Meropenem Dosing in Adults with Impaired Renal Function

Special Considerations for Dialysis Patients

• For patients on SLED, the American Thoracic Society recommends maintaining the full 1 gram dose every 12 hours rather than reducing individual doses below 1 gram 1

Therapeutic Drug Monitoring

• The American College of Clinical Pharmacy recommends target trough concentrations to remain below 64 mg/L to prevent neurological toxicity, particularly in critically ill patients with renal impairment 1

Critical Pitfalls to Avoid

• The Infectious Diseases Society of America advises against reducing individual doses below 1 gram when treating serious infections, even in renal impairment, and instead recommends extending the dosing interval, with consideration of extended infusion or continuous infusion for infections caused by organisms with MIC ≥4 mg/L 1

Meropenem Dosing in Renal Impairment

Pharmacokinetic Considerations

• The half-life of meropenem increases significantly with declining renal function, with a half-life of approximately 1 hour in patients with normal renal function 2
• Maintaining the standard dose per administration when possible, while extending the dosing interval, is recommended to take advantage of the concentration-dependent bactericidal effect, as suggested by the Clinical Infectious Diseases guideline 2