【摘要】 目的 采用組織多普勒成像（TDI）檢測右室心尖部起搏（RVAP）、右室流出道起搏（RVOTP）對于左室同步性的影響與比較。 方法 2008年3月-2010年3月20例安置RVAP患者及20例安置RVOTP患者術后3個月行TDI檢測，將左室12節段收縮達峰時間的標準差（TS-SD）、6個基底段收縮達峰時間差值、左室12個節段中任意兩個節段收縮達峰時間最大差值作為同步化參數。 結果 TDI結果顯示，兩組之間同步性參數比較，有統計學意義（Plt;0.01）。 結論 RVAP會導致左室內收縮不同步，TDI技術可以準確評價左室收縮同步性。【Abstract】 Objective To explore the impact of right ventricular apex pacing (RVAP) and right ventricular outflow tract pace-making (RVOTP) on left ventricular systolic synchronization (LVSS) via tissue Doppler imaging (TDI). Methods A total of 20 patients with RVAP and 20 patients with RVOTP from March 2008 to March 2010 were collected. TDI detection was performed on all the patients three months after the operation. Synchronizing parameters included TS-SD of 12 regional contractions of left ventricle, 6 TS difference of basal segment, and maximum difference of TS in 12 regional contractions of left ventricle. Results The results of TDI showed significant difference in synchronizing parameters between RVAP and RVOTP (Plt;0.01). Conclusion RVAP may lead to un-synchronization of the left systole. TDI can evaluate LVSS accurately.
