| ||||||||||||||
|
|
|||||||||||||






*Department of Pediatric Anesthesiology, Childrens Memorial Hospital, Chicago, Illinois; and
Department of Anesthesiology, Northwestern University Medical School, Chicago, Illinois
Address correspondence and reprint requests to Richard M. Dsida, MD, Department of Pediatric Anesthesiology, Childrens Memorial Hospital, 2300 Childrens Plaza, Chicago, IL 60614. Address e-mail to r-dsida{at}northwestern.edu
Published data suggest that ketorolac pharmacokinetics are different in children than in adults. We sought to better characterize ketorolac pharmacokinetics in children. Thirty-six children, aged 116 yr, were stratified into four age groups: 13 yr, 47 yr, 811 yr, and 1216 yr. Each child received 0.5 mg/kg of ketorolac tromethamine IV after completion of elective surgery. A maximum of 16 venous blood samples (mean, 13 ± 2) were collected at predetermined times up to 10 h after drug administration. Plasma ketorolac concentrations were measured by high-performance liquid chromatography after solid-phase extraction. Individual concentration-versus-time relationships were best fit to a two-compartment pharmacokinetic model by using SAAM II. Body weight-normalized pharmacokinetic variables did not differ among the age groups and were similar to those reported for adults, including a volume of distribution at steady state of 113 ± 33 mL/kg (mean ± SD) and an elimination clearance of 0.57 ± 0.17 mL · min-1 · kg-1. Our study demonstrates that a single dose of ketorolac (0.5 mg/kg) results in plasma concentrations in the adult therapeutic concentration range for 6 h in most children. Our data provide no evidence that children require either larger weight-adjusted doses or shorter dosing intervals than adults to provide similar plasma drug concentrations.
IMPLICATIONS: The literature suggests that ketorolac disposition differs between children and adults. We characterized ketorolac pharmacokinetics in 36 children. Body weight-normalized two-compartment pharmacokinetic variables did not differ among pediatric patients <17 yr old and were similar to adult values.
This article has been cited by other articles:
![]() |
E. Kumpulainen, H. Kokki, M. Laisalmi, M. Heikkinen, J. Savolainen, J. Rautio, and M. Lehtonen How Readily Does Ketorolac Penetrate Cerebrospinal Fluid in Children? J. Clin. Pharmacol., April 1, 2008; 48(4): 495 - 501. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. Jeyakumar, T. M. Brickman, M. E. Williamson, K. Hirose, P. Krakovitz, K. Whittemore, and C. Discolo Nonsteroidal Anti-inflammatory Drugs and Postoperative Bleeding Following Adenotonsillectomy in Pediatric Patients Arch Otolaryngol Head Neck Surg, January 1, 2008; 134(1): 24 - 27. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. M. Lynn, H. Bradford, E. D. Kantor, K.-Y. Seng, D. H. Salinger, J. Chen, R. G. Ellenbogen, P. Vicini, and G. D. Anderson Postoperative Ketorolac Tromethamine Use in Infants Aged 6-18 Months: The Effect on Morphine Usage, Safety Assessment, and Stereo-Specific Pharmacokinetics Anesth. Analg., May 1, 2007; 104(5): 1040 - 1051. [Abstract] [Full Text] [PDF] |
||||
![]() |
T. Hackmann Smaller Dose of 0.5 mg/kg IV Ketorolac Is Sufficient to Provide Pain Relief in Children Anesth. Analg., January 1, 2004; 98(1): 275 - 276. [Full Text] [PDF] |
||||
![]() |
Ketorolac Pharmacokinetics Don't Differ in Children and Adults Journal Watch Emergency Medicine, April 17, 2002; 2002(417): 9 - 9. [Full Text] |
||||
|