2016版中國科技期刊引證報告相關數據
——《中國醫學影像技術》

2016版中國科技期刊引證報告相關數據
——《中國醫學影像技術》

由中國科學技術信息研究所主持的“2015中國科技論文統計結果發布會”于2016年10月12日在北京國際會議中心舉行?！吨袊t學影像技術》雜志在《2016版中國科技期刊引證報告》(核心版)的相關數據為：

1 文獻來源量：438篇；

2 基金論文比：0.42；

3 總被引頻次：3748；

4 影響因子：0.665；

5 學科擴散指標：20.52；

6 學科影響指標：0.95；

7 綜合評價總分：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

國家自然科學基金(81401413)。

李光源(1990—)，女，遼寧鳳城人，在讀碩士。研究方向：超聲心動圖新技術在完全性左束支傳導阻滯中的應用。

E-mail: liguangyuan900914@sohu.com

馬春燕，中國醫科大學附屬第一醫院心血管超聲科，110001。E-mail: mcy_echo@163.com

2016-08-29

2017-01-05