[Proton-pump inhibitor use and hyponatremia]

Area of Science:

• Geriatric Medicine
• Pharmacology
• Clinical Chemistry

Context:

• Proton-pump inhibitors (PPIs) are frequently prescribed for long-term use in geriatric healthcare facilities.
• Older adults in long-term care are susceptible to hyponatremia due to multifactorial causes.
• The study investigates the specific risk of hyponatremia associated with PPIs in this vulnerable population.

Purpose:

• To test the hypothesis that nursing home residents receiving PPIs are more likely to develop hyponatremia.
• To compare serum sodium levels between nursing home residents using PPIs (specifically lansoprazole) and a control group.
• To assess the effect of lansoprazole discontinuation on serum sodium levels.

Summary:

• Nursing home residents using lansoprazole for over six months exhibited lower blood sodium levels and a higher prevalence of hyponatremia compared to a control group.
• No significant differences in other blood parameters were observed between the groups.
• Serum sodium levels increased significantly one month after lansoprazole discontinuation but remained below control levels.

Impact:

• This study highlights a potential adverse effect of long-term lansoprazole use in elderly individuals residing in long-term care facilities.
• Findings suggest a need for careful monitoring of electrolytes, particularly sodium, in elderly patients on prolonged PPI therapy.
• The results may inform clinical practice guidelines regarding PPI prescription and monitoring in geriatric populations.