The use of increasing doses of clonidine ssociated to bupivacaine in caudal epidural block
provides better postoperative analgesia compared whit analgesia provide by bupivacaine alone
It is a randomized, double blind study, involving 80 children with ages from 1 to 10 years
old, following eletive hypospadias surgery, under general anesthesia and caudal epidural
block . The patients will be divided into 4 groups: bupivacaine alone, bupivacaine plus
clonidine 1mcg/kg, bupivacaine plus clonidine 2 mcg/kg, bupivacaine plus clonidine 3 mg/kg.
The peroperative consumption of anesthetics gases, heart rate and arterial blood pressure
will be recorded. Postoperative pain will be evaluated by using FLACC scale ( faces , legs,
activity , cry , consolability ) . Requiriments for supplementary postoperative analgesia at
24 h will be avaiable.