2016版中国科技期刊引证报告相关数据——《中国医学影像技术》

2016版中国科技期刊引证报告相关数据
——《中国医学影像技术》

由中国科学技术信息研究所主持的“2015中国科技论文统计结果发布会”于2016年10月12日在北京国际会议中心举行。《中国医学影像技术》杂志在《2016版中国科技期刊引证报告》(核心版)的相关数据为：

1 文献来源量：438篇；

2 基金论文比：0.42；

3 总被引频次：3748；

4 影响因子：0.665；

5 学科扩散指标：20.52；

6 学科影响指标：0.95；

7 综合评价总分：65.69。

Effect of QRS duration on left ventricular function and synchrony in complete left bundle branch block patients with preserved left ventricle ejection fraction using two-dimensional speckle tracking echocardiography

LIGuangyuan,MAChunyan*,WANGYonghuai,LIYang,GUANZhengyu,JINXuanyi,YANGJun

(DepartmentofCardiovascularUltrasound,theFirstAffiliatedHospitalofChinaMedicalUniversity,Shenyang110001,China)

Objective To evaluate the value of two-dimensional speckle tracking echocardiography (2D-STE) in assessing left ventricular systolic function, diastolic function and synchrony with different QRS complex duration in complete left bundle branch block (CLBBB) patients with preserved left ventricle ejection fraction (LVEF). Methods A total of 44 patients with CLBBB and LVEF≥50% were included. All the patients were divided into two groups based on QRS duration, QRS>150 ms as wide QRS group and 120 ms≤QRS≤150 ms as narrow QRS group. And 30 healthy people were included as control group. Two-dimensional echocardiography and 2D-STE were performed. Left ventricle longitudinal peak stain of global, septum and free wall (LS-G, LS-Sept, LS-Lat)， standard deviation of time to peak systolic strain for the 18 left ventricular segments (SDt) and index of left ventricular diastolic function (EDT, E/A and E/e') were measured. Results SDt values of wide QRS group and narrow QRS group were significantly higher than that of control group (bothP<0.01). And SDt of wide QRS group was significantly higher than that of narrow QRS group (P<0.05). LVEF and LS-G in wide QRS group were significantly lower than those in both narrow QRS group and control group (allP<0.05)， while there was no significant difference between narrow QRS group and control group (allP>0.05). The LS-Sept in wide QRS group and narrow QRS group were both lower than that of control group (bothP<0.01). And LS-Sept in wide QRS group was lower than that of narrow QRS group (P<0.01). LS-Lat in narrow QRS group was separately higher than those of both wide QRS group and control group (bothP<0.05), while there was no significant difference of LS-Lat between wide QRS group and control group (P>0.05). Compared with control group, E/A and EDT decreased and of E/e' increased in both wide QRS group and narrow QRS group (allP<0.05). While there was no significant difference between wide QRS group and narrow QRS group (allP>0.05). Conclusion In patients of wide QRS CLBBB with preserved LVEF, left ventricular systolic, diastolic function and synchrony decrease, while left ventricular systolic function of patients with narrow QRS do not significantly decrease.

Bundle-branch block; QRS complex duration; Ventricular function, left; Echocardiography; Strain

国家自然科学基金(81401413)。

李光源(1990—)，女，辽宁凤城人，在读硕士。研究方向：超声心动图新技术在完全性左束支传导阻滞中的应用。

E-mail: liguangyuan900914@sohu.com

马春燕，中国医科大学附属第一医院心血管超声科，110001。E-mail: mcy_echo@163.com

2016-08-29

2017-01-05