CUTE LUNG INJURY AND ACUTE respiratory distress syndrome (ARDS, the most severe form of acute lung injury), are potentially devastating complications of critical illness. 1 Arising in response to direct lung injury (eg, pneumonia) or intense systemic inflammation (eg, sepsis), 2 the pathogenesis involves pulmonary edema, diffuse cellular destruction, alveolar collapse, and disordered repair. Mortality and health care costs are high, 3 and long-term survivors experience serious morbidity. 4 See also pp 646, 691, and 693.

In adults with moderate-to-severe ARDS, early application of HFOV, as compared with a ventilation strategy of low tidal volume and high positive end-expiratory pressure, does not reduce, and may increase, in-hospital mortality. (Funded by the Canadian Institutes of Health Research; Current Controlled Trials numbers, ISRCTN42992782 and ISRCTN87124254, and ClinicalTrials.gov numbers, NCT00474656 and NCT01506401.).

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