Journal
ALIMENTARY PHARMACOLOGY & THERAPEUTICS
Volume 42, Issue 5, Pages 607-613Publisher
WILEY-BLACKWELL
DOI: 10.1111/apt.13304
Keywords
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Funding
- AstraZeneca RD
- AstraZeneca R&D, Molndal, Sweden
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BackgroundDebate continues on whether a causal association exists between the use of proton pump inhibitors (PPIs) and the risk of respiratory tract infections, in particular pneumonia. AimTo investigate the occurrence of community-acquired respiratory tract infections, including pneumonia, in patients receiving esomeprazole. MethodA retrospective investigation of pooled data on adverse events related to respiratory tract infections, originally reported in 24 randomised, double-blind clinical studies, was conducted. The frequencies of respiratory tract infections and their relative risks were calculated retrospectively for the total patient population (9602 patients receiving esomeprazole and 5500 receiving placebo) and for sub-populations defined according to sex, age, esomeprazole dose, indication and geographical region. The cumulative frequency of first occurrence of events was calculated over 180days. ResultsFrequencies of respiratory tract infections were similar in patients receiving esomeprazole and in those receiving placebo (any respiratory tract infection or signs/symptoms potentially indicating an respiratory tract infection, 0.278 and 0.296 patients per patient-year; lower respiratory tract infections, 0.048 and 0.058per patient-year; pneumonia, 0.006 and 0.009 per patient-year, respectively). The relative risk for any respiratory tract infection in patients receiving esomeprazole compared with placebo was 0.94 (95% CI, 0.86-1.04). For lower respiratory tract infections, the relative risk was 0.82 (95% CI, 0.65-1.03) and for pneumonia, 0.66 (95% CI, 0.36-1.22). Sub-analyses by demographics, dose and indication yielded similar results to the overall analysis. The occurrence of respiratory tract infections was evenly distributed over time and similar in the esomeprazole and placebo groups. ConclusionThere is no causal association between treatment with esomeprazole and the occurrence of community-acquired respiratory tract infections, including pneumonia.
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