Differences in Pharmaceutical Intervention Triggers for the Optimization of Medication by Patient Age: A University Hospital Study

Abstract

Optimization of medication therapy for the elderly is a matter of rapidly growing importance, which is addressed by pharmacists through comprehensive reviews. In this study, the impact of medication review by pharmacists on medication optimization and avoidance of adverse drug events (ADE) was investigated, as well as differences in the triggers for pharmaceutical intervention to allow for optimization of medication by patient age. Data for this study were collected from reports recorded between April 2013 and March 2019 for patients admitted to the Hiroshima University Hospital. In response to pharmacists' proposals, prescriptions were modified in 18932 cases, comprising 17% of the total 111479 patients during hospitalization. The frequency of such intervention was higher in elderly patients aged ≥65 years than in those <65 years (20 vs. 14%, p < 0.01). The reasons for pharmacists' intervention were primarily (67%) medication history or clinical symptoms in all age groups. Patient complaint was a minor reason in patients aged ≥75 years, accounting for only 2% of all interventions; laboratory results were a more typical reason, accounting for 24% of all interventions. These findings reveal the importance of pharmacists' interventions for optimizing medication and preventing ADEs, particularly in elderly patients. Thus, pharmacists must evaluate the medications and conditions, including laboratory results, in the medical records of elderly patients more carefully than those of younger patients as elderly patients might be unable to communicate about subjective symptoms.

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