摘要
目的探讨组织运动瓣环位移追踪技术(TMAD)检测二尖瓣环摆动指数(SI_(MA)),定量评估左心室舒张功能的价值。方法随机选取2011-01—2012-12住院的96例患者,根据二尖瓣环舒张期运动平均速度比值(e/a_(-mean))分为左室舒张功能异常组和正常组。应用TMAD获取相对于心尖的二尖瓣环室间隔(TMAD1)、侧壁(TMAD2)及此2位点连线中点(TMADmid)的位移值,以及相对于房间隔顶部的中点位移值(TMAD_amid),计算SI_(MA)。结果两组患者的SI_(MA)分别为(1 1.40±2.74)%、(6.02±1.39)%,比较有统计学差异(P<0.01)。SI_(MA)与E/e_(mean)比值间呈正相关(r=0.89,P<0.01);而与e/a_(-maen)比值呈负相关(r=-0.82,P<0.05)。结论 SI_(MA)能快速、客观地反映左心室舒张功能,是评估左心室舒张功能的有效指标。
Objective To evaluate the left ventricular diastolic function （LVDF） by detecting the swing index of mitral valve annulus（SIMA）. Methods Ninety six patients were divided into LVDF normal（n=30） and LVDF abnormal groups （n=66） based on the mean velocity of mitral annulus（e/a-mean）. The displacements of mitral annulus moving to the apex at septum（TMAD1） and lat-eral （TMAD2） and midpoint （TMADmid） sites were measured by tissue motion annular displacement （TMAD） technique;the dis-placements of mitral annulus moving to the atrial roof at midpoint （TMADamid） was also recorded. The swing index of mitral annu-lar （SIMA） was calculated （SIMA=TMADamid/TMADmid ＆#215;100%）. Results The SIMA was （6.02 ±1.39）% in normal group and （11.40±2.74）% in abnormal group （P〈0.01）. The SIMA was significantly correlated with e/a-mean ratio and E/emean ratio （r=- 0.82, r=0.89）. Conclusion The SIMA was an effective index for evaluation of left ventricular diastolic function.
出处
《浙江医学》
CAS
2014年第3期213-214,221,共3页
Zhejiang Medical Journal
关键词
摆动指数
舒张功能
二尖瓣环
Swing index
Diastolic function
Mitral annulus
