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Updated: Apr 21, 2026

Quantifying the Cytotoxicity of Staphylococcus aureus Against Human Polymorphonuclear Leukocytes
Published on: January 3, 2020
[Analysis of serum vancomycin concentration after administration of different doses in children with Staphylococcus
Guang-Li Zhang1, Hui Zhamg, Ru Liu
1Department of Respiratory Disease, Children′s Hospital, Chongqing Medical University, Chongqing 400014, China. luozhengxiu816@163.com.
Insights
A dosage of 15 mg/(kg·dose) every 6 hours (q6h) of vancomycin is recommended for pediatric Staphylococcus aureus pneumonia (SAP). This dose achieved higher serum vancomycin trough concentrations compared to lower doses, improving treatment efficacy.
Area of Science:
- Pediatric Infectious Diseases
- Pharmacokinetics and Pharmacodynamics
- Antibiotic Therapy
Context:
- Staphylococcus aureus pneumonia (SAP) is a serious infection in children.
- Vancomycin is a critical antibiotic for treating resistant bacterial infections.
- Optimizing vancomycin dosing is essential for effective treatment and minimizing toxicity.
Purpose:
- To determine the appropriate vancomycin dosage for pediatric patients with Staphylococcus aureus pneumonia (SAP).
- To analyze serum vancomycin concentrations at different therapeutic doses.
- To correlate dosage with achieving target serum trough concentrations.
Summary:
- Retrospective analysis of 35 pediatric SAP cases treated with vancomycin.
- Evaluated vancomycin doses of 10, 12.5, and 15 mg/(kg·dose) every 6 hours (q6h).
- The 15 mg/(kg·dose) q6h dose resulted in significantly higher mean serum trough concentrations (14.98 mg/L) and a higher percentage of patients reaching therapeutic targets (71%) compared to lower doses.
Impact:
- Establishes 15 mg/(kg·dose) q6h (or 60 mg/(kg·d)) as a reasonable vancomycin dosage for pediatric SAP.
- Provides evidence-based guidance for optimizing vancomycin therapy in children.
- Aims to improve treatment outcomes and reduce the risk of treatment failure or adverse events.
Objective:
To analyze serum vancomycin concentration after administration of different therapeutic doses in children with Staphylococcus aureus pneumonia (SAP) in order to determine the appropriate dose of vancomycin in clinical administration.
Methods:
The clinical data of 35 children who were diagnosed with SAP and treated with vancomycin from January 2008 to December 2013 were retrospectively analyzed.
Results:
Among the 35 SAP cases with vancomycin therapy, 22 cases (63%) had serum vancomycin trough concentration monitored. The numbers of cases with vancomycin at 10, 12.5, and 15 mg/(kg·dose) × every 6 hours (q6h) were 11, 4 and 7, respectively. The mean serum trough concentration of vancomycin in the 15 mg/(kg·dose) group was 14.98 mg/L, which was significantly higher than in the 10 mg/(kg·dose) and 12.5 mg/(kg·dose) groups (4.97 and 8.00 mg/L respectively; P<0.05). The percentage of cases that reached the expected trough concentration in the 15 mg/(kg·dose) group (71%) was significantly higher than that in the 10 mg/(kg·dose) group (9%), but there was no significant difference in this percentage between the 15 mg/(kg·dose) and 12.5 mg/(kg·dose) groups (71% vs 25%).
Conclusions:
The reasonable dosage of vancomycin for the treatment of pediatric SAP is 15 mg/(kg·dose) × q6h or 60 mg/(kg·d).
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