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Heavily Calcified Occlusive Lesions of the Iliac Artery: Long-term Patency and CT Findings after Stent Placement.
MedLine Citation:
PMID:  21641816     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
PURPOSE: To evaluate the influence of heavy calcification on iliac arterial stent expansion and patency and to define the spatial relationship between the stent and heavy calcifications on computed tomography (CT). MATERIALS AND METHODS: Thirteen patients (11 men, two women; mean age, 66.5 y) with 14 heavily calcified iliac arteries received primary stent treatment between 1998 and 2008. Anatomic success was defined by less than 30% residual stenosis on final follow-up CT angiography. Hemodynamic success was defined as an increase in the ankle-brachial index (ABI) of at least 0.15 versus baseline. Clinical success was defined by achievement of clinical improvement of at least one clinical category. Stent patency; anatomic, hemodynamic, and clinical success rate; morphology of heavy calcifications; calcium score; and stent geometry were evaluated. RESULTS: Stents were successfully inserted in all cases. During a mean follow-up of 33.6 months (range, 8-55 mo), the stent-implanted iliac arteries remained anatomically patent in all patients on final follow-up. The anatomic, hemodynamic, and clinical success rates were 28.6%, 60%, and 78.6%, respectively. Mean ABIs were 0.68 ± 0.22 before the procedure and 0.91 ± 0.23 after the procedure (P = .021). Mean luminal stenosis measurements were 77.9% before the procedure and 47.9% after the procedure (P = .008). CONCLUSIONS: Iliac stents in heavily calcified lesions showed hemodynamically significant residual stenosis in a considerable number of cases. However, stent patency was not affected even with incomplete expansion of the stent.
Authors:
Il Soo Chang; Kwang Bo Park; Young Soo Do; Hong Suk Park; Sung Wook Shin; Sung Ki Cho; Sung Wook Choo; In-Wook Choo; Dong-Ik Kim; Young Wook Kim
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-6-3
Journal Detail:
Title:  Journal of vascular and interventional radiology : JVIR     Volume:  -     ISSN:  1535-7732     ISO Abbreviation:  -     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-6-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9203369     Medline TA:  J Vasc Interv Radiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 SIR. Published by Elsevier Inc. All rights reserved.
Affiliation:
Department of Radiology and Cardiac and Vascular Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-dong, Gangnam-Gu, Seoul 135-710, Korea.
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