Descending from the peaks: lower altitude eases lung pressure in high-altitude patients

This study looked at 24 people with high altitude pulmonary hypertension (HAPH) who live above 2,500 meters. Researchers measured their lung blood pressure at 3,200 meters and then after moving to 760 meters for one night and seven nights. The goal was to see if simply being at a lower altitude lowers the pressure in the lungs.