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Chest radiography findings in adults with pandemic H1N1 2009 influenza.

McEwen, R E and Scriven, J E and Green, C A and Bailey, M S and Banerjee, A K (2010) Chest radiography findings in adults with pandemic H1N1 2009 influenza. The British journal of radiology, 83 (990). pp. 499-504. ISSN 1748-880X.

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Official URL: http://bjr.birjournals.org/content/83/990.toc

Abstract

The current pandemic of a novel influenza A (H1N1) virus, commonly referred to as "swine flu", began in Mexico in March 2009 and reached the UK in April 2009. By 21 July 2009, more than 850 suspected cases of influenza had been seen at Birmingham Heartlands Hospital (BHH), including 52 adults with laboratory-confirmed pandemic H1N1 influenza who were admitted. Of seven patients (13%) requiring intensive care, six needed mechanical ventilation, two needed extra-corporeal membrane oxygenation (ECMO) and one died. Of the 52 admitted adults, 42 (81%) had respiratory symptoms or signs and positive PCR tests for novel Influenza A (H1N1) virus. These patients also had chest radiographs (CXR) taken, which were abnormal for 12 patients (29%). Of these, six patients had bilateral consolidation, which was bibasal in three and widespread in three; all six had pleural effusions. A further six patients had unilateral consolidation with predominantly basal changes; one of these patients had a pleural effusion. The odds ratio for requiring intubation and ventilation with H1N1 influenza and an abnormal CXR was 29.0 (95% confidence interval 2.93-287.0). CXR changes were not common in swine flu, but a significant minority of those requiring admission had consolidation on their CXR. Those who required admission and had CXR changes are more likely to require intubation and ventilation than those without abnormalities on CXR.

Item Type: Article
Subjects: WC Communicabable diseases
WN Medical imaging. Radiology
Divisions: Clinical Support > Infectious Diseases
Clinical Support > Radiology
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Depositing User: Sophie Rollason
Date Deposited: 10 May 2013 12:47
Last Modified: 10 May 2013 12:47
URI: http://www.repository.heartofengland.nhs.uk/id/eprint/28

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