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Ishikawa T, Yamanouchi T, Kabeya R. A Case of Acute In-Stent Mobile Plaque after Carotid Artery Stenting Aspirated with a Distal Access Catheter. JOURNAL OF NEUROENDOVASCULAR THERAPY 2023; 17:107-113. [PMID: 37546543 PMCID: PMC10400897 DOI: 10.5797/jnet.cr.2023-0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 04/10/2023] [Indexed: 08/08/2023]
Abstract
Objective Carotid artery stenting (CAS) is common procedure for carotid stenosis, but sometimes acute in-stent thrombosis or plaque protrusion after CAS leads to postoperative stroke. There are few reports of aspiration of in-stent plaque protrusion. This paper reports a case of acute in-stent mobile plaque aspirated with a distal access catheter. Case Presentation A 74-year-old male underwent CAS for symptomatic internal carotid artery stenosis and postoperative course was thought to be good, but in-stent mobile plaque was detected by carotid duplex at postoperative day 6. As mobile plaque is a high risk for stroke, we performed plaque aspiration with a distal access catheter, without neurological deficit or a new cerebral lesion in magnetic resonance imaging. We present a case report, including a literature review, of acute thrombosis or in-stent plaque protrusion. Conclusion Aspiration removal may be effective for in-stent mobile plaque, which is expected to be fragile, avoiding the disadvantages of increasing stents.
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Affiliation(s)
- Takayuki Ishikawa
- Department of Neurosurgery, Ichinomiya Municipal Hospital, Ichinomiya, Aichi, Japan
| | - Takashi Yamanouchi
- Department of Neurosurgery, Ichinomiya Municipal Hospital, Ichinomiya, Aichi, Japan
| | - Ryusuke Kabeya
- Department of Neurosurgery, Ichinomiya Municipal Hospital, Ichinomiya, Aichi, Japan
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Yamaguchi Y, Takada T, Uchida K, Miyata K, Kurisu K, Okuyama T, Tomeoka F, Ajiki M, Hokari M, Asaoka K. Carotid Artery Stenting Using Stent-in-Stent Technique with a Closed-Cell Stent and a Dual-Layer Micromesh Stent: A Case Report. JOURNAL OF NEUROENDOVASCULAR THERAPY 2023; 17:101-106. [PMID: 37546544 PMCID: PMC10400896 DOI: 10.5797/jnet.cr.2023-0003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 03/31/2023] [Indexed: 08/08/2023]
Abstract
Objective Recent studies evaluating plaque protrusion at carotid artery stenting (CAS) using optical coherence tomography showed not a few cases of plaque protrusion when using double-layer micromesh stents. We report a case of symptomatic internal carotid artery (ICA) stenosis with at-risk unstable plaques in which CAS was successfully performed using a stent-in-stent technique by the combined use of a closed-cell stent and a dual-layer micromesh stent. Case Presentation An 87-year-old Japanese man with dysarthria and right hemiparesis was diagnosed with atheromatous cerebral embolism caused by severe left ICA stenosis on MRI and DSA. MRI with T1-weighted black blood methods showed high intensities in the plaques of the left ICA, suggesting unstable plaque characteristics with intraplaque hemorrhage components. On day 20, CAS was performed. After the pre-stent dilation under proximal and distal protection, a Carotid WALLSTENT was placed to cover the stenotic lesion. Then, a CASPER Rx was placed from the proximal left ICA to the common carotid artery to cover the Carotid WALLSTENT. Although visible plaque debris was recognized in the aspirated blood, the debris became invisible after aspiration of 1300 mL. Postoperative angiography showed enough dilation of the left ICA, with no plaque protrusion or acute stent thrombosis. The patient had an uneventful postoperative course and was discharged without any neurological sequelae. Conclusion The present case suggests that the combined stent-in-stent technique using a closed-cell stent and a micromesh stent can be considered as one of the treatment strategies for preventing plaque protrusion and procedural ischemic complications in patients with high-risk carotid plaques.
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Affiliation(s)
- Yoshitaka Yamaguchi
- Department of Cerebrovascular Medicine, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Tatsuro Takada
- Department of Cerebrovascular Medicine, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Kazuki Uchida
- Department of Neurosurgery, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Kei Miyata
- Department of Neurosurgery, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Kota Kurisu
- Department of Neurosurgery, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Tomohiro Okuyama
- Department of Neurosurgery, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Fumiki Tomeoka
- Department of Cerebrovascular Medicine, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Minoru Ajiki
- Department of Cerebrovascular Medicine, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Masaaki Hokari
- Department of Neurosurgery, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
| | - Katsuyuki Asaoka
- Department of Neurosurgery, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
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Kiyosawa R, Saito T, Yamada S, Harada K. Efficacy of Post-Dilatation during Carotid Artery Stenting for Unstable Plaque Using a Double-Layer Stent Evaluated by OFDI. JOURNAL OF NEUROENDOVASCULAR THERAPY 2022; 16:395-401. [PMID: 37502638 PMCID: PMC10370631 DOI: 10.5797/jnet.oa.2022-0003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 02/22/2022] [Indexed: 07/29/2023]
Abstract
Objective This study aimed to use optical frequency domain imaging (OFDI) to evaluate the efficacy of post-dilatation (PD) after stent placement for unstable plaques during carotid artery stenting (CAS) using a double-layer stent. Methods Twelve unstable carotid plaque lesions diagnosed by MRI were evaluated using OFDI during CAS. The pre-procedural minimum lumen diameter was 1.6 ± 0.7 mm. Each lesion was pre-dilated with balloon catheters (diameter, 5.3 ± 0.5 mm), and a double-layer stent was deployed. PD was performed with balloon catheters of the same size as those used for pre-dilatation. Cross-sectional OFDI images within the stented segment were evaluated at 1-mm intervals for a 20-mm segment, including the most stenotic lesion. Slice rates for the presence of in-stent plaque protrusion (PP) and plaque between the double-layer lumen were calculated. Results No procedural complications occurred with the use of an embolic protection device. Compared to after stent placement, slice rates for any PP (44 ± 19% to 62 ± 22%, P <0.05) and plaque between the double-layer lumen (79 ± 16% to 91 ± 34%, P <0.05) were significantly increased after PD; slice rates for >500 μm PP (7.5 ± 14% to 0%, P <0.05) were significantly decreased. Visible debris were captured in 50% of lesions. Conclusion PD after double-layer carotid stent placement decreases in-stent large PP. Double-layer construction contributed to the prevention of large PP, as the PP may have been crushed into debris by PD.
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Affiliation(s)
- Ryuichiro Kiyosawa
- Department of Neurosurgery, Fukuoka Wajiro Hospital, Fukuoka, Fukuoka, Japan
| | - Takaya Saito
- Department of Neurosurgery, Fukuoka Wajiro Hospital, Fukuoka, Fukuoka, Japan
| | - Shingo Yamada
- Department of Neurosurgery, Fukuoka Wajiro Hospital, Fukuoka, Fukuoka, Japan
| | - Kei Harada
- Department of Neurosurgery, Fukuoka Wajiro Hospital, Fukuoka, Fukuoka, Japan
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Osipova OS, Bugurov SV, Saaya SB, Cheban AV, Gostev AA, Rabtsun AA, Ignatenko PV, Karpenko AA. Relationship of pharmacotherapy and the incidence of embolic complications of carotid reconstructive surgery. КАРДИОВАСКУЛЯРНАЯ ТЕРАПИЯ И ПРОФИЛАКТИКА 2022. [DOI: 10.15829/1728-8800-2022-3085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Aim. To evaluate the relationship between lipid-lowering and antiplatelet therapy and the incidence of cerebral microembolism and related complications in open and endovascular revascularization of the carotid arteries (CA).Material and methods. This single-center study involved patients with internal CA stenosis. The patients were divided into 2 groups depending on the surgery type performed: carotid endarterectomy (CEA) — 163 patients; CA stenting (CAS) — 71 patients. All patients underwent intraoperative transcranial Doppler monitoring to register cerebral embolism during CAS and CE.Results. In CAS, microembolism episodes were observed in 66,2% vs 22,1% of patients in the CEA group (p=0,04), the largest number of which was recorded during catheterization of the internal CA and embolic filter installation (p=0,000). There were no significant differences between the groups in terms of the stroke incidence. In 8 patients in the CAS group and 1 patient in the CEA group, a transient ischemic attack was observed within 30 days after surgery (p=4x10-4 ). Intraoperative embolism was a predictor of a neurological event in the early postoperative period (odds ratio (OR), 33,08; 95% confidence interval (CI): 3,49-56,37 (p6 months before surgery reduces the likelihood of embolism by 4 times (OR 0,25; 95% CI: 0,11-0,58 (p=0,001), while lipid-lowering and antiplatelet therapy combination — by 12,5 times (OR, 0,08; 95% CI: 0,01-0,40 (p=0,001)).Conclusion. Preoperative antiplatelet and statin therapy reduces the likelihood of embolism during the CA revascularization procedure.
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Assessing the Suitability of the Carotid Bifurcation for Stenting: Anatomic and Morphologic Considerations. J Vasc Surg 2021; 74:2087-2095. [PMID: 34175382 DOI: 10.1016/j.jvs.2021.05.048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 05/04/2021] [Indexed: 11/21/2022]
Abstract
OBJECTIVE Over the years where stents have been used to treat carotid lesions, a great deal has been learned about which anatomical characteristics lead to adverse outcomes. This review summarizes the anatomic and morphologic characteristics of the carotid vasculature that can help guide patient selection and clinical decision-making. METHODS Each of the carotid artery anatomy and lesion characteristics that are relevant to carotid stenting are described in detail. These are accompanied with evidence-based outcomes and results. RESULTS Data on the prevalence of carotid artery lesions that are unsuitable for stenting are summarized and the implications of these data for practice are discussed, especially as they pertain to transcarotid artery revascularization. CONCLUSIONS CAS can be viable option for carotid revascularization, but the lesion must be acceptable and safe for stent placement. There should be thorough assessment to rule out the presence of severe tortuosity, long-segment disease, severe calcification (circumferential or exophytic), mobile-plaque, swollen ICA sign, and carotid diameters outside the acceptable range. In carefully chosen lesions with the absence of the unfavorable characteristics described-TCAR may offer improved periprocedural success, and CAS may attain better long-term durability.
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Horev A, Zlotnik Y, Borodetsky V, Biederko R, Star M, Zvenigorodsky V, Shelef I, Ifergane G. Adjunctive treatment with low dose intra-arterial eptifibatide and intravenous aspirin during carotid stenting: A case series. J Clin Neurosci 2020; 84:29-32. [PMID: 33485594 DOI: 10.1016/j.jocn.2020.11.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 11/03/2020] [Accepted: 11/27/2020] [Indexed: 11/26/2022]
Abstract
PURPOSE According to most guidelines, medical protocol for carotid stenting includes the administration of oral Aspirin and Clopidogrel at least four days before the procedure, with intraprocedural intravenous (IV) heparin. Some publications have also reported the safety of adding glycoprotein 2b/3a inhibitors to the protocol. In this retrospective study, we evaluate the safety of a new medication protocol that includes IV aspirin and intra-arterial Eptifibatide (glycoprotein 2b/3a inhibitor) during carotid stenting. All patients who underwent carotid stenting at Soroka University Medical Center between January 2015 and May 2020 were included (emergent cases were excluded). We divided patients into two groups-patients treated under the standard protocol, and patients treated under the new protocol. In the latter, patients received both the standard protocol regimen, as well as 150 mg IV aspirin immediately before stenting, and a slow intra-arterial injection of 2-3 mg Eptifibatide (glycoprotein 2b/3a antagonist) immediately after stenting. Forty-four patients were treated according to the standard protocol (group 1), and 41 patients were treated according to the new protocol (group 2). In group 1, six patients had complications, while in group 2, no complications of any kind were noted (p = 0.027). The safety and possible efficacy of this novel protocol was preliminarily demonstrated in the present study. Future studies are needed to prove the safety and efficacy of a specific drug regimen that will further reduce the complication rates of carotid stenting.
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Affiliation(s)
- Anat Horev
- Neurology Department, Soroka University Medical Center, Beer-Sheva, Israel.
| | - Yair Zlotnik
- Neurology Department, Soroka University Medical Center, Beer-Sheva, Israel
| | | | - Ron Biederko
- Research Institute, Soroka University Medical Center, Beer-Sheva, Israel
| | - Michael Star
- Neurology Department, Soroka University Medical Center, Beer-Sheva, Israel
| | | | - Ilan Shelef
- Radiology Institute, Soroka University Medical Center, Beer-Sheva, Israel
| | - Gal Ifergane
- Neurology Department, Soroka University Medical Center, Beer-Sheva, Israel
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Preoperative Magnetic Resonance Imaging (MRI) for Predicting Thromboembolic Complications during Endovascular Treatment for Iliac Artery Occlusions. Ann Vasc Surg 2020; 73:211-221. [PMID: 33253808 DOI: 10.1016/j.avsg.2020.10.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/02/2020] [Accepted: 10/18/2020] [Indexed: 11/24/2022]
Abstract
BACKGROUND Preoperative prediction of thromboembolic complications using magnetic resonance imaging (MRI) in coronary arteries and carotid arteries has been established. However, the technique has not been applied in peripheral arteries. This study aimed to assess the relationship between thromboembolic complications during endovascular treatment (EVT) for iliac artery occlusion and signal intensity on MRI. METHODS This single-institution study included 52 iliac artery occlusions in 51 patients (mean age, 70.4 years) who underwent successful EVT between January 2010 and March 2018. MRI using an inversion recovery-prepared, steady-state free precession technique was performed preoperatively. Thromboembolic complications were defined as distal embolization and in-stent protrusion greater than 25% of the stent cross-sectional area confirmed by angiography and intravascular ultrasonography, regardless of symptoms. The highest signal intensity of iliac artery occlusion divided by the signal intensity of adjacent iliopsoas muscle (target-to-muscle ratio, TMR) was measured on MR images. Multivariate analysis was performed to clarify the predictors of thromboembolic complications during EVT. RESULTS Thromboembolic complications observed in 11 vessels (21.2%) from 11 patients comprised distal embolization (n = 4) and in-stent protrusion (n = 7). A TMR cutoff value > 2.57 had a sensitivity of 90.9%, specificity of 78.0%, positive predictive value of 52.6%, and negative predictive value of 97.0% for detecting thromboembolic complications during EVT. In the multivariate analysis, TMR >2.57 was the only independent factor associated with thromboembolic complications (odds ratio, 30.10; 95% confidence interval, 3.26-278.00; P = 0.003). CONCLUSIONS The presence of higher signal intensity in iliac artery occlusion on MRI is useful for predicting thromboembolic complications during EVT.
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Osipova O, Popova I, Starodubtsev V, Bugurov S, Karpenko A. Is it possible to prevent cerebral embolization by improving the design and technology of carotid stent implantation? Expert Rev Cardiovasc Ther 2020; 18:891-904. [PMID: 33021842 DOI: 10.1080/14779072.2020.1833718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
INTRODUCTION The prevention of atherosclerotic plaque fragmentation during carotid artery stenting is a fundamental problem in decreasing the risk of disability of patients. The goal of this review is to clarify whether the stent design can have a decisive impact on the rate of intraoperative and postoperative complications. AREAS COVERED Different designs of the carotid stents are briefed and the advantages and disadvantages of different stent designs are discussed as well as the results of their clinical use. Various solutions are presented to reduce cerebral embolism during carotid artery stenting. EXPERT OPINION There is no conclusive evidence for the benefits of closed cell and hybrid stents. The stent design cannot completely resolve the problem of cerebral embolism. Most of the events of cerebral microembolism occur at the stages of stent delivery rather than protrusion of an atherosclerotic plaque in the long-term follow-up. Most likely, minimization of the risks for periprocedural and postprocedural strokes requires not only the new solutions in stent design as well as the corresponding delivery systems and brain embolic protection systems, but also the new strategies of preprocedural drug stabilization of the atherosclerotic plaque in the carotid artery. Abbreviations: CAS, carotid artery stenting; CE, carotid endarterectomy; DW-MRI, diffusion-weighted magnetic resonance imaging; ECA, external carotid artery; ICA, internal carotid artery; IVUS, intravascular ultrasound examination; OCT, optical coherence tomography.
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Affiliation(s)
- Olesia Osipova
- Center for Vascular and Hybrid Surgery, Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation , Novosibirsk, Russian Federation
| | - Irina Popova
- Center for Vascular and Hybrid Surgery, Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation , Novosibirsk, Russian Federation
| | - Vladimir Starodubtsev
- Center for Vascular and Hybrid Surgery, Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation , Novosibirsk, Russian Federation
| | - Savr Bugurov
- Center for Vascular and Hybrid Surgery, Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation , Novosibirsk, Russian Federation
| | - Andrey Karpenko
- Center for Vascular and Hybrid Surgery, Meshalkin National Medical Research Center, Ministry of Health of the Russian Federation , Novosibirsk, Russian Federation
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Imamura H, Sakai N, Matsumoto Y, Yamagami H, Terada T, Fujinaka T, Yoshimura S, Sugiu K, Ishii A, Matsumaru Y, Izumi T, Oishi H, Higashi T, Iihara K, Kuwayama N, Ito Y, Nakamura M, Hyodo A, Ogasawara K. Clinical trial of carotid artery stenting using dual-layer CASPER stent for carotid endarterectomy in patients at high and normal risk in the Japanese population. J Neurointerv Surg 2020; 13:524-529. [PMID: 32934139 PMCID: PMC8142440 DOI: 10.1136/neurintsurg-2020-016250] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 08/27/2020] [Accepted: 08/30/2020] [Indexed: 02/03/2023]
Abstract
BACKGROUND The dual-layer nitinol CASPER stent was designed to prevent plaque prolapse into its strut and periprocedural stroke. OBJECTIVE To conduct a clinical trial for government approval of the device in patients at either high or normal risk for carotid endarterectomy (CEA). METHODS Eligible patients had ≥50% symptomatic stenosis or ≥80% asymptomatic stenosis according to the North American Symptomatic Carotid Endarterectomy Trial methods (peak systolic velocity 130 and 230 cm/s on ultrasonography, respectively). The primary endpoint was the lack of major adverse events (MAEs), defined as death, stroke, and myocardial infarction within 30 days, and ipsilateral stroke within 1 year. The performance goal was set at 90.5%. MAE rates were also compared between the CEA high- and normal-risk groups. RESULTS 140 carotid artery stenting procedures, including 40% of patients at high risk and 60% at normal risk for CEA, were performed in 13 institutes. MAEs occurred in two cases (one intraprocedural and one postprocedural stroke), and the MAE rate was 1.4%. The non-MAE rate was 98.6% according to Kaplan-Meier analysis, which was superior to the previously set performance goal. The deployment success, target lesion revascularization (TLR), in-stent restenosis, and cerebrovascular event rates were 99.3%, 2.4%, 8.5%, and 7.2%, respectively. The MAE rate in patients with normal CEA risk was 1.2%, which was similar to the high-risk CEA group, with no significant difference due to the small number of MAEs. CONCLUSIONS The MAE rate following use of the CASPER stent was low (1.4%). The MAE, deployment success, TLR, in-stenosis, and cerebrovascular event rates were similar to those of previous reports.
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Affiliation(s)
- Hirotoshi Imamura
- Department of Neurosurgery, Kobe City Medical Center General Hospital, Kobe, Japan
| | - Nobuyuki Sakai
- Department of Neurosurgery, Kobe City Medical Center General Hospital, Kobe, Japan
| | - Yasushi Matsumoto
- Department of Neuroendovascular Therapy, Kohnan Hospital, Sendai, Japan
| | - Hiroshi Yamagami
- Division of Stroke Care Unit, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Tomoaki Terada
- Department of Neurosurgery, Showa University Fujigaoka Hospital, Yokohama, Japan
| | - Toshiyuki Fujinaka
- Department of Neurosurgery, National Hospital Organization Osaka National Hospital, Osaka, Japan
| | - Shinichi Yoshimura
- Department of Neurosurgery, Hyogo College of Medicine, Nishinomiya, Japan
| | - Kenji Sugiu
- Department of Neurosurgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Akira Ishii
- Department of Neurosugery, Kyoto University, Kyoto, Japan
| | - Yuji Matsumaru
- Division of Stroke prevention and treatment, Department of Neurosurgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Takashi Izumi
- Department of Neurosurgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hidenori Oishi
- Department of Neurosurgery, Juntendo University, Faculty of Medicine, Tokyo, Japan
| | - Toshio Higashi
- Department of Neurosurgery, Fukuoka University School of Medicine, Fukuoka, Japan
| | - Koji Iihara
- Department of Neurosurgery, Kyushu University, Graduate School of Medical Sciences, Fukuoka, Japan
| | - Naoya Kuwayama
- Department of Neurosurgery, University of Toyama, Toyama, Japan
| | - Yasushi Ito
- Department of Neurosurgery, Shinrakuen Hospital, Niigata, Japan
| | | | - Akio Hyodo
- Department of Neurosurgery, Dokkyo Medical University Koshigaya Hospital, Koshigaya, Japan
| | - Kuniaki Ogasawara
- Department of Neurosurgery, Iwate Medical University, Morioka, Japan
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Hosoo H, Tsuruta W, Hamada Y, Katsumata M, Ishigami D, Ishikawa E, Matsumaru Y, Matsumura A. Retrograde three-dimensional rotational angiography: A novel method for the detection of plaque protrusion during carotid artery stenting under continuous distal balloon protection. Interv Neuroradiol 2020; 26:316-320. [PMID: 31979997 DOI: 10.1177/1591019919900821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND To prevent ischemic complications during carotid artery stenting, accurate detection of plaque protrusion and appropriate additional treatment are essential. Here, we introduce a novel method for the detection of plaque protrusion under distal balloon protection using three-dimensional rotation angiography-"retrograde 3DRA." We evaluated the safety and efficacy of this method. MATERIALS AND METHODS We retrospectively analyzed 28 consecutive carotid artery stenting procedures under distal balloon protection at our hospital between July 2017 and August 2019. The first line of protection was dual balloon protection (proximal and distal balloon). After stent deployment, balloon dilatation, and subsequent blood aspiration, 3DRA was performed with the injection of diluted contrast medium from the aspiration catheter positioned just proximal to the distal protection balloon. The stent lumen was analyzed by obtaining the reconstruction maximum intensity projection image. RESULTS Among the 28 cases, all cases could be assessed for in-stent plaque protrusion using "retrograde 3DRA." We were able to evaluate the stent lumen clearly. There were three cases (10.7%) in which plaque protrusion could be confirmed. Since additional balloon dilatation was performed for all protrusion cases under continuing balloon protection, no ischemic complications occurred. CONCLUSION Retrograde 3DRA could be safe and useful for the detection of plaque protrusions and to avoid ischemic complication for tolerable cases of internal carotid artery transient balloon protection.
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Affiliation(s)
- Hisayuki Hosoo
- Department of Endovascular Neurosurgery, Toranomon Hospital, Tokyo, Japan
| | - Wataro Tsuruta
- Department of Endovascular Neurosurgery, Toranomon Hospital, Tokyo, Japan
| | - Yusuke Hamada
- Department of Radiological Technology, Toranomon Hospital, Tokyo, Japan
| | - Masahiro Katsumata
- Department of Endovascular Neurosurgery, Toranomon Hospital, Tokyo, Japan
| | - Daiichiro Ishigami
- Department of Endovascular Neurosurgery, Toranomon Hospital, Tokyo, Japan
| | - Eiichi Ishikawa
- Department of Neurosurgery, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Yuji Matsumaru
- Division of Stroke Prevention and Treatment, Department of Neurosurgery, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Akira Matsumura
- Department of Neurosurgery, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
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Harada K, Kajihara M, Sankoda Y, Taniguchi S. Efficacy of post-dilatation during carotid artery stenting for unstable plaque using closed-cell design stent evaluated by optical coherence tomography. J Neuroradiol 2019; 46:384-389. [PMID: 30954551 DOI: 10.1016/j.neurad.2019.03.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 12/18/2018] [Accepted: 03/02/2019] [Indexed: 10/27/2022]
Abstract
BACKGROUND AND PURPOSE This study aimed to use optical coherence tomography (OCT) to evaluate the efficacy of post-dilatation (PD) after stent placement for unstable plaques during carotid artery stenting (CAS) using closed-cell design stent. MATERIALS AND METHODS Twelve unstable carotid plaque lesions diagnosed by magnetic resonance imaging were evaluated by OCT during CAS. Pre-procedural minimum lumen diameter and area were 1.5 ± 0.6 mm and 2.6 ± 1.6 mm2, respectively. The lesion was pre-dilated with balloon catheters (diameter 4.8 ± 0.3 mm), and closed-cell stent was deployed. PD was performed with balloon catheters of the same size as those used for pre-dilatation. Minimum lumen diameter/area and in-stent tissue prolapse volume after stent placement and after PD were calculated by 2-dimensional cross section images. The number of the stent cells showing tissue prolapse and malapposition after stent-placement and after PD were calculated by 3-dimensional analysis. RESULTS Compared to after stent placement, in-stent tissue prolapse volume (0.18 ± 0.10 to 0.22 ± 0.07 mm2/slice, P < 0.01), number of stent cells with any tissue prolapse (12.7 ± 8.2 to 21.0 ± 11.8%, P < 0.001) were significantly increased after PD; stent cells with ≥ 500-µm tissue prolapse (1.6 ± 1.1 to 0.7 ± 0.8%, P < 0.01) and stent malapposition (17.4 ± 7.2 to 14.0 ± 6.3%, P < 0.01) were significantly decreased. CONCLUSIONS PD after carotid stent placement caused increase in in-stent tissue prolapse volume and small tissue prolapse, however, the in-stent large tissue prolapse decreased, as the in-stent tissue prolapse may have been crushed into debris.
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Affiliation(s)
- Kei Harada
- Department of Neurosurgery, Fukuoka Wajiro Hospital, 2-2-75, Wajirogaoka, Higashi-Ku, Fukuoka-city, 811-0213 Fukuoka, Japan.
| | - Masahito Kajihara
- Department of Neurosurgery, Fukuoka Wajiro Hospital, 2-2-75, Wajirogaoka, Higashi-Ku, Fukuoka-city, 811-0213 Fukuoka, Japan
| | - Yukihiro Sankoda
- Department of Neurosurgery, Fukuoka Wajiro Hospital, 2-2-75, Wajirogaoka, Higashi-Ku, Fukuoka-city, 811-0213 Fukuoka, Japan
| | - Syunsuke Taniguchi
- Department of Neurosurgery, Fukuoka Wajiro Hospital, 2-2-75, Wajirogaoka, Higashi-Ku, Fukuoka-city, 811-0213 Fukuoka, Japan
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