You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is ARDS is characterised by all except and explain in detail?
In ARDS the type1 pneumocytes and alveolar capillary endothelial cells are injured leading to the loss of normally tight alveolar barrier for fluid and macromolecules. Edema fluid rich in protein accumulates in alveolar spaces leading to decrease in compliance of lung. source : Harrison 20TH edition page 2032