Effects of Prolonged Proton-Pump Inhibitor Use on Renal Dysfunction and Bone Fragility: A Retrospective Study.

Background: Proton-pump inhibitor (PPI) use for management of gastroesophageal reflux disease (GERD) consists of a short-duration trial, according to guidelines. Long-term usage is appropriate under certain indications. Literature has increasingly documented an adverse effect profile of PPIs, including kidney disease and bone fragility.

Objective: To investigate the rate of occurrence of osteopenia, osteoporosis, and chronic kidney disease (CKD) in patients using PPI therapy for longer than the recommended trial period of 8 weeks.

Methods: Retrospective cohort analysis of a single-site primary care clinic. Patients aged 18 to 65 years with PPI prescriptions longer than 8 weeks were included. Information regarding PPI prescriptions, demographics, and medical diagnoses was collected.

Results: The search discovered 293 PPI-users and 1908 never-PPI-users. Demographics varied, with a P-value <0.05 in age, body mass index (BMI), and black population (higher in PPI group). The PPI cohort featured higher rates of osteoporosis/osteopenia and CKD (P < 0.001). The odds ratios (ORs) of diagnosis with PPI use was 2.91 (95% CI = [1.692, 4.979]) in osteoporosis/osteopenia. The OR was 1.14 (95% CI = [1.141, 2.229]) in CKD and PPI use but higher with diabetes, elevated BMI, black race, and male gender.

Conclusions and relevance: We observed increased occurrence rates of osteoporosis, or osteopenia, and CKD in patients with prolonged PPI use. Demographics varied in age, BMI, and black race proportion. A logistic regression revealed increased likelihood of kidney disease and osteoporosis/osteopenia in association with PPI use. These results add to the evidence regarding long-term PPI use and the development of these conditions, but additional studies are needed.