In group II, local infiltration was performed before the incision was sutured, and 0.75% ropivacaine was injected into the muscle of the lower edge of the rib stump of the extracted cartilage, totaling 3 mg/kg.
In group II, local infiltration was performed before incision suture, and 0.75% ropivacaine (3mg / kg) was injected into the muscle at the lower edge of the rib stump of the cartilage
In group II, local infiltration was performed before incision suture, and 0.75% ropivacaine (3mg/kg in total) was injected into the muscles of the lower edge of the rib stump of the cartilage.