Pregabalin Use in Elderly Patients

Renal Function Considerations

Elderly patients experience age-related decline in renal function of approximately 1% per year after age 30-40, meaning by age 70, renal function may be substantially reduced 1
Serum creatinine alone is insufficient for assessing renal function in elderly patients due to reduced muscle mass masking true renal impairment 1
Calculate creatinine clearance using the Cockcroft-Gault equation or CKD-EPI Cr-cystatin C equation before initiating pregabalin 1, 2

Cognitive impairment increases risk for medication errors and makes pregabalin-related confusion more dangerous 5
Elderly patients with cognitive impairment have increased susceptibility to accumulation of pregabalin and a smaller therapeutic window between safe dosages and those associated with adverse effects 5

Elderly patients commonly receive multiple medications, increasing risk of drug-drug interactions 6, 5
The incidence of drug-drug interactions increases dramatically with polypharmacy: 10.9% with 2-4 drugs and 80.8% with ≥10 drugs 6

Implement fall risk assessment and prevention strategies when prescribing pregabalin 5
Monitor blood pressure in both supine and standing positions to detect orthostatic hypotension 2

Patients with renal or hepatic insufficiency require additional caution and increased monitoring due to decreased drug processing and excretion 5
Prescription of potentially inappropriate medications is particularly frequent in individuals with multimorbidity, disability, polypharmacy, poor functional or mental status, and renal impairment 6
Mental health conditions including depression and anxiety increase risk for adverse outcomes with pregabalin 5