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Kim HB, Choi YH, So YH, Min SK, Kim HC, Kim YI, Park JH, Chung JW. Tissue responses to endovascular stent grafts for saccular abdominal aortic aneurysms in a canine model. J Korean Med Sci 2012; 27:1170-6. [PMID: 23091313 PMCID: PMC3468752 DOI: 10.3346/jkms.2012.27.10.1170] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Accepted: 08/14/2012] [Indexed: 11/20/2022] Open
Abstract
We investigated tissue responses to endoskeleton stent grafts for saccular abdominal aortic aneurysms (AAAs) in canines. Saccular AAAs were made with Dacron patch in 8 dogs, and were excluded by endoskeleton stent grafts composed of nitinol stent and expanded polytetrafluoroethylene graft. Animals were sacrificed at 2 months (Group 1; n = 3) or 6 months (Group 2; n = 5) after the placement, respectively. The aortas embedding stent grafts were excised en bloc for gross inspection and sliced at 5 to 8 mm intervals for histopathologic evaluation. Stent grafts were patent in all except a dog showing a thrombotic occlusion in Group 2. In the 7 dogs with patent lumen, the graft overhanging the saccular aneurysm was covered by thick or thin thrombi with no endothelial layer, and the graft over the aortic wall was completely covered by neointima with an endothelial layer. Transgraft cell migration was less active at an aneurysm than at adjacent normal aorta. In conclusion, endoskeleton stent grafts over saccular aneurysms show no endothelial coverage and poor transgraft cell migration in a canine model.
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Affiliation(s)
- Hyun Beom Kim
- Department of Radiology, National Cancer Center, Goyang, Korea
| | - Young Ho Choi
- Department of Radiology, Seoul National University Boramae Hospital, Seoul, Korea
| | - Young Ho So
- Department of Radiology, Seoul National University Boramae Hospital, Seoul, Korea
| | - Seung-Kee Min
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Hyo-Cheol Kim
- Department of Radiology and Institute of Radiation Medicine, Seoul National University College of Medicine, Clinical Research Institute, Seoul, Korea
| | - Young Il Kim
- Department of Radiology and Institute of Radiation Medicine, Seoul National University College of Medicine, Clinical Research Institute, Seoul, Korea
| | - Jae Hyung Park
- Department of Radiology and Institute of Radiation Medicine, Seoul National University College of Medicine, Clinical Research Institute, Seoul, Korea
| | - Jin Wook Chung
- Department of Radiology and Institute of Radiation Medicine, Seoul National University College of Medicine, Clinical Research Institute, Seoul, Korea
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Early Results with the Use of Heparin-bonded Stent Graft to Rescue Failed Angioplasty of Chronic Femoropopliteal Occlusive Lesions: TASC D Lesions Have a Poor Outcome. Cardiovasc Intervent Radiol 2012; 35:1023-8. [DOI: 10.1007/s00270-012-0400-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Accepted: 04/08/2012] [Indexed: 10/28/2022]
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Yiu WK, Aruny J, Cheng S, Sumpio B. In–Vitro model for evaluation of the effects of supercooling and re-warming on vascular cells. Int J Angiol 2011. [DOI: 10.1007/s00547-005-2055-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Kougias P, Chen A, Cagiannos C, Bechara CF, Huynh TT, Lin PH. Subintimal placement of covered stent versus subintimal balloon angioplasty in the treatment of long-segment superficial femoral artery occlusion. Am J Surg 2009; 198:645-9. [DOI: 10.1016/j.amjsurg.2009.07.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2009] [Revised: 07/24/2009] [Accepted: 07/24/2009] [Indexed: 10/20/2022]
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França LHG, Pereira AH. Atualização sobre endopróteses vasculares (stents): dos estudos experimentais à prática clínica. J Vasc Bras 2008. [DOI: 10.1590/s1677-54492008000400010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Atualmente, o tratamento das doenças vasculares periféricas é uma das áreas da medicina de maior expansão. O número de intervenções vasculares aumenta e os resultados das novas técnicas endovasculares estão muito próximos aos das tradicionais cirurgias vasculares. Embora a angioplastia ofereça bons resultados em curto prazo, o implante de stents procura melhorar o sucesso do procedimento e estender o seu uso a um número maior de pacientes com doença vascular periférica. Entretanto, a sua utilização ainda é controversa. O implante de stents no sistema aorto-ilíaco tem bons resultados; porém, a sua indicação para as lesões femoro-poplíteas ainda é discutida. Além disso, o rápido desenvolvimento de stents e sua escolha para uso no sistema vascular periférico têm sido uma difícil tarefa para o cirurgião endovascular. Muitos fatores influenciam a escolha do stent, e um amplo conhecimento desse material é essencial. Tal escolha depende da avaliação pré-operatória, da localização e das características da lesão e também do uso do stent primário ou seletivo. Nesse trabalho, são realizadas revisão do histórico do desenvolvimento dos stents, desde os estudos experimentais até os ensaios clínicos e também discussão sobre a sua aplicação no tratamento das doenças vasculares periféricas.
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Saxon RR, Dake MD, Volgelzang RL, Katzen BT, Becker GJ. Randomized, multicenter study comparing expanded polytetrafluoroethylene-covered endoprosthesis placement with percutaneous transluminal angioplasty in the treatment of superficial femoral artery occlusive disease. J Vasc Interv Radiol 2008; 19:823-32. [PMID: 18503895 DOI: 10.1016/j.jvir.2008.02.008] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2007] [Revised: 02/02/2008] [Accepted: 02/04/2008] [Indexed: 11/16/2022] Open
Abstract
PURPOSE To compare the safety and effectiveness of the Viabahn endoprosthesis with that of percutaneous transluminal angioplasty (PTA) alone in the treatment of symptomatic peripheral arterial disease (PAD) affecting the superficial femoral artery (SFA). MATERIALS AND METHODS From 1998 to 1999, patients with symptomatic SFA PAD were enrolled in a prospective, multicenter randomized study and underwent either PTA alone (n = 100) or PTA followed by stent-graft placement (expanded polytetrafluoroethylene/nitinol self-expanding stent-graft) (n = 97) for stenoses or occlusions of the SFA that were 13 cm long or shorter. At baseline, there were no significant differences between the PTA and stent-graft treatment groups, including chronic limb ischemia status and treated lesion length. RESULTS The stent-graft group had a significantly higher technical success rate (95% vs 66%, P < .0001) and 1-year primary vessel patency rate at duplex ultrasonography (65% vs 40%, P = .0003). A patency benefit was seen for lesions at least 3 cm long. At 12 months, chronic limb ischemia status was 15% further improved for the stent-graft group (P = .003). There were no significant differences between treatment groups with regard to the occurrence of early or late major adverse events. CONCLUSIONS In this multicenter study, the patency, technical success, and clinical status results obtained with stent-grafts were superior to those obtained with PTA alone.
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Affiliation(s)
- Richard R Saxon
- Department of Diagnostic Imaging and Interventional Radiology, San Diego Cardiac and Vascular Institute, Tri-City Medical Center, 4002 Vista Way, Oceanside, CA 92056, USA.
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Dorsett-Martin WA, Hester RL. Sex hormones and aortic wall remodeling in an arteriovenous fistula. ACTA ACUST UNITED AC 2007; 4:157-69. [PMID: 17707849 DOI: 10.1016/s1550-8579(07)80029-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/31/2007] [Indexed: 11/27/2022]
Abstract
BACKGROUND An arteriovenous fistula (AVF) creates high blood flow through the artery and fistula. With this high flow, there is flow-induced remodeling and an increase in diameter, but no intimal hyperplasia. Estrogen has been shown to modify vascular remodeling, decreasing intimal hyperplasia after endothelial injury. OBJECTIVE These experiments tested the hypothesis that estrogen administration would decrease wall thickness in an AVF model. Because estrogen may decrease wall thickness, we also tested the hypothesis that testosterone would increase wall thickness. METHODS A fistula was created between the abdominal aorta and the inferior vena cava in Sprague-Dawley rats to generate high blood flow conditions in the aorta. Four groups of female animals were examined: sham, control with AVF ovariectomized (OVX) with AVF and OVX plus testosterone with AVF Four groups of male animals were also examined: sham, control with AVF castrated with AVF and castrated plus estrogen with AVF Five weeks after creation of the AVF, the aortas were collected and fixed; wall thickness was measured both proximal and distal to the AVF. RESULTS Ovariectomy resulted in a significant decrease in estrogen levels (P < 0.01). Testosterone administration tended to increase testosterone levels in the OVX females, but values did not approach levels observed in the control males. No difference was noted in the proximal wall thickness between the control and the OVX animals. The OVX females receiving testosterone exhibited a significant increase in both proximal and distal wall thickness compared with control females (P < 0.001). In the male animals, there was no significant change in aortic wall thickness in the castrated rats compared with the controls. Estrogen administration in the castrated males resulted in a significant decrease in wall thickness in the proximal and distal aorta (P < 0.05). CONCLUSION These studies suggest that, in a model of vascular remodeling, estrogen administration decreases wall thickness, and testosterone administration increases wall thickness.
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Affiliation(s)
- Wanda A Dorsett-Martin
- Department of Surgery, University of Mississippi Medical Center, Jackson, Mississippi 39216-4505, USA.
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Bray PJ, Bray AE. Thrombogenicity of the Hemobahn/Viabahn in the SFA. J Endovasc Ther 2006; 13:783-4. [PMID: 17154713 DOI: 10.1583/06-1977.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ruef J, Hofmann M, Haase J. Endovascular Interventions in Iliac and Infrainguinal Occlusive Artery Disease. J Interv Cardiol 2004; 17:427-35. [PMID: 15546296 DOI: 10.1111/j.1540-8183.2004.04086.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Percutaneous endovascular procedures are increasingly applied to treat symptomatic peripheral occlusive artery disease. While the primary technical success and recanalization rates in iliac and infrainguinal interventions are high, differences in the long-term patency rates exist with respect to the anatomic localization, separating the iliac, femoropopliteal, and infrapopliteal arterial regions. In iliac arteries, even complex lesions can be recanalized with good long-term patency rates, especially when using self-expanding nitinol stents. In the infrainguinal arteries the method of choice is still under debate (e.g., balloon angioplasty vs stent implantation). A high restenosis rate represents one of the major limitations in femoropopliteal and infrapopliteal interventions. Therefore, additional methods and treatment strategies for peripheral interventions with the potential for future applications are under investigation and will be discussed such as drug-eluting stents, brachytherapy, subintimal angioplasty, laser angioplasty, atherectomy/thrombectomy, cutting balloon, polytetrafluoroethylene (PTFE)-covered stent grafts, biodegradable stents, and cryoplasty. The increasing amount of data on successful peripheral interventions supports the necessity to adapt and reevaluate the current consensus guidelines that were put together in 2000.
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Affiliation(s)
- Johannes Ruef
- Red Cross Hospital Cardiology Center, Frankfurt, Germany.
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Bray PJ, Robson WJ, Bray AE. Percutaneous treatment of long superficial femoral artery occlusive disease: efficacy of the Hemobahn stent-graft. J Endovasc Ther 2003; 10:619-28. [PMID: 12932177 DOI: 10.1177/152660280301000331] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE To assess the efficacy of the Hemobahn stent-graft in the percutaneous treatment of long occlusive lesions of the superficial femoral artery (SFA). METHODS Fifty-nine limbs in 54 patients (42 men; mean age 73.3+/-8.2 years, range 55.2-91.3) with 59 symptomatic SFA occlusions >10 cm in length were selected for percutaneous treatment with the Hemobahn stent-graft. The treated SFA was assessed for patency and degree of stenosis by color-flow duplex ultrasound prior to discharge and at 1, 3, and 6 months and yearly thereafter. The actuarial life-table method was used to derive primary and secondary patency rates. RESULTS Primary technical success was achieved in 56 (95%) of 59 limbs on an intention-to-treat basis (2 access and 1 device failures). In the first 30 days, 4 (6.8%) stent-graft thromboses and 5 (8.5%) minor technical difficulties occurred. Up to 1 year, there were 15 (25.4%) primary occlusions, 7 (11.9%) of which were associated with restenosis. Cumulative primary patencies were 88%, 67%, and 58% at 1, 6, and 12 months, respectively; secondary patencies were 92%, 82%, and 73% at the same intervals. There was no statistically significant difference (p<0.05) in patency (primary or secondary) with respect to presenting symptoms, lesion length, stent-graft length, or distal runoff. CONCLUSIONS Symptomatic long occlusive lesions of the SFA treated percutaneously with the Hemobahn stent-graft achieved good outcomes initially with a low complication rate. Primary and secondary patencies were similar to those reported for open synthetic femoropopliteal bypass procedures.
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Affiliation(s)
- Peter J Bray
- CardioVascular Centre, Newcastle, NSW, Australia.
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Bray PJ, Robson WJ, Bray AE. Percutaneous Treatment of Long Superficial Femoral Artery Occlusive Disease:Efficacy of the Hemobahn Stent-Graft. J Endovasc Ther 2003. [DOI: 10.1583/1545-1550(2003)010<0619:ptolsf>2.0.co;2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Jahnke T, Andresen R, Müller-Hülsbeck S, Schäfer FKW, Voshage G, Heller M, Brossmann J. Hemobahn stent-grafts for treatment of femoropopliteal arterial obstructions: midterm results of a prospective trial. J Vasc Interv Radiol 2003; 14:41-51. [PMID: 12525585 DOI: 10.1097/01.rvi.0000052290.26939.cb] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
Abstract
PURPOSE To report a prospective study to evaluate safety, effectiveness, and midterm patency of self-expanding stent-grafts in patients with femoropopliteal occlusive disease. MATERIALS AND METHODS Sixty-three Hemobahn stent-grafts were used in 52 patients for treatment of medium- or long-segment (>3 cm) occlusions (82.7%) and stenoses (17.3%) of the femoropopliteal artery. The mean length of vessel segments covered was 10.9 cm +/- 5.13. Follow-up with documentation of clinical symptoms, assessment of Rutherford clinical stage of peripheral vascular disease, and color-coded duplex sonography was performed at discharge, at 1, 3, 6, 12, 18, and 24 months after implantation, and yearly thereafter. Mean follow-up duration was 23.8 months +/- 6.9 (range, 8-36 mo). Follow-up data at 12 and 24 months after treatment were available for 47 of 52 (90.4%) and 31 of 52 patients (59.6%), respectively. RESULTS Device implantation was technically successful in all 52 patients, yielding an overall technical success rate of 100%. Procedure-related complications were observed in 12 of 52 patients (23.1%) and consisted of distal embolization (n = 4, 7.7%), minor groin hematoma (n = 7, 13.5%), and arteriovenous fistula (n = 1, 1.9%), but prolonged hospitalization and further medical, interventional, or surgical measures were not required. Stent-graft placement induced an initial improvement of the mean resting ankle-brachial index from 0.54 +/- 0.12 to 0.89 +/- 0.14 (P <.01). Primary patency rates at 12 and 24 months were 78.4% +/- 5.8 and 74.1% +/- 6.2, respectively. Primary assisted patency rates were 82.4% +/- 5.3 at 12 months and 80.3% +/- 5.6 at 24 months. Secondary patency rates at 12 and 24 months were 88.3% +/- 4.5 and 83.2% +/- 5.5, respectively. There was no significant difference (log-rank test, P >.3) between primary patency rates in patients grouped according to lengths of implanted grafts (ie, length of the treated lesions). CONCLUSION Endovascular placement of Hemobahn stent-grafts for percutaneous treatment of medium- to long-segment high-grade stenoses and occlusions of the femoropopliteal artery is a safe procedure with excellent initial success rates and promising midterm results.
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Affiliation(s)
- Thomas Jahnke
- Klinik für Diagnostische Radiologie, Christian-Albrechts-Universität Kiel, Arnold-Heller Str. 9, 24105 Kiel, Germany.
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Affiliation(s)
- W Cwikiel
- Department of Radiology, University of Michigan Hospital, Ann Arbor 48109, USA
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Toyota N, Pavcnik D, VanAlstine W, Uchida BT, Timmermans HA, Yin Q, Kaufman JA, Keller FS, Ito K, Rösch J. Comparison of small intestinal submucosa-covered and noncovered nitinol stents in sheep iliac arteries: a pilot study. J Vasc Interv Radiol 2002; 13:489-98. [PMID: 11997357 DOI: 10.1016/s1051-0443(07)61529-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
PURPOSE To compare the biocompatibility and performance of nitinol endografts covered externally or internally with small intestinal submucosa (SIS) with bare nitinol stents in medium-sized arteries. MATERIALS AND METHODS Eighteen nitinol Zilver stents were used: six externally SIS-covered endografts (ECEs), six internally SIS-covered endografts (ICEs), and six bare stents (BSs). Devices were implanted in the balloon-injured external iliac arteries (EIAs) of nine female sheep via carotid approach. Arteriograms were obtained before and after implantation and before animal sacrifice at 1, 3, and 6 months. Histologic studies of explanted specimens were performed. RESULTS Implantation of all BSs, ECEs, and ICEs was successful, but slight luminal narrowing of 19% +/- 5.3% (range, 12%-28%) was seen in ICEs on postimplantation angiograms. At sacrifice, all six BSs and ECEs were patent, with BSs showing a mean angiographic luminal narrowing of 8.4% +/- 7.2% (range, 0%-18%) and ECEs showing a mean angiographic luminal narrowing of 16% +/- 7.5% (range, 6.5%-26%) as a result of neointimal hyperplasia. Four ICEs showed luminal narrowing of 21% +/- 17% (range, 0%-35%) as a result of marked neointimal hyperplasia and two were occluded, one at 3 months and the other at 6 months. ECEs and BSs showed approximately 80% lumen endothelialization at 1 month, which increased to 100% at 3 and 6 months. ICEs did not show complete endothelialization. CONCLUSION The BS had the least vessel wall reaction. ECEs exhibited early endothelialization with early mild to moderate wall reaction decreasing at the late study stages. ICEs showed extensive wall reaction, possibly as a result of technical problems with SIS attachment.
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Affiliation(s)
- Naoyuki Toyota
- Dotter Interventional Institute, Oregon Health Sciences University, L342, 3181 SW Sam Jackson Park Rd., Portland, OR 87201, USA
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Odurny A. Radiological Investigation and Treatment of the Critically Ischemic Limb—A Review. INT J LOW EXTR WOUND 2002; 1:33-42. [PMID: 15871950 DOI: 10.1177/153473460200100105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The contribution of radiological investigation and treatment in the management of the critically ischemic lower limb is reviewed. The methods of classifying and assessing the cause, level, and severity of the arterial disease causing the ischemia are discussed with comparison of the relative merits of the various invasive and noninvasive techniques of investigation. The development of the methods of interventional radiological management is described with an indication of the relative success of the different techniques. Newer interventional developments, including intravascular brachytherapy and gene therapy are discussed.
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Affiliation(s)
- Allan Odurny
- Southampton General Hospitals Trust NHS, Southampton, UK.
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Jahnke T, Voshage G, Müller-Hülsbeck S, Grimm J, Heller M, Brossmann J. Endovascular placement of self-expanding nitinol coil stents for the treatment of femoropopliteal obstructive disease. J Vasc Interv Radiol 2002; 13:257-66. [PMID: 11875085 DOI: 10.1016/s1051-0443(07)61718-7] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
PURPOSE To report on a prospective two-center study to evaluate safety and effectiveness of a self-expanding nitinol coil stent in patients with femoropopliteal obstructive disease. MATERIALS AND METHODS The IntraCoil nitinol stent was used in 37 patients (28 men and nine women; mean age, 62.4 y plus minus 10.7; range, 43-81 y) presenting with high-grade stenoses (n = 23) or short (<3 cm) occlusions (n = 17) of the superficial femoral artery (SFA; n = 33) or popliteal artery (n = 4). Indications for stent placement were significant residual stenosis (>30%) or dissection after angioplasty. Follow-up evaluations with measurement of the Doppler ankle-brachial index (ABI), assessment of Rutherford clinical stage, and color-coded duplex sonography were performed at discharge and 1, 3, 6, 12, and 18 months thereafter. Primary endpoints of the study were immediate technical and clinical success and 1-year patency. RESULTS Initial technical success was achieved in all patients. In 10 patients (27%), more than one 40-mm-long device had to be implanted for total lesion coverage; in three patients (8.1%), stents were placed in two separate segments of the SFA simultaneously. The total number of stents deployed was 50. Stent placement induced an initial improvement of the ABI from 0.54 plus minus 0.2 to 0.92 plus minus 0.11 (P <.01). Follow-up data for 12 months after treatment are available for 29 of 37 patients (78.4%); mean follow-up is 15.6 months (range, 1-26 mo). Primary patency rates at 6 and 12 months were 97.1% (SE = 2.9) and 86.2% (SE = 6.5). The primary assisted patency rate was 100% at 12 months. CONCLUSION Endovascular placement of the IntraCoil self-expanding nitinol coil stent for salvage of failed angioplasty in patients with femoropopliteal obstructive disease is an effective and safe procedure with promising mid-term results.
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Affiliation(s)
- Thomas Jahnke
- Department of Diagnostic Radiology, University Hospital, Christian-Albrechts-Universität Kiel, Arnold-Heller Strasse 9, 24105 Kiel, Germany.
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