Ultrasound-guided angioplasty in treatment of lower extremity arteriosclerosis obliterans in patients with relative contraindications for DSA / 中国介入影像与治疗学

ABSTRACT

Objective: To explore the clinical value of ultrasound-guided treatment of lower extremity arteriosclerosis obliterans (ASO) in patients with relative contraindications of DSA. Methods: Eighteen not suitable for DSA patients with lower extremity ASO (evolving 20 arteries) were enrolled and treated with ultrasound-guided endovascular interventional therapy. Peak systolic velocity (PSV) was detected before and 24 hours, 3 months, 6 months, 12 months and 24 months after treatment. Statistical analysis was performed to evaluate the total recurrence rate of stenosis and occlusion of the arteries. Results: Among 20 evolved lower extremity arteries, complete occlusion and severe stenosis (the stenosis rate ranged from 70% to 99%) were found in 15 and 5 arteries, respectively. The success rate of ultrasound-guided balloon angioplasty was 40.00% (8/20), while of stent placement was 100% (12/12). There was significant difference of PSV among preoperative and all postoperative time points (F=4.26, P=0.046). Significant differences of PSV were observed between before operation and each time point after operation, 12 months and 24 months after operation compared with 24 hours after operation (all P<0.05). The total recurrence rate at 24 hours, 3 months, 6 months, 12 months and 24 months after operation was 0, 5.00% (1/20), 10.00% (2/20), 20.00% (4/20) and 50.00% (10/20), respectively. Conclusion: Ultrasound-guided endovascular interventional therapy plays an important role for treatment of lower extremity ASO in patients with relative contraindications of DSA.