结果四组病人的年龄、体重、芬太尼总量、麻醉时间、气腹时间、输液总量和基础疾病的差异无统计学意义。
Results the difference in patients 'age, weight, fentanyl doses, anesthesia time, pneumoperitoneum time, infusion volume and underlying diseases was of no statistical significance in four groups.
结论：B组病人选用PCVA术，持续注入枸橼酸芬太尼，有95％的病人达到了优良的镇痛效果，并且副作用发生率很低，是一种比较理想的术后镇痛疗法。
Conclusion: In group B(PCVA) injected by fentanyl continually, about 95%patients have comfortable result of easing pain and have low side effect. It's a good method of easing pain after operating.
结论：B组病人选用PCVA术，持续注入枸橼酸芬太尼，有95％的病人达到了优良的镇痛效果，并且副作用发生率很低，是一种比较理想的术后镇痛疗法。
Conclusion: In group B(PCVA) injected by fentanyl continually, about 95%patients have comfortable result of easing pain and have low side effect. It's a good method of easing pain after operating.
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