West Resp Chap9- Respiratory system under stress

Question 1

Hazards of O2 (100%)toxicity?

Answer 1

1. pulmonary edema
2. absorption atelectasis
3. premature infants develop blindness because of retrolental fibroplasia due to local vasoconstriction caused by the high Po2.

Question 2

absorption atelectasis due to O2 toxicity?

Answer 2

1. the sum of the partial pressures in the alveolar gas greatly exceeds that in the venous blood
2. gas diffuses into the blood, and rapid collapse of the alveoli occurs.