摘要
目的：应用二维及多普勒超声，定量单纯性肥胖儿童颈动脉的结构和血流及其临床意义。方法：对60例肥胖儿童（脂肪肝组30例，非脂肪肝组30例）和30名正常儿童进行二维超声测量颈总动脉（CCA）的内径（d）和内膜厚度（IMT），以及颈内动脉（ICA）、颈外动脉（ECA）及椎动脉（VA）内径；多普勒超声测量峰值流速（Vs）、舒张期流速（Vd）、平均流速（Vm）、阻力指数（RI）和峰值流速与舒张末期流速的比值（S/D）。结果：①肥胖儿童的CCA IMT比对照组明显增高，差异有统计学意义（P＜0.05）。受检者IMT与体质量指数（BMI）呈线性正相关，r=0.60，P＜0.01。②肥胖儿童的血流速度（CCA-Vs、ICA-Vd、ECA-Vd）与正常对照组比较均明显减低（P＜0.05），而血管阻力（ICA-RI、ECA-RI、ECA-S/D）明显增高（P＜0.05），差异均有统计学意义；其中脂肪肝组部分颈动脉血流速度（CCA-Vm、ECA-Vs、ECA-Vm、VA-Vs）与正常对照组比较均明显减低，差异有统计学意义（P＜0.05）。结论：单纯性肥胖儿童存在颈动脉的结构及血流动力学变化，超声对定量检测血管功能的损伤有重要临床意义。
Abstract
Objective: To study the structure and blood flow of carotid artery in children with simple obesity by B-mode and Doppler ultrasound. Methods: The diameter(d) of common carotid artery(CCA), internal carotid artery(ICA), external carotid artery(ECA) and vertebral artery(VA), and intimal-medial thickness(IMT) of CCA were measured in 60 obese children and 30 normal children in the control group by B-dimensional ultrasound. Systolic peak velocity(Vs), diastolic velocity(Vd), mean flow velocity(Vm), RI and S/D were measured by Doppler ultrasound. Results: ①The IMT of CCA in obese group was significantly higher than those of the control group, but there was no difference between the fatty liver group and nonfatty liver group(P﹥0.05). There was a positive linear correlation between IMT and BMI. ②CCA-Vs, ICA-Vd and ECA-Vd in obesity group were significantly lower than those in the control group, and carotid resistance(ICA-RI, ECA-RI, ECA-S/D) was higher in obseity than that of the control group(P<0.05). Conclusion: Carotid structure and blood flow are changed in obese children. Ultrasound technology can evaluate the characteristics in obese children.
关键词
颈动脉 /
儿童 /
体重 /
脂肪肝 /
超声检查 /
多普勒 /
彩色
Key words
Carotid arteries /
Child /
Body weight /
Fatty liver /
Ultrasonography /
Doppler /
color
王 娟;夏 焙;李薇玢;易 玲;胡烈榛;林 洲;何学智.
单纯性肥胖儿童颈动脉的超声研究[J]. 中国临床医学影像杂志. 2013, 24(2): 81-84
WANG Juan;XIA Bei;LI Wei-bin;YI Ling;HU Lie-zhen;LIN Zhou;HE Xue-zhi.
B-mode and Doppler ultrasonography of carotid artery in obese children[J]. Journal of China Clinic Medical Imaging. 2013, 24(2): 81-84
中图分类号：
Ｒ725.75
Ｒ331.33
Ｒ445.1
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