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Perhimpunan Dokter Paru Indonesia - Microbiology and radiology of pneumonia in COPD
 
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Microbiology and radiology of pneumonia in COPD

Lydia Finney1, Sarah Elkin2, Samuel Todd2, Vijay Padmanaban2 and Patrick Mallia1,2
1National Heart and Lung Institute, Imperial College, London, United Kingdom, 2Respiratory Medicine, Imperial College Health Care NHS Trust, London, United Kingdom

 

Background: Pneumonia is associated with increased morbidity and mortality in COPD. We aimed to characterise the infectious aetiology and radiology of pneumonia in COPD and identify potential risk factors.

Methods: Retrospective analysis of medical records for patients with COPD (FEV1/FVC <0.70) admitted to 3 London hospitals between 01/01/2010 and 31/12/2012 with pneumonia or exacerbation (AECOPD). Patients were identified by COPD bundles. Admission CXRs were assessed by 2 independent observers. Pneumonia was defined as new consolidation on CXR.


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Results:
There were 235 pneumonia admissions and 706 for AECOPD. 43% of patients with radiological diagnosis of pneumonia had a diagnosis of pneumonia on their discharge summary. Patients admitted with pneumonia were more likely to have had a previous admission with pneumonia in the last year (21% v 6% p<0.01, RR 3.5) and be age ≥ 75 years (50% vs 36% p=0.01, RR 1.58). There was no difference between pneumonia and AECOPD for mean FEV1 % predicted (40 +/- 18 v 41 +/- 19) or proportion of patients using inhaled corticosteroids (79% v 83%).

Gram negative organisms were identified in 21% of pneumonias and 13% of exacerbations. The most commonly isolated organism was Pseudomonas aeruginosa (7% of pneumonia, 5% of AECOPD). 44% of pneumonias were lobar, 42% multifocal and 13% bibasal.

Conclusions: Incidence of pneumonia in COPD is likely to be underestimated. The most commonly isolated bacteria were gram negatives which may not respond to current antibiotic guidelines for community acquired pneumonia. Risk factors for pneumonia are previous history of pneumonia and age≥ 75 years.

Sumber : http://erj.ersjournals.com/content/46/suppl_59/PA637



PDPI Lampung & Bengkulu. 08/03/18.




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