Eighty-nine children scheduled for elective inguinal hernia repair or hydrocele were randomly assigned to one of the three groups : Group L ( caudal levobupivacaine ) , Group LD@ ( levobupivacaine plus @gkg ( -@ ) dexmedetomidine ) , or Group LD@ ( levobupivacaine plus @gkg ( -@ ) dexmedetomidine ) .