO synthesis.