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中华医学超声杂志(电子版) ›› 2020, Vol. 17 ›› Issue (04) : 320 -326. doi: 10.3877/cma.j.issn.1672-6448.2020.04.006

所属专题: 文献

心血管超声影像学

冠状动脉慢血流患者左心室旋转及扭转运动特征与心肌血流灌注的相关性分析
张贺彬1, 高枫1, 郑哲岚2,(), 王晓嫚1, 于妲1, 杨寸芯1, 王明伟3   
  1. 1. 310015 杭州师范大学附属医院超声科
    2. 310003 杭州,浙江大学附属第一医院心血管超声中心
    3. 310015 杭州师范大学附属医院心血管内科
  • 收稿日期:2019-06-09 出版日期:2020-04-01
  • 通信作者: 郑哲岚
  • 基金资助:
    浙江省医药卫生科技计划项目(2018KY591); 杭州市卫生计生科技计划项目(2018A27)

Characteristics of left ventricular rotation and twist and their correlation with myocardial perfusion in patients with coronary slow flow

Hebin Zhang1, Feng Gao1, Zhelan Zheng2,(), Xiaoman Wang1, Da Yu1, Cunxin Yang1, Mingwei Wang3   

  1. 1. Department of Ultrasonography, the Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, China
    2. Echocardiography and Vascular Ultrasound Center, the First Affiliated Hospital, Zhejiang University, Hangzhou 310003, China
    3. Department of Cardiovascular Medicine, the Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, China
  • Received:2019-06-09 Published:2020-04-01
  • Corresponding author: Zhelan Zheng
  • About author:
    Corresponding author: Zheng Zhelan, Email:
引用本文:

张贺彬, 高枫, 郑哲岚, 王晓嫚, 于妲, 杨寸芯, 王明伟. 冠状动脉慢血流患者左心室旋转及扭转运动特征与心肌血流灌注的相关性分析[J]. 中华医学超声杂志(电子版), 2020, 17(04): 320-326.

Hebin Zhang, Feng Gao, Zhelan Zheng, Xiaoman Wang, Da Yu, Cunxin Yang, Mingwei Wang. Characteristics of left ventricular rotation and twist and their correlation with myocardial perfusion in patients with coronary slow flow[J]. Chinese Journal of Medical Ultrasound (Electronic Edition), 2020, 17(04): 320-326.

目的

应用多巴酚丁胺负荷实时心肌造影超声心动图(RTMCE)结合二维斑点追踪(STE)技术评价冠状动脉慢血流(CSF)患者的心肌血流灌注及左心室旋转、扭转运动特征,并进一步分析二者之间的相关性。

方法

选取2017年1月至2019年3月杭州师范大学附属医院因胸痛行冠状动脉造影的患者54例,冠状动脉造影结果为CSF的患者33例为CSF组,结果正常者21例为对照组。应用二维超声测量常规参数,双平面Simpson法获得左心室舒张末容积(LVEDV)及左心室射血分数(LVEF),应用STE技术测量左心室基底水平旋转角度峰值(R心底)、旋转达峰时间(TPR心底)和左心室心尖水平旋转角度峰值(R心尖)、旋转达峰时间(TPR心尖),并获取左心室扭转角度峰值(LVTW)及旋转延迟时间(RDD)。对所有受试者进行多巴酚丁胺负荷试验,在静息和多巴酚丁胺负荷状态下行RTMCE检查,定量分析得出心肌血容量(A值)、心肌血流速率(β值)、心肌血流量(MBF),并获得心肌血流储备(MFR)。采用Pearson相关分析CSF患者左心室旋转、扭转与心肌血流灌注相关参数之间的相关性。

结果

2组受检者LVEDV、LVEF差异均无统计学意义;与对照组比较,CSF组患者R心尖、LVTW、RDD减小,TPR心尖增大,差异有统计学意义(U=2.707,t=-2.379、-4.988、2.422;P均<0.05)。与对照组比较,静息时CSF组患者β值减小,差异有统计学意义(t=-2.218,P<0.05);负荷状态下β值、MBF减小,差异有统计学意义(t=-3.791、-2.612,P均<0.05);CSF组患者MFR较对照组减小,差异有统计学意义(t=-2.585,P<0.05)。Pearson相关分析表明静息时CSF患者R心尖、LVTW分别与MBF存在相关性(r=0.502、0.462,P均<0.05);负荷状态下R心尖、LVTW分别与MBF存在相关性(r=0.436、0.368,P=0.009、0.035)。

结论

CSF患者存在心肌微循环障碍,其R心尖、LVTW降低,心肌微循环障碍可能是左心室旋转及扭转运动减低的主要决定因素之一。

Objective

To analyze the changes of myocardial perfusion and the characteristics of left ventricular (LV) rotation and LV twist (LVTW) in patients with coronary slow flow (CSF), and to assess the relationship between them by using dobutamine stress real-time myocardial contrast echocardiography (RTMCE) and speckle tracking echocardiography (STE).

Methods

A total of 54 patients who underwent coronary angiography for angina were enrolled at the Affiliated Hospital of Hangzhou Normal University, of whom 33 with CSF were included as a CSF group and 21 with normal coronary angiography findings were included as a control group. After conventional echocardiography, LV end diastolic volume (LVEDV) and LV ejection fraction (LVEF) were measured by the biplane Simpson method. And basal and apical rotation of the LV (Rbasal and Rapical) were calculated via Qlab10.4 analysis software offline, the time to basal and apical peak rotation of the LV (TPRbasal and TPRapical) were calculated through graphics semi-automatically, and LVTW and rotation deformation delay (RDD) were also calculated. RTMCE was performed from the apical 4-, 3-, and 2-chamber views at baseline and after dobutamine stress echocardiography, and parameters including myocardial blood volume (A), myocardial blood velocity (β), myocardial blood flow (MBF), and myocardial flow reserve (MFR) were obtained. The correlation between Rapical/LVTW and MBF/MFR was analyzed.

Results

LVEDV and LVEF had no significant difference between the two groups. Compared with the control group, Rapical, LVTW, and RDD significantly decreased and TPRapical significantly increased in CSF patients (U=2.707, t=-2.379, t=-4.988, and t=2.422, respectively; P<0.05). At baseline, the value of β in the CSF group was significantly lower than that in the control group (t=-2.218, P<0.05). After dobutamine stress test, patients with CSF showed significantly decreased β, MBF, and MFR (t=-3.791, -2.612, and -2.585, respectively; P<0.05) compared with the control group. Pearson correlation analysis revealed that Rapical and LVTW were correlated with MBF both at rest (r=0.502 and 0.462, respectively; P<0.05) and after dobutamine stress test (r=0.436 and 0.368, respectively; P<0.05).

Conclusion

Both Rapical and LVTW are impaired in CSF patients, and coronary microcirculation disorder could be an important contributor to the decrease of left ventricular rotation and twist motion.

图1 超声心动图左心室基底水平、心尖水平旋转角度-时间曲线。图a为基底水平曲线,图示收缩期基底水平各节段呈顺时针方向,峰值以负值表示;图b为心尖水平曲线,图示收缩期心尖水平各节段呈逆时针方向,峰值以正值表示
表1 对照组与CSF组一般临床资料及冠状动脉造影结果比较(±s
表2 对照组与CSF组常规超声心动图参数比较(±s
表3 对照组与CSF组左心室旋转、扭转参数比较(±s
图2 冠状动脉慢血流患者和正常对照者实时心肌超声造影声像图。图a为冠状动脉慢血流患者声像图,图示侧壁心肌灌注曲线低平;图b为正常对照者声像图,图示各节段心肌灌注曲线正常
表4 对照组与CSF组心肌血流灌注参数比较(±s
图3 静息时冠状动脉慢血流患者左心室心尖水平旋转角度峰值与心肌血流量的相关性分析散点图
图4 静息时冠状动脉慢血流患者左心室扭转角度峰值与心肌血流量的相关性分析散点图
图5 负荷状态下冠状动脉慢血流患者左心室心尖水平旋转角度峰值与心肌血流量的相关性分析散点图
图6 负荷状态下冠状动脉慢血流患者左心室扭转角度峰值与心肌血流量的相关性分析散点图
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