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Vancomycin AUC Adjustment — SCE Infectious Diseases MCQ

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HardAntimicrobial StewardshipVancomycin AUC AdjustmentSCE Infectious Diseases

A patient receiving intravenous vancomycin for MRSA bacteraemia has worsening renal function and concentrations above the local exposure target. What is the safest dosing response?

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Correct answer: A — Hold or reduce vancomycin according to measured exposure, renal trajectory and specialist pharmacy advice, then remeasure before further dosing after susceptibility review

The best answer is “Hold or reduce vancomycin according to measured exposure, renal trajectory and specialist pharmacy advice, then remeasure before further dosing after susceptibility review”. Vancomycin clearance falls with renal dysfunction; concentration-guided individualisation reduces toxicity while preserving effective treatment. “Increase the dose because renal impairment lowers exposure” is less appropriate because it conflicts with the clinical discriminator or cited guidance. “Switch to oral vancomycin for bloodstream infection” is less appropriate because it conflicts with the clinical discriminator or cited guidance. “Continue unchanged because concentration monitoring is optional” is less appropriate because it conflicts with the clinical discriminator or cited guidance. “Add gentamicin to overcome vancomycin accumulation” is less appropriate because it conflicts with the clinical discriminator or cited guidance.

Reference: Vancomycin 500 mg SmPC: https://www.medicines.org.uk/emc/product/8759/smpc