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Long term outcomes in survivors of epidemic Influenza A (H7N9) virus infection.

Long term outcomes in survivors of epidemic Influenza A (H7N9) virus infection.
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Chen J, Wu J, Hao S, Yang M, Lu X, Chen X, Li L,


Chen J, Wu J, Hao S, Yang M, Lu X, Chen X, Li L, (click to view)

Chen J, Wu J, Hao S, Yang M, Lu X, Chen X, Li L,

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Scientific reports 2017 12 087(1) 17275 doi 10.1038/s41598-017-17497-6
Abstract

Patients who survive influenza A (H7N9) virus infection are at risk of physical and psychological complications of lung injury and multi-organ dysfunction. However, there were no prospectively individualized assessments of physiological, functional and quality-of-life measures after hospital discharge. The current study aims to assess the main determinants of functional disability of these patients during the follow-up. Fifty-six influenza A (H7N9) survivors were investigated during the 2-year after discharge from the hospital. Results show interstitial change and fibrosis on pulmonary imaging remained 6 months after hospital discharge. Both ventilation and diffusion dysfunction improved, but restrictive and obstructive patterns on ventilation function test persisted throughout the follow-up period. For patients with acute respiratory distress syndrome lung functions improved faster during the first six months. Role-physical and Role-emotional domains in the 36-Item Short-Form Health Survey were worse than those of a sex- and age-matched general population group. The quality of life of survivors with ARDS was lower than those with no ARDS. Our findings suggest that pulmonary function and imaging findings improved during the first 6 months especially for those with ARDS, however long-term lung disability and psychological impairment in H7N9 survivors persisted at 2 years after discharge from the hospital.

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