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右美托咪定复合腰丛-坐骨神经阻滞对下肢骨折患者血清VEGF的影响 被引量:5

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摘要 目的:研究右美托咪定(Dex)复合腰丛-坐骨神经阻滞对下肢骨折内固定手术患者围术期血清血管内皮细胞生长因子(VEGF)水平的影响。方法选用择期行下肢骨折内固定手术患者50例(ASAⅠ~Ⅱ级),随机分成A、B两组,每组25人, A组为腰硬联合麻醉组, B组为右美托咪定复合腰丛-坐骨神经阻滞组。A组患者经L2~L3椎间隙穿刺,腰麻用药为0.5%布比卡因1.8 ml,腰麻注药后1.5 h开始经硬膜外管推注0.5%的罗哌卡因液维持麻醉平面及深度,术中间断静注咪唑安定,保持患者为睡眠状态。B组患者于神经刺激仪辅助下行腰丛-坐骨神经阻滞,术中给予右美托咪定镇静,先1μg/kg静脉持续泵注,10 min后以0.4μg/(kg·h)速率泵注。分别于T0~T5时点抽血5ml,测定血清VEGF的浓度。结果与T0比较, A组T1、T2时点的血压、心率及B组T1、T2、T3时点的HR均降低(P〈0.05);A组及B组T1~T5时点的VEGF浓度均上升(P〈0.05)。与A组比较, B组T1、T2时点的血压升高(P〈0.05), T1、T2、T3时点的HR下降(P〈0.05), B组T1~T5时点的VEGF浓度升高(P〈0.05)。结论 Dex复合腰丛-坐骨神经阻滞对患者循环影响较小,促进VEGF分泌的力度比腰硬联合麻醉更大,更有利于患者的术后骨折愈合,是临床值得推荐的方法,不过对心动过缓的患者要谨慎应用。
出处 《中国实用医药》 2014年第3期143-145,共3页 China Practical Medicine
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