四极导线提供的可用的左心室起搏位点  被引量:2

Availability of viable left ventricular pacing sites with Quartet^TM quadripolar leads

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作  者:顾敏[1] 华伟[1] 樊晓寒[1] 丁立刚[1] 牛红霞[1] 王靖[1] 薛聪[1] 金汉[1] 张澍[1] 

机构地区:[1]中国医学科学院北京协和医学院国家心血管病中心心血管疾病国家重点实验室阜外医院心律失常中心,100037

出  处:《中华心律失常学杂志》2017年第3期229-233,共5页Chinese Journal of Cardiac Arrhythmias

摘  要:目的探索真实世界中左心室4极导线提供可用的起搏位点的数目。方法本研究入选了2013年9月至2015年9月在中国医学科学院阜外医院接受心脏再同步治疗(CRT)的患者24例,所有患者均使用了Quartet^TM(美国圣犹达公司)左心室4极导线。分别于出院前和术后3个月评价Quartet^TM导线提供可用的左心室起搏位点的数目。可用起搏位点的标准设为:该位点至少1个起搏向量阈值≤2.5v/0.5ms且2倍起搏阈值不引起膈肌刺激。对照组采用4极导线模拟双极导线配置,即仅使用4极导线的远端两极模拟双极导线。结果平均随访时间为(93+3)d。出院前,Quartet^TM4极导线比模拟双极导线提供了更多的可用起搏位点[中位数3(四分位间距2~4)对中位数2(四分位间距1~2),P〈0.001]。4极导线和模拟双极导线能够提供至少1、2、3个和4个可用左心室起搏位点的比例分别为:100%(24/24).91.7%(22/24),58.3%(14/24)和33.3%(8/24)以及91.7%(22/24),70.8%(17/24),0(0/24)和0(0/24)。3个月随访时,Quartet^TM 4极导线提供的可用的左心室起搏位点较出院前保持不变[中位数3(四分位间距2-4),P=0.45]。结论与传统双极导线比较,Quartet^TM4极导线可以提供更多的可用的左心室起搏位点。Quartet^TM4极导线提供的左心室起搏位点数目在3个月随访时保持不变。Objective This study aimed to evaluate the acute and 3-month availability of viable left ventricular pacing site (LVPS) provided by a quadripolar left ventricular(LV) pacing lead. Methods A single- center cohort study evaluated consecutive patients who underwent a cardiac resynchronization therapy (CRT) implant with the Quartet^TM LV lead under local guidelines. The availability of viable LVPS was assessed at the pre-discharge and 3-month follow-up visit. Bilaolar lead configurations, served as the controlgroup, were modeled by eliminating the two proximal electrodes on the QuartetTM LV lead. Results A total of 24 patients were en- rolled and finished 3-month follow-up. The mean follow-up period was ( 93 ± 3 ) days. At pre-diseharge, the QuartetTM LV lead provided more viable LVPSs compared with the bipolar equivalents [ median 3 (IQR 2-4 )vs. median 2 (IQR 1-2), P〈0. 001 ]. The percentage of patients with at least 1,2,3, and 4 viable LVPSs were 100% (24/24) ,91.7% (22/24) ,58.3% (14/24) and 33.3% (8/24) for QuartetTM leads and 91.7% (22/ 24) ,70. 8% (17/24) ,0(0/24) and 0(0/24) for bipolar lead configurations ,respectively. The median and IQR values of viable LVPSs provided by the QuartetTM LV lead remained the same [ 3 ( IQR 2-4 ) between pre-dis- charge and 3-month follow-up( P = 0. 45 ) ]. Conclusions Compared with the bipolar equivalent, QuartetTM LV lead provides more viable LVPS. The number of LVPS provided by QuartetTM leads remained unchanged between pre-diseharge and 3-month follow-up.

关 键 词:左心室起搏位点 左心室4极导线 左心室起搏配置 心脏再同步治疗 

分 类 号:R541.6[医药卫生—心血管疾病]

 

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