Analgesic effect of ketorolac as an adjuvant to bupivacaine in ultrasound-guided pectoral nerve block (I + II) for patients undergoing modified radical mastectomy: A randomized controlled clinical trial

酮咯酸作为布比卡因辅助药物在超声引导下胸大神经阻滞（I+II）中用于改良根治性乳房切除术患者的镇痛效果：一项随机对照临床试验