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Psychiatric symptoms after acute respiratory distress syndrome: a 5-year longitudinal study. PURPOSE: We aimed to characterize anxiety, depression, and posttraumatic stress disorder (PTSD) symptoms over 5-year follow-up after acute respiratory distress syndrome (ARDS) and determine risk factors for prolonged psychiatric morbidity. METHODS: This prospective cohort study enrolled patients from 13 medical and surgical intensive care units in four hospitals, with follow-up at 3, 6, 12, 24, 36, 48, and 60 months post-ARDS. Trained research staff administered the Hospital Anxiety and Depression Scale (HADS) (scores ≥ 8 on anxiety and depression subscales indicating substantial symptoms) and the Impact of Event Scale-Revised (IES-R, scores ≥ 1.6 indicating substantial PTSD symptoms) at each follow-up visit. RESULTS: Of 196 consenting survivors, 186 (95%) completed HADS and IES-R assessments; 96 (52%) had any continuous or recurring (prolonged) symptoms, and 71 (38%), 59 (32%), and 43 (23%) had prolonged anxiety, depression, and PTSD symptoms, respectively (median total durations 33-39 months, 71-100% of observed follow-up time). Prolonged psychiatric symptoms tended to co-occur across domains; the most common morbidity pattern involved substantial symptoms in all three domains. Worse pre-ARDS mental health, including prior depression and psychological distress in the period immediately preceding ARDS, was strongly associated with prolonged post-ARDS psychiatric morbidity across symptom domains. CONCLUSIONS: Clinically significant and long-lasting symptoms of anxiety, depression, and PTSD are common in the first 5 years after ARDS. In-hospital screening of psychiatric history, including recent anxiety and depression symptoms, may be useful for long-term mental health treatment planning after ARDS.