<正> Lung lymph fistula preparation was used to study the effectsof hypoxia and endotoxin on pulmonary pressor response andpulmonary fluid exchange in 9 conscious goats.The results suggestthat 1)the mechanism of pulmonary pressor response induced byhypoxia is somewhat different from that induced by endotxin

2)hypoxia（at a simulated altitude of 4

000 m for 5 hours）exertsno obvious effect on the pulmonary fluid filtration and pulmonaryvascular permeability for protein

and 3)alveolar hypoxia can notenhance the pulmonary injury induced by endotoxin.