Endovascular Therapy of Symptomatic Innominate-Subclavian Arterial Occlusive Lesions

Abstract

The purpose of this study was to determine the safety and efficacy of angioplasty and stenting for symptomatic innominate-subclavian lesions by review of records of symptomatic patients undergoing angioplasty and stenting of high-grade lesions (>80%) of the innominate and subclavian arteries. Follow-up consisted of history (symptoms) and physical examination (pulses and blood pressures) at 1, 3, 6, and then every 12 months plus an annual duplex ultrasound examination. Between 1998 to 2003, 25 patients (27 lesions) were treated. Ages ranged from 48 to 89 years. Symptoms included vertebrobasilar/steal (15), claudication (6), ischemia (4), and coronary artery bypass grafting/left internal mammary artery (2). There were 7 occlusions and 20 high-grade stenoses. Access was attempted via brachial cutdown (19) or percutaneous puncture of the brachial (2) or femoral arteries (10). Twenty-two lesions were stented with either self-expanding (13) or balloon-expandable (9) stents. Technical success was 89%; 3 occluded lesions could not be crossed owing to complete occlusion. The remaining 4 occlusions were all crossed via a retrograde approach. The mean difference in systolic blood pressure between upper limbs decreased from 36 mm Hg (preprocedure) to 10 mm Hg (postprocedure). There were no procedure-related complications. Mean follow-up was 18 months (range 1–62 months). One patient died 4 months after the procedure secondary to complications from pulmonary surgery unrelated to the percutaneous transluminal angioplasty/stent. Of the 4 successfully treated occlusions, 2 were followed up to 3 years with continued patency. Three patients developed recurrent stenoses documented by duplex examination. However, these patients remained asymptomatic and were not treated. Endovascular management of high-grade lesions of the subclavian or innominate arteries is safe and efficacious and may be considered as a first line of therapy. Continued follow-up is needed to assess long-term patency.

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