Mortality in patients who develop ARDS is 30% to 50%. Death is most often due to multiple organ failure rather than purely to respiratory failure. Low tidal volume ventilation reduced in-hospital mortality from 40% to 31% in the 2000 ARDS Network trial. Being of a younger age may also increase the chances of survival. Patients who do survive their illness usually have some residual decrease in lung function, although it may not always cause symptoms. Muscle weakness, neuropathies, joint disorders, and chronic pain are also common in survivors of ARDS at 1 year.
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