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右心室双部位起搏治疗心力衰竭的疗效和安全性 被引量:1

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摘要 目的评价右心室双部位(RV-Bi)起搏治疗慢性充血性心力衰竭的疗效。方法 3例心肌病合并心力衰竭患者和3例起搏器综合征患者接受了RV-Bi起搏治疗。比较术前及术后3个月,在RV-Bi起搏、右心室心尖部(RVA)起搏和右心室流出道(RVOT)起搏模式下,患者QRS宽度(QRSd)、QRS电轴(QRSa)和心功能的变化。结果 RV-Bi起搏与RVOT起搏比较,QRSa差异无统计学意义,但与RVA起搏比较,QRSa的差异具有统计学意义;RV-Bi起搏的平均QRSd(143ms)最窄,较RVA起搏(177ms)缩短34ms,较RVOT起搏(155ms)缩短12ms。RV-Bi起搏时心功能优于RVA和RVOT起搏。RV-Bi起博时射血分数(50.4%±3.6%)、每搏量[(65±14)ml]和心输出量[(5.77±0.69)L/min]均较术前射血分数(38.5%±6.2%)、每搏量[(50±18)ml]、心输出量[(4.16±0.55)L/min]及RVA起搏射血分数(34.2%±7.4%)、每搏量[(48±15)ml]、心输出量[(4.12±0.51)L/min]和RVOT起搏时射血分数(45.4%±5.6%)、每搏量[(62±16)ml]、心输出量(5.42±0.63 L/min)显著提高(均为P<0.05)。结论 RV-Bi起搏可改善心室的激动顺序和同步性,可用于慢性心力衰竭和起搏器综合征的治疗,此项技术可作为双室同步起搏技术的替代选择,并具有手术简便和价格低廉的优点。
出处 《中国心血管杂志》 2011年第4期292-294,共3页 Chinese Journal of Cardiovascular Medicine
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