Treatment of Influenza in Elderly Patients with Renal Impairment

Antiviral Therapy

The Centers for Disease Control and Prevention recommends oseltamivir 75 mg once daily for patients with creatinine clearance 10-30 mL/min, which is a reduced dose from the standard 75 mg twice daily 1, 2
For a patient with a GFR of 47 mL/min, the dose reduction is necessary to prevent drug accumulation and toxicity 1
Treatment with oseltamivir should be initiated as soon as possible, ideally within 48 hours of symptom onset, and the standard treatment duration is 5 days 3, 1
The American Academy of Family Physicians suggests that zanamivir (inhaled) can be used at the standard dose of 10 mg (two inhalations) twice daily, without dose adjustment for renal impairment 1, 4, 2

The National Kidney Foundation recommends acetaminophen (paracetamol) for fever and body aches in patients with renal impairment, with a standard adult dosing of 650-1000 mg every 6 hours 6
The American College of Physicians advises to use NSAIDs cautiously in patients with renal impairment 7

The Centers for Disease Control and Prevention recommends close monitoring for adverse effects from antivirals in patients with any degree of renal insufficiency 1, 2
The National Institute on Aging suggests that elderly patients are particularly vulnerable to influenza complications, including renal dysfunction 1, 2

The American Geriatrics Society warns against using standard oseltamivir dosing (75 mg twice daily) in patients with GFR <50 mL/min, as it leads to drug accumulation and increased toxicity risk 1, 2
The Infectious Diseases Society of America recommends initiating antiviral treatment as soon as possible, ideally within 48 hours of symptom onset, but not withholding antivirals in severely ill elderly patients even if presenting beyond 48 hours 3, 1

The Centers for Disease Control and Prevention recommends that the patient wear a surgical mask to prevent droplet transmission to others, and emphasizes hand hygiene and environmental cleaning 8