Details

Autor(en) / Beteiligte

• Tseng, Sheng-Hsuan
• Lim, Chuan Poh
• Chen, Qi
• Tang, Cheng Cai
• Kong, Sing Teang
• Ho, Paul Chi-Lui

Titel

Evaluating the Relationship between Vancomycin Trough Concentration and 24-Hour Area under the Concentration-Time Curve in Neonates

Ist Teil von

• Antimicrobial agents and chemotherapy, 2018-04, Vol.62 (4)

Ort / Verlag

United States: American Society for Microbiology

Erscheinungsjahr

2018

Quelle

EZB-FREE-00999 freely available EZB journals

Beschreibungen/Notizen

• Bacterial sepsis is a major cause of morbidity and mortality in neonates, especially those involving methicillin-resistant (MRSA). Guidelines by the Infectious Diseases Society of America recommend the vancomycin 24-h area under the concentration-time curve to MIC ratio (AUC /MIC) of >400 as the best predictor of successful treatment against MRSA infections when the MIC is ≤1 mg/liter. The relationship between steady-state vancomycin trough concentrations and AUC values (mg·h/liter) has not been studied in an Asian neonatal population. We conducted a retrospective chart review in Singapore hospitals and collected patient characteristics and therapeutic drug monitoring data from neonates on vancomycin therapy over a 5-year period. A one-compartment population pharmacokinetic model was built from the collected data, internally validated, and then used to assess the relationship between steady-state trough concentrations and AUC A Monte Carlo simulation sensitivity analysis was also conducted. A total of 76 neonates with 429 vancomycin concentrations were included for analysis. Median (interquartile range) was 30 weeks (28 to 36 weeks) for postmenstrual age (PMA) and 1,043 g (811 to 1,919 g) for weight at the initiation of treatment. Vancomycin clearance was predicted by weight, PMA, and serum creatinine. For MRSA isolates with a vancomycin MIC of ≤1, our major finding was that the minimum steady-state trough concentration range predictive of achieving an AUC /MIC of >400 was 8 to 8.9 mg/liter. Steady-state troughs within 15 to 20 mg/liter are unlikely to be necessary to achieve an AUC /MIC of >400, whereas troughs within 10 to 14.9 mg/liter may be more appropriate.