Baosheng Guo, Jun Yang, Xiaona Yu, Bing Han, Ying Zhang, Shuxi Gao, Zhaoxia Luan, Ying Li, Weidong Ren, Shoujun Liu
Department of Ultrasonography, Shengjing Hospital of China Medical University, Shenyang, China.
Echocardiography. 2009 Sep;26(8):988-90. doi: 10.1111/j.1540-8175.2009.00960.x.
The aim of this study was to evaluate the usefulness of two-dimensional echocardiography in observing the left ventricular apical thin point (LVATP) and to view the change in thickness and width of the LVATP during the cardiac cycle. Transthoracic echocardiography was performed in 32 healthy adult volunteers to observe the LVATP in an apical three-chamber view. The width and thickness of the LVATP were measured at the end-diastole as well as at the end-systole. With two-dimensional echocardiography, the LVATP could be clearly shown. The width of the LVATP at the end-diastole and end-systole was 3.3 mm +/- 1.4 mm versus 0.9 mm+/-0.4 mm, P < 0.001; the thickness of the LVATP at the end-diastole and end-systole was 1.7 mm +/- 0.6 mm versus 1.8 mm +/- 0.8 mm, P > 0.05. The LVATP can be viewed with two-dimensional echocardiography; the LVATP changes significantly in width during the cardiac cycle, whereas the thickness of the LVATP changes insignificantly.
本研究的目的是评估二维超声心动图在观察左心室心尖薄点（LVATP）方面的实用性，并观察心动周期中LVATP厚度和宽度的变化。对32名健康成年志愿者进行经胸超声心动图检查，以在心尖三腔视图中观察LVATP。在舒张末期和收缩末期测量LVATP的宽度和厚度。通过二维超声心动图，可以清晰显示LVATP。舒张末期和收缩末期LVATP的宽度分别为3.3 mm±1.4 mm和0.9 mm±0.4 mm，P<0.001；舒张末期和收缩末期LVATP的厚度分别为1.7 mm±0.6 mm和1.8 mm±0.8 mm，P>0.05。二维超声心动图可以观察到LVATP；在心动周期中，LVATP的宽度变化显著，而其厚度变化不显著。
