RESUMEN

Objective:To investigate the effectiveness of vascular ultrasound examination in the diagnosis of subclavian artery stenosis (ASA) combined with vertebral artery stenosis (VSA) and its effects on different types of steal syndrome.Methods:Seventy patients with ASA combined with VSA who received treatment in Zhuji People's Hospital from February 2018 to May 2022 were included in this study. All patients underwent digital subtraction angiography (DSA) and a vascular ultrasound examination. Taking the DSA examination results as the reference standard, the accuracy of vascular ultrasound examination in the classification of ASA and VSA and its consistency with the DSA diagnosis results were evaluated. The detection rate of subclavian artery steal was compared between DSA and vascular ultrasound examination was compared. The correlation between the degree of ASA and the severity of subclavian artery steal was analyzed.Results:The accuracy of vascular ultrasound examination in the diagnosis of different degrees of ASA was 84.62% (11/13), 89.66% (26/29), 95.24% (20/21), and 100.00% (7/7), respectively. The Kappa value, indicating the consistency of vascular ultrasound examination and DSA restults in the diagnosis of ASA, was 0.858 ( P < 0.05). There was a significant difference in the type of subclavian artery steal among patients with different degrees of ASA ( χ2 = 50.71, P < 0.01). The severity of subclavian artery steal was highly positively correlated with the severity of ASA ( r = 0.71, P < 0.001). Conclusion:Vascular ultrasound examination has high diagnostic accuracy for different degrees of ASA and VSA, has high consistency with DSA results, and can increase the detection rate of subclavian artery steal. Vascular ultrasound examination has certain advantages in the early screening and condition monitoring of ASA, VSA, and subclavian artery steal.