CAJ | 학술논문

目的应用组织多普勒Tei指数和二维斑点追踪技术，评价双腔起搏器患者左心室扭转、解旋运动、心功能。方法40例安装起搏器患者于术前及术后分别采集心尖四腔二尖瓣环组织多普勒频谱，左心室短轴心底水平及心尖水平二维图像，进入STI系统测量计算左心室Tei指数、峰值旋转角度、峰值扭转角度、等容舒张解旋率，并统计分析。结果术后Tei指数下降（0.44±0.06 vs．0.62±0.11），差异有统计学意义（P＜0.05），左心室收缩期峰值扭转角度（15.80°±5.58°vs．10.08°±5.67°，P＜0.05）、等容舒张解旋率升高（0.44±0.04 vs．0.24±0.03，P＜0.05）。心底水平侧壁，心尖水平前室间隔、侧壁、后壁、后室间隔左心室局部旋转运动较术前增强（ P＜0.05）。结论双腔起搏器改善了患者左心室收缩及舒张功能，二维斑点追踪技术可以较敏感地评价心功能。
목적응용조직다보륵Tei지수화이유반점추종기술，평개쌍강기박기환자좌심실뉴전、해선운동、심공능。방법40례안장기박기환자우술전급술후분별채집심첨사강이첨판배조직다보륵빈보，좌심실단축심저수평급심첨수평이유도상，진입STI계통측량계산좌심실Tei지수、봉치선전각도、봉치뉴전각도、등용서장해선솔，병통계분석。결과술후Tei지수하강（0.44±0.06 vs．0.62±0.11），차이유통계학의의（P＜0.05），좌심실수축기봉치뉴전각도（15.80°±5.58°vs．10.08°±5.67°，P＜0.05）、등용서장해선솔승고（0.44±0.04 vs．0.24±0.03，P＜0.05）。심저수평측벽，심첨수평전실간격、측벽、후벽、후실간격좌심실국부선전운동교술전증강（ P＜0.05）。결론쌍강기박기개선료환자좌심실수축급서장공능，이유반점추종기술가이교민감지평개심공능。
Objective To discuss left ventricular ( LV ) twist and untwist in patients with dual-chamber pacemaker,tissue doppler Tei index and speckle tracking imaging ( STI) were used and the cardiac function was evaluated.Methods Two dimensional images of the apical four chamber view ,the short axis view of in the basal level and apex level of LV were obtained in 40 cases before and after the pacemaker implantation ,so were the mitral annular tissue doppler spectrum , then we entered the STI system to record the parameters such as Tei index , peak rotation,peak twist,untwist rate,and to made statistical analysis .Results The Tei index (0.44 ±0.06 vs.0.62 ± 0.11)was decreased,bur the peak twist(15.80°±5.58°vs.10.08°±5.67°),untwist rate(0.44 ±0.04 vs.0.24 ± 0.03 ) were increased after the operation ( P<0.05 ) .The LV regional rotation in the lateral wall of basal level and the anterior septum,the lateral wall,the posterior wall,the posterior septum of the apical level enhanced (P<0.05). Conclusions The method of dual-chamber pacemaker implanting can improve the patient′s LV systolic and diastolic function.The STI can evaluate the cardiac function sensitively .