Details

Autor(en) / Beteiligte

• Chang, Il Soo, MD
• Park, Kwang Bo, MD
• Do, Young Soo, MD
• Park, Hong Suk, MD
• Shin, Sung Wook, MD
• Cho, Sung Ki, MD
• Choo, Sung Wook, MD
• Choo, In-Wook, MD
• Kim, Dong-Ik, MD
• Kim, Young Wook, MD

Titel

Heavily Calcified Occlusive Lesions of the Iliac Artery: Long-Term Patency and CT Findings After Stent Placement

Ist Teil von

• Journal of vascular and interventional radiology, 2011-08, Vol.22 (8), p.1131-1137.e1

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2011

Quelle

MEDLINE

Beschreibungen/Notizen

• 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.