Current guidelines suggest using vancomycin-loading doses for complicated infections despite a lack of evidence to support this practice. To address this gap, we performed a single-centre cohort study of 124 patients with sepsis due to methicillin-resistant Staphylococcus aureus bacteremia. Patients were allocated into two groups based on initial dose of vancomycin, <20 mg/kg or ≥20 mg/kg, and evaluated for time to resolution of systemic inflammatory response syndrome (SIRS). Among a cohort of 124 patients, 87 received vancomycin initial doses <20 mg/kg and 37 received ≥20 mg/kg. The median time to SIRS resolution was 109 h in the <20 mg/kg group compared to 67 h in the ≥20 mg/kg group. Cox proportional hazard modelling showed a faster resolution of SIRS in the ≥20 mg/kg group (HR = 1.72[1.09-2.73]). Vancomycin initial doses of ≥20 mg/kg led to faster resolution of SIRS although further studies are needed to evaluate the safety and efficacy of this approach.
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