학술대회안내사전등록초록등록안내초록등록/관리숙박 및 교통
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Subintimal Angioplasty of Long Superficial Femoral Artery Occlusion Combined With Stenting of Proximal Entry Site
Cardiology Division, Yonsei Cardiovascular Center & Research Institute Yonsei University College of medicine
Young-Guk Ko, Yangsoo Jang, Dong-Hoon Choi, Do-Yun Lee, Won-Heum Shim
Background: Subintimal angioplasty of long superficial femoral artery (SFA) was reported to be feasible with relatively high success rates, however showed disappointing durability. We investigated whether combined stenting of proximal entry site into subintimal channel could improve patency of the new created channel. Methods: Subintimal angioplasty of SFA was attempted in 29 limbs of 27 patients (23 males, age 64.59.3 years). Eleven lesions were associated with pedal ulcer (Fontaine class IV) had and 18 lesions with severe claudication of <200 m (class IIb). Most patients had comorbidities such as hypertension (n=19), DM (n=18) or CAD (n=19). Multi-segmental arterial obstructive lesions were present in 22 limbs. All target lesions were chronic occlusions of 21.5±7.6 cm length. Angioplasty was performed via antegrade ipsilateral or retrograde contralateral common femoral artery puncture. Results: Subintimal angioplasty was successful in 27 of 29 limbs (92.9%). One procedural failure was from an inability to reenter the patent distal lumen. There was no procedure-related complication. Self-expandable nitinol stents (diameter 7.9±1.0 mm, length 75.3±17.6 mm) were implanted in 27 lesions (1.38±0,77 stents/lesion). The residual pressure gradient over the treated segment was 7.1±5.9 mmHg. Post-procedural ankle-brachial index rose from 0.43±0.19 at baseline to 0.70±0.17. Clinical follow-up over a mean period of 8.1±2.1 months, symptomatic patency rate was 81.5%. Repeat percutaneous revascularization was required in 2 patients. Conclusion: Subintimal angioplasty was feasible and safe and achieved good early results for revascularization of long segment lower limb artery occlusions. Long-term follow-up is needed to prove its efficacy.


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