Tianjin Medical Journal ›› 2023, Vol. 51 ›› Issue (6): 662-667.doi: 10.11958/20221665

• Applied Research • Previous Articles     Next Articles

The study of QAS combined with QIMT technology on carotid atherosclerosis in patients with normal high blood pressure

ZHANG Wenjing1(), WEN Dehui2,, ZHENG Yingjuan2, LI Chaoxi2, NIU Yajun2, MIAO Qing1   

  1. 1 Hebei North University, Zhangjiakou 075000, China
    2 Department of Ultrasound, the First Affiliated Hospital of Hebei North University
  • Received:2022-10-14 Revised:2023-02-03 Published:2023-06-15 Online:2023-06-20
  • Contact: E-mail:15530396808@163.com

Abstract:

Objective To evaluate structure and function of carotid artery in patients with high-normal blood pressure by quality arterial stiffness (QAS) combined with quality intima media thickness (QIMT). Methods According to blood pressure levels, patients who underwent carotid ultrasound and QAS combined with QIMT were divided into the normal blood pressure group (n=82), the normal high-value blood pressure group (n=90) and the hypertension group (n=68). The elastic parameters of bilateral carotid artery were measured by QAS technique, including dilation coefficient (DC), compliance coefficient (CC), stiffness coefficient (α, β) and pulse wave conduction velocity (PWV). The internal media thickness (IMT) of bilateral carotid arteries was measured by QIMT technique. Body mass index (BMI), total cholesterol (TC), triglyceride (TG), high density lipoprotein cholesterol (HDL-C) and low density lipoprotein cholesterol (LDL-C) were collected. Carotid artery elastic parameters and IMT were compared between different gender groups. The left and right carotid artery elastic parameters in patients with normal high blood pressure and the carotid artery elastic parameters and IMT with different blood pressure levels were also compared in different groups. The correlation between blood lipid and each parameter was analyzed. Results The IMT of carotid artery was higher in men with normal high blood pressure than that in women (P<0.05). There were no significant differences in IMT, DC, CC, α, β and PWV between left and right carotid arteries. Compared with the normal blood pressure group, the IMT, α, β and PWV were increased in the normal high blood pressure group and the hypertension group, while DC and CC were decreased (P<0.05). HDL-C was positively correlated with DC and CC, but negatively correlated with α, β and PWV in the normal high-value blood pressure patients (P<0.01). LDL-C was negatively correlated with DC and CC, but positively correlated with α, β and PWV in the normal high-value blood pressure group (P<0.01). Conclusion QAS combined with QIMT shows that carotid artery elasticity is decreased and IMT is thickened in patients with high normal blood pressure.

Key words: hypertension, vascular stiffness, carotid intima-media thickness, normal high blood pressure

CLC Number: