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Ozaki Y, Hara H, Onuma Y, Katagiri Y, Amano T, Kobayashi Y, Muramatsu T, Ishii H, Kozuma K, Tanaka N, Matsuo H, Uemura S, Kadota K, Hikichi Y, Tsujita K, Ako J, Nakagawa Y, Morino Y, Hamanaka I, Shiode N, Shite J, Honye J, Matsubara T, Kawai K, Igarashi Y, Okamura A, Ogawa T, Shibata Y, Tsuji T, Yajima J, Iwabuchi K, Komatsu N, Sugano T, Yamaki M, Yamada S, Hirase H, Miyashita Y, Yoshimachi F, Kobayashi M, Aoki J, Oda H, Katahira Y, Ueda K, Nishino M, Nakao K, Michishita I, Ueno T, Inohara T, Kohsaka S, Ismail TF, Serruys PW, Nakamura M, Yokoi H, Ikari Y. CVIT expert consensus document on primary percutaneous coronary intervention (PCI) for acute myocardial infarction (AMI) update 2022. Cardiovasc Interv Ther 2022; 37:1-34. [PMID: 35018605 PMCID: PMC8789715 DOI: 10.1007/s12928-021-00829-9] [Citation(s) in RCA: 63] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 11/15/2021] [Indexed: 12/14/2022]
Abstract
Primary Percutaneous Coronary Intervention (PCI) has significantly contributed to reducing the mortality of patients with ST-segment elevation myocardial infarction (STEMI) even in cardiogenic shock and is now the standard of care in most of Japanese institutions. The Task Force on Primary PCI of the Japanese Association of Cardiovascular Interventional and Therapeutics (CVIT) society proposed an expert consensus document for the management of acute myocardial infarction (AMI) focusing on procedural aspects of primary PCI in 2018. Updated guidelines for the management of AMI were published by the European Society of Cardiology (ESC) in 2017 and 2020. Major changes in the guidelines for STEMI patients included: (1) radial access and drug-eluting stents (DES) over bare-metal stents (BMS) were recommended as a Class I indication, (2) complete revascularization before hospital discharge (either immediate or staged) is now considered as Class IIa recommendation. In 2020, updated guidelines for Non-ST-Elevation Myocardial Infarction (NSTEMI) patients, the followings were changed: (1) an early invasive strategy within 24 h is recommended in patients with NSTEMI as a Class I indication, (2) complete revascularization in NSTEMI patients without cardiogenic shock is considered as Class IIa recommendation, and (3) in patients with atrial fibrillation following a short period of triple antithrombotic therapy, dual antithrombotic therapy (e.g., DOAC and single oral antiplatelet agent preferably clopidogrel) is recommended, with discontinuation of the antiplatelet agent after 6 to 12 months. Furthermore, an aspirin-free strategy after PCI has been investigated in several trials those have started to show the safety and efficacy. The Task Force on Primary PCI of the CVIT group has now proposed the updated expert consensus document for the management of AMI focusing on procedural aspects of primary PCI in 2022 version.
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Affiliation(s)
- Yukio Ozaki
- Department of Cardiology, Fujita Health University School of Medicine, Aichi, Japan.
| | - Hironori Hara
- Department of Cardiology, National University of Ireland, Galway (NUIG), Galway, Ireland
- Department of Cardiology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Yoshinobu Onuma
- Department of Cardiology, National University of Ireland, Galway (NUIG), Galway, Ireland
| | - Yuki Katagiri
- Department of Cardiology, Sapporo Higashi Tokushukai Hospital, Sapporo, Japan
| | - Tetsuya Amano
- Department of Cardiology, Aichi Medical University, Aichi, Japan
| | - Yoshio Kobayashi
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Takashi Muramatsu
- Department of Cardiology, Fujita Health University School of Medicine, Aichi, Japan
| | - Hideki Ishii
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Ken Kozuma
- Department of Cardiology, Teikyo University Hospital, Tokyo, Japan
| | - Nobuhiro Tanaka
- Division of Cardiology, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
| | | | - Shiro Uemura
- Cardiovascular Medicine, Kawasaki Medical School, Kurashiki, Japan
| | | | | | - Kenichi Tsujita
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Junya Ako
- Department of Cardiology, Kitasato University Hospital, Sagamihara, Japan
| | - Yoshihisa Nakagawa
- Division of Cardiovascular Medicine, Department of Internal Medicine, Shiga University of Medical Science, Otsu, Japan
| | - Yoshihiro Morino
- Department of Cardiology, Iwate Medical University Hospital, Morioka, Japan
| | - Ichiro Hamanaka
- Cardiovascular Intervention Center, Rakuwakai Marutamachi Hospital, Kyoto, Japan
| | - Nobuo Shiode
- Division of Cardiology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Junya Shite
- Cardiology Division, Osaka Saiseikai Nakatsu Hospital, Osaka, Japan
| | | | | | | | | | | | - Takayuki Ogawa
- Division of Cardiology, The Jikei University School of Medicine, Tokyo, Japan
| | | | | | | | | | | | | | | | | | | | | | | | - Masakazu Kobayashi
- Department of Cardiology, Fujita Health University School of Medicine, Aichi, Japan
| | - Jiro Aoki
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
| | | | | | | | - Masami Nishino
- Division of Cardiology, Osaka Rosai Hospital, Osaka, Japan
| | - Koichi Nakao
- Division of Cardiology, Saiseikai Kumamoto Hospital, Cardiovascular Center, Kumamoto, Japan
| | | | | | - Taku Inohara
- Keio University School of Medicine, Tokyo, Japan
| | - Shun Kohsaka
- Keio University School of Medicine, Tokyo, Japan
| | - Tevfik F Ismail
- Department of Cardiology, Fujita Health University School of Medicine, Aichi, Japan
- King's College London & Guy's and St Thomas' Hospital NHS Foundation Trust, London, UK
| | - Patrick W Serruys
- Department of Cardiology, National University of Ireland, Galway (NUIG), Galway, Ireland
- NHLI, Imperial College London, London, UK
| | - Masato Nakamura
- Division of Cardiovascular Medicine, Ohashi Medical Center, Toho University School of Medicine, Tokyo, Japan
| | - Hiroyoshi Yokoi
- Cardiovascular Center, Fukuoka Sanno Hospital, Fukuoka, Japan
| | - Yuji Ikari
- Department of Cardiology, Tokai University School of Medicine, Isehara, Japan
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Algowhary M, Taha S, Hasan-Ali H, Matsumura A. In vivo measurement of stent length by using intravascular ultrasound. Egypt Heart J 2019; 71:32. [PMID: 31858288 PMCID: PMC6923296 DOI: 10.1186/s43044-019-0036-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 12/04/2019] [Indexed: 11/25/2022] Open
Abstract
Background What happens to stent length when deployed in a coronary artery? It is the aim of this study. Results Consecutive 95 balloon-expandable stents (BES) were studied by intravascular ultrasound (IVUS) imaging. The stent length was measured from the longitudinal view in two ways: (1) edge-to-edge length (E-E) measured between distal and proximal stent frames located at one IVUS quadrant and (2) area-to-area length (A-A) measured between distal and proximal stent frames located at two or more IVUS quadrants. IVUS measurements were compared with the manufacturer-stated length (M-L). The median E-E length was significantly longer than M-L, 18.76 mm [interquartile range (IQR) 15.65–23.60] versus 18.00 mm (IQR 15.00–23.00), respectively, p < 0.0001. Also, the median A-A length was significantly longer, 18.36 mm (IQR 15.19–23.47), p < 0.0001, than M-L. Moreover, the E-E length was significantly different from A-A length, p < 0.0001. Among the stent groups, the differences were significantly present in all drug-eluting stent and bare metal stent (BMS) comparisons, p < 0.0001, except the A-A length versus M-L in BMS only. By multivariate analysis, the predictors of difference in stent length were as follows: lesion length, p = 0.01; pre-intervention minimal diameter of the external elastic membrane (EEM), p = 0.03; lesions present in the left anterior descending branch, p = 0.03; and M-L, p = 0.04. Conclusions In the present study, the length of BES measured by IVUS was significantly different from the manufacturer-stated length. In addition to the manufacturer length, other important factors such as lesion length, pre-intervention diameter of EEM, and affected vessel determine the stent length.
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Affiliation(s)
- Magdy Algowhary
- Department of Cardiovascular Medicine, Faculty of Medicine, Assiut University, Asyut, 71516, Egypt.
| | - Salma Taha
- Department of Cardiovascular Medicine, Faculty of Medicine, Assiut University, Asyut, 71516, Egypt
| | - Hosam Hasan-Ali
- Department of Cardiovascular Medicine, Faculty of Medicine, Assiut University, Asyut, 71516, Egypt
| | - Akihiko Matsumura
- Department of Cardiology, Kameda Medical Center, Higashi-cho 929, Kamogawa, Chiba, 296-8602, Japan
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Tsuchikane E, Suzuki T, Asakura Y, Oda H, Ueda K, Tanaka T, Matsubara T, Hsu YS, Tamai H, Katoh O. Debulking of chronic coronary total occlusions with rotational or directional atherectomy before stenting: Final results of DOCTORS study. Int J Cardiol 2008; 125:397-403. [DOI: 10.1016/j.ijcard.2007.07.117] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2006] [Revised: 05/07/2007] [Accepted: 07/07/2007] [Indexed: 10/22/2022]
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Foley DP, Rensing BJ, Pieper M, Colombo A, Heyndrickx G, Macaya C, Amann FW, Suryapranata H, Mudra H, Hanet C, Meier B, W P. Clinical and quantitative angiographic outcomes following elective implantation of the self-expanding Wallstent for longer coronary artery lesions--final results of the Wellstent native study. INTERNATIONAL JOURNAL OF CARDIOVASCULAR INTERVENTIONS 2003; 2:171-179. [PMID: 12623586 DOI: 10.1080/acc.2.3.171.179] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND: Implantation of short balloon-expandable stents provides superior clinical and angiographic outcome compared with balloon angioplasty in selected patients. The purpose of the Wellstent study was to evaluate the safety and efficacy of the self-expanding Wallstent combined with aspirin and ticlopidine in patients with stable or unstable angina related to a native coronary lesion up to 45 mm in length. METHODS: 105 patients (111 lesions) with stable (57%) or unstable (43%) angina were included in this prospective multicentre evaluation. Angiography before and after Wallstent implantation and at 6-month follow-up was analysed at the core lab using the CAAS 2 system. The primary end-point was incidence of major adverse cardiac events (MACE) at 30 days. Secondary end-points were angiographic outcome at 6 months and MACE at 6 months and 1 year. RESULTS: Acute procedural success (successful stent implantation with residual stenosis <20%) was achieved in 99%. Mean reference diameter was 3.18 +/- 0.66 mm, minimal luminal diameter was 1.00 +/- 0.50 mm pre- and 2.84 +/- 0.47 mm poststent (diameter stenosis 16 +/- 6%). The mean hospital stay was 2.2 days. At 30 days, 95% of patients were free of MACE. At 6 month and 1 year clinical follow-up, 75% and 71% of patients, respectively, remained free of MACE, the majority of which (19 of 30) were re-interventions at re-angiography. In 90% of eligible patients, MLD at follow-up was 1.65 +/- 0.75 mm (late loss 1.20 +/- 0.66 mm, loss index 0.66), diameter stenosis 42 +/- 15%, with a restenosis rate of 32%. Longer stents were associated with greater luminal loss (P = 0.001) and less-favourable clinical outcome. CONCLUSIONS: Wallstent implantation, combined with aspirin and ticlopidine, achieved excellent acute and 30 day clinical results in a heterogenous high-risk patient group. Clinical outcome at 6 months and 1 year remained good, and most adverse events were re-PTCA during follow-up angiography. The loss index of 0.66 and restenosis rate of 32%, related in part to the use of longer stents, emphasizes the continuing need for effective anti-proliferative therapy.
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Affiliation(s)
- David P Foley
- Rotterdam, (7) Zwolle, Netherlands;, (2)Kreuzlingen, (6)Zurich and (10)Bern, Switzerland;, (3)Milano, Italy; (4)Aalst and (9)Brussels, Belgium;, (5)Madrid, Spain;9Munich, Germany
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Abstract
In clinical practice, the operator must decide which stent is most appropriate for the patient. This article focuses on the features of stent design that make a specific stent more or less suitable for a particular type of lesion or anatomy: the "average" coronary lesion, the lesion situated on a curve, the ostial lesion, the bifurcational lesion, the lesion located at the left main stem, the calcified lesion, the chronic total occlusion, the small vessel, the saphenous vein graft, acute or threatened vessel closure, and special situations such as coronary aneurysms and perforations.
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König A, Schiele TM, Rieber J, Theisen K, Mudra H, Klauss V. Stent design-related coronary artery remodeling and patterns of neointima formation following self-expanding and balloon-expandable stent implantation. Catheter Cardiovasc Interv 2002; 56:478-86. [PMID: 12124956 DOI: 10.1002/ccd.10249] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The self-expanding Wallstent (WS) and balloon-expandable Palmaz-Schatz stents (PS) display different mechanical and dynamical stent properties. We analyzed the impact of the respective stent design on coronary wall geometry using quantitative coronary angiography (QCA) and intracoronary ultrasound (ICUS) measurements. Serial measurements were performed within the stent and within reference segments of 50 patients (25 WS, 25 PS). Relative changes for each parameter in both stent designs were calculated (Mann-Whitney U-test; 95% CI). The luminal net gain in WS was not significantly higher in WS compared with PS (1.63 +/- 1.11 vs. 1.44 +/- 0.63 mm; P = 0.2554). The respective loss indexes were also similar (0.38 +/- 0.42 vs. 0.36 +/- 0.23; P = 0.8578). The WS segments showed significant postinterventional stent expansion with positive vessel remodeling. The neointima formation was significantly higher in WS segments (4.23 +/- 2.07 vs. 2.22 +/- 2.22 mm(2)). The coronary wall morphology and stent geometry after 6.5 +/- 1.2 months are related to the stent design. In WS segments, the neointima formation was balanced by postinterventional stent expansion, resulting in a comparable relative lumen loss in both stent types. The respective stent design had no impact on the vessel reference segments.
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Affiliation(s)
- Andreas König
- Department of Cardiology, Medizinische Klinik-Innenstadt, University Hospital, Munich, Germany.
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Piscione F, Galasso G, Maione AG, Pisani A, Golino P, Leosco D, Indolfi C, Chiariello M. Immediate and long-term outcome of recanalization of chronic total coronary occlusions. J Interv Cardiol 2002; 15:173-9. [PMID: 12141140 DOI: 10.1111/j.1540-8183.2002.tb01052.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Eighty-three consecutive patients with 85 coronary total occlusions undergoing coronary angioplasty were retrospectively studied. Patients were divided into two groups according to the occlusion age that was < 30 days (subacute total occlusion [STO]: 25 patients; range 1-30 days) or > 30 days (chronic total occlusion [CTO]: 58 patients; range 3-144 months). All procedures were carried out using a hydrophilic guidewire. Clinical success, consisting of crossing the lesion, balloon dilatation, stent deployment without complications, was 96% in STO and 81% in CTO. Multiple stepwise logistic regression analysis identified a family history of coronary artery disease (CAD), left anterior descending and right coronary artery occlusions as independent predictors of a successful procedure. No major events occurred during or immediately after the angioplasty. After a mean follow-up of 24 +/- 2 months, no difference was found in survival or freedom from myocardial infarction or target vessel revascularization among the STO and CTO patients. Successful recanalization by using a hydrophilic guidewire was achieved in a high percentage of chronic total occlusions with a low incidence of complications and a satisfactory late clinical outcome. Family history of CAD and occlusion of left anterior descending or right coronary arteries are independent predictors of procedural success.
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Affiliation(s)
- Federico Piscione
- Division of Cardiology, Federico II University, Via S. Pansini 5, 80131 Naples, Italy.
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Sanmartín M, Goicolea J, Alfonso F, Escaned J, Flores A A, Fernández-Ortiz A, Bañuelos C, Hernández-Antolín RA, Macaya C. [Implications of late expansion of self-expanding stents on neointimal response: a serial study with intravascular ultrasound]. Rev Esp Cardiol 2002; 55:16-24. [PMID: 11784519 DOI: 10.1016/s0300-8932(02)76548-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
INTRODUCTION AND OBJECTIVES A unique property of self-expanding stents is the continuous force exerted against the vessel wall, which may induce additional arterial damage with implications on restenosis. The main purpose of this study is to evaluate the consequences of late self-expansion of coronary Wallstents. METHODS Eleven patients with Wallstents implanted in native coronary arteries, in whom baseline, post-stenting, after high pressure balloon inflation and at 6-month follow-up intravascular ultrasound were performed. The stented segments were divided in 2-mm cross-sections, that were analyzed independently and carefully matched at each situation using anatomic landmarks. Multiple regression analysis was performed. RESULTS Late expansion was present in 93% of the studied sections (mean increase in stent area of 2.0 1.9 mm2) and was clearly related to stent oversizing (r = 0.45; p < 0,0001). Although late expansion was a significant positive predictor of neointimal growth (r = 0.63; p < 0.0001), it showed a negative correlation with late luminal loss (r = 0.33; p < 0.0001). No significant correlation was found between optimization of angiographic results with high pressure inflations and late luminal loss. CONCLUSIONS Late expansion is a common phenomenon after Wallstent implantation and is mainly determined by stent oversizing. Despite the fact that this phenomenon is associated with greater neointimal proliferation, it seems to have a net beneficial effect on late luminal loss.
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Affiliation(s)
- Marcelo Sanmartín
- Servicio de Cardiología Intervencionista, Instituto Cardiovascular, Hospital Clínico San Carlos, Madrid, Spain
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Antoniucci D, Valenti R, Migliorini A, Moschi G, Trapani M, Bolognese L, Santoro GM, Cerisano G. Clinical and angiographic outcomes following elective implantation of the Carbostent in patients at high risk of restenosis and target vessel failure. Catheter Cardiovasc Interv 2001; 54:420-6. [PMID: 11747173 DOI: 10.1002/ccd.2004] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The Carbostent is a new balloon-expandable, stainless steel, tubular stent with innovative multicellular design and unique turbostratic carbon coating. The aim of this study was to assess clinical and angiographic outcomes after Carbostent implantation in 112 patients poorly suitable for an effective treatment with stenting because of the high risk of thrombosis, late restenosis, and clinical target vessel failure. The inclusion criteria were age > 75 years, diabetes mellitus, a lesion length > 10 mm, a reference vessel diameter < 3.0 mm, an ostial location of the target lesion, and chronic total occlusion. Overall, a total of 175 stents ranging from 9 to 25 mm in length were placed in 147 lesions. There were no stenting attempt failures. The acute gain after stent implantation was 2.46 +/- 0.51 mm, and the residual stenosis 0 +/- 4%. No stent thrombosis occurred, nor myocardial infarction. The 6-month event-free survival rate was 74% +/- 5%. The 6-month angiographic follow-up showed a late loss of 0.81 +/- 0.88 mm and a binary (> or = 50%) restenosis rate of 25%. The results of this study suggest that the Carbostent may be highly effective in patients at high risk of restenosis and target vessel failure.
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Affiliation(s)
- D Antoniucci
- Division of Cardiology, Careggi Hospital, Florence, Italy.
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Sişman MK, Engin Ö Ö, Arikan E, Özaydin M, Eksik A, Sunay H, Dağdeviren B, Özkan G, Çağil A. The Comparison between Self-Expanding and Balloon Expandable Stent Results in Left Anterior Descending Artery. Int J Angiol 2001; 10:34-40. [PMID: 11178785 DOI: 10.1007/bf01616342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The first Wallstent results had high thrombosis and death. It was reported that the left anterior descending (LAD) artery was the vessel implicated in major complications that occurred in patients who received a Wallstent. Subsequently, Wallstent applications were refrained from with LAD lesions. However, the promising results of second-generation self-expanding Magic Wallstent implantation have been reported recently. The purpose of this study is to assess the immediate and intermediate clinical outcomes of patients undergoing self-expanding Magic Wallstent implantation at the LAD site and to compare those outcomes with those of a similar group of patients undergoing balloon expandable stenting at the same site. Between 1995 and 1999, 255 consecutive patients underwent LAD stenting at our center. The study population was divided into two groups based on the mode of delivery (self-expanding versus balloon-expandable) of stent design. Group I included 97 patients in whom self-expanding Magic Wallstents were implanted. Group II included 158 patients in whom various types of balloon-expandable stents were implanted. Procedural success was defined as successful deployment of the stent in the absence of adverse cardiac events (death, acute myocardial infarction, emergency coronary bypass surgery). Clinical success was defined as the absence of adverse cardiac events (death, acute myocardial infarction, emergency coronary bypass surgery, repeat balloon angioplasty) within the first two weeks. The mean follow-up period was 8 +/- 5.3 months for Group I and 9.8 +/- 7.5 months for Group II. There was no difference in baseline characteristics between the two groups. Fourteen patients in Group I and 22 patients in Group II had bailout procedures. The number of patients with reference vessel diameter less than 3 mm was 37 in Group I and 60 in Group II. The stent length was greater in Group I than in Group II (p = 0.0003). In Group I, stenting improved minimal lumen diameter (MLD) from 0.65 +/- 0.4 mm to 2.35 +/- 0.4 and percent diameter stenosis (PDS) from 76.24 +/- 17.3 to 22.78 +/- 13.6. In Group II, stenting improved MLD from 0.73 +/- 0.4 mm to 2.49 +/- 0.5 and PDS from 76.71 +/- 15.5 to 18.99 +/- 9.6. Final MLD and final PDS improved more in Group II than Group I. Stent could not be delivered in three patients in Group I and nine in Group II. In Group II, six stents were dislocated from its delivery system. Procedural and clinical success and subacute stent thrombosis rates were 93.8%, 85.6%, and 7.2% in Group I, and 93%, 86.7%, and 5.1% in Group II, respectively. Within the first two weeks, death occurred in one patient in each group, acute myocardial infarction in four (Group I) and two (Group II) patients; coronary bypass surgery in three (Group I) and five (Group II) patients, and balloon angioplasty in two (Group I) and four (Group II) patients, respectively. In Group I, following the first two weeks, no patients died, two patients had nonfatal myocardial infarction, and coronary bypass surgery and target vessel repeat balloon angioplasty was required in five and ten patients, respectively. In Group II, one patient died in the follow-up period, there was no nonfatal myocardial infarction, and bypass surgery and target vessel repeat balloon angioplasties were required in three and eleven patients, respectively. None of these differences in clinical events was statically significant. We found that self-expanding Magic Wallstent implantation can be performed in LAD lesions and was associated with a rate of early clinical results and intermediate term clinical results similar to that of balloon-expandable stents in LAD arteries. In conclusion, the Magic Wallstent may confidently be used for LAD lesions. </hea
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Choussat R, Black AJ, Bossi I, Joseph T, Fajadet J, Marco J. Long-term clinical outcome after endoluminal reconstruction of diffusely degenerated saphenous vein grafts with less-shortening wallstents. J Am Coll Cardiol 2000; 36:387-94. [PMID: 10933347 DOI: 10.1016/s0735-1097(00)00724-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVES This study was designed to evaluate the immediate and long-term clinical results of patients undergoing endoluminal reconstruction in diffusely degenerated saphenous vein grafts (SVGs) with elective implantation of one or more less-shortening Wallstents. BACKGROUND The optimal treatment strategy for patients with diffusely degenerated SVGs is controversial. Endoluminal reconstruction by stent implantation is one proposed strategy; however, there are few data regarding long-term clinical outcome. METHODS Between May 1995 and September 1998, 6,534 consecutive patients underwent angioplasty in our institution, including 440 who were treated for SVG lesions. Of these, 126 (115 men, 11 women, median age 69.5 years, range: 33-86 years) with old SVGs (mean age: 13+/-5 years) diffusely degenerated stenosed or occluded (mean lesion length: 27+/-12 mm) were treated electively with implantation of one or multiple (total 197) less-shortening Wallstents. RESULTS Before discharge, 13 patients (10.3%) sustained at least one major cardiovascular event, including 4 deaths (3.2%), 11 myocardial infarctions (MI) (8.7%), and 3 repeat revascularizations (target vessel = 1, nontarget vessel = 2, 2.4%). Surviving patients were followed for 22+/-11 months: 13 patients (11.1%) died, 11 (9.4%) sustained an MI, 37 underwent angioplasty (31.6%), and 4 (3.4%) underwent bypass surgery. The estimated three-year event-free survival rates (freedom from death, and freedom from death/MI/target vessel revascularization) were (mean +/- SE) 81.1+/-7.8% and 43.2+/-18.5%, respectively. CONCLUSIONS The long-term clinical outcome of patients undergoing endoluminal reconstruction in diffusely degenerated SVG is relatively poor, mainly because of a high incidence of death or MI and the frequent need for repeat angioplasty. It is unlikely that percutaneous intervention alone will provide a satisfactory or definitive solution for these patients.
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Affiliation(s)
- R Choussat
- Unité de Cardiologie Interventionelle, Clinique Pasteur, Toulouse, France
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Rabkin DJ, Lang EV, Brophy DP. Nitinol properties affecting uses in interventional radiology. J Vasc Interv Radiol 2000; 11:343-50. [PMID: 10735430 DOI: 10.1016/s1051-0443(07)61428-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Affiliation(s)
- D J Rabkin
- Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA
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Williams IL, Thomas MR, Robinson NM, Wainwright RJ, Jewitt DE. Angiographic and clinical restenosis following the use of long coronary Wallstents. Catheter Cardiovasc Interv 1999; 48:287-93; discussion 294-5. [PMID: 10525230 DOI: 10.1002/(sici)1522-726x(199911)48:3<287::aid-ccd11>3.0.co;2-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
This study assessed clinical and angiographic restenosis following the deployment of the long coronary Wallstent. Between May 1995 and June 1997, 182 Wallstents were deployed in 162 vessels in this unit. Forty-eight percent had an unstable coronary syndrome and 94% had AHA grade B or C lesions. The mean lesion length was 37 +/- 20 mm and the mean stent length was 48 +/- 20 mm. The procedural success rate was 99% and the primary success rate was 93%. Six in-patients suffered subacute stent thrombosis, the majority being in the era of anticoagulation rather than antiplatelet regimes. Seventy-three percent remained free of major adverse clinical events in the follow-up period, but 41% had angiographic restenosis. The Wallstent can be deployed in complex lesions with a high primary success rate and an acceptably low restenosis rate. The optimal management of in-stent restenosis remains to be defined.
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Affiliation(s)
- I L Williams
- Department of Cardiology, King's College Hospital, London, England.
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14
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Escaned J, Cortes J, Alcocer MA, Goicolea J, Alfonso F, Fernandez-Ortiz A, Hernandez R, Bañuelos C, Macaya C. Long-term angiographic results of stenting in chronic total occlusions: influence of stent design and vessel size. Am Heart J 1999; 138:675-88. [PMID: 10502213 DOI: 10.1016/s0002-8703(99)70182-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND Although coronary stenting has decreased the high restenosis rate associated with percutaneous transluminal coronary angioplasty of chronic total occlusions (CTOs), the results are still less satisfactory than those found in nonoccluded lesions, at least as reported with the Palmaz-Schatz stent. The present work compares the restenosis rate of other stent designs with that of the Palmaz-Schatz stent. METHODS We studied the long-term angiographic outcome of 120 CTOs successfully recanalized with balloon-expandable stents and without concomitant debulking techniques. Angiographic follow-up and full quantitative coronary angiography analysis was prospectively performed in all patients. Three different stent designs were compared: Palmaz-Schatz (n = 47), coil (n = 24), and multicellular (n = 49). Particular attention was paid to their performance in vessels of 3 mm or less and greater than 3 mm in diameter. Restenosis was defined as a 50% or greater diameter stenosis at follow-up. RESULTS Multicellular stents were implanted more frequently in the left anterior descending artery and in patients with multivessel disease. No other significant differences in clinical or angiographic baseline characteristics, including vessel size, were noted between groups. At follow-up, multicellular stents presented a lower restenosis rate (22% vs 36% and 58% in the Palmaz-Schatz and coil stent groups, respectively; P =.01 ) and larger minimal luminal diameters (1.92 +/- 0.85 mm vs 1.73 +/- 0.98 and 1.38 +/- 0.83 mm in the Palmaz-Schatz and coil stent groups, respectively; P = 0.0). The superiority of the multicellular stent design resulted from a lower restenosis rate in vessels of 3.0 mm or less in diameter (20% vs 47% and 79% in the Palmaz-Schatz and coil stent groups, respectively; P =.006). CONCLUSIONS These results suggest that the restenosis rate after stent recanalization of CTOs is influenced by both stent design and vessel size and may indicate a superiority of multicellular over Palmaz-Schatz and coil stent designs for this purpose.
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Affiliation(s)
- J Escaned
- Interventional Cardiology Unit, Hospital Clinico San Carlos, Madrid, Spain
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15
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Buller CE, Dzavik V, Carere RG, Mancini GB, Barbeau G, Lazzam C, Anderson TJ, Knudtson ML, Marquis JF, Suzuki T, Cohen EA, Fox RS, Teo KK. Primary stenting versus balloon angioplasty in occluded coronary arteries: the Total Occlusion Study of Canada (TOSCA). Circulation 1999; 100:236-42. [PMID: 10411846 DOI: 10.1161/01.cir.100.3.236] [Citation(s) in RCA: 183] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Balloon angioplasty (PTCA) of occluded coronary arteries is limited by high rates of restenosis and reocclusion. Although stenting improves results in anatomically simple occlusions, its effect on patency and clinical outcome in a broadly selected population with occluded coronary arteries is unknown. METHODS AND RESULTS Eighteen centers randomized 410 patients with nonacute native coronary occlusions to PTCA or primary stenting with the heparin-coated Palmaz-Schatz stent. The primary end point, failure of sustained patency, was determined at 6-month angiography. Repeat target-vessel revascularization, adverse cardiovascular events, and angiographic restenosis (>50% diameter stenosis) constituted secondary end points. Sixty percent of patients had occlusions of >6 weeks' duration, baseline flow was TIMI grade 0 in 64%, and median treated segment length was 30.5 mm. With 95.6% angiographic follow-up, primary stenting resulted in a 44% reduction in failed patency (10.9% versus 19.5%, P=0.024) and a 45% reduction in clinically driven target-vessel revascularization at 6 months (15.4% versus 8.4%, P=0.03). The incidence of adverse cardiovascular events was similar for both strategies (PTCA, 23.6%; stent, 23.3%; P=NS). Stenting resulted in a larger mean 6-month minimum lumen dimension (1.48 versus 1.23 mm, P<0.01) and a reduced binary restenosis rate (55% versus 70%, P<0.01). CONCLUSIONS Primary stenting of broadly selected nonacute coronary occlusions is superior to PTCA alone, improving late patency and reducing restenosis and target-vessel revascularization.
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Affiliation(s)
- C E Buller
- Vancouver General Hospital, Vancouver, BC, Canada
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16
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Werner GS, Gastmann O, Ferrari M, Scholz KH, Schünemann S, Figulla HR. Determinants of stent restenosis in chronic coronary occlusions assessed by intracoronary ultrasound. Am J Cardiol 1999; 83:1164-9. [PMID: 10215277 DOI: 10.1016/s0002-9149(99)00052-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Chronic coronary occlusions have a high recurrence rate that can be reduced by stenting, but this rate remains higher than in nonocclusive lesions. To analyze possible determinants of restenosis in these lesions, intracoronary ultrasound was performed during the recanalization procedure. A chronic coronary occlusion of > or = 1 month duration (range 1 to 33 months; median 3.3) was successfully recanalized in 41 patients. Quantitative ultrasound analysis was performed before and after stent placement, with measurement of the luminal area, the extent of the plaque burden at the site proximal and distal to the occlusion, and within the occlusion and the subsequent stent. The degree of compensatory enlargement of the coronary artery within the occlusion was determined by comparing the average of the total vessel area of the proximal and distal reference with the lesion site. Early reocclusion (subacute stent thrombosis) was observed in 1 patient (2.4%). The angiographic control after 6 months showed restenosis in 9 patients with 1 late reocclusion. The overall recurrence rate was 24%. There was no difference in clinical and procedural characteristics between lesions with restenosis and without restenosis. The latter had a larger minimum stent area (7.59 +/- 1.96 mm2 vs 5.71 +/- 0.90 mm2; p <0.01), and there was evidence for more compensatory vessel enlargement in lesions without restenosis. Thus, intracoronary ultrasound showed that a smaller minimum stent area was a major predictor of angiographic restenosis, and it occurred more often in occlusions without compensatory vessel enlargement.
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Affiliation(s)
- G S Werner
- Clinic for Internal Medicine III, Friedrich-Schiller-University Jena, Germany.
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17
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Kiesz RS, Rozek MM, Mego DM, Patel V, Ebersole DG, Chilton RJ. Acute directional coronary atherectomy prior to stenting in complex coronary lesions: ADAPTS Study. CATHETERIZATION AND CARDIOVASCULAR DIAGNOSIS 1998; 45:105-12. [PMID: 9786384 DOI: 10.1002/(sici)1097-0304(199810)45:2<105::aid-ccd1>3.0.co;2-g] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The purpose of this study was to determine the results of directional coronary atherectomy (DCA) combined with stenting in a high-risk patient population. The use of stenting or DCA alone for aorto-ostial lesions, total chronic occlusions, long lesions, and lesions containing thrombus is associated with lowered success and a relatively high restenosis rate. Between July 1993 and October 1996, we treated 89 lesions with the combined approach of DCA and stenting in 60 consecutive patients. Thirty-one (51.7%) patients were treated because of unstable angina, 11 (18.3%) for post-myocardial infarction (MI) angina, 3 (5.0%) for acute MI, and 15 (25.0%) patients for stable angina. A total of 43 (71.7%) patients had multivessel disease, 19 (31.7%) had undergone previous coronary artery bypass graft (CABG), and 17 (28.3%) patients had undergone multivessel revascularization. The procedure was successful in all patients; and no postprocedural deaths or emergent CABG occurred. Two patients (3.3%) had non-Q-wave MI after the procedure and 1 patient (1.7%) experienced Q-wave MI due to subacute stent closure 7 days after the procedure. During follow-up ranging from 6 months to 3 years, 2 (3.3%) patients died, 2 (3.3%) required CABG surgery, 1 (1.7%) patient had an MI, and 6 patients (10.0%) required target vessel revascularization. By the quantitative coronary angiography, the initial minimal luminal diameter (MLD) averaged 0.91+/-0.45 mm (74.7+/-11.8% stenosis) increasing to 3.80+/-0.44 mm (-6.7+/-12.1%) after the combined approach procedure. Thirty patients (50.0%) met criteria for late (> or =6 months) angiographic follow-up. Late MLD loss averaged 1.13+/-1.07 mm, for a mean net gain of 1.61+/-1.23 mm. Available angiographic follow-up evaluation showed a restenosis rate of 13.3%. A combined approach, defined as the use of both DCA and stenting, is safe and yields a low restenosis rate in high-risk patients who have lesions known to respond less favorably to stenting or DCA alone.
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Affiliation(s)
- R S Kiesz
- Department of Medicine, University of Texas Health Science Center, South Texas Veteran Health System, Audie Murphy Division, San Antonio 78284-7872, USA.
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Elezi S, Kastrati A, Wehinger A, Walter H, Schühlen H, Hadamitzky M, Dirschinger J, Neumann FJ, Schömig A. Clinical and angiographic outcome after stent placement for chronic coronary occlusion. Am J Cardiol 1998; 82:803-6, A9. [PMID: 9761095 DOI: 10.1016/s0002-9149(98)00440-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A consecutive series of 132 patients with total chronic coronary occlusions were compared with 1,966 patients with stenotic lesions in terms of angiographic and clinical outcome. We concluded that patients with chronically occluded coronary lesions present a higher rate of target lesion revascularizations and angiographic restenosis than patients with stenotic lesions.
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Affiliation(s)
- S Elezi
- Medizinische Klinik rechts der Isar and Deutsches Herzzentrum, Technische Universität München, Munich, Germany
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Anzuini A, Rosanio S, Legrand V, Tocchi M, Coppi R, Bonnier H, Sheiban I, Kulbertus HE, Chierchia SL. Wiktor stent for treatment of chronic total coronary artery occlusions: short- and long-term clinical and angiographic results from a large multicenter experience. J Am Coll Cardiol 1998; 31:281-8. [PMID: 9462568 DOI: 10.1016/s0735-1097(97)00490-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVES This study reports the first multicenter experience with the Wiktor coil stent for treatment of chronic total coronary artery occlusions (CTOs). BACKGROUND Percutaneous transluminal coronary angioplasty (PTCA) of CTO is associated with very high restenosis and reocclusion rates. Coronary stenting has been proposed as a means of improving outcome. However, the Wiktor device for CTOs has never been tested in a large patient sample. METHODS From January 1993 to December 1996, 89 patients with 91 CTOs underwent Wiktor stent implantation after successful PTCA. The post-stenting regimen consisted of warfarin (Coumadin) plus aspirin in the initial 49 patients (55%) and aspirin plus ticlopidine in 40 patients (45%). RESULTS Stenting was successful in 87 patients (98%). At 1 month, 6% of patients had subacute stent thrombosis, 3% had a major bleeding event, and 1% had access-site complications. Subacute stent thrombosis showed univariate association with warfarin therapy (p = 0.009). Angiographic follow-up was obtained in 76 (93%) of 82 eligible patients. The restenosis rate was 32%, including 4% reocclusions. By multiple logistic regression analysis, restenosis was independently associated with multiple stents (adjusted odds ratio [OR] 27.67, 95% confidence interval [CI] 4.25 to 79.95, p = 0.0008) and increasing values of occlusion length (adjusted OR 1.23, 95% CI 1.09 to 1.39, p = 0.001). Freedom from death, myocardial infarction or stented vessel revascularization was 87% and 72% at 1 and 3 years, respectively. CONCLUSIONS Short- and long-term clinical and angiographic outcomes are favorable in patients undergoing Wiktor stent implantation in CTO. Further technical improvement is needed to reduce the restenosis rate in patients with long lesions and multiple stents.
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Affiliation(s)
- A Anzuini
- Department of Cardiology, San Raffaele Hospital, Milan, Italy
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Violaris AG, Ozaki Y, Serruys PW. Endovascular stents: a 'break through technology', future challenges. INTERNATIONAL JOURNAL OF CARDIAC IMAGING 1997; 13:3-13. [PMID: 9080234 DOI: 10.1023/a:1005703106724] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Coronary stents were developed to overcome the two main limitations of balloon angioplasty, acute occlusion and long term restenosis. Coronary stents can tack back intimal flaps and seal the dissected vessel wall and thereby treat acute or threatened vessel closure after unsuccessful balloon angioplasty. Following successful balloon angioplasty stents can prevent late vessel remodeling (chronic vessel recoil) by mechanically enforcing the vessel wall and resetting the vessel size resulting in a low incidence of restenosis. All currently available stents are composed of metal and the long-term effects of their implantation in the coronary arteries are still not clear. Because of the metallic surface they are also thrombogenic, therefore rigorous antiplatelet or anticoagulant therapy is theoretically required. Furthermore, they have an imperfect compromise between scaffolding properties and flexibility, resulting in an unfavourable interaction between stents and unstable or thrombus laded plaque. Finally, they still induce substantial intimal hyperplasia which may result in restenosis. Future stent can be made less thrombogenic by modifying the metallic surface, or coating it with an antithrombotic agent or a membrane eluting an antithrombotic drug. The unfavourable interaction with the unstable plaque and the thrombus burden can be overcome by covering the stent with a biological conduit such as a vein, or a biodegradable material which can be endogenous such as fibrin or exogenous such as a polymer. Finally the problem of persisting induction of intimal hyperplasia may be overcome with the use of either a radioactive stent or a stent eluting an antiproliferative drug.
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Affiliation(s)
- A G Violaris
- Catheterization Laboratory, Erasmus University, Rotterdam, The Netherlands
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Abstract
Coronary stents were developed to overcome the two main limitations of balloon angioplasty, acute occlusion and long-term restenosis. Coronary stents can tack back intimal flaps and seal the dissected vessel wall, thereby treating acute or threatened vessel closure after unsuccessful balloon angioplasty. After successful balloon angioplasty, stents can prevent late vessel remodeling (chronic vessel recoil) by mechanically enforcing the vessel wall and resetting the vessel size, resulting in a low incidence of restenosis. All currently available stents are composed of metal, and the long-term effects of their implantation in the coronary arteries are still not clear. Because of the metallic surface, they are also thrombogenic; therefore, rigorous antiplatelet or anticoagulant therapy is theoretically required. Furthermore, they have an imperfect compromise between scaffolding properties and flexibility, resulting in an unfavorable interaction between stents and unstable or thrombus-laden plaque. Finally, they still induce substantial intimal hyperplasia that may result in restenosis. Future stents can be made less thrombogenic by modifying the metallic surface or coating it with an antithrombotic agent or a membrane eluting an antithrombotic drug. The unfavorable interaction with the unstable plaque and the thrombus burden can be overcome by covering the stent with a biological conduit, such as a vein, or a biodegradable material that can be endogenous, such as fibrin, or exogenous, such as a polymer. Finally, the problem of persisting induction of intimal hyperplasia may be overcome with the use of either a radioactive stent or a stent eluting an antiproliferative drug.
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Affiliation(s)
- Y Ozaki
- Catheterization Laboratory, Thoraxcenter, Erasmus University, Rotterdam, The Netherlands
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