• Dimitry S Davydow, Sanjay V Desai, Dale M Needham, and O Joseph Bienvenu.
• Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. ddavydo1@u.washington.edu
• Psychosom Med. 2008 May 1;70(4):512-9.

ObjectiveAcute lung injury (ALI), including its more severe subcategory, acute respiratory distress syndrome (ARDS), is a critical illness associated with considerable morbidity and mortality. Our objective was to summarize data on the prevalence of depressive, posttraumatic stress disorder (PTSD), and other anxiety syndromes amongst survivors of ALI/ARDS, potential risk factors for these syndromes, and their relationships to quality of life.MethodsWe conducted a systematic literature review using Medline, EMBASE, Cochrane Library, CINAHL, and PsycINFO. Eligible studies reported data on psychiatric morbidity at least once after intensive care treatment of ALI/ARDS.ResultsTen observational studies met inclusion criteria (total n = 331). Using questionnaires, the point prevalence of "clinically significant" symptoms of depression ranged from 17% to 43% (4 studies); PTSD, 21% to 35% (4 studies); and nonspecific anxiety, 23% to 48% (3 studies). Studies varied in terms of instruments used, thresholds for clinical significance, baseline psychiatric history exclusions, and timing of assessments (range = 1 month to 8 years). Psychiatrist-diagnosed PTSD prevalence at hospital discharge, 5 years, and 8 years were 44%, 25%, and 24%, respectively. Three studies prospectively assessed risk factors for post-ALI/ARDS PTSD and depressive symptoms; significant predictors included longer durations of mechanical ventilation, intensive care unit stay, and sedation. All four studies that examined relationships between psychiatric symptoms and quality of life found significant negative associations.ConclusionsThe prevalence of psychiatric morbidity in patients surviving ARDS seems high. Future research should incorporate more in-depth diagnostic and risk factor assessments for prevention and monitoring purposes.

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