Aspiration Risk Factors, Microbiology, and Empiric Antibiotics for Patients Hospitalized With Community-Acquired Pneumonia
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
- Department of Internal Medicine I
- Hospital del Mar
- University of Texas Health Science Center at San Antonio
- CIBER - Center for Biomedical Research Network
- University of Milan
- Autonomous University of Barcelona
- Universidad Rovira i Virgili
- University of Barcelona
- Hospital General Universitario de Valencia
- University of Sassari
- Sotiria General Hospital
- Sant'Andrea Hospital
- St. Antonius Hospital
Abstract
Background: Aspiration community-acquired pneumonia (ACAP) and community-acquired pneumonia (CAP) in patients with aspiration risk factors (AspRFs) are infections associated with anaerobes, but limited evidence suggests their pathogenic role. Research Question: What are the aspiration risk factors, microbiology patterns, and empiric anti-anaerobic use in patients hospitalized with CAP? Study Design and Methods: This is a secondary analysis of GLIMP, an international, multicenter, point-prevalence study of adults hospitalized with CAP. Patients were stratified into three groups: (1) ACAP, (2) CAP/AspRF+ (CAP with AspRF), and (3) CAP/AspRF- (CAP without AspRF). Data on demographics, comorbidities, microbiological results, and anti-anaerobic antibiotics were analyzed in all groups. Patients were further stratified in severe and nonsevere CAP groups. Results: We enrolled 2,606 patients with CAP, of which 193 (7.4%) had ACAP. Risk factors independently associated with ACAP were male, bedridden, underweight, a nursing home resident, and having a history of stroke, dementia, mental illness, and enteral tube feeding. Among non-ACAP patients, 1,709 (70.8%) had CAP/AspRF+ and 704 (29.2%) had CAP/AspRF-. Microbiology patterns including anaerobes were similar between CAP/AspRF-, CAP/AspRF+ and ACAP (0.0% vs 1.03% vs 1.64%). Patients with severe ACAP had higher rates of total gram-negative bacteria (64.3% vs 44.3% vs 33.3%, P =.021) and lower rates of total gram-positive bacteria (7.1% vs 38.1% vs 50.0%, P <.001) when compared with patients with severe CAP/AspRF+ and severe CAP/AspRF-, respectively. Most patients (>50% in all groups) independent of AspRFs or ACAP received specific or broad-spectrum anti-anaerobic coverage antibiotics. Interpretation: Hospitalized patients with ACAP or CAP/AspRF+ had similar anaerobic flora compared with patients without aspiration risk factors. Gram-negative bacteria were more prevalent in patients with severe ACAP. Despite having similar microbiological flora between groups, a large proportion of CAP patients received anti-anaerobic antibiotic coverage.
Details
Original language | English |
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Pages (from-to) | 58-72 |
Number of pages | 15 |
Journal | Chest |
Volume | 159 |
Issue number | 1 |
Publication status | Published - Jan 2021 |
Peer-reviewed | Yes |
External IDs
PubMed | 32687909 |
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ORCID | /0000-0001-6022-6827/work/168720332 |
Keywords
Sustainable Development Goals
ASJC Scopus subject areas
Keywords
- anaerobic, aspiration, bacteria, pneumonia, risk factors