exposure of adult rats to greater than 95 % o2 for 48 h followed by a rest in air , or a rest even in 50-75 % o2 , consistently resulted in 100 % survival with evidence of only slight pulmonary edema during continuation of exposure to greater than 95 % o2 for 3-7 more days ( 7-day survival for rats rested in room air for 24 h = 23/23 ; for rats rested in 50-75 % o2 for 24 h = 27/27 ; for continuously o2-exposed control rats = 0/11 ) .
C0034063
pulmonary edema
C0030054
o2