The Use of Proton Pump Inhibitors in Patients Aged 65 Years and Above in an Academic Tertiary Referral Hospital

Abstract Background Proton Pump inhibitors (PPIs) are some of the world's most frequently prescribed medications. While PPIs are generally well tolerated, they do carry with them several associated adverse effects ranging from electrolyte disturbances to altering the absorption and thus the effectiveness of other co-administered medications to more severe concerns such as high frequencies of gastrointestinal infections and possibly even respiratory tract infections. Being so commonly prescribed, often for inappropriate or unknown indications, they become an important and relatively easy target for review. Methods A retrospective review of electronic health care records of individuals aged 65 years and older admitted under general medical teams in an academic tertiary referral hospital over the course of a calendar month was undertaken to evaluate typical PPI usage encountered, including frequency of PPI prescriptions at both admission and discharge, recorded indications, and impact of review by clinical pharmacists. Results Of the 77 individuals included in this study, 59 (77%) were prescribed a PPI at some point during admission. Of the patients surviving to discharge, 98% (n = 53) remained on a PPI at discharge. One patient (2%) had a PPI stopped before discharge. Indications for a PPI were explicitly stated in 25% (n = 15) of patients prescribed a PPI. A further 27% (n = 16) could have an indication derived from information within the electronic health record. One (2%) patient was prescribed a PPI, and a duration was indicated. Conclusion Most PPI prescriptions lack documentation regarding the indication and intended duration and may be inappropriately prescribed. The frequency of usage of PPIs in an older population that is more at risk of the adverse effects of PPIs makes them ideal targets and models for evaluation of prescribing practices and deprescribing efforts.