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Onalan A, Gurkas E, Kursad Akpinar C, Aykac O, Uysal Kocabas Z, Dogan H, Temel M, Ozcan Ozdemir A. Safety and effectiveness of anticoagulation in the management of acute stroke and transient ischemic attack due to intracranial and extracranial non-occlusive thrombus. J Clin Neurosci 2024; 124:47-53. [PMID: 38643651 DOI: 10.1016/j.jocn.2024.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 04/04/2024] [Accepted: 04/10/2024] [Indexed: 04/23/2024]
Abstract
INTRODUCTION The awareness of nonocclusive thrombus has increased with the increasing frequency of imaging methods used for acute ischemic stroke; however, the best treatment for nonocclusive thrombi is still unknown. In this study, we examined how anticoagulants affect supra-aortic artery nonocclusive thrombus and clinical outcomes. MATERIALS AND METHODS This study included 52 patients with transient ischemic attack or stroke who were diagnosed with nonocclusive thrombi on computed tomography angiography at admission. Patients were treated with anticoagulant treatment and grouped according to treatment modality (either unfractionated heparin or low molecular weight heparin) and treatment duration. Primary safety outcome was major bleeding defined as immediate and clnically significant hemorrhage. Anticoagulant treatment was continued until the thrombus was resolved as determined by consecutive weekly computed tomography angiography controls. After thrombus resolution, treatment was directed according to the underlying etiology. Antiaggregation treatment was the preferred treatment after thrombus resolution for patients with no observed etiology. RESULTS The affected internal carotid arteries were most frequently located in the cervical segment (48 %). Complete resolution was achieved within 2 weeks in 50 patients (96 %). The involved vasculature included the following: the extracranial carotid artery segments (n = 26, 50 %), intracranial ICA segments (n = 10, 19 %), basilar artery segments (n = 8, 15 %) and MCA segments (n = 7, 13 %). The most common underlying pathologies were atherosclerosis (n = 17), atrial fibrillation (n = 17), undetermined embolic stroke (n = 8), dissection (n = 7), and malignancy (n = 2). No symptomatic intra- or extracranial bleeding complications due to anticoagulant use were observed in any patient during the study period. A good functional outcome (modified Rankin scale score 0-2) was achieved in 49 patients (94 %) at 3 months. There was no significant difference between treatment type and duration in terms of reinfarction (p = 0.97 and p = 0.78, respectively). CONCLUSION Anticoagulant treatment is safe and effective in symptomatic patients with intracranial or extracranial artery nonocclusive thrombus, regardless of the anticoagulant type, thrombus location and size.
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Affiliation(s)
- Aysenur Onalan
- University of Health Sciences, Kartal Dr. Lutfi Kirdar City Hospital, Istanbul, Turkey Department of Neurology, Stroke Center, Turkey.
| | - Erdem Gurkas
- University of Health Sciences, Kartal Dr. Lutfi Kirdar City Hospital, Istanbul, Turkey Department of Neurology, Stroke Center, Turkey
| | | | - Ozlem Aykac
- Eskisehir Osmangazi University, Department of Neurology, Stroke Center, Eskisehir, Turkey
| | - Zehra Uysal Kocabas
- Eskisehir Osmangazi University, Department of Neurology, Stroke Center, Eskisehir, Turkey
| | - Hasan Dogan
- Samsun University, Department of Neurology, Stroke Center, Samsun, Turkey
| | - Musa Temel
- Sanliurfa Mehmet Akif Inan Research Hospital, Department of Neurology, Sanliurfa, Turkey
| | - Atilla Ozcan Ozdemir
- Eskisehir Osmangazi University, Department of Neurology, Stroke Center, Eskisehir, Turkey
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Kremer C, Lorenzano S, Bejot Y, Lal A, Epple C, Gdovinova Z, Mono ML, Karapanayiotides T, Jovanovic D, Dawson J, Caso V. Sex differences in outcome after carotid revascularization in symptomatic and asymptomatic carotid artery stenosis. J Vasc Surg 2023; 78:817-827.e10. [PMID: 37055001 DOI: 10.1016/j.jvs.2023.03.502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 03/11/2023] [Accepted: 03/19/2023] [Indexed: 04/15/2023]
Abstract
OBJECTIVE Sex differences regarding the safety and efficacy of carotid revascularization in carotid artery stenosis have been addressed in several studies with conflicting results. Moreover, women are underrepresented in clinical trials, leading to limited conclusions regarding the safety and efficacy of acute stroke treatments. METHODS A systematic review and meta-analysis was performed by literature search including four databases from January 1985 to December 2021. Sex differences in the efficacy and safety of revascularization procedures, including carotid endarterectomy (CEA) and carotid artery stenting (CAS), for symptomatic and asymptomatic carotid artery stenoses were analyzed. RESULTS Regarding CEA in symptomatic carotid artery stenosis, the stroke risk in men (3.6%) and women (3.9%) based on 99,495 patients (30 studies) did not differ (P = .16). There was also no difference in the stroke risk by different time frames up to 10 years. Compared with men, women treated with CEA had a significantly higher stroke or death rate at 4 months (2 studies, 2565 patients; 7.2% vs 5.0%; odds ratio [OR], 1.49; 95% confidence interval [CI], 1.04-2.12; I2 = 0%; P = .03), and a significantly higher rate of restenosis (1 study, 615; 17.2% vs 6.7%; OR, 2.81; 95% CI, 1.66-4.75; P = .0001). For CAS in symptomatic artery stenosis, data showed a non-significant tendency toward higher peri-procedural stroke in women, whereas for asymptomatic carotid artery stenosis, data based on 332,344 patients showed that women (compared with men) after CEA had similar rates of stroke, stroke or death, and the composite outcome stroke/death/myocardial infarction. The rate of restenosis at 1 year was significantly higher in women compared with men (1 study, 372 patients; 10.8% vs 3.2%; OR, 3.71; 95% CI, 1.49-9.2; P = .005). Furthermore, CAS in asymptomatic patients was associated with low risk of a postprocedural stroke in both sexes, but a significantly higher risk of in-hospital myocardial infarction in women than men (8445 patients, 1.2% vs 0.6%; OR, 2.01; 95% CI, 1.23-3.28; I2 = 0%; P = .005). CONCLUSIONS A few sex-differences in short-term outcomes after carotid revascularization for symptomatic and asymptomatic carotid artery stenosis were found, although there were no significant differences in the overall stroke. This indicates a need for larger multicenter prospective studies to evaluate these sex-specific differences. More women, including those aged over 80 years, need to be enrolled in randomized controlled trials, to better understand if sex differences exist and to tailor carotid revascularization accordingly.
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Affiliation(s)
- Christine Kremer
- Neurology Department, Skåne University Hospital, Department Clinical Sciences Lund University, Malmö, Sweden.
| | - Svetlana Lorenzano
- Department of Human Neurosciences, Sapienza University of Rome, Rome, Italy
| | - Yannick Bejot
- Dijon Stroke Registry, EA7460, Pathophysiology and Epidemiology of Cerebro-Cardiovascular diseases (PEC2), University Hospital of Dijon, University of Burgundy, UBFC, Dijon, France
| | - Avtar Lal
- European Stroke Organisation (ESO), Basel, Switzerland
| | - Corina Epple
- Neurology Department, Klinikum Hanau, Hanau, Germany
| | - Zuzana Gdovinova
- Neurology Department, Faculty of Medicine P.J. Safarik University Košice, Košice, Slovakia
| | - Marie-Luise Mono
- Department of Neurology, Municipal Hospital Waid und Triemli, Zürich, Switzerland; University Hospital and University of Bern, Bern, Switzerland
| | - Theodore Karapanayiotides
- Second Department of Neurology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Dejana Jovanovic
- Department of Emergency Neurology, Neurology Clinic, Clinical Center of Serbia, Medical Faculty, University of Belgrade, Belgrade, Serbia
| | - Jesse Dawson
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow, Scotland
| | - Valeria Caso
- Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia, Italy
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Leung YYR, Bera K, Urriza Rodriguez D, Dardik A, Mas JL, Simonte G, Rerkasem K, Howard DP. Safety of Carotid Endarterectomy for Symptomatic Stenosis by Age: Meta-Analysis With Individual Patient Data. Stroke 2023; 54:457-467. [PMID: 36647921 PMCID: PMC9855737 DOI: 10.1161/strokeaha.122.040819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 12/06/2022] [Indexed: 01/18/2023]
Abstract
BACKGROUND There is uncertainty whether elderly patients with symptomatic carotid stenosis have higher rates of adverse events following carotid endarterectomy. In trials, recurrent stroke risk on medical therapy alone increased with age, whereas operative stroke risk was not related. Few octogenarians were included in trials and there has been no systematic analysis of all study types. We aimed to evaluate the safety of carotid endarterectomy in symptomatic elderly patients, particularly in octogenarians. METHODS We did a systematic review and meta-analysis of studies (from January 1, 1980 through March 1, 2022) reporting post carotid endarterectomy risk of stroke, myocardial infarction, and death in patients with symptomatic carotid stenosis. We included observational studies and interventional arms of randomized trials if the outcome rates (or the raw data to calculate these) were provided. Individual patient data from 4 prospective cohorts enabled multivariate analysis. RESULTS Of 47 studies (107 587 patients), risk of perioperative stroke was 2.04% (1.94-2.14) in octogenarians (390 strokes/19 101 patients) and 1.85% (1.75-1.95) in nonoctogenarians (1395/75 537); P=0.046. Perioperative death was 1.09% (0.94-1.25) in octogenarians (203/18 702) and 0.53% (0.48-0.59) in nonoctogenarians (392/73 327); P<0.001. Per 5-year age increment, a linear increase in perioperative stroke, myocardial infarction, and death were observed; P=0.04 to 0.002. However, during the last 3 decades, perioperative stroke±death has declined significantly in octogenarians (7.78% [5.58-10.55] before year 2000 to 2.80% [2.56-3.04] after 2010); P<0.001. In Individual patient data multivariate-analysis (5111 patients), age ≥85 years was independently associated with perioperative stroke (P<0.001) and death (P=0.005). Yet, survival was similar for octogenarians versus nonoctogenarians at 1-year (95.0% [93.2-96.5] versus 97.5% [96.4-98.6]; P=0.08), as was 5-year stroke risk (11.93% [9.98-14.16]) versus 12.78% [11.65-13.61]; P=0.24). CONCLUSIONS We found a modest increase in perioperative risk with age in symptomatic patients undergoing carotid endarterectomy. As stroke risk increases with age when on medical therapy alone, our findings support selective urgent intervention in symptomatic elderly patients.
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Affiliation(s)
- Ya Yuan Rachel Leung
- Wolfson Centre for Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, University of Oxford, UK (Y.Y.R.L., D.P.J.H.)
| | - Kasia Bera
- Department of Vascular Surgery, Oxford University Hospitals NHS Trust, UK (K.B., D.U.R., D.P.J.H.)
| | - Daniel Urriza Rodriguez
- Department of Vascular Surgery, Oxford University Hospitals NHS Trust, UK (K.B., D.U.R., D.P.J.H.)
| | - Alan Dardik
- Yale Department of Surgery, Departments of Surgery and Cellular and Molecular Physiology, Yale School of Medicine, New Haven, CT (A.D.)
- Department of Surgery, VA Connecticut Healthcare System, West Haven (A.D.)
| | - Jean-Louis Mas
- Department of Neurology, GHU Paris, Hôpital Sainte-Anne, Université Paris-Cité, Inserm, France (J.-L.M.)
| | - Gioele Simonte
- Vascular and Endovascular Surgery Unit, Santa Maria della Misericordia, University of Perugia, Italy (G.S.)
| | - Kittipan Rerkasem
- Environmental - Occupational Health Sciences and Non-Communicable Diseases Research Group, Research Institute for Health Sciences, Chiang Mai University, Thailand (K.R.)
- Clinical Surgical Research Center, Department of Surgery, Faculty of Medicine, Chiang Mai University, Thailand (K.R.)
| | - Dominic P.J. Howard
- Wolfson Centre for Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, University of Oxford, UK (Y.Y.R.L., D.P.J.H.)
- Department of Vascular Surgery, Oxford University Hospitals NHS Trust, UK (K.B., D.U.R., D.P.J.H.)
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Editor's Choice – Prognostic Role of Pre-Operative Symptom Status in Carotid Endarterectomy: A Systematic Review and Meta-Analysis. Eur J Vasc Endovasc Surg 2020; 59:516-524. [DOI: 10.1016/j.ejvs.2020.01.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 12/16/2019] [Accepted: 01/16/2020] [Indexed: 01/10/2023]
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Schneider JR, Wilkinson JB, Rogers TJ, Verta MJ, Jackson CR, Hoel AW. Results of carotid endarterectomy in patients with contralateral internal carotid artery occlusion from the Mid-America Vascular Study Group and the Society for Vascular Surgery Vascular Quality Initiative. J Vasc Surg 2020; 71:832-841. [DOI: 10.1016/j.jvs.2019.05.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Accepted: 05/04/2019] [Indexed: 11/17/2022]
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Macharzina RR, Müller C, Vogt M, Messé SR, Vach W, Winker T, Weinbeck M, Siepe M, Czerny M, Neumann FJ, Zeller T. The SAPPHIRE criteria, history of myocardial infarction and diabetes predict adverse outcomes following carotid endarterectomy similar to stenting. Clin Res Cardiol 2019; 109:589-598. [PMID: 31555985 PMCID: PMC7182626 DOI: 10.1007/s00392-019-01546-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 09/09/2019] [Indexed: 01/22/2023]
Abstract
Aims Identifying factors associated with worse outcome following carotid endarterectomy (CEA) is important to improve prevention of major adverse cardiovascular and cerebrovascular events (MACCE), yet rarely used for registries. We intended to identify predictors of MACCE following CEA as recently analysed for stenting. Methods and results Patients undergoing CEA at 2 centers over 13 years were entered into a database. Baseline clinical characteristics, procedural factors and a panel of clinical and lesion-related high-risk features (SHR) and exclusion criteria (SE), empirically compiled for stratification in the SAPPHIRE trial, were differentially analysed using Cox regressions. The analysis included 748 operations; 262 (35%) asymptomatic, 208 (28%) with previous strokes, and 278 (37%) with transient ischemic attacks (TIA). The overall 30-day MACCE rate was 6.7%, 5.0% in asymptomatic and 7.6% in symptomatic patients. Previous MI (HR 2.045, p = 0.022), diabetes (HR 2.111, p = 0.011) and symptomatic patients (HR 2.045, p = 0.044) were independently associated with MACCE. SE patients (n = 81) had a MACCE rate of 13.6%; the MACCE rate of the remainder dropped to 5.8% (4.7% in asymptomatic and 6.5% in symptomatic patients). Hazard ratio for SHR patients was 2.069 (CI 1.087–3.941) and 2.389 for SE (CI 1.223–4.666), each compared to all patients with lower risk and adjusted for symptomatic status. Among SHR and SE criteria NYHA 3–4, contralateral occlusions and intraluminal thrombus were significant determinants and MI < 4 weeks before CEA showed a strong trend (p = 0.05). Conclusion Patients identified by SHR and SE criteria, prior MI and diabetes warrant increased attention to prevent MACCE following CEA. Graphic abstract ![]()
Electronic supplementary material The online version of this article (10.1007/s00392-019-01546-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Roland Richard Macharzina
- Department of Cardiology and Angiology II, University Heart Center Freiburg-Bad Krozingen, Suedring 15, 79189, Bad Krozingen, Germany.
| | - Carolin Müller
- Department of Surgery, Ortenau Klinikum Lahr, Lahr, Germany
| | - Matthias Vogt
- Department of Cardiovascular Surgery, University Heart Center Freiburg-Bad Krozingen, Bad Krozingen, Germany
| | - Steven R Messé
- Department of Neurology, University of Pennsylvania, Philadelphia, USA
| | - Werner Vach
- Functional Biomechanics Laboratory, University Hospital Basel, Spitalstrasse 21, 4031, Basel, Switzerland
| | - Thomas Winker
- Institute of Neurology, University Heart Center Freiburg-Bad Krozingen, Bad Krozingen, Germany
| | - Michael Weinbeck
- Department of Cardiovascular Surgery, University Heart Center Freiburg-Bad Krozingen, Bad Krozingen, Germany
| | - Matthias Siepe
- Department of Cardiovascular Surgery, University Heart Center Freiburg-Bad Krozingen, Bad Krozingen, Germany
| | - Martin Czerny
- Department of Cardiovascular Surgery, University Heart Center Freiburg-Bad Krozingen, Bad Krozingen, Germany
| | - Franz-Josef Neumann
- Department of Cardiology and Angiology II, University Heart Center Freiburg-Bad Krozingen, Suedring 15, 79189, Bad Krozingen, Germany
| | - Thomas Zeller
- Department of Cardiology and Angiology II, University Heart Center Freiburg-Bad Krozingen, Suedring 15, 79189, Bad Krozingen, Germany
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Knappich C, Kuehnl A, Tsantilas P, Schmid S, Breitkreuz T, Kallmayer M, Zimmermann A, Eckstein HH. Patient characteristics and in-hospital outcomes of emergency carotid endarterectomy and carotid stenting after stroke in evolution. J Vasc Surg 2018; 68:436-444.e6. [DOI: 10.1016/j.jvs.2017.10.085] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Accepted: 10/26/2017] [Indexed: 11/30/2022]
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Vinogradov RA, Pykhteev VS, Martirosova KI, Lashevich KA. [Perioperative complications prognosis in carotid endarterectomy]. Khirurgiia (Mosk) 2018:82-85. [PMID: 29376964 DOI: 10.17116/hirurgia2018182-85] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Affiliation(s)
- R A Vinogradov
- Research Institute - Ochapovsky Regional Clinical Hospital # 1, Krasnodar, Russia; Kuban State Medical University of Healthcare Ministry of the Russian Federation, Krasnodar, Russia
| | - V S Pykhteev
- Kuban State Medical University of Healthcare Ministry of the Russian Federation, Krasnodar, Russia
| | - K I Martirosova
- Pirogov Russian National Research Medical University of Healthcare Ministry of the Russian Federation, Moscow, Russia
| | - K A Lashevich
- Kuban State Medical University of Healthcare Ministry of the Russian Federation, Krasnodar, Russia
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Lee EJ, Cho YP, Lee SH, Lee JS, Nam HJ, Kim BJ, Kwon TW, Kang DW, Kim JS, Kwon SU. Hemodynamic Tandem Intracranial Lesions on Magnetic Resonance Angiography in Patients Undergoing Carotid Endarterectomy. J Am Heart Assoc 2016; 5:JAHA.116.004153. [PMID: 27702804 PMCID: PMC5121513 DOI: 10.1161/jaha.116.004153] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Background Hemodynamic tandem intracranial lesions (TILs) on intracranial magnetic resonance angiography, which develop flow dependently, have been overlooked clinically in patients undergoing carotid endarterectomy. As they represent severe baseline hemodynamic compromise at the segment, they may be associated with distinctive clinical outcomes. Methods and Results We assessed 304 consecutive carotid endarterectomy cases treated over 3 years. Included cases had both preoperative and postoperative intracranial 3‐dimensional time‐of‐flight magnetic resonance angiography, of which signal intensities are flow dependent, and postoperative diffusion‐weighted imaging (≤3 days following carotid endarterectomy). Preoperative TILs in the ipsilateral intracranial arteries were evaluated by the presence of nonexclusive components: focal stenosis (>50%), diffuse stenosis (>50%), and decreased signal intensities (>50%). The components showing postoperative normalization were considered hemodynamic. TILs with hemodynamic components were defined as hemodynamic TILs, while others as consistent TILs. Baseline characteristics and postoperative outcomes were analyzed among 3 groups: no TILs, consistent TILs, and hemodynamic TILs. Preoperative TILs were identified in 104 (34.2%) cases; 54 (17.8%) had hemodynamic components. Diffuse stenosis and decreased signal intensities were usually reversed postoperatively. Patients with hemodynamic TILs tended to have severe proximal carotid stenosis and recent strokes (≤14 days). For the outcome, hemodynamic TILs were independently associated with the advent of postoperative ischemic lesions on diffusion‐weighted imaging (odds ratio: 2.50; 95% CI, 1.20–5.20). Conclusions In patients undergoing carotid endarterectomy, a significant number of preoperative TILs demonstrated hemodynamic components, which were reversed postoperatively. The presence of such components was distinctively associated with the postoperative incidence of new ischemic lesions.
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Affiliation(s)
- Eun-Jae Lee
- Department of Neurology, Asan Medical Center, University of Ulsan, Seoul, Korea
| | - Yong-Pil Cho
- Department of Surgery, Asan Medical Center, University of Ulsan, Seoul, Korea
| | - Sang-Hun Lee
- Department of Neurology, Asan Medical Center, University of Ulsan, Seoul, Korea
| | - Ji Sung Lee
- Clinical Research Center, Asan Medical Center, University of Ulsan, Seoul, Korea
| | - Hyo Jung Nam
- Department of Neurology, Asan Medical Center, University of Ulsan, Seoul, Korea
| | - Bum Joon Kim
- Department of Neurology, KyungHee University, Seoul, Korea
| | - Tae-Won Kwon
- Department of Surgery, Asan Medical Center, University of Ulsan, Seoul, Korea
| | - Dong-Wha Kang
- Department of Neurology, Asan Medical Center, University of Ulsan, Seoul, Korea
| | - Jong S Kim
- Department of Neurology, Asan Medical Center, University of Ulsan, Seoul, Korea
| | - Sun U Kwon
- Department of Neurology, Asan Medical Center, University of Ulsan, Seoul, Korea
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Chastain HD, Gomez CR, Iyer S, Roubin GS, Vitek JJ, Terry JB, Levine RL. Influence of Age upon Complications of Carotid Artery Stenting. J Endovasc Ther 2016. [DOI: 10.1177/152660289900600301] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Purpose: To examine the impact of age upon the development of neurological and major systemic complications during or after carotid artery stenting. Methods: We reviewed the complications that occurred in patients undergoing elective carotid stent implantation between September 1994 and August 1996. The study population was then divided into 3 groups according to age: ≥ 80 (group A), 75 to 79 (group B), and ≤ 74 (group C) years. The rates of death, major and minor stroke, and myocardial infarction were compared among the groups, as well as with the rates reported by the major carotid endarterectomy (CEA) trials. Results: During the study period, 182 patients (216 vessels) were treated with carotid stenting. There were 19 (10.4%) complications: 1 (0.5%) death, 2 (1.1%) major strokes, 15 (8.2%) minor strokes, and 1 (0.5%) myocardial infarction. Neurological complications were clearly related to increased age with rates of 25.0% in group A versus 8.6% in group C (p = 0.042). The overall per patient rate of death or major stroke was 1.6% (1.4% per vessel). Conclusions: Increasing age has a negative impact on the rate of complications in carotid stent patients. However, the majority of those complications are minor. The relative roles of medical therapy, stenting, and CEA in patients > 80 years of age must await the results of randomized trials.
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Affiliation(s)
| | - Camilo R. Gomez
- University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Sriram Iyer
- University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Gary S. Roubin
- University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Jiri J. Vitek
- University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - John B. Terry
- University of Alabama at Birmingham, Birmingham, Alabama, USA
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Pluháčková H, Staffa R, Novotný T, Kříž Z, Buček J. Undiagnosed tandem stenosis of the internal carotid artery - A case report. COR ET VASA 2016. [DOI: 10.1016/j.crvasa.2015.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Efficacy and safety of carotid artery stenting for stroke prevention. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2016. [DOI: 10.1016/j.ejrnm.2015.11.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Luebke T, Brunkwall J. Impact of Real-World Adherence with Best Medical Treatment on Cost-Effectiveness of Carotid Endarterectomy for Asymptomatic Carotid Artery Stenosis. Ann Vasc Surg 2015; 30:236-47. [PMID: 26407926 DOI: 10.1016/j.avsg.2015.06.098] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 06/19/2015] [Accepted: 06/21/2015] [Indexed: 10/23/2022]
Abstract
BACKGROUND To present a model of decision and cost-effectiveness analysis that allows assessing the trade-off between the short-term risks of performing a carotid endarterectomy (CEA) and the rate of preventable future events and the impact of real-world adherence of best medical treatment (BMT) on cost-effectiveness of both therapeutic options. METHODS We used data from the current literature to define values for a base case and perform a sensitivity analysis. The primary end point was a comparison of the fatal and disabling stroke-free survival during a 5-year period in a cohort of hypothetical patients who presented asymptomatic severe carotid stenosis and were treated with either prophylactic CEA or adherent and nonadherent best medical treatment, respectively. RESULTS The difference in estimated fatal and disabling stroke-free survival favoring endarterectomy in patients with asymptomatic severe carotid stenosis is 44 days over the course of 5 years in case of nonadherent best medical treatment. Over a 5-year time horizon, prophylactic CEA would be cost-effective in 50.8% of bootstrap replicates and nonpersistent BMT might be economically dominant in 11.1%. The probability that CEA would be cost-effective at a willingness-to-pay (WTP) threshold of Euro 50,000/quality-adjusted life year gained was 71.8%. In 17.9% prophylactic CEA would be more costly and effective than persistent BMT, but its incremental cost-effectiveness ratio was greater than the WTP, so persistent BMT would be optimal. CONCLUSIONS In this model, in case of real-world drug adherence, it was likely that a strategy of early endarterectomy might be a cost-effective or even the dominant therapeutic option in comparison with a strategy of medical therapy alone (deferred surgery). If background any-territory stroke rates on contemporary medical therapy would fall substantially below 0.7%, surgery would cease to be cost-effective.
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Affiliation(s)
- Thomas Luebke
- Department of Vascular and Endovascular Surgery, University Hospital of Cologne, Cologne, Germany.
| | - Jan Brunkwall
- Department of Vascular and Endovascular Surgery, University Hospital of Cologne, Cologne, Germany
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Clinical Outcomes of Carotid Endarterectomy in Symptomatic and Asymptomatic Patients with Ipsilateral Intracranial Stenosis. World J Surg 2015; 39:2823-30. [DOI: 10.1007/s00268-015-3165-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Jang EW, Chung J, Seo KD, Suh SH, Kim YB, Lee KY. A Protocol-Based Decision for Choosing a Proper Surgical Treatment Option for Carotid Artery Stenosis. J Cerebrovasc Endovasc Neurosurg 2015; 17:101-7. [PMID: 26157689 PMCID: PMC4495083 DOI: 10.7461/jcen.2015.17.2.101] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 10/27/2014] [Accepted: 04/29/2015] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE There are two established surgical treatment options for carotid artery stenosis. Carotid endarterectomy (CEA) has been accepted as a gold standard for surgical treatment while carotid artery stenting (CAS) has recently become an alternative option. Each treatment option has advantages and disadvantages for the treatment outcomes. We propose a protocol for selection of a proper surgical treatment option for carotid artery stenosis. MATERIALS AND METHODS A total of 192 published articles on management of carotid artery stenosis were reviewed. Preoperatively considerable factors which had been repeatedly noted in those articles for the risk/benefits of CEA or CAS were selected. According to those factors, a protocol with four categories was established. RESULTS CEA or CAS is indicated when the patient has a symptomatic stenosis ≥ 50%, or when the patient has an asymptomatic stenosis ≥ 80%. Each treatment option has absolute indications and favorable indications. Each absolute indication is scored with three points, and each favorable indication, one point. Based on the highest scores, a proper treatment option (CEA or CAS) is selected. CONCLUSION We have been treating patients according to this protocol and evaluating the outcomes of our protocol-based decision because this protocol might be helpful in assessment of risk/benefit for selection of a proper surgical treatment option in patients with carotid artery stenosis.
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Affiliation(s)
- E-Wook Jang
- Department of Neurosurgery, Cerebrovascular Center, Gangnam Severance Hospital, Seoul, Korea
| | - Joonho Chung
- Department of Neurosurgery, Cerebrovascular Center, Gangnam Severance Hospital, Seoul, Korea
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Korea
| | - Kwon-Duk Seo
- Department of Neurology, Cerebrovascular Center, Gangnam Severance Hospital, Seoul, Korea
| | - Sang Hyun Suh
- Department of Radiology, Cerebrovascular Center, Gangnam Severance Hospital, Seoul, Korea
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Korea
| | - Yong Bae Kim
- Department of Neurosurgery, Cerebrovascular Center, Gangnam Severance Hospital, Seoul, Korea
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Korea
| | - Kyung-Yul Lee
- Department of Neurology, Cerebrovascular Center, Gangnam Severance Hospital, Seoul, Korea
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Korea
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Luebke T, Brunkwall J. Meta- analysis and meta-regression analysis of the associations between sex and the operative outcomes of carotid endarterectomy. BMC Cardiovasc Disord 2015; 15:32. [PMID: 25956903 PMCID: PMC4432947 DOI: 10.1186/s12872-015-0029-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 04/21/2015] [Indexed: 12/26/2022] Open
Abstract
Background Subgroup analyses from randomized controlled trials (RCT) of carotid endarterectomy (CEA) for both symptomatic and asymptomatic carotid stenosis suggest less benefit in women compared to men, due partly to higher age-independent peri-operative risk. However, a meta-analysis of case series and databases focussing on CEA-related gender differences has never been investigated. Methods A systematic review of all available publications (including case series, databases and RCTs) reporting data on the association between sex and procedural risk of stroke and/or death following CEA from 1980 to 2015 was investigated. Pooled Peto odds ratios of the procedural risk of stroke and/or death were obtained by Mantel-Haenszel random-effects meta-analysis. The I2 statistic was used as a measure of heterogeneity. Potential publication bias was assessed with the Egger test and represented graphically with Begg funnel plots of the natural log of the OR versus its standard error. Additional sensitivity analyses were undertaken to evaluate the potential effect of key assumptions and study-level factors on the overall results. Meta-regression models were formed to explore potential heterogeneity as a result of potential risk factors or confounders on outcomes. A tria sequential analysis (TSA) was performed with the aim to maintain an over- all 5 % risk of type I error, being the standard in most meta- analyses and systematic reviews. Results 58 articles reported combined stroke and mortality rates within 30 days of treatment. In the unselected overall meta-analysis, the incidence of stroke and death in the male and female groups differed significantly (Peto OR, 1,162; 95 % CI, 1.067-1.266; P = .001), revealing a worse outcome for female patients. Moderate heterogeneity among the studies was identified (I2 = 36 %), and the possibility of publication bias was low (P = .03). In sensitivity analyses the meta-analysis of case series with gender aspects as a secondary outcome showed a significantly increased risk for 30-day stroke and death in women compared to men (Peto OR, 1.390; 95 % CI, 1.148-1.684; P = .001), In contrast, meta-analysis of databases (Peto OR, 1.025; 95 % CI, 0.958-1.097; P = .474) and case series with gender related outcomes as a primary aim (Peto OR, 1.202; 95 % CI, 0.925-1.561; P = .168) demonstrated no increase in operative risk of stroke and death in women compared to men. Conclusions Metanalyses of case series and databases dealing with CEA reveal inconsistent results regarding gender differences related to CEA-procedure and should not be transferred into clinical practice.
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Affiliation(s)
- Thomas Luebke
- Department of Vascular and Endovascular Surgery, University Hospital of Cologne, Kerpener Str. 62, 50937, Cologne, Germay.
| | - Jan Brunkwall
- Department of Vascular and Endovascular Surgery, University Hospital of Cologne, Kerpener Str. 62, 50937, Cologne, Germay.
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Gülcü A, Gezer NS, Men S, Öz D, Yaka E, Öztürk V. Management of free-floating thrombus within the arcus aorta and supra-aortic arteries. Clin Neurol Neurosurg 2014; 125:198-206. [PMID: 25173962 DOI: 10.1016/j.clineuro.2014.08.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 07/18/2014] [Accepted: 08/07/2014] [Indexed: 12/22/2022]
Abstract
INTRODUCTION Clinical management strategy and the best treatment option of free floating thrombus (FFT), detected in patients with acute ischemic cerebrovascular diseases is still uncertain due to the rarity of these conditions. Recent studies emphasize that FFT within cerebral vessels may not be a surgical emergency since complete dissolution without any further neurologic progression occurred in 86% of patients treated medically. The aim of this study was to investigate the effect of medical treatment on the fate of thrombus and the clinical status in acute cerebrovascular event patients with detected FFT in the artery feeding the compromised brain territory at the time of diagnosis. MATERIALS AND METHODS We have retrospectively reviewed the initial and follow up computed tomography angiography, diffusion-weighted magnetic resonance imaging examinations of 37 acute ischemic stroke patients with detected FFT and treated medically. The patients were evaluated for any change of the FFT, residual stenosis after the FFT shrunk or disappeared and neurologic outcome. RESULTS FFT was located in cervical carotid artery, intracranial artery and arcus aorta in 23, 6 and 5 of the patients respectively. Dissection accompanied the FFT in 3 patients. Recanalization was maintained in 34 patients however, three of them suffered from new infarctions. A total occlusion was detected in three patients. Two of them had new infarcts while one was stable during clinical follow-up period. CONCLUSION The results of our retrospective study have shown that FFT in the proximal aorta and supra-aortic arteries tend to resolve with anticoagulant and/or antiplatelet treatment without causing recurrent adverse events in most of the cases. Furthermore, resolution of the clot seems to provide a safer ground for a recanalization procedure like stenting or endarterectomy if needed.
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Affiliation(s)
- Aytaç Gülcü
- Department of Radiology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey.
| | - Naciye Sinem Gezer
- Department of Radiology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey.
| | - Süleyman Men
- Department of Radiology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey.
| | - Didem Öz
- Department of Neurology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey.
| | - Erdem Yaka
- Department of Neurology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey.
| | - Vesile Öztürk
- Department of Neurology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey.
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18
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Bennett KM, Scarborough JE, Shortell CK. Predictors of 30-day postoperative stroke or death after carotid endarterectomy using the 2012 carotid endarterectomy-targeted American College of Surgeons National Surgical Quality Improvement Program database. J Vasc Surg 2014; 61:103-11. [PMID: 25065581 DOI: 10.1016/j.jvs.2014.05.100] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Accepted: 05/31/2014] [Indexed: 10/25/2022]
Abstract
OBJECTIVE This study used a recently released procedure-targeted multicenter data source to determine independent predictors of postoperative stroke or death in patients undergoing carotid endarterectomy (CEA) for carotid artery stenosis. METHODS The 2012 CEA-targeted American College of Surgeons (ACS) National Surgical Quality Improvement Program (NSQIP) database was used for this study. Patient, disease, and procedure characteristics of patients undergoing CEA were assessed. Multivariate logistic regression analysis was used to determine independent risk factors for 30-day postoperative stroke/death or other major complications. RESULTS The analysis included 3845 patients undergoing CEA (58.1% with asymptomatic and 41.9% with symptomatic carotid disease). The overall 30-day postoperative stroke/death rate was 3.0% (1.9% in asymptomatic patients, 4.6% in symptomatic patients). The variables that maintained an independent association with postoperative stroke/death after adjustment for other known patient-related and procedure-related factors were age ≥80 years, active smoking, contralateral internal carotid artery stenosis of 80% to 99%, emergency procedure status, preoperative stroke, presence of one or more ACS NSQIP-defined high-risk characteristics (including any or all of New York Heart Association class III/IV congestive heart failure, left ventricular ejection fraction <30%, recent unstable angina, or recent myocardial infarction), and operative time ≥150 minutes. CONCLUSIONS After adjustment for a comprehensive array of patient-related and procedure-related variables of particular import to patients with carotid artery stenosis, we have identified several factors that are independently associated with early stroke or death after CEA. These factors are generally related to the comorbid condition of CEA patients and to specific characteristics of their carotid disease, and not to technical features of the CEA procedure. Knowledge of these factors will assist surgeons in selecting appropriate patients for this procedure.
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Affiliation(s)
- Kyla M Bennett
- Department of Surgery, Duke University Medical Center, Durham, NC
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Cohen JE, Gomori J, Grigoriadis S, Lylyk I, Ferrario A, Miranda C, Rajz G. Single-staged sequential endovascular stenting in patients with in tandem carotid stenoses. Neurol Res 2013; 30:262-7. [PMID: 17903348 DOI: 10.1179/016164107x230793] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
BACKGROUND AND PURPOSE Simultaneous stenoses at the origin of the internal carotid artery and the carotid siphon, also known as 'in tandem stenoses', are not uncommon. However, the clinical importance of this condition is still a subject of controversy. Surgical and endovascular approaches have been proposed to manage symptomatic patients who fail antithrombotic therapy. METHODS We present a series of eight patients with symptomatic in tandem carotid artery stenoses treated by sequential endovascular stent-assisted angioplasty. In all the cases, the intracranial stenosis was equal to, or greater, than the extracranial stenosis. RESULTS Procedural success, defined as residual stenosis of less than 30% in extracranial and intracranial lesions, was obtained in all the cases. No patient sustained myocardial infarction, stroke or transient ischemic attack (TIA) during the procedure or hospital stay. During a mean clinical follow-up of 12 +/- 3.4 months (range: 7-20 months), there were no neurological events and on angiographic follow-up after 6 months, no patient presented in-stent de novo stenosis. CONCLUSION Endovascular stent-assisted angioplasty appears to be a valid alternative for selected patients with symptomatic in tandem carotid stenoses that are refractory to medical treatment. In most of the cases, the characteristics of intracranial stenoses determine the feasibility of the procedure.
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Affiliation(s)
- José E Cohen
- Department of Neurosurgery, Unit of Endovascular Neurosurgery and Interventional Neuroradiology, Hadassah University Hospital, Jerusalem, Israel
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Dzierwa K, Pieniazek P, Tekieli L, Musialek P, Przewlocki T, Kablak-Ziembicka A, Kosobucka-Peszat R, Machnik R, Trystula M, Podolec P. Carotid artery stenting according to the “tailored CAS” algorithm performed in the very elderly patients: The thirty day outcome. Catheter Cardiovasc Interv 2013; 82:681-8. [PMID: 23825008 DOI: 10.1002/ccd.25025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Revised: 03/12/2013] [Accepted: 05/10/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Karolina Dzierwa
- Department of Cardiac and Vascular Diseases, Institute of Cardiology, Jagiellonian University Medical College, John Paul II hospital, Krakow, Poland
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Bekelis K, Bakhoum SF, Desai A, Mackenzie TA, Goodney P, Labropoulos N. A risk factor-based predictive model of outcomes in carotid endarterectomy: the National Surgical Quality Improvement Program 2005-2010. Stroke 2013; 44:1085-1090. [PMID: 23412374 DOI: 10.1161/strokeaha.111.674358] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE Accurate knowledge of individualized risks and benefits is crucial to the surgical management of patients undergoing carotid endarterectomy (CEA). Although large randomized trials have determined specific cutoffs for the degree of stenosis, precise delineation of patient-level risks remains a topic of debate, especially in real world practice. We attempted to create a risk factor-based predictive model of outcomes in CEA. METHODS We performed a retrospective cohort study involving patients who underwent CEAs from 2005 to 2010 and were registered in the American College of Surgeons National Quality Improvement Project database. RESULTS Of the 35 698 patients, 20 015 were asymptomatic (56.1%) and 15 683 were symptomatic (43.9%). These patients demonstrated a 1.64% risk of stroke, 0.69% risk of myocardial infarction, and 0.75% risk of death within 30 days after CEA. Multivariate analysis demonstrated that increasing age, male sex, history of chronic obstructive pulmonary disease, myocardial infarction, angina, congestive heart failure, peripheral vascular disease, previous stroke or transient ischemic attack, and dialysis were independent risk factors associated with an increased risk of the combined outcome of postoperative stroke, myocardial infarction, or death. A validated model for outcome prediction based on individual patient characteristics was developed. There was a steep effect of age on the risk of myocardial infarction and death. CONCLUSIONS This national study confirms that that risks of CEA vary dramatically based on patient-level characteristics. Because of limited discrimination, it cannot be used for individual patient risk assessment. However, it can be used as a baseline for improvement and development of more accurate predictive models based on other databases or prospective studies.
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Affiliation(s)
- Kimon Bekelis
- Section of Neurosurgery (K.B., A.D.), Department of Medicine (T.A.M.), and Section of Vascular Surgery (P.G.), Dartmouth-Hitchcock Medical Center, Lebanon, NH; Geisel School of Medicine at Dartmouth (S.F.B.), Hanover, NH; and Section of Vascular Surgery, State University of New York at Stony Brook, Stony Brook, NY (N.L.)
| | - Samuel F Bakhoum
- Section of Neurosurgery (K.B., A.D.), Department of Medicine (T.A.M.), and Section of Vascular Surgery (P.G.), Dartmouth-Hitchcock Medical Center, Lebanon, NH; Geisel School of Medicine at Dartmouth (S.F.B.), Hanover, NH; and Section of Vascular Surgery, State University of New York at Stony Brook, Stony Brook, NY (N.L.)
| | - Atman Desai
- Section of Neurosurgery (K.B., A.D.), Department of Medicine (T.A.M.), and Section of Vascular Surgery (P.G.), Dartmouth-Hitchcock Medical Center, Lebanon, NH; Geisel School of Medicine at Dartmouth (S.F.B.), Hanover, NH; and Section of Vascular Surgery, State University of New York at Stony Brook, Stony Brook, NY (N.L.)
| | - Todd A Mackenzie
- Section of Neurosurgery (K.B., A.D.), Department of Medicine (T.A.M.), and Section of Vascular Surgery (P.G.), Dartmouth-Hitchcock Medical Center, Lebanon, NH; Geisel School of Medicine at Dartmouth (S.F.B.), Hanover, NH; and Section of Vascular Surgery, State University of New York at Stony Brook, Stony Brook, NY (N.L.)
| | - Philip Goodney
- Section of Neurosurgery (K.B., A.D.), Department of Medicine (T.A.M.), and Section of Vascular Surgery (P.G.), Dartmouth-Hitchcock Medical Center, Lebanon, NH; Geisel School of Medicine at Dartmouth (S.F.B.), Hanover, NH; and Section of Vascular Surgery, State University of New York at Stony Brook, Stony Brook, NY (N.L.)
| | - Nicos Labropoulos
- Section of Neurosurgery (K.B., A.D.), Department of Medicine (T.A.M.), and Section of Vascular Surgery (P.G.), Dartmouth-Hitchcock Medical Center, Lebanon, NH; Geisel School of Medicine at Dartmouth (S.F.B.), Hanover, NH; and Section of Vascular Surgery, State University of New York at Stony Brook, Stony Brook, NY (N.L.)
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Vellimana AK, Kadkhodayan Y, Rich KM, Cross DT, Moran CJ, Zazulia AR, Lee JM, Chicoine MR, Dacey RG, Derdeyn CP, Zipfel GJ. Symptomatic patients with intraluminal carotid artery thrombus: outcome with a strategy of initial anticoagulation. J Neurosurg 2012; 118:34-41. [PMID: 23061393 DOI: 10.3171/2012.9.jns12406] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT The aim of this study was to define the optimal treatment for patients with symptomatic intraluminal carotid artery thrombus (ICAT). METHODS The authors performed a retrospective chart review of patients who had presented with symptomatic ICAT at their institution between 2001 and 2011. RESULTS Twenty-four patients (16 males and 8 females) with ICAT presented with ischemic stroke (18 patients) or transient ischemic attack ([TIA], 6 patients). All were initially treated using anticoagulation with or without antiplatelet drugs. Eight of these patients had no or only mild carotid artery stenosis on initial angiography and were treated with medical management alone. The remaining 16 patients had moderate or severe carotid stenosis on initial angiography; of these, 10 underwent delayed revascularization (8 patients, carotid endarterectomy [CEA]; 2 patients, angioplasty and stenting), 2 refused revascularization, and 4 were treated with medical therapy alone. One patient had multiple TIAs despite medical therapy and eventually underwent CEA; the remaining 23 patients had no TIAs after treatment. No patient suffered ischemic or hemorrhagic stroke while on anticoagulation therapy, either during the perioperative period or in the long-term follow-up; 1 patient died of an unrelated condition. The mean follow-up was 16.4 months. CONCLUSIONS Results of this study suggest that initial anticoagulation for symptomatic ICAT leads to a low rate of recurrent ischemic events and that carotid revascularization, if indicated, can be safely performed in a delayed manner.
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Affiliation(s)
- Ananth K Vellimana
- Department of Neurological Surgery, Washington University School of Medicine in St. Louis, Missouri 63110, USA
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Siddiqui AH, Natarajan SK, Hopkins LN, Levy EI. Carotid artery stenting for primary and secondary stroke prevention. World Neurosurg 2012; 76:S40-59. [PMID: 22182271 DOI: 10.1016/j.wneu.2011.06.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Accepted: 06/09/2011] [Indexed: 11/19/2022]
Abstract
BACKGROUND Carotid artery disease is a major cause of the disability and mortality associated with strokes. Ischemic stroke remains the major cause of adult disability and third-leading cause of adult mortality, and carotid revascularization currently remains the principal surgical tool in the prophylaxis of this disease. METHODS The literature representing the current body of evidence for carotid revascularization and the authors' current practices in the management of this disease are summarized in this review. RESULTS We provide an evidence-based narration of the development and current status of carotid artery stenting (CAS) by reviewing 1) the evidence for carotid revascularization from early carotid endarterectomy (CEA) trials; 2) the randomized trials comparing CEA and CAS, with a special emphasis on the recently published results of the Carotid Revascularization Endarterectomy versus Stenting Trial (CREST), which have been a "game-changer," tipping the balance towards accepting CAS as a safe, equally effective, and durable alternative to CEA for all patients requiring carotid revascularization; and 3) the technical advances in CAS after enrollment of patients in the CREST. CONCLUSIONS CAS and CEA are complementary procedures. Judicious selection of the procedure is made on a case-by-case basis.
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Affiliation(s)
- Adnan H Siddiqui
- Department of Neurosurgery, School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, New York, USA.
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Khatri R, Chaudhry SA, Vazquez G, Rodriguez GJ, Hassan AE, Suri MFK, Qureshi AI. Age differential between outcomes of carotid angioplasty and stent placement and carotid endarterectomy in general practice. J Vasc Surg 2012; 55:72-8. [PMID: 22070935 PMCID: PMC5654716 DOI: 10.1016/j.jvs.2011.08.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2011] [Revised: 07/06/2011] [Accepted: 08/04/2011] [Indexed: 10/15/2022]
Abstract
BACKGROUND Data derived from prospective randomized clinical trials suggest differential comparative benefit between carotid angioplasty and stent (CAS) placement and carotid endarterectomy (CEA) in various age strata. We sought to investigate the impact of age on outcomes of CAS and CEA in general practice. METHODS We analyzed the data from the Nationwide Inpatient Sample (NIS), which is representative of all admissions in the United States from 2005 to 2008. The primary end point was occurrence of stroke, cardiac complications, or death during the postprocedural period. Outcomes of interest were compared between patients aged ≥70 years and <70 years, undergoing CEA and CAS. Multivariate logistic regression was performed to determine the effect of age on occurrence of postoperative stroke, cardiac complications, or death. Covariates included in the logistic regression were patient's age, gender, comorbid conditions, including hypertension, diabetes mellitus (DM), chronic lung disease, coronary artery disease (CAD), congestive heart failure (CHF), and renal failure; symptom status (symptomatic vs asymptomatic status), and hospital characteristics. RESULTS Of the total 495,331 estimated patients who received treatment for CAD during the study period, 88% underwent CEA and the remaining 12% underwent CAS. Of the total procedures, 41% of the procedures were performed in patients aged <70 years compared to the remaining 59% that were performed among patients aged ≥70 years. For patients undergoing CAS, age ≥70 years was an important predictor of postoperative stroke (P = .0025; odds ratio [OR], 1.7; 95% confidence interval [CI], 1.2-2.5) and cardiac complications postprocedure (P = .045; OR, 1.3; 95% CI, 1.0-1.6). For patients undergoing CEA, age ≥70 years was associated with higher cardiac complications (P < .001; OR, 1.5; 95% CI, 1.3-1.7) and higher postoperative mortality risk (P = .0008; OR, 1.4; 95% CI, 1.1-1.8) compared to patients aged <70 years. The increased risk of composite end point (postoperative stroke/cardiac complications/mortality) among patients aged ≥70 years was a significant factor for patients undergoing either CAS or CEA (OR of 1.3 for both procedures). CONCLUSION Our analysis suggests that most CAS and CEAs are performed in patients aged ≥70 years in general practice, and higher rates of postoperative complications are observed among these patients regardless of procedure choice.
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Affiliation(s)
- Rakesh Khatri
- Zeenat Qureshi Stroke Research Center, Department of Neurology, University of Minnesota, Minneapolis, Minnesota, USA.
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Semi-automatic quantitative measurements of intracranial internal carotid artery stenosis and calcification using CT angiography. Neuroradiology 2011; 54:919-27. [PMID: 22205339 PMCID: PMC3435515 DOI: 10.1007/s00234-011-0998-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Accepted: 12/09/2011] [Indexed: 11/17/2022]
Abstract
Introduction Intracranial carotid artery atherosclerotic disease is an independent predictor for recurrent stroke. However, its quantitative assessment is not routinely performed in clinical practice. In this diagnostic study, we present and evaluate a novel semi-automatic application to quantitatively measure intracranial internal carotid artery (ICA) degree of stenosis and calcium volume in CT angiography (CTA) images. Methods In this retrospective study involving CTA images of 88 consecutive patients, intracranial ICA stenosis was quantitatively measured by two independent observers. Stenoses were categorized with cutoff values of 30% and 50%. The calcification in the intracranial ICA was qualitatively categorized as absent, mild, moderate, or severe and quantitatively measured using the semi-automatic application. Linear weighted kappa values were calculated to assess the interobserver agreement of the stenosis and calcium categorization. The average and the standard deviation of the quantitative calcium volume were calculated for the calcium categories. Results For the stenosis measurements, the CTA images of 162 arteries yielded an interobserver correlation of 0.78 (P < 0.001). Kappa values of the categorized stenosis measurements were moderate: 0.45 and 0.58 for cutoff values of 30% and 50%, respectively. The kappa value for the calcium categorization was 0.62, with a good agreement between the qualitative and quantitative calcium assessment. Conclusions Quantitative degree of stenosis measurement of the intracranial ICA on CTA is feasible with a good interobserver agreement ICA. Qualitative calcium categorization agrees well with quantitative measurements.
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Siddiqui FM, Hassan AE, Tariq N, Yacoub H, Vazquez G, Suri MFK, Taylor RA, Qureshi AI. Endovascular Management of Symptomatic Extracranial Stenosis Associated with Secondary Intracranial Tandem Stenosis. A Multicenter Review. J Neuroimaging 2011; 22:243-8. [DOI: 10.1111/j.1552-6569.2011.00611.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Gupta PK, Pipinos II, Miller WJ, Gupta H, Shetty S, Johanning JM, Longo GM, Lynch TG. A Population-Based Study of Risk Factors for Stroke After Carotid Endarterectomy Using the ACS NSQIP Database. J Surg Res 2011; 167:182-91. [DOI: 10.1016/j.jss.2010.10.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Revised: 08/19/2010] [Accepted: 10/13/2010] [Indexed: 11/30/2022]
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Calvillo-King L, Xuan L, Zhang S, Tuhrim S, Halm EA. Predicting risk of perioperative death and stroke after carotid endarterectomy in asymptomatic patients: derivation and validation of a clinical risk score. Stroke 2010; 41:2786-94. [PMID: 21051669 DOI: 10.1161/strokeaha.110.599019] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND AND PURPOSE National guidelines on carotid endarterectomy (CEA) for asymptomatic patients state that the procedure should be performed with a ≤ 3% risk of perioperative death or stroke. We developed and validated a multivariate model of risk of death or stroke within 30 days of CEA for asymptomatic disease and a related clinical prediction rule. METHODS We analyzed asymptomatic cases in a population-based cohort of CEAs performed in Medicare beneficiaries in New York State. Medical records were abstracted for sociodemographics, neurologic history, disease severity, diagnostic imaging data, comorbidities, and deaths and strokes within 30 days of surgery. We used multivariate logistic regression to identify independent predictors of perioperative death or stroke. The CEA-8 clinical risk score was derived from the final model. RESULTS Among the 6553 patients, the mean age was 74 years, 55% were male, 62% had coronary artery disease, and 22% had a history of distant stroke or transient ischemic attack. The perioperative rate of death or stroke was 3.0%. Multivariable predictors of perioperative events were female sex (odds ratio [OR] = 1.5; 95% CI, 1.1 to 1.9), nonwhite race (OR = 1.8; 95% CI, 1.1 to 2.9), severe disability (OR = 3.7; 95% CI, 1.8 to 7.7), congestive heart failure (OR = 1.6; 95% CI, 1.1 to 2.4), coronary artery disease (OR = 1.6; 95% CI, 1.2 to 2.2), valvular heart disease (OR = 1.5; 95% CI, 1.1 to 2.3), a distant history of stroke or transient ischemic attack (OR = 1.5; 95% CI, 1.1 to 2.0), and a nonoperated stenosis ≥ 50% (OR = 1.8; 95% CI, 1.3 to 2.3). The CEA-8 risk score stratified patients with a predicted probability of death or stroke rate from 0.6% to 9.6%. CONCLUSIONS Several sociodemographic, neurologic severity, and comorbidity factors predicted the risk of perioperative death or stroke in asymptomatic patients. The CEA-8 risk score can help clinicians calculate a predicted probability of complications for an individual patient to help inform the decision about revascularization.
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Affiliation(s)
- Linda Calvillo-King
- Division of General Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390-8889, USA
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Intracranial Occlusions and Internal Carotid Artery Stenoses: Clinical Implications. Ann Vasc Surg 2010; 24:786-93. [DOI: 10.1016/j.avsg.2010.02.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2009] [Revised: 12/19/2009] [Accepted: 02/18/2010] [Indexed: 11/22/2022]
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Yilmaz H, Pereira VM, Narata AP, Sztajzel R, Lovblad KO. Carotid artery stenting: rationale, technique, and current concepts. Eur J Radiol 2010; 75:12-22. [PMID: 20547022 DOI: 10.1016/j.ejrad.2010.04.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2010] [Accepted: 03/31/2010] [Indexed: 10/19/2022]
Abstract
Carotid stenosis is a major risk factor for stroke. With the aging of the general population and the availability of non-invasive vascular imaging studies, the diagnosis of a carotid plaque is commonly made in medical practice. Asymptomatic and symptomatic carotid stenoses need to be considered separately because their natural history is different. Two large randomized controlled trials (RCTs) showed the effectiveness of carotid endarterectomy (CEA) in preventing ipsilateral ischemic events in patients with symptomatic severe stenosis. The benefit of surgery is much less for moderate stenosis and harmful in patients with stenosis less than 50%. Surgery has a marginal benefit in patients with asymptomatic stenosis. Improvements in medical treatment must be taken into consideration when interpreting the results of these previous trials which compared surgery against medical treatment available at the time the trials were conducted. Carotid artery stenting (CAS) might avoid the risks associated with surgery, including cranial nerve palsy, myocardial infarction, or pulmonary embolism. Therefore and additionally to well-established indications of CAS, this endovascular approach might be a valid alternative particularly in patients at high surgical risk. However, trials of endovascular treatment of carotid stenosis have failed to provide enough evidence to justify routine CAS as an alternative to CEA in patients suitable for surgery. More data from ongoing randomized trials of CEA versus CAS will be soon available. These results will help determining the role of CAS in the management of patients with carotid artery stenosis.
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Affiliation(s)
- Hasan Yilmaz
- Department of Interventional and Diagnostic Neuroradiology, University Hospital of Geneva, Switzerland.
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Abstract
Treatment of high-grade symptomatic carotid stenosis via carotid endarterectomy has been shown to be superior to medical management alone in several studies. Carotid angioplasty and stenting (CAS) has emerged as an alternative approach to endarterectomy to reduce the associated perioperative risks. Several anatomic and physiologic factors that increase the risk of stroke and/or death associated with endarterectomy have been identified. The alternative approach of CAS has been found to be noninferior to endarterectomy for high surgical risk patients with severe symptomatic carotid stenosis and the use of this procedure is supported by the current widely accepted guidelines. In patients with standard surgical risk, the differential benefit of CAS compared with endarterectomy is not clear. Several advantages of CAS have been identified in previous studies in selected patients. The results of CAS will undoubtedly continue to improve with advances in device designs, technological expertise, and appropriate patient selection.
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Li ZY, Taviani V, Tang T, Sutcliffe MPF, Gillard JH. The hemodynamic effects of in-tandem carotid artery stenosis: implications for carotid endarterectomy. J Stroke Cerebrovasc Dis 2010; 19:138-45. [PMID: 20189090 DOI: 10.1016/j.jstrokecerebrovasdis.2009.03.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2009] [Revised: 03/04/2009] [Accepted: 03/09/2009] [Indexed: 10/19/2022] Open
Abstract
OBJECTIVES It remains controversial whether patients with severe disease of the internal carotid artery and a coexisting stenotic lesion downstream would benefit from a carotid endarterectomy (CEA) of the proximal lesion. The aim of this study was to simulate the hemodynamic and wall shear effects of in-tandem internal carotid artery stenosis using a computational fluid dynamic (CFD) idealized model to give insight into the possible consequences of CEA on these lesions. METHODS A CFD model of steady viscous flow in a rigid tube with two asymmetric stenoses was introduced to simulate blood flow in arteries with multiple constrictions. The effect of varying the distance between the two stenoses, and the severity of the upstream stenosis on the pressure and wall shear stress (WSS) distributions on the second plaque, was investigated. The influence of the relative positions of the two stenoses was also assessed. RESULTS The distance between the plaques was found to have minimal influence on the overall hemodynamic effect except for the presence of a zone of low WSS (range -20 to 30 dyne/cm2) adjacent to both lesions when the two stenoses were sufficiently close (<4 times the arterial diameter). The upstream stenosis was protective if it was larger than the downstream stenosis. The relative positions of the stenoses were found to influence the WSS but not the pressure distribution. CONCLUSIONS The geometry and positions of the lesions need to be considered when considering the hemodynamic effects of an in-tandem stenosis. Low WSS is thought to cause endothelial dysfunction and initiate atheroma formation. The fact that there was a flow recirculation zone with low WSS in between the two stenoses may demonstrate how two closely positioned plaques may merge into one larger lesion. Decision making for CEA may need to take into account the hemodynamic situation when an in-tandem stenosis is found. CFD may aid in the risk stratification of patients with this problem.
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Affiliation(s)
- Zhi-Yong Li
- University Department of Radiology, Cambridge University Hospitals National Health Service Foundation Trust, United Kingdom.
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Stoneham M, Thompson J. Arterial pressure management and carotid endarterectomy. Br J Anaesth 2009; 102:442-52. [DOI: 10.1093/bja/aep012] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
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Karkos CD, Hernandez-Lahoz I, Naylor AR. Urgent Carotid Surgery in Patients with Crescendo Transient Ischaemic Attacks and Stroke-in-Evolution: A Systematic Review. Eur J Vasc Endovasc Surg 2009; 37:279-88. [PMID: 19162516 DOI: 10.1016/j.ejvs.2008.12.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2008] [Accepted: 12/01/2008] [Indexed: 11/29/2022]
Affiliation(s)
- C D Karkos
- Department of Vascular and Endovascular Surgery, Leicester Royal Infirmary, Leicester, UK.
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Patterson BO, Holt PJ, Hinchliffe RJ, Thompson MM, Loftus IM. Urgent Carotid Endarterectomy for Patients with Unstable Symptoms: Systematic Review and Meta-Analysis of Outcomes. Vascular 2009; 17:243-52. [DOI: 10.2310/6670.2009.00038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Current evidence suggests that carotid endarterectomy (CEA) performed within 2 weeks of symptoms produces better long-term results than if it is delayed. Urgent endarterectomy following unstable presentations such as crescendo transient ischemic attack (cTIA) or progressive stroke has been associated with variable results. The evidence for this treatment strategy required reviewing. A systematic review of articles related to urgent CEA between 1980 and 2008 was performed. For cTIA, there was an odds ratio of 5.6 (95% confidence interval 3.3–9.7, p ≤ .0001) for combined stroke or death compared with surgery for “standard” indications. For unstable stroke, the odds ratio was 5.5 (95% confidence interval 3.1–9.3, p ≤ .0001). Patients with unstable neurologic presentations are at higher risk of complications if operated on urgently. Clearer definitions would help more precise patient selection to avoid inadvertently operating on patients with an unacceptably high risk of poor outcome.
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Affiliation(s)
| | - Peter J. Holt
- *Department of Vascular Surgery, St George's Vascular Institute, London, UK
| | | | - Matt M. Thompson
- *Department of Vascular Surgery, St George's Vascular Institute, London, UK
| | - Ian M. Loftus
- *Department of Vascular Surgery, St George's Vascular Institute, London, UK
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Halm EA, Tuhrim S, Wang JJ, Rockman C, Riles TS, Chassin MR. Risk factors for perioperative death and stroke after carotid endarterectomy: results of the new york carotid artery surgery study. Stroke 2008; 40:221-9. [PMID: 18948605 DOI: 10.1161/strokeaha.108.524785] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE The benefit of carotid endarterectomy is heavily influenced by the risk of perioperative death or stroke. This study developed a multivariable model predicting the risk of death or stroke within 30 days of carotid endarterectomy. METHODS The New York Carotid Artery Surgery (NYCAS) Study is a population-based cohort of 9308 carotid endarterectomies performed on Medicare patients from January 1998 through June 1999 in New York State. Detailed clinical data were abstracted from medical charts to assess sociodemographic, neurological, and comorbidity risk factors. Deaths and strokes within 30 days of surgery were confirmed by physician overreading. Multivariable logistic regression was used to identify independent patient risk factors. RESULTS The 30-day rate of death or stroke was 2.71% among asymptomatic patients with no history of stroke/transient ischemic attack (TIA), 4.06% among asymptomatic ones with a distant history of stroke/TIA, 5.62% among those operated on for carotid TIA, 7.89% of those with stroke, and 13.33% in those with crescendo TIA/stroke-in-evolution. Significant multivariable predictors of death or stroke included: age >/=80 years (OR, 1.30; 95% CI, 1.03 to 1.64), nonwhite (OR, 1.83; 1.23 to 2.72), admission from the emergency department (OR, 1.95; 1.50 to 2.54), asymptomatic but distant history of stroke/TIA (OR, 1.40; 1.02 to 1.94), TIA as an indication for surgery (OR, 1.81; 1.39 to 2.36), stroke as the indication (OR, 2.40; 1.74 to 3.31), crescendo TIA/stroke-in-evolution (OR, 3.61; 1.15 to 11.28), contralateral carotid stenosis >/=50% (OR, 1.44; 1.15 to 1.79), severe disability (OR, 2.94; 1.91 to 4.50), coronary artery disease (OR, 1.51; 1.20 to 1.91), and diabetes on insulin (OR, 1.55; 1.10 to 2.18). Presence of a deep carotid ulcer was of borderline significance (OR, 2.08; 0.93 to 4.68). CONCLUSIONS Several sociodemographic, neurological, and comorbidity risk factors predicted perioperative death or stroke after carotid endarterectomy. This information may help inform decisions about appropriate patient selection, assessments about the impact of different surgical processes of care on outcomes, and facilitate comparisons of risk-adjusted outcomes among providers.
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Affiliation(s)
- Ethan A Halm
- Department of Internal Medicine and Clinical Sciences, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390-8889, USA.
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Carotid endarterectomy, stenting, and other prophylactic interventions. HANDBOOK OF CLINICAL NEUROLOGY 2008. [PMID: 18793902 DOI: 10.1016/s0072-9752(08)94065-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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Ecker RD, Tummala RP, Levy EI, Hopkins LN. "Internal cross-clamping" for symptomatic internal carotid artery thrombus. Report of two cases. J Neurosurg 2008; 107:1223-7. [PMID: 18077962 DOI: 10.3171/jns-07/12/1223] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Both carotid endarterectomy and carotid artery stent placement with filter embolic protection present a higher risk for patients with internal carotid artery (ICA) lesions containing intraluminal thrombus. Despite the risk associated with intervention, patients with symptomatic intraluminal thrombus who were enrolled in the North American Symptomatic Endarterectomy Trial did better with surgical than medical treatment. We describe the novel use of an endovascular "internal cross-clamping" technique in two patients with symptomatic intraluminal thrombus in the ICA. A 57-year-old woman presented with a history of multiple episodes of left upper-extremity numbness, mild dysarthria, and agraphia occurring over the previous 24 hours. Cranial magnetic resonance imaging revealed a scattered watershed infarction of the right hemisphere and a critical stenosis of the right ICA. An 81-year-old man awoke with hemiplegia and inability to follow commands after undergoing a complicated carotid endarterectomy. Computed tomographic perfusion imaging demonstrated an increased time to peak in the left middle cerebral territory, and emergent angiography demonstrated both intimal flaps and thrombus in the endarterectomy bed. The lesions in both patients were treated with endovascular stent placement using both proximal and distal flow occlusion--a functional "internal cross-clamping"--for embolic protection. To our knowledge, this is the first report of internal trapping and stent placement for symptomatic carotid stenosis containing intraluminal thrombus. This treatment strategy should be added to the armamentarium of endovascular surgeons in selected patients with symptomatic carotid intraluminal thrombus.
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Affiliation(s)
- Robert D Ecker
- Department of Neurosurgery and Toshiba Stroke Research Center, State University of New York, USA
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Hopkins LN, Myla S, Grube E, Wehman JC, Levy EI, Bersin RM, Joye JD, Allocco DJ, Kelley L, Baim DS. Carotid artery revascularization in high surgical risk patients with the NexStent and the Filterwire EX/EZ. Catheter Cardiovasc Interv 2008; 71:950-60. [PMID: 18412236 DOI: 10.1002/ccd.21564] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- L Nelson Hopkins
- Department of Neurosurgery, University of Buffalo and Toshiba Stroke Center, Buffalo, New York 14209, USA.
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Corriere MA, Dattilo JB, Madigan MC, Guzman RJ, Naslund TC, Passman MA. Risk factors and angiographic technical considerations to guide carotid intervention. Ann Vasc Surg 2007; 22:52-7. [PMID: 18083337 DOI: 10.1016/j.avsg.2007.07.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2007] [Revised: 06/08/2007] [Accepted: 07/16/2007] [Indexed: 11/16/2022]
Abstract
Carotid angioplasty and stenting (CAS) with embolic protection is currently accepted as treatment for patients considered to be at high risk for carotid endarterectomy (CEA). The purpose of this study was (1) to determine what proportion of patients treated with CEA would be categorized as "high" risk by currently accepted criteria, (2) to characterize preoperative angiographic findings in patients with carotid stenosis, and (3) to determine the potential technical challenges of CAS in these patients. Consecutive patients who underwent CEA from January 1999 through August 2004 prior to introduction of CAS at our institution were identified. Demographics, indications, perioperative complications, and deaths were reviewed. Published guidelines defining high risk for CEA were applied, and preoperative angiograms were examined for technical limitations to CAS. Two hundred and seventy-nine CEAs were performed in 259 patients for asymptomatic carotid occlusive disease (57%), transient ischemic attacks (35%), or stroke (8%) during the study period. Of these, 35.5% (n = 99) would have met one or more high-risk criteria. Overall risks of perioperative stroke, myocardial infarction, and death were 1.1%, 2.2%, and 0.4% (n = 279), respectively, with a combined major complication rate of 3.3%. No difference in major complication rates was observed between standard-risk and high-risk patients. Preoperative angiograms were available for review in 83.5% of CEAs (n = 233). The distribution of aortic arch configurations included types I (3.5%), IIa (39.5%), IIb (54.5%), and III (1.3%). Aortic arch anomalies were observed in 15.5% (n = 35) of angiograms. There were 77.7% (n = 181) with one or more angiographic findings that would have increased the technical difficulty of CAS, but only 17.6% had relative angiographic contraindications to CAS. A significant proportion of patients with carotid stenosis previously managed with CEA would be categorized as high risk and considered potential candidates for CAS by currently accepted criteria. Based on preoperative angiography, technically challenging factors, some of which limit the ability to perform CAS, are common and should be anticipated when planning CAS.
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Affiliation(s)
- Matthew A Corriere
- Department of Surgery, Vanderbilt University Medical Center, Nashville, TN 37232-2735, USA
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Racial and Ethnic Disparities in the Treatment of Cerebrovascular Diseases: Importance to the Practicing Neurosurgeon. Neurocrit Care 2007; 9:55-73. [DOI: 10.1007/s12028-007-9039-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Karkos CD, McMahon G, McCarthy MJ, Dennis MJ, Sayers RD, London NJM, Naylor AR. The value of urgent carotid surgery for crescendo transient ischemic attacks. J Vasc Surg 2007; 45:1148-54. [PMID: 17543679 DOI: 10.1016/j.jvs.2007.02.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2005] [Accepted: 02/06/2007] [Indexed: 11/16/2022]
Abstract
OBJECTIVE This study audited operative risk in patients undergoing urgent carotid surgery for crescendo transient ischemic attacks (TIAs). METHODS Interrogation of the vascular unit database (January 1992 to July 2004) identified 42 patients operated on urgently for crescendo TIAs, which were defined as>or=3 TIAs within the preceding 7 days. Stroke, death, and any major cardiac events were analyzed. RESULTS Thirty-nine patients underwent conventional endarterectomy, and three underwent interposition vein bypass. Crescendo TIA patients had sustained a median of five TIAs (range, 3 to 20) in the 7 days before surgery. Three patients died or had a stroke after surgery, for a combined stroke/death rate of 7%. This compares with 2.4% in 1000 patients undergoing elective carotid endarterectomy in this unit during the same time period. The combined stroke/death/major cardiac event rate was 14% (n=6). CONCLUSIONS The combined risk of neurologic and cardiac complications after urgent carotid surgery for crescendo TIA is higher than that expected after elective cases but is still acceptable considering the natural history of patients with unstable neurologic symptoms.
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Affiliation(s)
- Christos D Karkos
- Department of Vascular and Endovascular Surgery, Leicester Royal Infirmary, Leicester, United Kingdom.
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Hanel RA, Levy EI, Hopkins LN. Cervical carotid revascularization: the case for carotid angioplasty with stenting. Neurosurgery 2006; 59:S228-41; discussion S3-13. [PMID: 17053608 DOI: 10.1227/01.neu.0000237457.79690.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Carotid artery angioplasty with or without stent placement has evolved as an alternative to carotid endarterectomy, particularly for those patients in whom carotid endarterectomy is associated with a higher risk of complications. This article summarizes the selection criteria for participation in and the results of several carotid intervention trials, reviews the relative indications and limitations for both surgical and endovascular revascularization approaches, and describes the technique for and results associated with carotid stenting. The discussion is presented from the vantage of neurosurgeons who are experienced in both revascularization approaches.
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Affiliation(s)
- Ricardo A Hanel
- Department of Neurosurgery, School of Medicine and Biomedical Sciences, State University of New York, Buffalo 14209-1194, USA
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McGirt MJ, Woodworth GF, Brooke BS, Coon AL, Jain S, Buck D, Huang J, Clatterbuck RE, Tamargo RJ, Perler BA. Hyperglycemia independently increases the risk of perioperative stroke, myocardial infarction, and death after carotid endarterectomy. Neurosurgery 2006; 58:1066-73; discussion 1066-73. [PMID: 16723885 DOI: 10.1227/01.neu.0000215887.59922.36] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE Clinical and experimental evidence suggests that hyperglycemia lowers the neuronal ischemic threshold, potentiates stroke volume in focal ischemia, and is associated with morbidity and mortality in the surgical critical care setting. It remains unknown whether hyperglycemia during carotid endarterectomy (CEA) predisposes patients to perioperative stroke and operative related morbidity and mortality. METHODS The clinical and radiological records of all patients undergoing CEA and operative day glucose measurement from 1994 to 2004 at an academic institution were reviewed and 30-day outcomes were assessed. The independent association of operative day glucose before CEA and perioperative morbidity and mortality were assessed via multivariate logistic regression analysis. RESULTS One thousand two hundred and one patients with a mean age of 72 +/- 10 years (748 men, 453 women) underwent CEA (676 asymptomatic, 525 symptomatic). Overall, stroke occurred in 46 (3.8%) patients, transient ischemic attack occurred in 19 (1.6%), myocardial infarction occurred in 19 (1.6%), and death occurred in 17 (1.4%). Increasing operative day glucose was independently associated with perioperative stroke or transient ischemic attack (Odds ratio [OR], 1.005; 95% confidence interval [CI], 1.00-1.01; P = 0.03), myocardial infarction (OR, 1.01; 95% CI, 1.004-1.016; P = 0.017), and death (OR, 1.007; 95% CI, 1.00-1.015; P = 0.04). Patients with operative day glucose greater than 200 mg/dl were 2.8-fold, 4.3-fold, and 3.3-fold more likely to experience perioperative stroke or transient ischemic attack (OR, 2.78; 95% CI, 1.37-5.67; P = 0.005), myocardial infarction (OR, 4.29; 95% CI, 1.28-14.4; P = 0.018), or death (OR, 3.29; 95% CI, 1.07-10.1; P = 0.037), respectively. Median and interquartile range length of hospitalization was greater for patients with operative day glucose greater than 200 mg/dl (4 d [interquartile range, 2-15 d] versus 3 d [interquartile range, 2-7 d]; P < 0.05). CONCLUSION Independent of previous cardiac disease, diabetes, or other comorbidities, hyperglycemia at the time of CEA was associated with an increased risk of perioperative stroke or transient ischemic attack, myocardial infarction, and death. Strict glucose control should be attempted before surgery to minimize the risk of morbidity and mortality after CEA.
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Affiliation(s)
- Matthew J McGirt
- Department of Neurosurgery, The Johns Hopkins School of Medicine, Baltimore, Maryland, USA
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Gates PC, Chambers B, Yan B, Chong W, Denton M. Symptomatic and asymptomatic carotid stenosis: just when we thought we had all the answers. Intern Med J 2006; 36:445-51. [PMID: 16780451 DOI: 10.1111/j.1445-5994.2006.01085.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The management of symptomatic and asymptomatic carotid stenosis has been a hotly debated topic for decades. The publication of four randomized controlled trials of carotid endarterectomy has clarified many of the issues. Patients with symptomatic carotid stenosis >70% benefit most with an absolute risk reduction of 17% over 2 years with numbers needed to treat of 3-6, whereas in patients with asymptomatic carotid stenosis >60%, the absolute risk reduction is 1% per annum (numbers needed to treat = 14-17). There is doubt about the benefit in women >70 years of age with asymptomatic stenosis. Carotid angioplasty and stenting is in its infancy and may one day supplant carotid endarterectomy as the treatment of choice; however, currently indications for this procedure include participation in randomized controlled trials, surgically inaccessible stenosis, in patients with combined symptomatic carotid and symptomatic coronary artery disease or in patients with severe co-morbidities that preclude formal carotid endarterectomy.
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Affiliation(s)
- P C Gates
- Neuroscience Department, Geelong Hospital, Geelong, Australia.
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Barth A, Arnold M, Mattle HP, Schroth G, Remonda L. Contrast-Enhanced 3-D MRA in Decision Making for Carotid Endarterectomy: A 6-Year Experience. Cerebrovasc Dis 2006; 21:393-400. [PMID: 16534196 DOI: 10.1159/000091964] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2005] [Accepted: 11/07/2005] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Systematic need for angiography in diagnosis of carotid artery stenosis and indication of surgical therapy is still debated. Noninvasive imaging techniques such as MR angiography (MRA) or CT angiography (CTA) offer an alternative to digital subtraction angiography (DSA) and are increasingly used in clinical practice. In this study, we present the radiological characteristics and clinical results of a series of patients operated on the basis of combined ultrasonography (US)/MRA. METHODS This observational study included all the patients consecutively operated for a carotid stenosis in our Department from October 1998 to December 2004. The applied MRA protocol had previously been established in a large correlation study with DSA. DSA was used only in case of discordance between US and MRA. The preoperative radiological information furnished by MRA was compared with intraoperative findings. The outcome of the operation was assessed according to ECST criteria. RESULTS Among 327 patients, preoperative MRA was performed in 278 (85%), DSA in 44 (13.5%) and CT angiography in 5 (1.5%). Most of DSA studies were performed as emergency for preparation of endovascular therapy or for reasons other than carotid stenosis. Eleven additional DSA (3.3%) complemented US/MRA, mostly because diverging diagnosis of subocclusion of ICA. No direct morbidity or intraoperative difficulty was related to preoperative MRA. Combined mortality/major morbidity rate was 0.9% (3 patients) and minor morbidity rate 5.5% (18 patients). CONCLUSIONS This observational study describes a well-established practice of carotid surgery and supports the exclusive use of non invasive diagnostic imaging for indicating and deciding the operation.
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Affiliation(s)
- Alain Barth
- Department of Neurosurgery, University Hospital of Bern, Bern, Switzerland.
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Harjai KJ, Grines C. Contemporary management of carotid artery stenosis: no resting places, no plateaus. J Interv Cardiol 2006; 19:63-6. [PMID: 16483342 DOI: 10.1111/j.1540-8183.2006.00106.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Villalobos HJ, Harrigan MR, Lau T, Wehman JC, Hanel RA, Levy EI, Guterman LR, Hopkins LN. Advancements in Carotid Stenting Leading to Reductions in Perioperative Morbidity among Patients 80 Years and Older. Neurosurgery 2006; 58:233-40; discussion 233-40. [PMID: 16462476 DOI: 10.1227/01.neu.0000194832.96470.cd] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE Patients 80 years and older are generally considered to be at an increased risk for stroke and death from carotid endarterectomy. High-risk status often qualifies them for entry into a carotid angioplasty and stenting (CAS) trial. The aim of this study is to report periprocedure (0-30 d) morbidity and mortality among elderly patients undergoing CAS with and without distal embolic protection in an intention-to-treat analysis. METHODS A retrospective review was performed to evaluate the medical records and imaging studies of patients 80 years or older who underwent attempted CAS procedures with and without distal embolic protection between June 1996 and February 2004. RESULTS Ages of the 75 patients identified in our review ranged from 80 to 91 years (average 83.1 yr); 41 were men. Internal carotid artery stenosis ranged from 60 to 95% (mean 78.3%). Forty-two patients had symptoms (transient ischemic attack, 29; stroke, 13), and 33 patients were asymptomatic. Total event rates were major stroke, 4% (3 patients); minor stroke, 6.7% (5 patients); death, 4% (3 patients). Rates in the unprotected group (35 patients) were major stroke, 8.6% (3 patients); minor stroke, 5.7% (2 patients); major stroke/death, 14.3% (5 patients). Rates in the protected group (40 patients) were major stroke, 0; minor stroke, 7.5% (3 patients); major stroke/death, 0; (P < 0.05). CONCLUSION These results suggest that elderly patients undergoing CAS with adjunctive distal embolic protection are at a lower risk of periprocedure adverse events. Routine clopidogrel use, smaller hardware profile, patient selection, and increased experience likely contributed to these results.
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Affiliation(s)
- Hunaldo J Villalobos
- Department of Neurosurgery and Toshiba Stroke Research Center, School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo 14209, USA
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Masuo O, Terada T, Matsuda Y, Ogura M, Tsumoto T, Yamaga H, Itakura T. Successful Recanalization by In-Stent Percutaneous Transluminal Angioplasty With Distal Protection for Acute Carotid Stent Thrombosis-Case Report-. Neurol Med Chir (Tokyo) 2006; 46:495-9. [PMID: 17062989 DOI: 10.2176/nmc.46.495] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A 71-year-old male presented with severe left cervical internal carotid artery stenosis manifesting as repeated transient ischemic attacks consisting of right hemiparesis and motor aphasia. Carotid artery stenting (CAS) under distal protection was performed to prevent further ischemic events. This procedure was uneventful. However, the patient exhibited progressive right hemiparesis and motor aphasia 3 days after CAS. Emergent angiography revealed carotid artery occlusion due to in-stent thrombosis. In-stent percutaneous transluminal angioplasty (PTA) was performed under distal protection. The carotid artery was recanalized with small residual thrombus. The neurological deficits almost completely disappeared after PTA. Follow-up angiography 9 months after stenting showed restenosis but no in-stent thrombosis. Carotid thrombosis after CAS can be resolved by in-stent PTA under distal protection and subsequent treatment with antithrombotic agents.
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Affiliation(s)
- Osamu Masuo
- Department of Neurological Surgery, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Japan.
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