Abstract
Background and Objective
Amikacin clearance has recently been proposed as a marker of renal maturation in neonates. However, the predictive value of this marker is still unknown. The objective of the present exploratory study was to evaluate the predictive performance of renal maturation model derived from amikacin to predict the glomerular filtration rate (GFR) and vancomycin clearance in neonates.
Methods
The GFR and vancomycin clearance in neonates were predicted using a maturation model derived from amikacin via estimation and simulation in a cohort of 116 neonates using non-linear mixed–effects modeling NONMEM® software.
Results
Our results demonstrate good correlations between predicted and observed GFR and vancomycin clearance in neonates. The square of the correlation coefficient, and means of the prediction error (2.5th–97.5th percentiles) and absolute prediction error (2.5th–97.5th percentiles) are 0.96, 1.2 % (−39.7 to 30.0 %) and 12.3 % (0.4–39.7 %), respectively, for GFR, and 0.97, −11.3 % (−38.2 to 15.4 %) and 14.0 % (0.5–38.2 %), respectively, for vancomycin. The prediction error is not significantly correlated with age.
Conclusion
An amikacin maturation model can precisely reflect maturation of glomerular filtration and thus predict the dosage regimens of other renally excreted drugs by glomerular filtration in neonates.
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Acknowledgments
This work was supported by “la Foundation PremUp” (Professor Danièle Evain Brion, France) and Global Research in Paediatrics—Network of Excellence (GRIP, EU-funded FP7 project, Grant Agreement number 261060).
The authors declare no conflict of interest related to this work.
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Zhao, W., Biran, V. & Jacqz-Aigrain, E. Amikacin Maturation Model as a Marker of Renal Maturation to Predict Glomerular Filtration Rate and Vancomycin Clearance in Neonates. Clin Pharmacokinet 52, 1127–1134 (2013). https://doi.org/10.1007/s40262-013-0101-6
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DOI: https://doi.org/10.1007/s40262-013-0101-6