The patients were divided into two groups by random number method: GroupRD1 group and GroupRD2 group were given general anesthesia and intercostal nerve block.The drug for intercostal nerve block was 0.33% ropivacaine +2.333mg compound betamethasone (1.667mg betamethasone dipropionate + 0.667mg betamethasone sodium phosphate) to 15ml.
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Acute and chronic postoperative pain
Timeframe: 6 hours after surgery
Acute and chronic postoperative pain
Timeframe: 24 hours after surgery
Acute and chronic postoperative pain
Timeframe: 48 hours after surgery
Acute and chronic postoperative pain
Timeframe: 1 months after surgery
Acute and chronic postoperative pain
Timeframe: 3 months after surgery