He was descending alone suffering from pulmonary edema .
On October 13 , Zamora , Zapater and two Sherpas had to give up their attempt in order to help Mexican Carlos Carsolio down from 7300 meters .
Zamora was descending alone suffering from pulmonary edema .
On October 13 , Zamora , Zapater and two Sherpas had to give up their attempt in order to help Mexican Carlos Carsolio down from 7300 meters .