各组患者分别接受上述药物配制的病人自控静脉镇痛。

All patients were treated with patient-controlled intravenous analgesia (PCIA) prepared with the corresponding drugs above.

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目的探讨影响芬太尼病人自控静脉镇痛(PCIA)的因素，提高术后镇痛效果和质量。

Objective to analyse the influencing factors for patient-controlled intravenous analgesia (PCIA) by infusing fentanyl and improve the effect of postoperative pain relief.

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目的观察恩丹西酮对乳腺癌根治术后曲马多病人自控静脉镇痛(PCIA)疗效的影响。

Objective to investigate the effect of ondansetron on the analgesic efficacy of tramadol for postoperative patient-controlled intravenous analgesia (PCIA).

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