• S Y Low, T T Tan, C H K Lee, C M Loo, and H C Chew.
• Department of Respiratory and Critical Care Medicine, Singapore General Hospital, Singapore. Electronic address: low.su.ying@sgh.com.sg.
• Respir Med. 2013 Nov 1;107(11):1810-3.

IntroductionAdenovirus causing severe fatal pneumonia has been well described in infants, children, and patients with immunocompromised function, but reports in previously healthy adults are rare. We report 3 cases of severe adenovirus pneumonia in whom conventional mechanical ventilation failed and required extracorporeal membrane oxygenation support.MethodsRetrospective case records review of 3 patients admitted to the medical intensive care unit, Singapore General Hospital, a tertiary care university-affiliated hospital, with severe adenovirus pneumonia requiring extracorporeal membrane oxygenation support from February to March 2013.ResultsAll 3 patients were previously healthy immunocompetent adults from the community with negative HIV serology. Duration prior to development of respiratory failure requiring intubation and invasive mechanical ventilation was 2, 8 and 3 days. Veno-venous extracorporeal membrane oxygenation (ECMO) support as rescue ventilation was instituted in all 3 patients after 2, 16, and 5 days of conventional mechanical ventilator support. Duration on ECMO support was 16, 22, and 9 days and mechanical ventilation was 18, 62, and 19 days respectively. Length of stay in intensive care unit was 18, 68, and 21 days, and length of stay in hospital was 20, 70, and 31 days respectively. Two of the 3 patients died.ConclusionThe mainstay of treatment for patients with severe adenovirus pneumonia is still supportive, with the use of antivirals not apparently effective. Whilst ECMO support for rescue ventilation may be considered, the outcomes do not appear as promising as other viral pneumonias, mirroring that previously described in the paediatric population.Copyright © 2013 Elsevier Ltd. All rights reserved.

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