alexa Time Course of Rocuronium-Induced Neuromuscular Blockade in Pediatric Patients: A Phase III, Randomized, Dose-Response Study
ISSN: 2155-6148

Journal of Anesthesia & Clinical Research
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Research Article

Time Course of Rocuronium-Induced Neuromuscular Blockade in Pediatric Patients: A Phase III, Randomized, Dose-Response Study

Christopher F. Tirotta1*, Barbara Brandom2, M. Saif Siddiqui3, Melissa Ehlers4, Jim Betzel5, Jin-Yi Chen5, Joris de Bie5 and Manfred Blobner6

1Congenital Heart Institute of Miami Children’s Hospital & Arnold Palmer Hospital for Children, Miami

2Children’s Hospital of Pittsburgh, Pittsburgh

3Arkansas Children’s Hospital, Little Rock

4Albany Medical Center, New york

5Merck Sharp & Dohme Corp., Whitehouse Station

6Klinik für Anaesthesiologie der Technischen Universität München, Deutsches Herzzentrum, Munich, Germany

*Corresponding Author:
Christopher F. Tirotta
Division of Cardiac Anesthesia
Congenital Heart Institute of Miami Children’s Hospital & Arnold Palmer Hospital for Children
3100 SW 62nd Avenue, Miami, FL 33155, USA
Tel: +1 305 663 8456
Fax: +1 305 663 8573
E-mail: [email protected]

Received date: November 29, 2011; Accepted date: February 11, 2012; Published date: February 14, 2012

Citation: Tirotta CF, Brandom B, Siddiqui MS, Ehlers M, Betzel J, et al. (2012) Time Course of Rocuronium-Induced Neuromuscular Blockade in Pediatric Patients: A Phase III, Randomized, Dose-Response Study. J Anesthe Clinic Res 3:189. doi: 10.4172/2155-6148.1000189

Copyright: © 2012 Tirotta CF et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Background: We evaluated the time course of neuromuscular blockade (NMB) of three intubating doses of rocuronium in pediatric patients. Methods: This multicenter, randomized, assessor-blinded study included surgical patients aged 0 to 17 years. Anesthesia was induced with sevoflurane, continued until intubation, and maintained with isoflurane. Neuromuscular function was monitored by acceleromyography. Patients received a rocuronium dose of 0.45, 0.6 or 1.0 mg/kg, and intubation was attempted 60 sec later. Primary outcome variable was time from end of rocuronium administration to reappearance of the third twitch (T3). Time to onset of peak NMB was assessed. Safety assessments included monitoring adverse events. Results: A total of 207 patients were enrolled and randomized. Median times from rocuronium administration to NMB onset were <1.2 minutes in all age groups for each dose in the per-protocol population (n=175). Median time from rocuronium administration to reappearance of T3 ranged from 21 to 114 minutes overall, and was longer in the higher dose groups across age groups, and longer in neonates and infants compared with other age groups. There were no adverse events considered related to rocuronium. Conclusions: Rocuronium at intubating doses of 0.45, 0.6, or 1.0 mg/kg is effective in producing rapid-onset neuromuscular blockade with an intermediate duration of action in pediatric patients during sevoflurane induction/ isoflurane maintenance anesthesia. Longest duration of blockade occurred with the highest dose within all age groups, and in neonates and infants compared with other age groups.

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