| 孙欣,王浩,牛红霞.超声心动图评价束支传导阻滞患者左右心室间收缩失同步[J].中国医学影像技术,2006,22(2):233~235 |
| 超声心动图评价束支传导阻滞患者左右心室间收缩失同步 |
| Evaluation of interventricular systolic dyssynchrony in patientswith bundle branch block using echocardiography |
| 投稿时间：2005-09-21 修订日期：2005-11-07 |
| DOI： |
| 中文关键词: 超声心动描记术 组织多普勒成像 心室间 失同步 |
| 英文关键词:Echocardiography Tissue Doppler imaging Intervent ricular Dyssynchrony |
| 基金项目: |
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| 摘要点击次数: 1780 |
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| 中文摘要: |
| 目的 探讨定量组织多普勒及频谱多普勒成像观察束支传导阻滞患者左右心室间心肌收缩运动失同步的应用价值。方法 完全性右束支(RBBB) 及完全性左束支传导阻滞者(LBBB) 各20 例,正常对照者20 例。测量右室游离壁、室间隔、左室侧壁基底段收缩的起始( TO ) 、达峰( TS) 及终止时间( TSe ) ;肺动脉瓣(PETP) 与主动脉瓣的射血前间期( PETA ) 及其时间差( PETd) 。结果 RBBB 组的右室壁TO 、TS 及PETP 较正常组显著延迟( P < 0. 001) ,PETd 为(43 ±8) ms。LBBB组的室间隔和侧壁的TO 、TS 、TSe及PETA 均较正常组显著延迟( P < 0. 001) ,PETd 为( - 45 ±22) ms。结论 定量组织多普勒能够观察到心室电2机械耦联情况,结合频谱多普勒对血流动力学的测定,可以综合评价左右心室间运动的失同步。 |
| 英文摘要: |
| Objective To evaluate the intervent ricular systolic dyssynchrony in patients with bundle branch block by tissueDoppler imaging ( TDI) and pulsed-wave Doppler ( PW) echocardiography. Methods Subject s were isolated lef t bundlebranch block (LBBB , n = 20) , isolated right bundle branch block (RBBB , n = 20) , and normal cont rols ( n = 20) . The re-gional durations of time measured for the basal segments in the right vent ricle , septal and LV lateral walls were f rom thestart of QRS to the start of S wave ( TO ) , to the peak velocity of Swave ( TS) and to the end of S wave ( TSe ) respectively.The difference of pre-ejection time (PETd ) between aortic ( PETA ) and pulmonary valves ( PETP ) in PW was also measured.Results TO , TS of right vent ricle wall and PETP were delayed in those with RBBB compared with the normal cont rols ( P <0. 001) . The PETd of RBBB group was (43 ±8) ms. TO , TS , TSe of septal and lateral wall and PETA were also delayed inthose with LBBB ( P < 0. 001) . The PETd of LBBB group was ( - 45 ±22) ms. Conclusion Combination of TDI with PWtechniques can assess the elect romechanical uncoupling processes and intervent ricular dyssynchrony in patient s with bundlebranch block. |
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