2- Pulmonary damage (toxicity) High partial pressure of oxygen (PaO2) can damage capillary endothelium in the lungs causing interstitial edema and increase alveolar-capillary membrane permeability. Later on, patient may develop pulmonary arterial hypertension. Acute tracheobronchitis may be the earliest manifestation of oxygen toxicity, generally appearing after 4 to 22 hours of breathing 100% oxygen at one atmospheric pressure. Diffuse alveolar damage (DAD) develops soon thereafter, starting after 48 hours of inspiring FiO2 greater than 60%. With prolonged hyperoxia, ARDS-like changes are observed at the alveolar level and capillary endothelial damage takes place resulting in interstitial edema. The long-term effects of oxygen toxicity are similar to those of ARDS with pulmonary fibrosis, emphysema and worsening gas exchange being the end-result.ترجمة وشرح كل جملة
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"High partial pressure of oxygen (PaO2) can damage capillary endothelium in the lungs causing interstitial edema and increase alveolar-capillary membrane permeability."
"Later on, patient may develop pulmonary arterial hypertension."
"Acute tracheobronchitis may be the earliest manifestation of oxygen toxicity, generally appearing after 4 to 22 hours of breathing 100% oxygen at one atmospheric pressure."
"Diffuse alveolar damage (DAD) develops soon thereafter, starting after 48 hours of inspiring FiO2 greater than 60%."
"With prolonged hyperoxia, ARDS-like changes are observed at the alveolar level and capillary endothelial damage takes place resulting in interstitial edema."
"The long-term effects of oxygen toxicity are similar to those of ARDS with pulmonary fibrosis, emphysema and worsening gas exchange being the end-result."
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