采用回声跟踪技术测量主动脉弓扩张波。

Measurement of aortic arch distension wave with the echo-track technique.

作者信息

Studinger P, Lénárd Z, Reneman R, Kollai M

机构信息

Clinical Research Department and Second Institute of Physiology, Semmelweis University of Medicine, Budapest, Hungary.

出版信息

Ultrasound Med Biol. 2000 Oct;26(8):1285-91. doi: 10.1016/s0301-5629(00)00264-7.

DOI:10.1016/s0301-5629(00)00264-7

PMID:11120366

Abstract

The aim of this study was to use the echo-track method for measuring aortic arch diameter, distension waveform and elastic parameters. Data were obtained from 50 healthy volunteers of 32 +/- 15 y (mean +/- 1 SD). The aortic arch was interrogated from the suprasternal position with M-mode ultrasonography using a 3.5-MHz transducer; diameter and distension waves were determined by means of an echo-track algorithm (WTS, Pie Medical); arterial blood pressure was measured in the arm with sphygmomanometry. Aortic arch diameter, distension, distensibility and compliance were 24.55 +/- 2.99 mm, 2199 +/- 726 micrometer, 3.9 +/- 1.4. 10(-3) mmHg(-1) and 1.86 +/- 0.61 mm(2). mmHg(-1), respectively. Intrasession, interobserver and intersession variability was less than 10%, 10% and 18%, respectively. It is concluded that aortic arch distension wave can be recorded noninvasively with acceptable reproducibility, allowing assessment of aortic elastic parameters, and yielding insight into pressure wave reflection within the arterial system.

摘要

本研究的目的是使用回声跟踪法测量主动脉弓直径、扩张波形和弹性参数。数据来自50名年龄为32±15岁（平均±1标准差）的健康志愿者。使用3.5MHz探头通过胸骨上位置的M型超声心动图对主动脉弓进行检查；直径和扩张波通过回声跟踪算法（WTS，派伊医疗）确定；用血压计测量手臂的动脉血压。主动脉弓直径、扩张、扩张性和顺应性分别为24.55±2.99mm、2199±726μm、3.9±1.4×10⁻³mmHg⁻¹和1.86±0.61mm²·mmHg⁻¹。在同一检查者内、不同检查者间和不同检查期间的变异性分别小于10%、10%和18%。结论是，主动脉弓扩张波可以通过无创方式记录，具有可接受的重复性，能够评估主动脉弹性参数，并深入了解动脉系统内的压力波反射情况。