• Lieke Maria Koggel, Marten Alexander Lantinga, Frederike Leonie Büchner, Joost Paulus Hubertus Drenth, Jacqueline Sarah Frankema, Edwin Johannes Heeregrave, Mette Heringa, Mattijs Everard Numans, and Peter Derk Siersema.
• Department of Gastroenterology and Hepatology, Radboud University Medical Centre, Nijmegen.
• Br J Gen Pract. 2022 Dec 1; 72 (725): e899e906e899-e906.

BackgroundProton pump inhibitor (PPI) indications are limited to gastrointestinal disorders and ulcer prophylaxis. However, PPIs are among the most frequently prescribed drugs.AimTo evaluate the appropriateness of PPI prescriptions and identify predictive factors for inappropriate PPI use.Design And SettingObservational study using a Dutch primary care database with all new PPI prescriptions between 2016 and 2018.MethodIndividual patient data and details on PPI use were collected. The appropriateness of initiation and continuation of PPI prescriptions was evaluated using the applicable guidelines.ResultsIn total, 148 926 patients (aged ≥18 years) from 27 general practices were evaluated. A total of 23 601 (16%) patients started PPI therapy (mean age 57 [SD 17] years, 59% female). Valid PPI indications at initiation were seen in 10 466 PPI users (44%). Predictors for inappropriately initiated PPI use were older age (odds ratio [OR] 1.03, 95% confidence interval [CI] = 1.03 to 1.03), and use of non-selective non-steroidal anti-inflammatory drugs (OR 5.15, 95% CI = 4.70 to 5.65), adenosine diphosphate receptor inhibitors (OR 5.07, 95% CI = 3.46 to 7.41), COX-2 inhibitors (also known as coxibs) (OR 3.93, 95% CI = 2.92 to 5.28), and low-dose aspirin (OR 3.83, 95% CI = 3.07 to 4.77). Despite an initial valid indication, PPI use was inaccurately continued in 32% of patients on short-course therapy for dyspepsia and in 11% of patients on ulcer prophylaxis.ConclusionMore than half of PPI users in primary care were found to have an inappropriate indication, with unnecessary ulcer prophylaxis related to drug use being one of the leading causes. Future initiatives to reduce PPI use for unnecessary ulcer prophylaxis and timely deprescription if PPI is no longer indicated, are needed.© The Authors.

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