Doppler ultrasound assessment of posterior tibial artery size in humans.
Doppler ultrasound assessment of posterior tibial artery size in humans.
复制标题
多普勒超声评估人类胫后动脉大小。
DOI：
10.1002/jcu.20229
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
McCully,Kevin
中科院分区：
文献类型：
--
作者：
Sabatier,ManningJ;Stoner,Lee;Reifenberger,Matt;McCully,Kevin
PurposeThe difference between structural remodeling and changes in tone of peripheral arteries in the lower extremities has not been evaluated. The purpose of this study was to (1) evaluate the day‐to‐day reproducibility and interobserver reliability (IOR) of posterior tibial artery (PTA) diameter measurements and (2) evaluate the effect of posture on PTA diameter at rest (Drest), during 10 minutes of proximal cuff occlusion (Dmin), and after the release of cuff occlusion (Dmax), as well as range (Dmax − Dmin) and constriction [(Dmax − Drest)/(Dmax − Dmin) × 100] in vivo.MethodsWe used B‐mode sonography to image the PTA during each condition.ResultsDay‐to‐day reliability was good for Drest (intraclass correlation coefficient [ICC] 0.95; mean difference 4.2%), Dmin (ICC 0.93; mean difference 5.4%), and Dmax (ICC 0.99; mean difference 2.2%). The coefficient of repeatability for IOR was 70.5 μm, with a mean interobserver error of 4.7 μm. The seated position decreased Drest (2.6 ± 0.2 to 2.4 ± 0.3 mm;p= 0.002), increased Dmin (2.1 ± 0.2 to 2.4 ± 0.2 mm;p= 0.001), and decreased Dmax (3.1 ± 0.4 to 2.8 ± 0.3 mm;p< 0.001) compared with the supine position. The seated position also decreased arterial range (Dmax − Dmin) from 0.9 ± 0.2 to 0.5 ± 0.1 mm (p= 0.003) and increased basal arterial constriction from 57 ± 19% to 105 ± 27% (p= 0.007).ConclusionsThe system employed for measuring PTA diameter yields unbiased and consistent estimates. Furthermore, lower extremity arterial constriction and range change with posture in a manner consistent with known changes in autonomic activity. © 2006 Wiley Periodicals, Inc. J Clin Ultrasound 34:223–230, 2006
