摘要
目的 探讨二维斑点追踪技术（2D-STI）评价不同负荷特发性室性早搏（IPVCs）患者的左心室整体收缩功能.方法 纳入IPVCs患者55例为病例组,根据室早数量与24h总心搏的比值分为室早负荷〈20％组（A组）和≥20％组（B组）,30例健康志愿者为对照组.采用普通超声心动图测量各组左室舒张末内径（LVEDD）、左室收缩末内径（LVESD）和左室射血分数（LVEF）,采用2D-STI技术分析得出各组左室圆周收缩期峰值应变值（LVCS）和左室纵向收缩期峰值应变值（LVLS）.结果 各组间LVEDD、LVESD和LVEF比较差异均无统计学意义（P〉0.05）.病例组LVLS和LVCS分别为（17.68±2.49）％和（18.37±2.26）％,对照组LVLS和LVCS分别为（22.24± 1.57）％和（22.91±1.83）％,病例组LVLS和LVCS均较对照组减低,差异有统计学意义（P〈0.01）.A组LVLS和LVCS分别为（-18.77±2.05）％和（-19.27±2.11）％,B组LVLS和LVCS分别为（-16.28±2.35）％和（-17.20±1.91）％,与A组比较,B组LVLS和LVCS减低更显著,差异有统计学意义（P〈0.01）.结论 室性早搏可影响左心功能,并且负荷越大,影响越明显.2D-STI技术能较准确地定量评估IPVCs患者早期隐匿的左心功能损害.
Objective To evaluate the left ventricular systolic function in patients with different burden of idiopathic premature ventricular contractions（IPVCs） by tow-dimensional speckle tracking imaging technique（2D-STI）.Methods A total 55 patients with IPVCs were observed,according to the burden of IPVCs,these patients were divided into two subgroups：group A（〈20%）,group B（≥20%）,30 cases of healthy volunteers were used as the control group.Left ventricular end-diastolic dimension （LVEDD）,left ventricular end-systolic dimension （LVESD） and left ventricular ejection fraction （LVEF） were measured by common echocardiography.Left ventricular longitudinal strain （LVLS） and left ventricular circumferential strain （LVCS） were analyzed by 2D-STI.Results There were no significant difference between patients and controls in LVEF,LVESD,LVEDD.LVCS and LVLS of patients were （17.68±2.49）%、（18.37t2.26）%,while LVCS and LVLS of controls were （22.24± 1.57）%、（22.91 ±1.83）%.LVCS and LVLS of patients had been significantly impaired when compared to controls （P〈0.01）.LVCS and LVLS of group A were（-18.77±2.05）%、（-19.27±2.11）%,while LVCS and LVLS of group B were （-16.28±2.35）%、（-17.20±1.91）%.Compared with group A,LVLS and LVCS of group B reduced more significantly,the difference was statistically significant （P〈0.01）.Conclusion IPVCs can affect the left ventricular systolic function,and the higher the burden,the more obvious the influence.2D-STI can accurately assess the hidden left cardiac function in patients with IPVCs.
作者
徐杜娟
厉志洪
袁晓静
刘茹
吕楠
刘莹
XU Du-juan, LI Zhi-hong, YUAN Xiao-jing, et al.(Department of Ultrasound, Xuzhou Central Hospital, Xuzhou 221009, Chin)
出处
《中国心血管病研究》
CAS
2018年第2期151-154,共4页
Chinese Journal of Cardiovascular Research
关键词
二维斑点追踪技术
特发性室性早搏
不同负荷
左心室功能
Tow-dimensional speckle tracking imaging technique
Idiopathic premature ventricular contractions
Different burden
The left ventricular function
作者简介
通讯作者：厉志洪，E-mail：569329060@qq．com
