Abstract
Purpose
The increased use of proton pump inhibitors (PPIs) in the elderly has raised concerns about potential severe adverse effects. Our systematic review investigated the mortality associated with PPI use in elderly populations.
Methods
We searched MEDLINE, EMBASE, and the Cochrane Library for relevant publications until August 2022. We included randomized controlled trials (RCTs), quasi-RCTs, and observational studies on the association between proton pump inhibitors and mortality in the elderly. To estimate the pooled relative risk (RR) and 95% confidence interval (CI), the inverse-variance random effect model was used. Heterogeneity was assessed using the I2 test. Subgroup analyses were performed by follow-up period, population, and study design.
Results
A total of 4 RCTs and 36 cohort studies were included in the meta-analysis. Four RCTs showed that there was no significant association between PPIs and the risk of death. From 23 observational studies (26 cohorts), the use of proton pump inhibitors was not significantly associated with increased mortality in the elderly (RR 1.14; 95% CI, 0.90–1.45). However, when controlling for covariates from 33 observational studies (41 cohorts), proton pump inhibitors in older adults aged 50 years or more were significantly associated with a 15% higher risk of mortality compared to nonusers (RR 1.15; 95% CI, 1.10–1.20).
Conclusions
Our meta-analysis of RCTs found that PPIs did not show a significant association with increased mortality risk in older adults. However, the meta-analysis of cohort studies and long-term follow-up studies showed a higher increased risk of death with PPI use in older adults. The prescription of PPIs in patients aged 50 years or older should be carefully considered.
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Data availability
The datasets generated during the current study are available from the corresponding author on reasonable request.
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Funding
This work was supported by the Postdoctoral Research Program of Sungkyunkwan University (2017).
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HJS was involved in study concept and design, literature search, data extraction, data analysis, data interpretation, and manuscript writing. HJS was involved in data interpretation and manuscript writing. XJ was involved in literature search, data extraction, and data interpretation. NJ, YJL, and IHH were involved in literature search and data interpretation. All authors reviewed and approved the final version.
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Key points
• Little is known about the excess risk of death associated with proton pump inhibitor use in the elderly.
• We conducted a systematic review and meta-analysis of randomized controlled trials and observational studies regarding the association between proton pump inhibitors and the risk of death in adults aged 50 years or older.
• Our meta-analysis found a 15% increased risk of death in elderly people with PPI use compared to nonusers. Longer follow-up and cohort studies revealed an increased risk of death among older patients with cancers, cardiovascular disease, and kidney disease.
• Awareness of the increased mortality with PPI use should be raised, and the need to limit PPI prescriptions to the elderly where the benefits outweigh the potential risks should be emphasized.
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Song, H.J., Seo, HJ., Jiang, X. et al. Proton pump inhibitors associated with an increased risk of mortality in elderly: a systematic review and meta-analysis. Eur J Clin Pharmacol 80, 367–382 (2024). https://doi.org/10.1007/s00228-023-03606-0
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DOI: https://doi.org/10.1007/s00228-023-03606-0