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中华医学超声杂志(电子版) ›› 2021, Vol. 18 ›› Issue (02) : 135 -142. doi: 10.3877/cma.j.issn.1672-6448.2021.02.003

所属专题: 文献

心血管超声影像学

四维斑点追踪联合超声心动图分层应变技术评价不同部位起搏对左心室功能及同步性的影响
李慧1, 顾敏2, 胡奕然2, 齐红霞1, 刘偈1, 王浩1,()   
  1. 1. 100037 北京,国家心血管病中心 中国医学科学院阜外医院超声影像中心
    2. 100037 北京,国家心血管病中心 中国医学科学院阜外医院心律失常中心
  • 收稿日期:2020-04-25 出版日期:2021-02-01
  • 通信作者: 王浩
  • 基金资助:
    中央高校基本科研业务费专项资金资助(3332018051)

Assessment of left ventricular function and synchronicity after pacemaker implantation in different locations using four-dimensional speckle tracking imaging and three-layer speckle tracking echocardiography

Hui Li1, Min Gu2, Yiran Hu2, Hongxia Qi1, Jie Liu1, Hao Wang1,()   

  1. 1. Department of Echocardiography, National Center for Cardiovascular Disease, Fuwai Hospital, Beijing 100037, China
    2. Center of Arrhythmia, National Center for Cardiovascular Disease, Fuwai Hospital, Beijing 100037, China
  • Received:2020-04-25 Published:2021-02-01
  • Corresponding author: Hao Wang
引用本文:

李慧, 顾敏, 胡奕然, 齐红霞, 刘偈, 王浩. 四维斑点追踪联合超声心动图分层应变技术评价不同部位起搏对左心室功能及同步性的影响[J]. 中华医学超声杂志(电子版), 2021, 18(02): 135-142.

Hui Li, Min Gu, Yiran Hu, Hongxia Qi, Jie Liu, Hao Wang. Assessment of left ventricular function and synchronicity after pacemaker implantation in different locations using four-dimensional speckle tracking imaging and three-layer speckle tracking echocardiography[J]. Chinese Journal of Medical Ultrasound (Electronic Edition), 2021, 18(02): 135-142.

目的

应用四维斑点追踪显像(4D-STI)及超声心动图分层应变技术评价右心室不同部位起搏器植入术后左心室收缩功能及同步性。

方法

选取2018年12月至2019年10月于中国医学科学院阜外医院住院的双腔起搏器植入术患者100例,并根据起搏部位不同将其分为右心室心尖组(RVAP组)35例、右心室间隔组(RVSP组)35例、希氏束组(HBP组)30例。术前及术后6个月应用超声分层应变技术分析左心室3层心肌(心内膜下、中层和心外膜下心肌)纵向应变的变化,应用峰值应变离散(PSD)评估左心室同步性变化;采用4D-STI获得左心室整体纵向应变(GLS)、环周应变(GCS)、径向应变(GRS)、面积应变(GAS)。并对术前及术后3组间及组内参数进行比较分析。

结果

术后6个月随访,RVAP组PSD较术前明显延长(t=-4.502,P=0.004);RVSP及HBP组PSD均较术前缩短,HBP组较术前缩短更加显著,差异有统计学意义(t=-2.363,P=0.04);3组间术后6个月PSD比较,差异有统计学意义(F=12.261,P<0.001)。术后6个月,RVAP组GLS-epi 与术前比较差异有统计学意义(t=-2.501,P=0.046);RVSP及HBP组GLS-epi与术前相比降低不显著;3组间术后6个月GLS-epi比较,差异有统计学意义(F=6.786,P=0.034)。术后6个月RVAP组GLS、GCS、GRS、GAS均较术前降低,其中GCS、GRS、GAS差异均有统计学意义(P=0.049、0.014、0.037)。术后6个月,HBP组GLS、GAS、GRS明显优于RVAP组,差异均有统计学意义(P<0.001、=0.002、=0.001);HBP组GLS、GAS优于RVSP组,差异均有统计学意义(P=0.01、0.043)。

结论

4D-STI联合超声分层应变技术可用于早期评价不同部位起搏术后左心室功能及同步性。HBP较RVAP及RVSP在改善左心室机械同步性方面更具优势;RVAP术后早期即出现左心室收缩功能减低,HBP及RVSP对左心室收缩功能无不良影响。

Objective

To evaluate left ventricular (LV) systolic function and synchronicity after pacemaker implantation in different locations of the right ventricle by four-dimensional speckle tracking imaging (4D-STI) and three-layer speckle tracking echocardiography.

Methods

One hundred patients who received permanent cardiac dual-cavity pacemaker implantation at Beijing Fuwai Hospital from December 2018 to October 2019 were enrolled and divided into a right ventricle apex pacing (RVAP) group, right ventricular septum pacing (RVSP) group, and His bundle pacing (HBP) group based on the implantation location. Three-layer speckle tracking echocardiography was conducted to analyze LV three-layer myocardium (endocardial, mid, and epicardial layers) changes in longitudinal strain (LS), and peak strain dispersion (PSD) was used to evaluate LV synchronicity. 4D-STI was taken to obtain GLS, global circumferential strain(GCS), global radial strain(GRS), and global area strain(GAS). Preoperative and postoperative changes of the above indicators were compared between and within the three groups.

Results

Six months after surgery, PSD in the RVAP group was significantly longer than that before surgery (t=-4.502,P=0.004). PSD in both the RVSP and HBP groups was shorter than that before surgery, and the change was more significant in the HBP group(t=-2.363, P=0.04); the difference in PSD among the three groups was statistically significant (F=12.261, P<0.001).GLS-epi in the RVAP group differed significantly between before and after surgery (t=-2.501, P=0.046), and the difference among the three groups was statistically significant (F=6.786, P=0.034). Six months after surgery, GLS, GCS, GRS, and GAS in the RVAP group were all lower than those before surgery, and the differences in GCS, GRS, and GAS were statistically significant (P=0.049,0.014,0.037). GLS (P<0.001), GAS (P=0.002), and GRS (P=0.001) in the HBP group were significantly better than those in the RVAP group. GLS (P=0.01) and GAS (P=0.043) in the HBP group were significantly better than those in the RVAP group.

Conclusion

4D-STI and three-layer speckle tracking echocardiography can be used for quantitative analysis of LV systolic function and synchronicity after pacemaker implantation in different locations.HBP is more advantageous than RVAP and RVSP in improving the mechanical synchronization of the left ventricle. LV systolic function decreases early after RVAP. HBP and RVSP have no adverse effects on LV systolic function.

图1 超声分层应变技术分析获得3层心肌各节段长轴应变曲线及牛眼图。图a为3层心肌各节段纵向峰值应变曲线;图b为3层心肌各节段纵向峰值应变牛眼图
图2 四维斑点追踪显像获得左心室各节段峰值应变曲线及牛眼图。图a示左心室整体纵向应变;图b 示左心室整体环周应变;图c示左心室整体径向应变;图d示左心室整体面积应变
表1 不同起搏部位的3组患者术前基线资料比较
图3 右心室心尖部起搏患者左心室17节段长轴应变达峰时间牛眼图(绿色代表应变达峰时间正常,黄色和红色代表应变达峰时间延长)。图a为术前牛眼图显示部分节段颜色有改变,峰值应变离散参数(PSD)为70 ms;图b为术后6个月牛眼图显示各节段颜色差异较大,尤其近心尖部节段,PSD为124 ms
图4 希氏束起搏患者左心室17节段长轴应变达峰时间牛眼图(绿色代表应变达峰时间正常,黄色和红色代表应变达峰时间延长)。图a为术前牛眼图显示部分节段颜色有改变,峰值应变离散参数(PSD)为53 ms;图b为术后6个月牛眼图显示各节段颜色均匀一致,PSD为18 ms
表2 不同起搏部位的3组患者术前及术后6个月二维斑点追踪及分层应变分析结果比较(
xˉ
±s
表3 不同起搏部位的3组患者术前及术后6个月四维斑点追踪分析结果比较(
xˉ
±s
表4 斑点追踪参数观察者间及观察者内重复性检验结果
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