British Journal of Anaesthesia, Vol 80, Issue 4 507-508, Copyright © 1998 by The Board of Management and Trustees of the British Journal of Anaesthesia
M. J. Da Conceicao and L. Coelho
We have determined the effectiveness and degree of motor block produced by
the new local anaesthetic, ropivacaine, when used for caudal anaesthesia in
children. We studied 60 children, aged 3-6 yr, ASA I, allocated randomly in
a double-blind manner, to receive one of two local anaesthetics: 0.375%
ropivacaine 1.0 ml kg-1 or 0.375% bupivacaine 1.0 ml kg-1. Patients were
anaesthetized with continuous infusion of propofol 200 micrograms kg-1
min-1. The lungs were ventilated with 50% nitrous oxide in oxygen. Heart
rate and arterial pressure were measured every 5 min after administration
of local anaesthetic until discharge from the recovery room. The extent of
motor block in the recovery room was scored as 1-3. Adverse events and time
to first analgesic requirements were recorded. Patients in the two groups
did not differ in age, weight or height. There were no differences in heart
rate or arterial pressure between the two groups. No adverse events were
observed. The degree of motor block was significantly different between the
two groups. The ropivacaine group showed a shorter duration of motor block
than the bupivacaine group (P < 0.05). Postoperative analgesia was
required at a mean time of 5 (SD 3.2) h in the ropivacaine group compared
with 5 (2.8) h in the bupivacaine group. These findings suggest that caudal
anaesthesia with ropivacaine in paediatric patients is effective and
produces less motor block in the postoperative period.
SHORT COMMUNICATIONS
Caudal anaesthesia with 0.375% ropivacaine or 0.375% bupivacaine in paediatric patients
Department of Anaesthesiology, Santa Catarina Federal University and Joana de Gusmao Children Hospital, Florianopolis, SC, Brazil
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