1
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Chen H, Xing Y, Lang Z, Zhang L, Liao M, He X. Comparison of anesthesia methods for intra-arterial therapy of patients with acute ischemic stroke: an updated meta-analysis and systematic review. BMC Anesthesiol 2024; 24:243. [PMID: 39026147 PMCID: PMC11256490 DOI: 10.1186/s12871-024-02633-3] [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: 04/30/2024] [Accepted: 07/11/2024] [Indexed: 07/20/2024] Open
Abstract
OBJECTIVES Currently, there remains debate regarding the optimal anesthesia approach for patients undergoing intra-arterial therapy for acute ischemic stroke. Therefore, we conducted a comparative analysis to assess the effects of general anesthesia versus non general anesthesia on patient outcomes. METHODS The research methodology entailed comprehensive searches of prominent databases such as the Cochrane Library, PubMed, Scopus, and Web of Science, covering the period from January 1, 2010, to March 1, 2024. Data synthesis employed techniques like risk ratio or standardized mean difference, along with 95% confidence intervals. The study protocol was prospectively registered with PROSPERO (CRD42024523079). RESULTS A total of 27 trials and 12,875 patients were included in this study. The findings indicated that opting for non-general anesthesia significantly decreased the risk of in-hospital mortality (RR, 1.98; 95% CI: 1.50 to 2.61; p<0.00001; I2 = 20%), as well as mortality within three months post-procedure (RR, 1.24; 95% CI: 1.15 to 1.34; p<0.00001; I2 = 26%), while also leading to a shorter hospitalization duration (SMD, 0.24; 95% CI: 0.15 to 0.33; p<0.00001; I2 = 44%). CONCLUSION Ischemic stroke patients who undergo intra-arterial treatment without general anesthesia have a lower risk of postoperative adverse events and less short-term neurological damage. In routine and non-emergency situations, non-general anesthetic options may be more suitable for intra-arterial treatment, offering greater benefits to patients. In addition to this, the neuroprotective effects of anesthetic drugs should be considered more preoperatively and postoperatively.
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Affiliation(s)
- Huijun Chen
- Dingxi People's Hospital, Dingxi, Gansu, 743000, China
| | - Yang Xing
- The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu, 730000, China
- Department of Anesthesia and Surgery, First Hospital of Lanzhou University, Lanzhou, Gansu, 730000, China
| | - Zekun Lang
- The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu, 730000, China
| | - Lei Zhang
- The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu, 730000, China
| | - Mao Liao
- The Second Clinical Medical College of Lanzhou University, Lanzhou, Gansu, 730000, China
| | - Ximin He
- Dingxi People's Hospital, Dingxi, Gansu, 743000, China.
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2
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Fu W, Yu X, Lai M, Li Y, Yang Y, Qin Y, Yu M, Wang F, Wang C. Gamma oscillations induced by 40-Hz visual-auditory stimulation for the treatment of acute-phase limb motor rehabilitation after stroke: study protocol for a prospective randomized controlled trial. Trials 2024; 25:284. [PMID: 38671516 PMCID: PMC11046895 DOI: 10.1186/s13063-024-08121-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
BACKGROUND The incidence of hemiparetic limb dysfunction reaches 85% in stroke patients, emerging as a critical factor influencing their daily lives. However, the effectiveness of current rehabilitation treatments is considerably limited, particularly in patients with upper extremity impairment. This study aims to conduct a prospective clinical trial to validate the safety and effectiveness of gamma oscillations induced by 40-Hz visual-auditory stimulation in treating post-stroke upper limb dysfunction and to explore the relevant mechanisms. METHODS This trial is a prospective, randomized controlled, double-blind study. All enrolled patients were randomly assigned to two groups. The experimental group received intervention through 40-Hz visual-auditory stimulation, while the control group underwent intervention with randomly matched visual-auditory stimulation frequencies. The primary efficacy endpoint is the change in motor function. Secondary efficacy endpoints include motor-evoked potentials, cerebral hemodynamic changes, neural network connectivity, and alterations in synaptic-related genes. Safety evaluation included major adverse events, all-cause mortality, and photosensitive epilepsy. Assessments will be conducted at baseline, after a 14-day treatment period, and during subsequent follow-up visits (at 3 and 6 months) post-treatment. The differences between the two groups will be compared. DISCUSSION This study will evaluate the safety and efficacy of gamma oscillations induced by 40-Hz visual-auditory stimulation in treating patients with upper extremity dysfunction after an acute cerebral stroke. Concurrently, we will explore potential mechanisms, including changes in synaptic-related genes and neural network connectivity. This trial is expected to provide evidence for the effectiveness of this new technique in treating upper extremity dysfunction after a stroke and improving patients' quality of life. TRIAL REGISTRATION The study protocol has been registered with the Chinese Clinical Trial Registry (ChiCTR) under registration number ChiCTR2300076579 on October 12, 2023.
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Affiliation(s)
- Wang Fu
- Department of Neurology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Datong Rd. 358, Shanghai, 200137, China
| | - Xiaoming Yu
- Department of Rehabilitation, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, 200137, China
| | - Minghui Lai
- Department of Rehabilitation, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, 200137, China
| | - Yuanli Li
- Department of Rehabilitation, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, 200137, China
- Engineering Research Center of Traditional Chinese Medicine Intelligent Rehabilitation, Ministry of Education, Shanghai, 201203, China
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Yingting Yang
- Department of Neurology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Datong Rd. 358, Shanghai, 200137, China
| | - Yong Qin
- Department of Neurology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Datong Rd. 358, Shanghai, 200137, China
| | - Min Yu
- Department of Neurology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Datong Rd. 358, Shanghai, 200137, China
| | - Feng Wang
- Department of Neurology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Datong Rd. 358, Shanghai, 200137, China
| | - Cong Wang
- Department of Neurology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Datong Rd. 358, Shanghai, 200137, China.
- Engineering Research Center of Traditional Chinese Medicine Intelligent Rehabilitation, Ministry of Education, Shanghai, 201203, China.
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
- Queensland Brain Institute, the University of Queensland, Brisbane, 4072, Australia.
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3
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Saceleanu VM, Toader C, Ples H, Covache-Busuioc RA, Costin HP, Bratu BG, Dumitrascu DI, Bordeianu A, Corlatescu AD, Ciurea AV. Integrative Approaches in Acute Ischemic Stroke: From Symptom Recognition to Future Innovations. Biomedicines 2023; 11:2617. [PMID: 37892991 PMCID: PMC10604797 DOI: 10.3390/biomedicines11102617] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 09/21/2023] [Accepted: 09/21/2023] [Indexed: 10/29/2023] Open
Abstract
Among the high prevalence of cerebrovascular diseases nowadays, acute ischemic stroke stands out, representing a significant worldwide health issue with important socio-economic implications. Prompt diagnosis and intervention are important milestones for the management of this multifaceted pathology, making understanding the various stroke-onset symptoms crucial. A key role in acute ischemic stroke management is emphasizing the essential role of a multi-disciplinary team, therefore, increasing the efficiency of recognition and treatment. Neuroimaging and neuroradiology have evolved dramatically over the years, with multiple approaches that provide a higher understanding of the morphological aspects as well as timely recognition of cerebral artery occlusions for effective therapy planning. Regarding the treatment matter, the pharmacological approach, particularly fibrinolytic therapy, has its merits and challenges. Endovascular thrombectomy, a game-changer in stroke management, has witnessed significant advances, with technologies like stent retrievers and aspiration catheters playing pivotal roles. For select patients, combining pharmacological and endovascular strategies offers evidence-backed benefits. The aim of our comprehensive study on acute ischemic stroke is to efficiently compare the current therapies, recognize novel possibilities from the literature, and describe the state of the art in the interdisciplinary approach to acute ischemic stroke. As we aspire for holistic patient management, the emphasis is not just on medical intervention but also on physical therapy, mental health, and community engagement. The future holds promising innovations, with artificial intelligence poised to reshape stroke diagnostics and treatments. Bridging the gap between groundbreaking research and clinical practice remains a challenge, urging continuous collaboration and research.
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Affiliation(s)
- Vicentiu Mircea Saceleanu
- Neurosurgery Department, Sibiu County Emergency Hospital, 550245 Sibiu, Romania;
- Neurosurgery Department, “Lucian Blaga” University of Medicine, 550024 Sibiu, Romania
| | - Corneliu Toader
- Department of Neurosurgery, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (R.-A.C.-B.); (H.P.C.); (B.-G.B.); (D.-I.D.); (A.B.); (A.D.C.); (A.V.C.)
- Department of Vascular Neurosurgery, National Institute of Neurology and Neurovascular Diseases, 020022 Bucharest, Romania
| | - Horia Ples
- Centre for Cognitive Research in Neuropsychiatric Pathology (NeuroPsy-Cog), “Victor Babes” University of Medicine and Pharmacy, 300736 Timisoara, Romania
- Department of Neurosurgery, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Razvan-Adrian Covache-Busuioc
- Department of Neurosurgery, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (R.-A.C.-B.); (H.P.C.); (B.-G.B.); (D.-I.D.); (A.B.); (A.D.C.); (A.V.C.)
| | - Horia Petre Costin
- Department of Neurosurgery, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (R.-A.C.-B.); (H.P.C.); (B.-G.B.); (D.-I.D.); (A.B.); (A.D.C.); (A.V.C.)
| | - Bogdan-Gabriel Bratu
- Department of Neurosurgery, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (R.-A.C.-B.); (H.P.C.); (B.-G.B.); (D.-I.D.); (A.B.); (A.D.C.); (A.V.C.)
| | - David-Ioan Dumitrascu
- Department of Neurosurgery, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (R.-A.C.-B.); (H.P.C.); (B.-G.B.); (D.-I.D.); (A.B.); (A.D.C.); (A.V.C.)
| | - Andrei Bordeianu
- Department of Neurosurgery, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (R.-A.C.-B.); (H.P.C.); (B.-G.B.); (D.-I.D.); (A.B.); (A.D.C.); (A.V.C.)
| | - Antonio Daniel Corlatescu
- Department of Neurosurgery, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (R.-A.C.-B.); (H.P.C.); (B.-G.B.); (D.-I.D.); (A.B.); (A.D.C.); (A.V.C.)
| | - Alexandru Vlad Ciurea
- Department of Neurosurgery, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (R.-A.C.-B.); (H.P.C.); (B.-G.B.); (D.-I.D.); (A.B.); (A.D.C.); (A.V.C.)
- Neurosurgery Department, Sanador Clinical Hospital, 010991 Bucharest, Romania
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4
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Guo S, Jin T, Xu C, Huang W, Shi Z, Geng Y. Rescue stenting after the failure of mechanical thrombectomy to treat acute intracranial atherosclerotic occlusion. Front Neurol 2023; 13:1001496. [PMID: 36703624 PMCID: PMC9873241 DOI: 10.3389/fneur.2022.1001496] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 12/20/2022] [Indexed: 01/11/2023] Open
Abstract
Background Acute ischemic stroke (AIS) with intracranial large vessel occlusion (LVO) is refractory to reperfusion because of the underlying intracranial atherosclerosis (ICAS), and this condition often requires salvage methods such as balloon angioplasty and rescue stenting (RS). In this study, we investigated the short-term outcomes of RS after failed mechanical thrombectomy (MT) for the treatment of acute intracranial atherosclerotic occlusion. Methods We retrospectively evaluated the clinical data of 127 patients who underwent MT for acute intracranial atherosclerotic occlusion in our hospital between August 2018 and January 2022. The degree of recanalization was evaluated immediately after the treatment by Modified Thrombolysis in Cerebral Infarction (mTICI). The modified Rankin Scale (mRS) was used 90 days after treatment to evaluate the neurological functions. In addition, the incidence of symptomatic intracranial hemorrhage (sICH) and postoperative mortality within 90 days of treatment were calculated. Results Among the 127 patients, 86 patients (67.7%) had revascularization (mTICI 2b-3) immediately after MT (non-RS group), and RS was performed in 41 patients (32.3%) after MT failure (RS group). No difference in the sICH rate was observed between the two groups (17.1 vs. 16.3%, p = 0.91). There was a slightly higher mortality rate in the RS group (14.6 vs. 12.8%, p = 0.71); however, the difference was not significant. There was no difference in the proportion of patients in the RS and non-RS groups who had a 90-day mRS score of 0-2 (48.8 vs. 52.3%, p = 0.76). Conclusions Rescue stenting after MT failure might be a feasible rescue modality for treating acute intracranial atherosclerotic occlusion.
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Affiliation(s)
- Shunyuan Guo
- Department of Clinical Medicine, Medical College of Soochow University, Suzhou, Jiangsu, China,Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Tianyu Jin
- Department of Neurology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Chao Xu
- Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Wei Huang
- Rheumatism and Immunity Research Institute, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Zongjie Shi
- Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Yu Geng
- Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China,*Correspondence: Yu Geng ✉
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5
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Zhao H, Wang M, Huang X, Wu X, Xiao H, Jin F, Lv J, Cheng J, Zhao Y, Zhang C. Wasp venom from Vespa magnifica acts as a neuroprotective agent to alleviate neuronal damage after stroke in rats. PHARMACEUTICAL BIOLOGY 2022; 60:334-346. [PMID: 35171059 PMCID: PMC8863380 DOI: 10.1080/13880209.2022.2032207] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 11/24/2021] [Accepted: 01/17/2022] [Indexed: 06/14/2023]
Abstract
CONTEXT Acute ischaemic stroke (AIS) is a major cause of disability and death, which is a serious threat to human health and life. Wasp venom extracted from Vespa magnifica Smith (Vespidae) could treat major neurological disorders. OBJECTIVE This study investigated the effects of wasp venom on AIS in rats. MATERIAL AND METHODS We used a transient middle cerebral artery occlusion (MCAO) model in Sprague-Dawley rats (260-280 g, n = 8-15) with a sham operation group being treated as negative control. MCAO rats were treated with wasp venom (0.05, 0.2 and 0.6 mg/kg, i.p.) using intraperitoneal injection. After treatment 48 h, behavioural tests, cortical blood flow (CBF), TTC staining, H&E staining, Nissl staining, TUNEL assay, immunohistochemistry (IHC) and ELISA were employed to investigate neuroprotective effects of wasp venom. RESULTS Compared with the MCAO group, wasp venom (0.6 mg/kg) improved neurological impairment, accelerated CBF recovery (205.6 ± 52.92 versus 216.7 ± 34.56), reduced infarct volume (337.1 ± 113.2 versus 140.7 ± 98.03) as well as BBB permeability as evidenced by changes in claudin-5 and AQP4. In addition, function recovery of stroke by wasp venom treatment was associated with a decrease in TNF-α, IL-1β, IL-6 and inhibition activated microglia as well as apoptosis. Simultaneously, the wasp venom regulated the angiogenesis factors VEGF and b-FGF in the brain. CONCLUSIONS Wasp venom exhibited a potential neuroprotective effect for AIS. In the future, we will focus on determining whether the observed actions were due to a single compound or the interaction of multiple components of the venom.
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Affiliation(s)
- Hairong Zhao
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R&D, Dali University, Dali, PR China
- School of Medicine, Xiamen University, Xiamen, PR China
| | - Mei Wang
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R&D, Dali University, Dali, PR China
| | - Xi Huang
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R&D, Dali University, Dali, PR China
| | - Xiumei Wu
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R&D, Dali University, Dali, PR China
- National-Local Joint Engineering Research Center of Entomoceutics, Dali, PR China
| | - Huai Xiao
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R&D, Dali University, Dali, PR China
- National-Local Joint Engineering Research Center of Entomoceutics, Dali, PR China
| | - Fanmao Jin
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R&D, Dali University, Dali, PR China
| | - Jiaming Lv
- School of Medicine, Xiamen University, Xiamen, PR China
| | - Jidong Cheng
- School of Medicine, Xiamen University, Xiamen, PR China
| | - Yu Zhao
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R&D, Dali University, Dali, PR China
- National-Local Joint Engineering Research Center of Entomoceutics, Dali, PR China
| | - Chenggui Zhang
- Yunnan Provincial Key Laboratory of Entomological Biopharmaceutical R&D, Dali University, Dali, PR China
- National-Local Joint Engineering Research Center of Entomoceutics, Dali, PR China
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6
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Mohammaden MH, Haussen DC, Al-Bayati AR, Hassan A, Tekle W, Fifi J, Matsoukas S, Kuybu O, Gross BA, Lang MJ, Narayanan S, Cortez GM, Hanel RA, Aghaebrahim A, Sauvageau E, Farooqui M, Ortega-Gutierrez S, Zevallos C, Galecio-Castillo M, Sheth SA, Nahhas M, Salazar-Marioni S, Nguyen TN, Abdalkader M, Klein P, Hafeez M, Kan P, Tanweer O, Khaldi A, Li H, Jumaa M, Zaidi S, Oliver M, Salem MM, Burkhardt JK, Pukenas BA, Alaraj A, Peng S, Kumar R, Lai M, Siegler J, Nogueira RG. Stenting and Angioplasty in Neurothrombectomy: Matched Analysis of Rescue Intracranial Stenting Versus Failed Thrombectomy. Stroke 2022; 53:2779-2788. [DOI: 10.1161/strokeaha.121.038248] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND:
Successful reperfusion is one of the strongest predictors of functional outcomes after mechanical thrombectomy (MT). Despite continuous advancements in MT technology and techniques, reperfusion failure still occurs in ≈15% to 30% of patients with large vessel occlusion strokes undergoing MT. We aim to evaluate the safety and efficacy of rescue intracranial stenting for large vessel occlusion stroke after failed MT.
METHODS:
The SAINT (Stenting and Angioplasty in Neurothrombectomy) Study is a retrospective analysis of prospectively collected data from 14 comprehensive stroke centers through January 2015 to December 2020. Patients were included if they had anterior circulation large vessel occlusion stroke due to intracranial internal carotid artery and middle cerebral artery-M1/M2 segments and failed MT. The cohort was divided into 2 groups: rescue intracranial stenting and failed recanalization (modified Thrombolysis in Cerebral Ischemia score 0–1). Propensity score matching was used to balance the 2 groups. The primary outcome was the shift in the degree of disability as measured by the modified Rankin Scale at 90 days. Secondary outcomes included functional independence (90-day modified Rankin Scale score 0–2). Safety measures included symptomatic intracranial hemorrhage and 90-day mortality.
RESULTS:
A total of 499 patients were included in the analysis. Compared with the failed reperfusion group, rescue intracranial stenting had a favorable shift in the overall modified Rankin Scale score distribution (acOR, 2.31 [95% CI, 1.61–3.32];
P
<0.001), higher rates of functional independence (35.1% versus 7%; adjusted odds ratio [aOR], 6.33 [95% CI, 3.14–12.76];
P
<0.001), and lower mortality (28% versus 46.5%; aOR, 0.55 [95% CI, 0.31–0.96];
P
=0.04) at 90 days. Rates of symptomatic intracerebral hemorrhage were comparable across both groups (7.1% versus 10.2%; aOR, 0.99 [95% CI, 0.42–2.34];
P
=0.98). The matched cohort analysis demonstrated similar results. Specifically, rescue intracranial stenting (n=107) had a favorable shift in the overall modified Rankin Scale score distribution (acOR, 3.74 [95% CI, 2.16–6.57];
P
<0.001), higher rates of functional independence (34.6% versus 6.5%; aOR, 10.91 [95% CI, 4.11–28.92];
P
<0.001), and lower mortality (29.9% versus 43%; aOR, 0.49 [95% CI, 0.25–0.94];
P
=0.03) at 90 days with similar rates of symptomatic intracerebral hemorrhage (7.5% versus 11.2%; aOR, 0.87 [95% CI, 0.31–2.42];
P
=0.79) compared with patients who failed to reperfuse (n=107). There was no heterogeneity of treatment effect across the prespecified subgroups for improvement in functional outcomes.
CONCLUSIONS:
Acute intracranial stenting appears to be a safe and effective rescue strategy in patients with large vessel occlusion stroke who failed MT. Randomized multicenter trials are warranted.
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Affiliation(s)
- Mahmoud H. Mohammaden
- Department of Neurology, Marcus Stroke & Neuroscience Center, Grady Memorial Hospital, Emory University School of Medicine-Atlanta, GA (M.H.M., D.C.H.)
| | - Diogo C. Haussen
- Department of Neurology, Marcus Stroke & Neuroscience Center, Grady Memorial Hospital, Emory University School of Medicine-Atlanta, GA (M.H.M., D.C.H.)
| | - Alhamza R. Al-Bayati
- UPMC Stroke Institute, Departments of Neurology and Neurosurgery, University of Pittsburgh School of Medicine, PA (A.R.A.-B., O.K., B.A.G., M.J.L., S.N., R.G.N.)
| | - Ameer Hassan
- Department of Neurology, Valley Baptist Medical Center, Harlingen, TX (A.H., W.T.)
| | - Wondwossen Tekle
- Department of Neurology, Valley Baptist Medical Center, Harlingen, TX (A.H., W.T.)
| | - Johanna Fifi
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York (J.F., S.M.)
| | - Stavros Matsoukas
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York (J.F., S.M.)
| | - Okkes Kuybu
- UPMC Stroke Institute, Departments of Neurology and Neurosurgery, University of Pittsburgh School of Medicine, PA (A.R.A.-B., O.K., B.A.G., M.J.L., S.N., R.G.N.)
| | - Bradley A. Gross
- UPMC Stroke Institute, Departments of Neurology and Neurosurgery, University of Pittsburgh School of Medicine, PA (A.R.A.-B., O.K., B.A.G., M.J.L., S.N., R.G.N.)
| | - Michael J. Lang
- UPMC Stroke Institute, Departments of Neurology and Neurosurgery, University of Pittsburgh School of Medicine, PA (A.R.A.-B., O.K., B.A.G., M.J.L., S.N., R.G.N.)
| | - Sandra Narayanan
- UPMC Stroke Institute, Departments of Neurology and Neurosurgery, University of Pittsburgh School of Medicine, PA (A.R.A.-B., O.K., B.A.G., M.J.L., S.N., R.G.N.)
| | - Gustavo M. Cortez
- Lyerly Neurosurgery, Baptist Medical Center Downtown, Jacksonville, FL (G.M.C., R.A.H., A.A., E.S.)
| | - Ricardo A. Hanel
- Lyerly Neurosurgery, Baptist Medical Center Downtown, Jacksonville, FL (G.M.C., R.A.H., A.A., E.S.)
| | - Amin Aghaebrahim
- Lyerly Neurosurgery, Baptist Medical Center Downtown, Jacksonville, FL (G.M.C., R.A.H., A.A., E.S.)
| | - Eric Sauvageau
- Lyerly Neurosurgery, Baptist Medical Center Downtown, Jacksonville, FL (G.M.C., R.A.H., A.A., E.S.)
| | - Mudassir Farooqui
- Department of Neurology, University of Iowa Hospitals and Clinics, Iowa City (M.F., S.O.-G., C.Z., M.G.-C.)
| | - Santiago Ortega-Gutierrez
- Department of Neurology, University of Iowa Hospitals and Clinics, Iowa City (M.F., S.O.-G., C.Z., M.G.-C.)
| | - Cynthia Zevallos
- Department of Neurology, University of Iowa Hospitals and Clinics, Iowa City (M.F., S.O.-G., C.Z., M.G.-C.)
| | - Milagros Galecio-Castillo
- Department of Neurology, University of Iowa Hospitals and Clinics, Iowa City (M.F., S.O.-G., C.Z., M.G.-C.)
| | - Sunil A. Sheth
- Department of Neurology, University of Texas, Houston (S.A.S., M.N., S.S.-M.)
| | - Michael Nahhas
- Department of Neurology, University of Texas, Houston (S.A.S., M.N., S.S.-M.)
| | | | - Thanh N. Nguyen
- Department of Neurology, Radiology, Boston University School of Medicine, MA (T.N.N., M.A., P.K.)
| | - Mohamad Abdalkader
- Department of Neurology, Radiology, Boston University School of Medicine, MA (T.N.N., M.A., P.K.)
| | - Piers Klein
- Department of Neurology, Radiology, Boston University School of Medicine, MA (T.N.N., M.A., P.K.)
| | - Muhammad Hafeez
- Department of Neurosurgery, Baylor School of Medicine, Houston, TX (M.H., P.K., O.T.)
| | - Peter Kan
- Department of Neurosurgery, Baylor School of Medicine, Houston, TX (M.H., P.K., O.T.)
| | - Omar Tanweer
- Department of Neurosurgery, Baylor School of Medicine, Houston, TX (M.H., P.K., O.T.)
| | - Ahmad Khaldi
- Department of Neurosciences, WellStar Health System, Atlanta, GA (A.K., H.L.)
| | - Hanzhou Li
- Department of Neurosciences, WellStar Health System, Atlanta, GA (A.K., H.L.)
| | - Mouhammad Jumaa
- Department of Neurology, University of Toledo, OH (M.J., S.Z., M.O.)
| | - Syed Zaidi
- Department of Neurology, University of Toledo, OH (M.J., S.Z., M.O.)
| | - Marion Oliver
- Department of Neurology, University of Toledo, OH (M.J., S.Z., M.O.)
| | - Mohamed M. Salem
- Department of Neurosurgery, University of Pennsylvania, Philadelphia (M.M.S., J.-K.B., B.A.P.)
| | - Jan-Karl Burkhardt
- Department of Neurosurgery, University of Pennsylvania, Philadelphia (M.M.S., J.-K.B., B.A.P.)
| | - Bryan A. Pukenas
- Department of Neurosurgery, University of Pennsylvania, Philadelphia (M.M.S., J.-K.B., B.A.P.)
| | - Ali Alaraj
- Department of Neurosurgery, University of Illinois at Chicago (A.A., S.P.)
| | - Sophia Peng
- Department of Neurosurgery, University of Illinois at Chicago (A.A., S.P.)
| | - Rahul Kumar
- Department of Neurology, Cooper University Medical Center, Camden, NJ (R.K., M.L., J.S.)
| | - Michael Lai
- Department of Neurology, Cooper University Medical Center, Camden, NJ (R.K., M.L., J.S.)
| | - James Siegler
- Department of Neurology, Cooper University Medical Center, Camden, NJ (R.K., M.L., J.S.)
| | - Raul G. Nogueira
- UPMC Stroke Institute, Departments of Neurology and Neurosurgery, University of Pittsburgh School of Medicine, PA (A.R.A.-B., O.K., B.A.G., M.J.L., S.N., R.G.N.)
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7
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Tao C, Li R, Zhu Y, Qun S, Xu P, Wang L, Zhang C, Liu T, Song J, Sun W, Wang G, Baxter B, Qureshi A, Liu X, Nogueira R, Hu W. Endovascular treatment for acute Basilar Artery Occlusion - a multicenter randomized controlled trial (ATTENTION). Int J Stroke 2022; 17:815-819. [PMID: 35102797 DOI: 10.1177/17474930221077164] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND AND HYPOTHESIS Recently, two multicenter randomized controlled trials (RCT) failed to show a significantly beneficial effect of endovascular treatment (EVT) in patients with acute basilar artery occlusion (BAO). However, both trials suffered from equipoise issues which may have hindered the validity of the trial results. Therefore, additional RCT studies are needed to explore the potential benefit of EVT in patients presenting with BAO. STUDY DESIGN ATTENTION is an investigator-initiated, multicenter, prospective, randomized, controlled clinical trial with open-label treatment and blinded outcome assessment (PROBE) of EVT versus best medical management (BMM). The primary effect parameter is a modified Rankin Score of 0-3 at day 90. DISCUSSION ATTENTION will provide evidence for the efficacy and safety of EVT in stroke patients within 12 hours after BAO.
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Affiliation(s)
| | - Rui Li
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Stroke Center & Department of Neurology, Hefei, China
| | - Yuyou Zhu
- Stroke Center & Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Sen Qun
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Stroke Center & Department of Neurology, Hefei, China
| | - Pengfei Xu
- University of Science and Technology of China, Hefei, China 12652
| | - Li Wang
- University of Science and Technology of China, Stroke Center & Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Hefei, China 12652
| | - Chao Zhang
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Stroke Center & Department of Neurology, Hefei, China
| | - Tianlong Liu
- Stroke Center & Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Jianlong Song
- Stroke Center & Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Wen Sun
- The First Affiliated Hospital of USTC, Hefei, China 117556
| | - Guoping Wang
- Stroke Center & Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Blaise Baxter
- Erlanger Health System, Neuroradiolgy, Chattanooga, United States 2362
| | - Adnan Qureshi
- University of Missouri, Department of Neurology, Columbia, United States 14716
| | - Xinfeng Liu
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Stroke Center & Department of Neurology, Hefei, China
| | - Raul Nogueira
- University of Pittsburgh Medical Center Stroke Institute, Pittsburgh, United States 571397
| | - Wei Hu
- Stroke Center & Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
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8
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Sweid A, Sajja KC, Mouchtouris N, Weinberg JH, Shivashankar K, Saad H, Abbas R, El Naamani K, Ramesh S, Schaefer J, Saiegh FA, Jabbour P, Herial NA, Zarzour H, Tjoumakaris S, Romo V, Rosenwasser RH, Gooch MR. Rescue stenting for acute ischemic stroke with Refractory Emergent Large vessel occlusion in the modern thrombectomy era. Clin Neurol Neurosurg 2022; 215:107183. [DOI: 10.1016/j.clineuro.2022.107183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 01/20/2022] [Accepted: 02/19/2022] [Indexed: 11/03/2022]
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9
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Hasan TF, Hasan H, Kelley RE. Overview of Acute Ischemic Stroke Evaluation and Management. Biomedicines 2021; 9:1486. [PMID: 34680603 PMCID: PMC8533104 DOI: 10.3390/biomedicines9101486] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 10/05/2021] [Accepted: 10/13/2021] [Indexed: 01/19/2023] Open
Abstract
Stroke is a major contributor to death and disability worldwide. Prior to modern therapy, post-stroke mortality was approximately 10% in the acute period, with nearly one-half of the patients developing moderate-to-severe disability. The most fundamental aspect of acute stroke management is "time is brain". In acute ischemic stroke, the primary therapeutic goal of reperfusion therapy, including intravenous recombinant tissue plasminogen activator (IV TPA) and/or endovascular thrombectomy, is the rapid restoration of cerebral blood flow to the salvageable ischemic brain tissue at risk for cerebral infarction. Several landmark endovascular thrombectomy trials were found to be of benefit in select patients with acute stroke caused by occlusion of the proximal anterior circulation, which has led to a paradigm shift in the management of acute ischemic strokes. In this modern era of acute stroke care, more patients will survive with varying degrees of disability post-stroke. A comprehensive stroke rehabilitation program is critical to optimize post-stroke outcomes. Understanding the natural history of stroke recovery, and adapting a multidisciplinary approach, will lead to improved chances for successful rehabilitation. In this article, we provide an overview on the evaluation and the current advances in the management of acute ischemic stroke, starting in the prehospital setting and in the emergency department, followed by post-acute stroke hospital management and rehabilitation.
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Affiliation(s)
- Tasneem F. Hasan
- Department of Neurology, Ochsner Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA;
| | - Hunaid Hasan
- Hasan & Hasan Neurology Group, Lapeer, MI 48446, USA;
| | - Roger E. Kelley
- Department of Neurology, Ochsner Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA;
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10
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Ma G, Sun X, Tong X, Jia B, Huo X, Luo G, Wang B, Deng Y, Gao F, Song L, Ma N, Miao Z, Mo D. Safety and Efficacy of Direct Angioplasty in Acute Basilar Artery Occlusion Due to Atherosclerosis. Front Neurol 2021; 12:651653. [PMID: 34349717 PMCID: PMC8326335 DOI: 10.3389/fneur.2021.651653] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 06/16/2021] [Indexed: 11/15/2022] Open
Abstract
Background and Purpose: Endovascular treatment (EVT) is one of the promising treatment options in patients with intracranial atherosclerotic disease (ICAD)-related basilar artery occlusion (BAO). In this study, we compared the safety and efficacy of direct angioplasty (DA) with stent-retriever thrombectomy (SRT) with or without rescue treatment in ICAD-related BAO. Methods: We retrospectively evaluated 187 patients who underwent EVT for BAO from January 2012 to July 2018. We identified patients who underwent EVT due to ICAD-related BAO. Patients who accepted SRT with or without rescue treatment were classified into the SRT group. Patients treated with DA with or without stent placement were classified into DA group. Clinical and laboratory findings and outcomes were compared between groups. Results: A total of 108 patients were enrolled, among them 77 underwent SRT and 31 underwent DA; 61 (79.2%) SRT group patients underwent angioplasty with or without stent placement. Compared with patients in the SRT group, those in the DA group experienced a significantly shorter procedure time [60 min (60–120 min) vs. 120 min (60–120 min); p = 0.038] and a lower number of device passes [2 passes (1–2 passes) vs. 3 passes (2–4 passes); p < 0.001]. No significant differences in balloon angioplasty (35.5 vs. 22.1%; p = 0.150), emergent stent placement (64.5 vs. 57.1%; p = 0.481), successful recanalization (93.5 vs. 85.7%; p = 0.340), embolization in distal or new territory (3.2 vs. 9.1%, p = 0.314), and reocclusion (22.6 vs. 9.1%; p = 0.109) among DA and SRT groups were found. Additionally, no differences in symptomatic intracranial hemorrhage incidence [adjusted odds ratio (OR), 0.74; 95% CI, 0.06–9.44; p = 0.815], functional independence (adjusted OR, 1.44; 95% CI, 0.50–4.16; p = 0.497), and mortality rate (adjusted OR, 0.36; 95% CI, 0.06–2.04; p = 0.247) were noted among groups. Conclusions: In certain patients with ICAD-related BAO, DA may shorten procedure time and reduce required device passes compared to SRT. In this study, DA was retrospectively found to be of similar safety and efficacy as SRT.
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Affiliation(s)
- Gaoting Ma
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xuan Sun
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xu Tong
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Baixue Jia
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xiaochuan Huo
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Gang Luo
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Bo Wang
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yiming Deng
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Feng Gao
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Ligang Song
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Ning Ma
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Zhongrong Miao
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Dapeng Mo
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
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11
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Wang XF, Wang M, Li G, Xu XY, Shen W, Liu J, Xiao SS, Zhou JH. Efficacy of Solitaire AB stent-release angioplasty in acute middle cerebral artery atherosclerosis obliterative cerebral infarction. World J Clin Cases 2021; 9:5028-5036. [PMID: 34307553 PMCID: PMC8283618 DOI: 10.12998/wjcc.v9.i19.5028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/10/2021] [Accepted: 04/20/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND In both national and international studies, the safety and effectiveness of treatment with the Solitaire stent in patients with ischemic stroke caused by acute large vessel occlusion were good, and the disability rate was significantly reduced. However, there are currently only a few reports on the differences in endovascular treatment for different etiological classifications, especially in the anterior cranial circulation, aorta atherosclerotic stenosis, and acute thrombosis.
AIM To investigate the efficacy of Solitaire AB stent-release angioplasty in patients with acute middle cerebral artery atherosclerosis obliterative cerebral infarction.
METHODS Twenty-five patients with acute middle cerebral atherosclerosis obliterative cerebral infarction were retrospectively enrolled in this study from January 2017 to December 2019. The Solitaire AB stent was used to improve anterior blood flow to maintain modified cerebral infarction thrombolysis [modified thrombolysis in cerebral infarction (mTICI)] at the 2b/3 level or above, the stent was then unfolded and released.
RESULTS All 25 patients underwent successful surgery, with an average recanalization time of 23 min. One patient died of cerebral hemorrhage and cerebral herniation after the operation. The National Institutes of Health Stroke Scale (NIHSS) scores immediately after surgery (7.5 ± 5.6), at 24 h (5.5 ± 5.6) and at 1 wk (3.6 ± 6.7) compared with the preoperative NIHSS score (15.9 ± 4.4), were significantly different (P < 0.01). One case of restenosis was observed 3 mo after surgery (the stenosis rate was 50% without clinical symptoms), the modified Rankin scale scores were 0 points in 14 cases (56%), 1 point in 4 cases (16%), 2 points in 2 cases (8%), 3 points in 3 cases (12%), 4 points in 1 case (4%), and 6 points in 1 case (4%).
CONCLUSION In acute middle cerebral artery atherosclerosis obliterative cerebral infarction, when the Solitaire AB stent is unfolded and the forward blood flow is maintained at mTICI level 2b/3 or higher, stent release may be a safe and effective treatment method; however, long-term observation and a larger sample size are required to verify these findings.
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Affiliation(s)
- Xi-Feng Wang
- Department of Neurology, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430033, Hubei Province, China
| | - Ming Wang
- Department of Neurology, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430033, Hubei Province, China
| | - Gang Li
- Department of Neurology, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430033, Hubei Province, China
| | - Xue-Yu Xu
- Department of Neurology, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430033, Hubei Province, China
| | - Wei Shen
- Department of Neurology, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430033, Hubei Province, China
| | - Jing Liu
- Department of Neurology, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430033, Hubei Province, China
| | - Shuang-Shuang Xiao
- Department of Neurology, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430033, Hubei Province, China
| | - Jiang-Hong Zhou
- Department of Neurology, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430033, Hubei Province, China
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12
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Bageac DV, Gershon BS, De Leacy RA. The Evolution of Devices and Techniques in Endovascular Stroke Therapy. Stroke 2021. [DOI: 10.36255/exonpublications.stroke.devicesandtechniques.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Al Kasab S, Almallouhi E, Alawieh A, Wolfe S, Fargen KM, Arthur AS, Goyal N, Dumont T, Kan P, Kim JT, De Leacy R, Maier I, Osbun J, Rai A, Jabbour P, Grossberg JA, Park MS, Starke RM, Crosa R, Spiotta AM. Outcomes of Rescue Endovascular Treatment of Emergent Large Vessel Occlusion in Patients With Underlying Intracranial Atherosclerosis: Insights From STAR. J Am Heart Assoc 2021; 10:e020195. [PMID: 34096337 PMCID: PMC8477850 DOI: 10.1161/jaha.120.020195] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Some emergent large vessel occlusions (ELVOs) are refractory to reperfusion because of underlying intracranial atherosclerosis (ICAS), often requiring rescue therapy (RT) with balloon angioplasty, stenting, or both. In this study, we investigate the safety, efficacy, and long‐term outcomes of RT in the setting of mechanical thrombectomy for ICAS‐related ELVO. Methods and Results We queried the databases of 10 thrombectomy‐capable centers in North America and Europe included in STAR (Stroke Thrombectomy and Aneurysm Registry). Patients with ELVO who underwent ICAS‐related RT were included. A matched sample was produced for variables of age, admission National Institute of Health Stroke Scale, Alberta Stroke Program Early CT Score, onset to groin puncture time, occlusion site, and final recanalization. Out of 3025 patients with MT, 182 (6%) patients required RT because of underlying ICAS. Balloon angioplasty was performed on 122 patients, and 117 patients had intracranial stenting. In the matched analysis, 141 patients who received RT matched to a similar number of controls. The number of thrombectomy passes was higher (3 versus 1, P<0.001), and procedural time was longer in the RT group (52 minutes versus 36 minutes, P=0.004). There was a higher rate of symptomatic hemorrhagic transformation in the RT group (7.8% versus 4.3%, P=0.211), however, the difference was not significant. There was no difference in 90‐day modified Rankin scale of 0 to 2 (44% versus 47.5%, P=0.543) between patients in the RT and control groups. Conclusions In patients with ELVO with underlying ICAS requiring RT, despite longer procedure time and a more thrombectomy passes, the 90 days favorable outcomes were comparable with patients with embolic ELVO.
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Affiliation(s)
- Sami Al Kasab
- Department of Neurology Medical University of South Carolina Charleston SC.,Department of Neurosurgery Medical University of South Carolina Charleston SC
| | - Eyad Almallouhi
- Department of Neurology Medical University of South Carolina Charleston SC.,Department of Neurosurgery Medical University of South Carolina Charleston SC
| | - Ali Alawieh
- Department of Neurosurgery Emory University School of Medicine Atlanta GA
| | - Stacey Wolfe
- Department of Neurosurgery Wake Forest School of Medicine Winston Salem NC
| | - Kyle M Fargen
- Department of Neurosurgery Wake Forest School of Medicine Winston Salem NC
| | - Adam S Arthur
- Department of Neurosurgery Semmes-Murphey Neurologic and Spine Clinic University of Tennessee Health Science Center Memphis TN
| | - Nitin Goyal
- Department of Neurosurgery Semmes-Murphey Neurologic and Spine Clinic University of Tennessee Health Science Center Memphis TN.,Department of Neurology University of Tennessee Health Science Center Memphis TN
| | - Travis Dumont
- Department of Neurosurgery University of Arizona Health Sciences Tucson AZ
| | - Peter Kan
- Department of Neurosurgery Baylor School of Medicine Houston TX
| | - Joon-Tae Kim
- Department of Neurology Chonnam National University Hospital Seoul South Korea
| | - Reade De Leacy
- Department of Neurosurgery Mount Sinai Health System New York NY
| | - Ilko Maier
- Department of Neurology University Medical Center Göttingen Göttingen Germany
| | - Joshua Osbun
- Department of Neurosurgery Washington University of School of Medicine St. Louis MO
| | - Ansaar Rai
- Department of Radiology West Virginia School of Medicine Morgantown WV
| | - Pascal Jabbour
- Department of Neurosurgery Thomas Jefferson University Hospitals Philadelphia PA
| | | | - Min S Park
- Department of Neurosurgery University of Virginia Charlottesville VA
| | - Robert M Starke
- Department of Neurosurgery University of Miami Health System Miami FL
| | - Roberto Crosa
- Department of Neurosurgery Endovascular Neurological Center Médica Uruguaya Montevideo Uruguay
| | - Alejandro M Spiotta
- Department of Neurosurgery Medical University of South Carolina Charleston SC
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14
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Yi HJ, Sung JH, Lee DH. Preliminary Experience of Neuroform Atlas Stenting as a Rescue Treatment after Failure of Mechanical Thrombectomy Caused by Residual Intracranial Atherosclerotic Stenosis. J Korean Neurosurg Soc 2021; 64:198-206. [PMID: 33715323 PMCID: PMC7969043 DOI: 10.3340/jkns.2020.0146] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 07/20/2020] [Indexed: 01/02/2023] Open
Abstract
Objective The low-profile Neuroform Atlas stent can be deployed directly without an exchange maneuver by navigating into the Gateway balloon. This retrospective study assessed the safety and efficacy of Neuroform Atlas stenting as a rescue treatment after failure of mechanical thrombetomy (MT) for large artery occlusion.
Methods Between June 2018 and December 2019, a total of 31 patients underwent Neuroform Atlas stenting with prior Gateway balloon angioplasty after failure of conventional MT caused by residual intracranial atherosclerotic stenosis (ICAS). Primary outcomes were successful recanalization and patency of the vessel 24 hours after intervention. Secondary outcomes were vessel patency after 14 days and 3-month modified Rankin Scale. Peri-procedural complications, intracerebral hemorrhage (ICH), and 3-month mortality were reviewed.
Results With a 100% of successful recanalization, median value of stenosis was reduced from 79.0% to 23.5%. Twenty-eight patients (90.3%) showed tolerable vessel patency after 14 days. New infarctions occurred in three patients (9.7%) over a period of 14 days; two patient (6.5%) underwent stent occlusion at 24 hours, and the other patient (3.2%) with delayed stent occlusion had a non-symptomatic dot infarct. There were no peri-procedural complications. Two patients (6.5%) developed an ICH immediately after the procedure with one of them is symptomatic.
Conclusion Neuroform Atlas stenting seems to be an effective and safe rescue treatment modality for failed MT with residual ICAS, by its high successful recanalization rate with tolerable patency, and low peri-procedural complication rate. Further multicenter and randomized controlled trials are needed to confirm our findings.
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Affiliation(s)
- Ho Jun Yi
- Department of Neurosurgery, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea.,Department of Neurosurgery, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Jae Hoon Sung
- Department of Neurosurgery, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Dong Hoon Lee
- Department of Neurosurgery, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
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15
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Abstract
Endovascular therapy (EVT) has become the standard treatment for large-vessel occlusion (LVO) acute ischemic stroke (AIS). EVT is now indicated in patients up to 24h from their last known well, provided that the patient meets specific clinical and imaging criteria. Improvements in thrombectomy devices, techniques, and operator experience have allowed successful EVT of ICA terminus, M1-MCA occlusions as well as proximal M2-MCA, basilar artery occlusions, and revascularization of tandem lesions. Mechanical thrombectomy failures still occur due to several factors, however, highlighting the need for further device and technical improvements. An ongoing debate exists regarding the need for pre-EVT thrombolytic agents, thrombectomy techniques, distal occlusions, anesthesia methods, the role of advanced neuroimaging, the treatment of patients with larger infarct core, and those presenting with milder stroke symptoms. Many of these questions are the subject of current or upcoming clinical trials. This review aims to provide an outline and discussion about the established recommendations and emerging topics regarding EVT for LVO AIS.
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Affiliation(s)
- Fabio Settecase
- Neuroradiology Division, Department of Radiology, University of British Columbia, Vancouver, BC, Canada; Diagnostic and Interventional Neuroradiology Division, Department of Radiology, Vancouver General Hospital, Vancouver, BC, Canada; Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States.
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16
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Lin YY, Yu TY, Quan H, Chen YJ, Liu XY, Huang DY. Association Between PSD95 Gene 3′UTR Single Nucleotide Polymorphism and Risk of Acute Ischemic Stroke in Chinese Han Population. J Mol Neurosci 2020; 70:1389-1402. [DOI: 10.1007/s12031-020-01559-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 04/22/2020] [Indexed: 10/24/2022]
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17
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Effect of direct angioplasty therapy on acute middle cerebral artery occlusion with good leptomeningeal collateral. Clin Neurol Neurosurg 2020; 190:105744. [PMID: 32105908 DOI: 10.1016/j.clineuro.2020.105744] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 02/09/2020] [Accepted: 02/18/2020] [Indexed: 11/20/2022]
Abstract
OBJECTIVE The objective of this study was to investigate and discuss the effect of direct angioplasty therapy on acute middle cerebral artery occlusion (MCAO) patients with good leptomeningeal collateral circulation in 4.5 h. PATIENTS AND METHODS We retrospectively reviewed our acute ischemic stroke database from January 2017 to January 2019, then selected consecutive patients with evidence of the proximal M1 segments of MCAO and good leptomeningeal collateral who have received angioplasty or mechanical thrombectomy (MT). The baseline characteristics and outcome of patients was statistical analysis, included age, gender and risk factors, baseline national institutes of health stroke scale (NIHSS) scores, preoperative alberta stroke programme early CT (ASPECT) score, time from door to needle, time of door to puncture, endovascular procedure time, 7d NIHSS score and the modified treatment in cerebral infarction (m-TICI) 2b or 3, symptomatic hemorrhage, average hospital stays, modified rankin scale (mRS) score 0-2 at 3-month and mortality. All the thrombi were analyzed by histopathology. All statistical analysis was done with t-test for continuous data and χ2 test for binary data. RESULTS A total of 93 patients were included (direct angioplasty = 41 (44.1 %), MT = 52 (55.9 %)). There was no significant difference in baseline data between the two groups. The difference in the time of door to recanalization, the time of puncture to recanalization, symptomatic hemorrhage, and average hospital stays were significantly different between groups (P < 0.05). The other agents were not significantly different between groups (P > 0.05 each). Histopathological analysis showed all thrombi contained different amounts of platelets, fibrinogen, white blood cell, and red blood cell. CONCLUSION Direct angioplasty therapy on acute MCAO with good leptomeningeal collateral may help to shorten the time of surgery, reduce symptomatic hemorrhage, and hospital stay.
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Feng MT, Zhang HJ, Zhang YX, Xing PF, Zhang L, Zhang YW, Li ZF, Xu Y, Hong B, Huang QH, Yang PF, Liu JM. Stent Angioplasty for Acute Intracranial Atherosclerotic Occlusion After Failed Thrombectomy: A Single-Institution Series of 55 Patients. World Neurosurg 2019; 130:e444-e448. [DOI: 10.1016/j.wneu.2019.06.112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 06/13/2019] [Accepted: 06/14/2019] [Indexed: 10/26/2022]
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19
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Wu C, Chang W, Wu D, Wen C, Zhang J, Xu R, Liu X, Lian Y, Xie N, Li C, Wei W, Zhao W, Ma Z, Gao Z, Ji X. Angioplasty and/or stenting after thrombectomy in patients with underlying intracranial atherosclerotic stenosis. Neuroradiology 2019; 61:1073-1081. [DOI: 10.1007/s00234-019-02262-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 07/08/2019] [Indexed: 10/26/2022]
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20
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Gross BA, Desai SM, Walker G, Jankowitz BT, Jadhav A, Jovin TG. Balloon-mounted stents for acute intracranial large vessel occlusion secondary to presumed atherosclerotic disease: evolution in an era of supple intermediate catheters. J Neurointerv Surg 2019; 11:975-978. [DOI: 10.1136/neurintsurg-2019-014877] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 04/18/2019] [Accepted: 04/23/2019] [Indexed: 11/03/2022]
Abstract
IntroductionTreatment of acute large vessel occlusion (LVO) stroke secondary to intracranial atherosclerotic disease (ICAD) is more nuanced with disparate and infrequently reported outcomes. The deployment of balloon-mounted stents presents an expedient approach with renewed feasibility in the modern era of supple intermediate catheters.MethodsA prospectively maintained endovascular stroke database was searched for patients undergoing intracranial stenting with balloon-mounted stents for acute LVO. Demographic, angiographic, and clinical data were extracted to determine procedural technique and success, measured both angiographically and clinically.ResultsSixty patients underwent stenting for acute LVO secondary to ICAD. Mean presenting National Institutes of Health Stroke Scale (NIHSS) score was 18 and 62% of treated sites were in the posterior circulation. Cases were performed under IV conscious sedation unless the patient was already intubated. Successful recanalization was achieved in 93% of cases (Thrombolysis in Cerebral Infarction (TICI) grade 2b in 48% and TICI grade 3 in 45%). Mean improvement in NIHSS score on post-procedure day 1 was 3.4. Good outcome (modified Rankin Scale score 0–2) at 3 months was 34% and the mortality rate was 34%. The rate of peri-procedural symptomatic hemorrhage was 8% and the rate of acute/subacute stent thrombosis was 7%. In this small cohort, patient age, sex, presenting NIHSS, comorbidities, smoking, tissue plasminogen activator administration, and stent location were not significant predictors of recanalization or good outcome.ConclusionTreatment of acute LVO stroke with balloon-mounted stents for ICAD has reperfusion rates and clinical outcomes comparable to thrombectomy, with higher rates of hemorrhage and mortality. Because stent placement was performed after attempted thrombectomy, a trial of primary stenting versus thrombectomy should be considered in patients suspected of underlying ICAD.
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Lee SU, Kim T, Kwon OK, Bang JS, Ban SP, Byoun HS, Oh CW. Trends in the Incidence and Treatment of Cerebrovascular Diseases in Korea : Part II. Cerebral Infarction, Cerebral Arterial Stenosis, and Moyamoya Disease. J Korean Neurosurg Soc 2019; 63:69-79. [PMID: 31064040 PMCID: PMC6952727 DOI: 10.3340/jkns.2018.0182] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 11/26/2018] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVE To analyze trends in the incidence and treatment of diseases associated with ischemic stroke, namely, cerebral infarction (CI), cerebral arterial stenosis (CASTN), and moyamoya disease (MMD), based on Korean National Health Insurance Service (NHIS) data from 2008 to 2016. METHODS Data was extracted from the national health-claim database provided by the NHIS for 2008-2016 using International Classification of Diseases codes. The crude and age-standardized incidences of each disease (CI, CASTN without a history of CI, and MMD) were calculated; additional analyses were conducted according to age and sex. Trends in the number of patients undergoing treatment according to treatment method were analyzed for each disease using the Korean Classification of Diseases procedure codes. RESULTS In 2016, the total number of adults with newly diagnosed CI was 83939, reflecting a 9.4% decrease from that in 2008. The agestandardized incidence of CI in adults was 153.2 per 100000 person-years in 2016, reflecting a 37.2% decrease from that in 2008, while that of CASTN was 167.3 per 100000 person-years in 2016, reflecting a 73.3% increase from that in 2008. Among treated cases, the number of patients who underwent intra-arterial (IA) treatment, including IA fibrinolysis and mechanical thrombectomy, showed the most prominent increase, increasing at an annual rate of 25.8%. For CASTN, the number of cases treated with carotid artery stenting or balloon angioplasty (CAS) showed the most prominent increase, increasing at a rate of 69.8% over the 9-year period. For MMD, the total number of patients with newly diagnosed MMD and that with adult MMD demonstrated significantly increasing trends, while the number of pediatric patients with newly diagnosed MMD declined by 18.0% over the 9-year period. The age-standardized incidences of pediatric and adult MMD in 2016 were 2.4 and 3.4 per 100000 person-years, respectively. CONCLUSION Although the incidence of CI showed a declining trend over a 9-year period, the number and proportion of patients treated for CI increased. Meanwhile, the incidence of CASTN and the number of patients treated for CASTN have demonstrated increasing trends since 2008. On the other hand, the number of patients diagnosed with pediatric MMD decreased, despite no significant change in the incidence. In contrast, the number of patients and the incidence of adult MMD increased. These trends reflect changes in the population structure, gains in the accessibility of imaging examinations, and the development of endovascular techniques.
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Affiliation(s)
- Si Un Lee
- Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Korea.,Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Korea
| | - Tackeun Kim
- Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Korea.,Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Korea
| | - O-Ki Kwon
- Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Korea.,Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jae Seung Bang
- Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Korea.,Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Korea
| | - Seung Pil Ban
- Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Korea.,Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Korea
| | - Hyoung Soo Byoun
- Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Korea.,Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Korea
| | - Chang Wan Oh
- Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Korea.,Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Korea
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Intracranial Stenting as a Rescue Therapy for Acute Ischemic Stroke After Stentriever Thrombectomy Failure. World Neurosurg 2018; 120:e181-e187. [DOI: 10.1016/j.wneu.2018.08.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 07/31/2018] [Accepted: 08/02/2018] [Indexed: 11/19/2022]
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Wareham J, Flood R, Phan K, Crossley R, Mortimer A. A systematic review and meta-analysis of observational evidence for the use of bailout self-expandable stents following failed anterior circulation stroke thrombectomy. J Neurointerv Surg 2018; 11:675-682. [PMID: 30415225 DOI: 10.1136/neurintsurg-2018-014459] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 10/18/2018] [Accepted: 10/19/2018] [Indexed: 11/03/2022]
Abstract
BACKGROUND The crucial role of thrombectomy in the management of emergent large vessel occlusive stroke is not disputed but there is a technical failure rate in a significant minority of patients whose outcomes are often poor. Our objective was to perform a systematic review and meta-analysis to assess the safety and efficacy of permanent self-expandable stent deployment as a bailout procedure in cases of failed anterior circulation thrombectomy. METHODS Two independent reviewers searched the Pubmed (Medline) database for studies reporting outcomes following failed endovascular thrombectomy with subsequent rescue therapy employing self-expandable stents. RESULTS Eight studies (one prospective, seven retrospective) originating from Europe, Asia, and America comprising 160 patients met the inclusion criteria. Estimated baseline National Institutes of Health Stroke Scale score was 17.1 (95% CI 15.7 to 18.4). Following failed thrombetcomy and stent deployment, the rate of favorable outcome (modified Rankin Scale score 0-2) was 43% (95% CI 34% to 53%). Pooled mortality was 21% (95% CI 13% to 33%). Successful recanalization (Thrombolysis in Cerebral Infarction (TICI) 2b-3 or Thrombolysis in Myocardial Infarction (TIMI) 2-3) was 71% (95% CI 63% to 77%). Symptomatic intracerebral hemorrhage was seen in 12% (95% CI 7% to 18%). The Solitaire stent (Medtronic) was the most commonly deployed stent following failed thrombectomy attempts (66%; 95% CI 31% to 89%). Pre- or post-stent angioplasty was performed in 39%of patients (95% CI 29% to 48%). Glycoprotein IIb/IIIa inhibitors were used in 89% (95% CI 71% to 97%). 95% of patients received postprocedural antiplatelet therapy. CONCLUSION A rescue stent procedure seems reasonable as a last resort following failed thrombectomy but currently the level of evidence is limited. Prospective registries may aid in guiding future recommendations.
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Affiliation(s)
- James Wareham
- Department of Neuroradiology, Southmead Hospital, North Bristol NHS Trust, Bristol, UK
| | - Richard Flood
- Department of Neuroradiology, Southmead Hospital, North Bristol NHS Trust, Bristol, UK
| | - Kevin Phan
- NeuroSpine Surgery Research Group (NSURG), Neuro Spine Clinic, Sydney, New South Wales, Australia
| | - Robert Crossley
- Department of Neuroradiology, Southmead Hospital, North Bristol NHS Trust, Bristol, UK
| | - Alex Mortimer
- Department of Neuroradiology, Southmead Hospital, North Bristol NHS Trust, Bristol, UK
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Locked-in syndrome responding to thrombolytic therapy. Am J Emerg Med 2018; 36:1928.e5-1928.e7. [PMID: 29983216 DOI: 10.1016/j.ajem.2018.07.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 07/02/2018] [Indexed: 11/23/2022] Open
Abstract
Locked-in syndrome (LIS) is an exceedingly rare condition that has been described as a fate worse than death. Unfortunately, exam findings can be subtle and imaging is poorly sensitive, often leading to a delay in diagnosis. We present a case of a 70-year-old female who presented to our emergency department after developing respiratory distress followed by sudden unresponsiveness. She was diagnosed with LIS and had an immediate and remarkable improvement after administration of tissue plasminogen activator (TPA). Patients presenting with sudden onset altered mental status require a very careful physical exam, even if deemed comatose, and should be considered for emergent imaging for stroke. Fortunately, our patient recovered well and was discharged home in good condition.
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Nappini S, Limbucci N, Leone G, Rosi A, Renieri L, Consoli A, Laiso A, Valente I, Rosella F, Rosati R, Mangiafico S. Bail-out intracranial stenting with Solitaire AB device after unsuccessful thrombectomy in acute ischemic stroke of anterior circulation. J Neuroradiol 2018; 46:141-147. [PMID: 29920349 DOI: 10.1016/j.neurad.2018.05.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 04/26/2018] [Accepted: 05/25/2018] [Indexed: 01/11/2023]
Abstract
BACKGROUND Recent trials established the efficacy of mechanical stent-retriever thrombectomy for treatment of stroke patients with large vessel occlusion (LVO) in the anterior circulation. However, stent-retriever thrombectomy may not accomplish successful recanalization in all patients. The aim of this study is to report the role of bail-out permanent stenting after failure of mechanical thrombectomy. METHODS Among 430 patients included in a prospectively maintained database, we analysed 325 cases of anterior circulation LVO. Mechanical thrombectomy (mTICI 2b-3) was effective in 213/325 (65%) and failed in 112/325 (35%). Bail-out intracranial stenting was performed in 17/325 (5.2%) patients. In all cases a fully retrievable detachable stent was used (Solitaire AB, Medtronic). RESULTS No intraprocedural technical complications occurred. Successful reperfusion (mTICI 2b/3) was achieved in 12/17 patients (70.6%). Three (17.6%) patients died: one extensive infarction in the internal carotid artery territory, one large intracerebral haemorrhage, and one massive pulmonary embolism. Haemorrhagic conversion, both symptomatic and asymptomatic, occurred in 2/17 (11.7%). Good clinical outcome (mRS 0-2) at 3-months was achieved in 41.2% of patients. CONCLUSION Bail-out intracranial stenting after unsuccessful thrombectomy is technically feasible and the associated haemorrhagic risk seems acceptable in selected patients. We suggest that bail-out intracranial stenting, is safe and effective in selected patients with LVO stroke who failed to respond to thrombectomy.
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Affiliation(s)
- Sergio Nappini
- Neurovascular Interventional Unit, Careggi University Hospital, Florence. Largo P. Palagi, 1-50134 Florence, Italy.
| | - Nicola Limbucci
- Neurovascular Interventional Unit, Careggi University Hospital, Florence. Largo P. Palagi, 1-50134 Florence, Italy.
| | - Giuseppe Leone
- Department of Advanced Biomedical Sciences, Federico II University of Naples, Naples, Italy.
| | - Andrea Rosi
- Neurovascular Interventional Unit, Careggi University Hospital, Florence. Largo P. Palagi, 1-50134 Florence, Italy.
| | - Leonardo Renieri
- Neurovascular Interventional Unit, Careggi University Hospital, Florence. Largo P. Palagi, 1-50134 Florence, Italy.
| | - Arturo Consoli
- Neurovascular Interventional Unit, Careggi University Hospital, Florence. Largo P. Palagi, 1-50134 Florence, Italy.
| | - Antonio Laiso
- Neurovascular Interventional Unit, Careggi University Hospital, Florence. Largo P. Palagi, 1-50134 Florence, Italy.
| | - Iacopo Valente
- Department of Bioimaging and Radiological Sciences, Institute of Radiology, "A. Gemelli" Hospital-Catholic University, Rome, Italy.
| | - Francesco Rosella
- Department of Bioimaging and Radiological Sciences, Institute of Radiology, "A. Gemelli" Hospital-Catholic University, Rome, Italy.
| | - Riccardo Rosati
- Vascular and Interventional Radiology Unit, Department of Radiological, Oncological and Anatomo-pathological Sciences, Sapienza University of Rome, Rome, Italy.
| | - Salvatore Mangiafico
- Neurovascular Interventional Unit, Careggi University Hospital, Florence. Largo P. Palagi, 1-50134 Florence, Italy.
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Intracranial Stenting after Failure of Thrombectomy with the emboTrap ® Device. Clin Neuroradiol 2018; 29:677-683. [PMID: 29845367 PMCID: PMC6884426 DOI: 10.1007/s00062-018-0697-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 05/09/2018] [Indexed: 10/24/2022]
Abstract
BACKGROUND Approved alternatives in the guidelines for acute ischemic stroke patients who have failed intracranial thrombectomy are lacking. Primary permanent intracranial stenting was initially used in the era before thrombectomy and might still be a useful rescue treatment in acute stroke patients suffering from ongoing large vessel occlusion refractory to thrombectomy. METHODS The prospectively collected registry of patients with acute stroke caused by large vessel occlusions and treated with the emboTrap® device in Karolinska Hospital from October 2013 through March 2017 were retrospectively reviewed. Clinical outcome of non-recanalized patients with a thrombolysis in cerebral infarction (TICI) score of 0-1 after failed thrombectomy were compared with those who were treated with permanent intracranial stenting as rescue therapy. Favorable outcome was defined as modified Rankin scale 0-2. RESULTS The emboTrap® device was used in 201 patients. Persistent re-occlusions on withdrawal of the thrombectomy device were seen in 26 patients (13%) and of those, 12 individuals (46%) were treated with intracranial stenting. Baseline National Institutes of Health stroke scale (NIHSS), occlusion site, and onset-to-puncture time did not differ between the stenting group and the non-recanalized group. During the procedure half dose (5/12 patients) or full dose abciximab (6/12 patients), or aspirin (1/12 patient) was given intravenously immediately after stent placement. In 2 patients (17%) multiple stents were implanted. The stenting group had better functional outcomes at 3 months compared to the non-stenting group with 8/12 (66%) vs. 3/14 (21.4%, p < 0.05). Of the patients 5 (36%) in the non-stented group had died at 3 months follow-up, whereas mortality in the stenting cohort was 0% (p < 0.05) and no symptomatic intracranial hemorrhage (ICH) occurred in either group. CONCLUSION Intracranial stenting after failure of recanalization with thrombectomy led to a better rate of clinical outcome than leaving the patient non-recanalized. The required antiplatelet therapy, predominantly abciximab, did not lead to additional ICH.
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27
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Affiliation(s)
- Jens Fiehler
- From the Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Germany
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28
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Yang D, Lin M, Wang S, Wang H, Hao Y, Zi W, Lv P, Zheng D, Xiao G, Xu G, Xiong Y, Liu X. Primary angioplasty and stenting may be superior to thrombectomy for acute atherosclerotic large-artery occlusion. Interv Neuroradiol 2018; 24:412-420. [PMID: 29562864 DOI: 10.1177/1591019918763380] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Objective The objective of this article is to compare the effectiveness of primary angioplasty and/or stenting with stent retriever thrombectomy in acute anterior large-vessel occlusion due to atherosclerotic disease. Methods Patients were retrospectively reviewed from the endovascular treatment for acute anterior circulation ischemic stroke registry. Patients with large-vessel occlusions due to atherosclerosis were selected. We evaluated modified Rankin Scale (mRS) score at 90 days, modified thrombolysis in cerebral infarction (mTICI) score immediately post-procedure, and symptomatic and asymptomatic intracranial hemorrhage within 72 hours. Results Of 302 patients with acute anterior circulation occlusion due to atherosclerotic disease, 269 were treated with stent retriever thrombectomy as first-line therapy and 33 with angioplasty and/or stenting. Patients who received primary angioplasty treatment showed favorable independent outcome at 90 days (69.7% (23/33) vs 47.6% (128/269), p = 0.02) and lower rate of asymptomatic intracranial hemorrhage (9.1% (3/23) vs 30.5% (82/269), p = 0.01). Recanalization immediately post procedure did not differ (78.8%% (26/33) vs 86.2% (232/269), p = 0.29). Primary angioplasty therapy (OR, 0.27; 95% confidence interval (CI): 0.08-0.90; p = 0.03) and small baseline infarct (OR 0.36: 0.16-0.82; p = 0.02) were protective factors against poor functional outcome, while old age (OR 1.04:1.01-1.07; p = 0.006), severe neurological deficits (OR 3.76: 2.00-7.07; p < 0.001), and high glucose (OR 1.11: 1.01-1.23; p = 0.03) were associated with poor prognosis. Conclusions Patients with acute anterior circulation large-vessel occlusion due to atherosclerosis may benefit from urgent angioplasty and/or stenting as first-line therapy. Randomized controlled trials are warranted.
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Affiliation(s)
- Dong Yang
- 1 Department of Neurology, Jinling Hospital, Second Military Medical University, Nanjing, Jiangsu Province, China
| | - Min Lin
- 2 Department of Neurology, Fuzhou General Hospital of Nanjing Military Region, Fuzhou, Fujian Province, China
| | - Shuiping Wang
- 3 Department of Neurology, The 123rd Hospital of The People's Liberation Army, Bengbu, Anhui Province, China
| | - Huaiming Wang
- 1 Department of Neurology, Jinling Hospital, Second Military Medical University, Nanjing, Jiangsu Province, China.,4 Department of Neurology, The 89th Hospital of The People's Liberation Army, Weifang, Shandong Province, China
| | - Yonggang Hao
- 5 Department of Neurology, Jinling Hospital, Southern Medical University, Nanjing, Jiangsu Province, China.,6 Department of Emergency Medicine, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Wenjie Zi
- 7 Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu Province, China
| | - Penghua Lv
- 8 Department of Interventional Radiology, Northern Jiangsu People's Hospital, Yangzhou, Jiangsu Province, China
| | - Dequan Zheng
- 9 Department of Neurology, The 175th Hospital of The People's Liberation Army, The Affiliated Southeast Hospital of Xiamen University, Zhangzhou, Fujian Province, China
| | - Guodong Xiao
- 10 Department of Neurology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Gelin Xu
- 7 Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu Province, China
| | - Yunyun Xiong
- 7 Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu Province, China
| | - Xinfeng Liu
- 1 Department of Neurology, Jinling Hospital, Second Military Medical University, Nanjing, Jiangsu Province, China.,7 Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu Province, China
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Bhaskar S, Stanwell P, Cordato D, Attia J, Levi C. Reperfusion therapy in acute ischemic stroke: dawn of a new era? BMC Neurol 2018; 18:8. [PMID: 29338750 PMCID: PMC5771207 DOI: 10.1186/s12883-017-1007-y] [Citation(s) in RCA: 142] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 12/14/2017] [Indexed: 12/14/2022] Open
Abstract
Following the success of recent endovascular trials, endovascular therapy has emerged as an exciting addition to the arsenal of clinical management of patients with acute ischemic stroke (AIS). In this paper, we present an extensive overview of intravenous and endovascular reperfusion strategies, recent advances in AIS neurointervention, limitations of various treatment paradigms, and provide insights on imaging-guided reperfusion therapies. A roadmap for imaging guided reperfusion treatment workflow in AIS is also proposed. Both systemic thrombolysis and endovascular treatment have been incorporated into the standard of care in stroke therapy. Further research on advanced imaging-based approaches to select appropriate patients, may widen the time-window for patient selection and would contribute immensely to early thrombolytic strategies, better recanalization rates, and improved clinical outcomes.
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Affiliation(s)
- Sonu Bhaskar
- Western Sydney University (WSU), School of Medicine, South West Sydney Clinical School, Sydney, NSW 2170 Australia
- Liverpool Hospital, Department of Neurology & Neurophysiology, Liverpool, 2170 NSW Australia
- The Sydney Partnership for Health, Education, Research & Enterprise (SPHERE), Liverpool, NSW Australia
- Stroke & Neurology Research Group, Ingham Institute for Applied Medical Research, 1 Campbell Street, Liverpool, NSW 2170 Australia
- Department of Neurology, John Hunter Hospital, Newcastle, NSW Australia
- Priority Research Centre for Stroke & Brain Injury, Faculty of Health & Medicine, Hunter Medical Research institute (HMRI) and School of Medicine & Public Health, University of Newcastle, Newcastle, NSW Australia
| | - Peter Stanwell
- Priority Research Centre for Stroke & Brain Injury, Faculty of Health & Medicine, Hunter Medical Research institute (HMRI) and School of Medicine & Public Health, University of Newcastle, Newcastle, NSW Australia
| | - Dennis Cordato
- Liverpool Hospital, Department of Neurology & Neurophysiology, Liverpool, 2170 NSW Australia
- Stroke & Neurology Research Group, Ingham Institute for Applied Medical Research, 1 Campbell Street, Liverpool, NSW 2170 Australia
- School of Medicine, University of New South Wales (UNSW), Sydney, NSW Australia
| | - John Attia
- Priority Research Centre for Stroke & Brain Injury, Faculty of Health & Medicine, Hunter Medical Research institute (HMRI) and School of Medicine & Public Health, University of Newcastle, Newcastle, NSW Australia
- Centre for Clinical Epidemiology & Biostatistics, Hunter Medical Research Institute, University of Newcastle, Newcastle, NSW Australia
| | - Christopher Levi
- Western Sydney University (WSU), School of Medicine, South West Sydney Clinical School, Sydney, NSW 2170 Australia
- Liverpool Hospital, Department of Neurology & Neurophysiology, Liverpool, 2170 NSW Australia
- The Sydney Partnership for Health, Education, Research & Enterprise (SPHERE), Liverpool, NSW Australia
- Stroke & Neurology Research Group, Ingham Institute for Applied Medical Research, 1 Campbell Street, Liverpool, NSW 2170 Australia
- School of Medicine, University of New South Wales (UNSW), Sydney, NSW Australia
- Department of Neurology, John Hunter Hospital, Newcastle, NSW Australia
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Woo HG, Sunwoo L, Jung C, Kim BJ, Han MK, Bae HJ, Bae YJ, Choi BS, Kim JH. Feasibility of Permanent Stenting with Solitaire FR as a Rescue Treatment for the Reperfusion of Acute Intracranial Artery Occlusion. AJNR Am J Neuroradiol 2017; 39:331-336. [PMID: 29242362 DOI: 10.3174/ajnr.a5477] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Accepted: 10/04/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The Solitaire FR can be used not only as a tool for mechanical thrombectomy but also as a detachable permanent stent. Our aim was to assess the feasibility and safety of permanent stent placement with the Solitaire FR compared with other self-expanding stents for intracranial artery recanalization for acute ischemic stroke. MATERIALS AND METHODS From January 2011 through January 2016, we retrospectively selected 2979 patients with acute ischemic stroke. Among them, 27 patients who underwent permanent stent placement (13 patients with the Solitaire FR [Solitaire group] and 14 patients with other self-expanding stents [other stent group]) were enrolled. The postprocedural modified TICI grade and angiographic and clinical outcomes were assessed. The safety and efficacy of permanent stent placement of the Solitaire FR for acute large-artery occlusion were evaluated. RESULTS Stent placement was successful in all cases. Modified TICI 2b-3 reperfusion was noted in 84.6% of the Solitaire group and in 78.6% of the other stent group. Procedural time was significantly shorter in the Solitaire group than in the other stent group (P = .022). Shorter procedural time was correlated with favorable outcome (ρ = 0.46, P = .035). No significant differences were found in the modified TICI grade, NIHSS score, mRS, and hemorrhagic transformation rate between the 2 groups. The acute in-stent thrombosis rate at discharge was significantly lower when a glycoprotein IIb/IIIa inhibitor was injected during the procedure (P = .013). CONCLUSIONS Permanent stent placement with the Solitaire FR compared with other self-expanding stents appears to be feasible and safe as a rescue tool for refractory intra-arterial therapy.
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Affiliation(s)
- H G Woo
- From the Departments of Radiology (H.G.W., L.S., C.J., Y.J.B., B.S.C., J.H.K.)
| | - L Sunwoo
- From the Departments of Radiology (H.G.W., L.S., C.J., Y.J.B., B.S.C., J.H.K.)
| | - C Jung
- From the Departments of Radiology (H.G.W., L.S., C.J., Y.J.B., B.S.C., J.H.K.)
| | - B J Kim
- Neurology (B.J.K., M.-K.H., H.-J.B.), Seoul National University Bundang Hospital, Bundang, Seongnam, Korea
| | - M-K Han
- Neurology (B.J.K., M.-K.H., H.-J.B.), Seoul National University Bundang Hospital, Bundang, Seongnam, Korea
| | - H-J Bae
- Neurology (B.J.K., M.-K.H., H.-J.B.), Seoul National University Bundang Hospital, Bundang, Seongnam, Korea
| | - Y J Bae
- From the Departments of Radiology (H.G.W., L.S., C.J., Y.J.B., B.S.C., J.H.K.)
| | - B S Choi
- From the Departments of Radiology (H.G.W., L.S., C.J., Y.J.B., B.S.C., J.H.K.)
| | - J H Kim
- From the Departments of Radiology (H.G.W., L.S., C.J., Y.J.B., B.S.C., J.H.K.)
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Han H, Choi H, Cho KT, Kim BC. Mechanical Thrombectomy with Solitaire Stent Retrieval for Acute Cardioembolic Stroke. J Korean Neurosurg Soc 2017; 60:627-634. [PMID: 29142621 PMCID: PMC5678064 DOI: 10.3340/jkns.2016.0707.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 11/22/2016] [Accepted: 03/27/2017] [Indexed: 11/27/2022] Open
Abstract
Objective Few studies have reported the outcome of mechanical thrombectomy with Solitaire stent retrival (MTSR) in subtypes of acute ischemic stroke. The purpose of this study was to evaluate the efficacy and result of MTSR in acute cardioembolic stroke. Methods Twenty consecutive patients with acute cardioembolic stroke were treated by MTSR. The angiographic outcome was assessed by thrombolysis in cerebral infarction (TICI) grade. TICI grade 2a, 2b, or 3 with a measurable thrombus that was retrieved was considered as a success when MTSR was performed in the site of primary vessel occlusion, and TICI grade 2b or 3 was considered as a success when final result was reported. Clinical and radiological results were compared between two groups divided on the basis of final results of MTSR. Persistent thrombus compression sign on angiogram was defined as a stenotic, tapered arterial lumen whenever temporary stenting was performed. The clinical outcomes were assessed by the modified Rankin Scale (mRS) at 3 months. Results The failure rate of MTSR was 20% (4/20) and other modalities, such as permanent stenting, were needed. Final successful recanalization (TICI grade 2b or 3) was 80% when other treatments were included. The rate of good outcome (mRS≤2) was 35% at the 3-month follow-up. Failure of MTSR was significantly correlated with persistent thrombus compression sign (p=0.001). Conclusion Some cases of cardioembolic stroke are resistant to MTSR and may need other treatment modalities. Careful interpretation of angiogram may be helpful to the decision.
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Affiliation(s)
- Hokyun Han
- Department of Neurosurgery, Dongguk University Ilsan Hospital, Goyang, Korea
| | - Hyunho Choi
- Department of Neurosurgery, Dongguk University Ilsan Hospital, Goyang, Korea
| | - Keun-Tae Cho
- Department of Neurosurgery, Dongguk University Ilsan Hospital, Goyang, Korea.,Department of Neurosurgery, Dongguk University College of Medicine, Seoul, Korea
| | - Byong-Cheol Kim
- Department of Neurosurgery, Dongguk University Ilsan Hospital, Goyang, Korea.,Department of Neurosurgery, Dongguk University College of Medicine, Seoul, Korea
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Nappini S, Limbucci N, Leone G, Laiso A, Wlderk A, Mangiafico S. Trans-Anterior Communicating Artery Primary Stenting in Acute Tandem Middle Cerebral Artery–Internal Carotid Artery Occlusion Due to Thoracic Aortic Stent Graft. World Neurosurg 2017; 106:1050.e21-1050.e24. [DOI: 10.1016/j.wneu.2017.06.187] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 06/28/2017] [Accepted: 06/30/2017] [Indexed: 11/25/2022]
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Baracchini C, Farina F, Soso M, Viaro F, Favaretto S, Palmieri A, Kulyk C, Ballotta E, Nico L, Cester G, Causin F. Stentriever Thrombectomy Failure: A Challenge in Stroke Management. World Neurosurg 2017; 103:57-64. [DOI: 10.1016/j.wneu.2017.03.070] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 03/15/2017] [Accepted: 03/16/2017] [Indexed: 11/29/2022]
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Kim BM. Causes and Solutions of Endovascular Treatment Failure. J Stroke 2017; 19:131-142. [PMID: 28592777 PMCID: PMC5466284 DOI: 10.5853/jos.2017.00283] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 03/22/2017] [Accepted: 04/18/2017] [Indexed: 01/11/2023] Open
Abstract
In a meta-analysis of individual patient data from 5 randomized controlled trials, endovascular treatment (EVT) mainly using a stent retriever achieved successful recanalization in 71.1% of patients suffering from acute stroke due to anterior circulation large artery occlusion (LAO). However, EVT still failed in 28.9% of LAO cases in those 5 successful trials. Stent retriever failure may occur due to anatomical challenges (e.g., a tortuous arterial tree from the aortic arch to a target occlusion site), a large quantity of clots, tandem occlusion, clot characteristics (fresh versus organized clots), different pathomechanisms (embolic versus non-embolic occlusion), etc. Given that recanalization success is the most important factor in the neurological outcome of acute stroke patients, it is important to seek solutions for such difficult cases. In this review, the basic technique of EVT is briefly summarized and then various difficult cases with diverse conditions are discussed along with suggested solutions.
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Affiliation(s)
- Byung Moon Kim
- Interventional Neuroradiology Severance Hospital Stroke Center, Department of Radiology, Yonsei University College of Medicine, Seoul, Korea
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Delgado Acosta F, Jiménez Gómez E, Bravo Rey I, Bravo Rodríguez F, Ochoa Sepúlveda J, Oteros Fernández R. Intracranial stents in the endovascular treatment of acute ischemic stroke. RADIOLOGIA 2017. [DOI: 10.1016/j.rxeng.2017.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Delgado Acosta F, Jiménez Gómez E, Bravo Rey I, Bravo Rodríguez F, Ochoa Sepúlveda J, Oteros Fernández R. Uso del stent intracraneal en el tratamiento endovascular en agudo del ictus. RADIOLOGIA 2017; 59:218-225. [DOI: 10.1016/j.rx.2017.01.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Revised: 01/27/2017] [Accepted: 01/30/2017] [Indexed: 11/26/2022]
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Rahme RJ, Bendok BR. Is Intravenous Tissue Plasminogen Activator Still Relevant for Mechanical Embolectomy Stroke Candidates? World Neurosurg 2016; 98:833-834. [PMID: 28024973 DOI: 10.1016/j.wneu.2016.12.083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Rudy J Rahme
- Department of Neurological Surgery, Northwestern Medicine and McGaw Medical Center, Chicago, Illinois, USA
| | - Bernard R Bendok
- Department of Neurological Surgery, Otolaryngology, and Radiology, Mayo Clinic, Phoenix, Arizona, USA
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Al Kasab S, Almadidy Z, Spiotta AM, Turk AS, Chaudry MI, Hungerford JP, Turner RD. Endovascular treatment for AIS with underlying ICAD. J Neurointerv Surg 2016; 9:948-951. [DOI: 10.1136/neurintsurg-2016-012529] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 07/12/2016] [Accepted: 07/19/2016] [Indexed: 11/04/2022]
Abstract
BackgroundAcute large vessel occlusion (LVO) can result from thromboemboli or underlying intracranial atherosclerotic disease (ICAD). Although the technique for revascularization differs significantly for these two lesions (simple thrombectomy for thromboemboli and balloon angioplasty and stenting for ICAD), the underlying etiology is often unknown in acute ischemic stroke (AIS).ObjectiveTo evaluate whether procedural complications, revascularization rates, and functional outcomes differ among patients with LVO from ICAD or thromboembolism.MethodsA retrospective review of thrombectomy cases from 2008 to 2015 was carried out for cases of AIS due to underlying ICAD. Thirty-six patients were identified. A chart and imaging review was performed to determine revascularization rates, periprocedural complications, and functional outcomes. Patients with ICAD and acute LVO were compared with those with underlying thromboemboli.ResultsAmong patients with ICAD and LVO, mean National Institutes of Health Stroke Scale (NIHSS) score on admission was 12.9±8.5, revascularization (Thrombolysis In Cerebral Infarction, TICI ≥2b) was achieved in 22/34 (64.7%) patients, 11% had postprocedural intracerebral hemorrhage (PH2), and 14/33 (42.4%) had achieved a modified Rankin Scale (mRS) score of 0–2 at the 3-month follow-up. Compared with patients without underlying ICAD, there was no difference in NIHSS on presentation, or in the postprocedural complication rate. However, procedure times for ICAD were longer (98.5±59.8 vs 37.1±34.2 min), there was significant difference in successful revascularization rate between the groups (p=0.001), and a trend towards difference in functional outcome at 3 months (p=0.07).ConclusionsDespite AIS with underlying ICAD requiring a more complex, technically demanding recanalization strategy than traditional thromboembolic AIS, it appears safe, and good outcomes are obtainable.
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Baek JH, Kim BM, Kim DJ, Heo JH, Nam HS, Yoo J. Stenting as a Rescue Treatment After Failure of Mechanical Thrombectomy for Anterior Circulation Large Artery Occlusion. Stroke 2016; 47:2360-3. [PMID: 27444259 DOI: 10.1161/strokeaha.116.014073] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 06/21/2016] [Indexed: 01/11/2023]
Abstract
BACKGROUND AND PURPOSE We hypothesized that permanent stenting may be a rescue treatment for stentriever-failed anterior circulation large artery occlusion. We compared the outcomes among patients with permanent stenting and those without stenting after stentriever failure. METHODS We retrospectively evaluated 208 patients who underwent stentriever thrombectomy for anterior circulation large artery occlusion between September 2010 and September 2015. Modified thrombolysis in cerebral ischemia 2b-3 recanalization was achieved with stentriever alone or in combination with Penumbra device in 155 patients (74.5%). An additional 8 patients (3.8%) obtained modified thrombolysis in cerebral ischemia 2b-3 with urokinase or glycoprotein IIb/IIIa inhibitor infusion. Of the remaining 45 patients (21.6%), 17 underwent stenting (stenting group; mean age, 68 years), whereas 28 did not undergo stenting (nonstenting group; mean age, 72 years). The rate of modified thrombolysis in cerebral ischemia 2b-3 in stenting group was assessed, and clinical outcomes were compared between groups. RESULTS There were no differences in clinical and laboratory findings, initial National Institute of Health Stroke Scale score, location of anterior circulation large artery occlusion, and onset-to-puncture time between groups. Modified thrombolysis in cerebral ischemia 2b-3 was achieved in 14 members (83.3%) of the stenting group. Stenting group had more favorable outcomes (modified Rankin Scale score 0-2, 35.3%) and less cerebral herniation (11.8%) than nonstenting group (modified Rankin Scale score 0-2, 7.1%; cerebral herniation, 42.9%; P<0.05 for both). Symptomatic intracranial hemorrhage and mortality rates did not differ between stenting group (symptomatic intracranial hemorrhage, 11.8%; mortality, 23.5%) and nonstenting group (symptomatic intracranial hemorrhage, 14.3%; mortality, 39.3%). CONCLUSIONS Permanent stenting may be a rescue modality for stentriever-failed anterior circulation large artery occlusion. A large prospective study is necessary for confirmation because of the small sample size of this study.
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Affiliation(s)
- Jang-Hyun Baek
- From the Department of Neurology, National Medical Center, Seoul, South Korea (J.-H.B.); and Department of Radiology (B.M.K., D.J.K.) and Department of Neurology (J.H.H., H.S.N., J.Y.), Severance Hospital Stroke Center, Yonsei University College of Medicine, Seoul, South Korea
| | - Byung Moon Kim
- From the Department of Neurology, National Medical Center, Seoul, South Korea (J.-H.B.); and Department of Radiology (B.M.K., D.J.K.) and Department of Neurology (J.H.H., H.S.N., J.Y.), Severance Hospital Stroke Center, Yonsei University College of Medicine, Seoul, South Korea.
| | - Dong Joon Kim
- From the Department of Neurology, National Medical Center, Seoul, South Korea (J.-H.B.); and Department of Radiology (B.M.K., D.J.K.) and Department of Neurology (J.H.H., H.S.N., J.Y.), Severance Hospital Stroke Center, Yonsei University College of Medicine, Seoul, South Korea
| | - Ji Hoe Heo
- From the Department of Neurology, National Medical Center, Seoul, South Korea (J.-H.B.); and Department of Radiology (B.M.K., D.J.K.) and Department of Neurology (J.H.H., H.S.N., J.Y.), Severance Hospital Stroke Center, Yonsei University College of Medicine, Seoul, South Korea
| | - Hyo Suk Nam
- From the Department of Neurology, National Medical Center, Seoul, South Korea (J.-H.B.); and Department of Radiology (B.M.K., D.J.K.) and Department of Neurology (J.H.H., H.S.N., J.Y.), Severance Hospital Stroke Center, Yonsei University College of Medicine, Seoul, South Korea
| | - Joonsang Yoo
- From the Department of Neurology, National Medical Center, Seoul, South Korea (J.-H.B.); and Department of Radiology (B.M.K., D.J.K.) and Department of Neurology (J.H.H., H.S.N., J.Y.), Severance Hospital Stroke Center, Yonsei University College of Medicine, Seoul, South Korea
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Möhlenbruch MA, Bendszus M. [Technical standards for the interventional treatment of acute ischemic stroke]. DER NERVENARZT 2016; 86:1209-16. [PMID: 26334350 DOI: 10.1007/s00115-015-4268-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Acute ischemic stroke is the leading cause of acquired disability and its treatment is still a major challenge. For more than a decade, various mechanical devices have been developed for the recanalization of proximal artery occlusions in acute ischemic stroke but most of them have been approved for clinical use, only on the basis of uncontrolled case series. Intravenous thrombolysis with recombinant tissue-specific plasminogen activator administered (iv rtPA) within 4.5 h of symptom onset is so far the only approved medicinal treatment in the acute phase of cerebral infarction. With the introduction of stent retrievers, mechanical thrombectomy has demonstrated substantial rates of partial or complete arterial recanalization and improved outcomes compared with iv rtPA and best medical treatment alone in multiple randomized clinical trials in select patients with acute ischemic stroke and proximal artery occlusions. This review discusses the evolution of endovascular stroke therapy followed by a discussion of the current technical standards of mechanical thrombectomy that have to be considered during endovascular stroke therapy and the updated treatment recommendations of the ESO Karolinska stroke update.
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Affiliation(s)
- M A Möhlenbruch
- Abt. Neuroradiologie, Neurologische Klinik, Universität Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Deutschland.
| | - M Bendszus
- Abt. Neuroradiologie, Neurologische Klinik, Universität Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Deutschland
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Seo WK, Oh K, Suh SI, Seol HY. Intracranial Stenting as a Rescue Therapy in Patients with Stroke-in-Evolution. J Stroke Cerebrovasc Dis 2016; 25:1411-6. [DOI: 10.1016/j.jstrokecerebrovasdis.2016.01.054] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Revised: 01/10/2016] [Accepted: 01/31/2016] [Indexed: 10/22/2022] Open
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Asadi H, Williams D, Thornton J. Changing Management of Acute Ischaemic Stroke: the New Treatments and Emerging Role of Endovascular Therapy. Curr Treat Options Neurol 2016; 18:20. [PMID: 27017832 DOI: 10.1007/s11940-016-0403-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OPINION STATEMENT Urgent reperfusion of the ischaemic brain is the aim of stroke treatment, and the last two decades have seen a rapid advancement in the medical and endovascular treatment of acute ischaemic stroke. Intravenous tissue plasminogen activator (tPA) was first introduced as a safe and effective thrombolytic agent followed by the introduction of newer thrombolytic agents as well as anticoagulant and antiplatelet agents, proposed as potentially safer drugs with more favourable interaction profiles. In addition to chemo-thrombolysis, other techniques including transcranial sonothrombolysis and microbubble cavitation have been introduced which are showing promising results, but await large-scale clinical trials. These developments in medical therapies which are undoubtedly of great importance due to their potential widespread and immediate availability are paralleled with gradual but steady improvements in endovascular recanalisation techniques which were initiated by the introduction of the MERCI (Mechanical Embolus Removal in Cerebral Ischemia) and Penumbra systems. The introduction of the Solitaire device was a significant achievement in reliable and safe endovascular recanalisation and was followed by further innovative stent retrievers. Initial trials failed to show a solid benefit in endovascular intervention compared with IV-tPA alone. These counterintuitive results did not last long, however, when a series of very well-designed randomised controlled trials, pioneered by MR-CLEAN, EXTEND-IA and ESCAPE, emerged, confirming the well-believed daily anecdotal evidence. There have now been seven positive trials of endovascular treatment for acute ischaemic stroke. Now that level I evidence regarding the superiority of endovascular recanalisation is abundantly available, the clinical challenge is how to select patients suitable for intervention and to familiarise and educate stroke care providers with this recent development in stroke care. It is important for the interventional services to be provided only in comprehensive stroke centres and endovascular interventions attempted by experienced well-trained operators, at this stage as an adjunct to the established medical treatment of IV-tPA, if there are no contraindications.
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Affiliation(s)
- Hamed Asadi
- Neuroradiology and Neurointerventional Service, Department of Radiology, Beaumont Hospital, Beaumont Rd, Beaumont, Dublin, Ireland. .,School of Medicine, Faculty of Health, Deakin University, Pigdons Road, Waurn Ponds, VIC, 3216, Australia. .,Interventional Radiology Service, Department of Radiology, Beaumont Hospital, Beaumont Rd, Beaumont, Dublin, Ireland.
| | - David Williams
- Department of Geriatric and Stroke Medicine, Royal College of Surgeons in Ireland and Beaumont Hospital, Beaumont Rd, Beaumont, Dublin, Ireland
| | - John Thornton
- Neuroradiology and Neurointerventional Service, Department of Radiology, Beaumont Hospital, Beaumont Rd, Beaumont, Dublin, Ireland
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Munich SA, Mokin M, Snyder KV, Siddiqui AH, Hopkins LN, Levy EI. Guest Editorial: An Update on Stroke Intervention. Neurosurgery 2016; 77:313-20. [PMID: 26080070 DOI: 10.1227/neu.0000000000000828] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Endovascular treatment for acute ischemic stroke has changed remarkably over the past decade. Beginning with IA thrombolytic administration, endovascular strategies have evolved to include aspiration, self-expanding intracranial stents, and now retrievable stents. With the recent publication of 5 randomized, controlled studies (MR CLEAN, EXTEND-IA, ESCAPE, SWIFT PRIME, and REVASCAT), mechanical thrombectomy, when used in combination with IV tPA, has demonstrated a significant radiographic and clinical benefit over traditional strategies with IV tPA alone. These results have placed endovascular therapy at the forefront of stroke treatment, redefining the standard of care.
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Affiliation(s)
- Stephan A Munich
- *Department of Neurosurgery, School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York; ‡Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo, New York; §Departments of Neurology and Neurosurgery, University of South Florida College of Medicine, Tampa, Florida; ¶Department of Radiology, School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York; ‖Department of Neurology, School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York; #Toshiba Stroke and Vascular Research Center, University at Buffalo, State University of New York; **Jacobs Institute, Buffalo, New York
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Mordasini P, Gralla J. Developments in mechanical thrombectomy devices for the treatment of acute ischemic stroke. Expert Rev Med Devices 2016; 13:71-81. [DOI: 10.1586/17434440.2015.1124019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Sonig A, Krishna C, Natarajan SK, Liu J, Hopkins LN, Snyder KV, Levy EI, Siddiqui AH. Stent Retriever-Assisted Mechanical Thrombectomy for Acute Basilar Artery Occlusion: Single US Institution Experience. Oper Neurosurg (Hagerstown) 2015; 12:250-259. [DOI: 10.1227/neu.0000000000001163] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 10/18/2015] [Indexed: 11/19/2022] Open
Abstract
Abstract
BACKGROUND
Acute basilar artery occlusion causes devastating strokes that carry high mortality and morbidity.
OBJECTIVE
To report the outcomes of mechanical thrombectomy in the posterior circulation with a focus on safety and efficacy of stent retrievers.
METHODS
We retrospectively reviewed our endovascular database for all patients treated with stent retrievers for posterior circulation stroke between June 2012 and June 2014. Twelve patients were identified. The following data were analyzed: thrombus location, previous stroke or transient ischemic attack, thrombus etiology, comorbidities, time from presentation to initiation of endovascular treatment, time from start of angiography to revascularization, and whether intravenous tissue plasminogen activator was administered pre-thrombectomy. Outcome was considered poor when modified Rankin Scale score was >2.
RESULTS
Mean patient age was 63.42 years (median, 64.5; range, 28-83 years); 7 were women. Successful recanalization (Thrombolysis in Cerebral Infarction grade 2b or 3) was achieved in 11 of 12 patients (91.7%). Mean discharge modified Rankin Scale score was 2.3 (median, 2.0; standard deviation 1.96; range, 0-6), with a favorable discharge outcome in 9 of 12 (75%) patients. Two patients died as inpatients. Mean follow-up modified Rankin Scale score was 1.4 (median, 1.00; standard deviation 1.075; range, 0-4). Good outcome was achieved in 9 of 10 (90%) patients at last follow-up (mean follow-up duration, 132.42 days [median, 90.50; standard deviation 80.2; range, 8-378 days]).
CONCLUSION
Our single-institution study has shown that good clinical outcomes and successful recanalization with acceptable mortality can be achieved with current stent retrievers.
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Affiliation(s)
- Ashish Sonig
- Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York
- Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo, New York
| | - Chandan Krishna
- Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York
- Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo, New York
| | - Sabareesh K Natarajan
- Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York
- Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo, New York
| | - Jian Liu
- Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York
- Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo, New York
| | - L Nelson Hopkins
- Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York
- Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo, New York
- Department of Radiology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York
- Toshiba Stroke and Vascular Research Center, University at Buffalo, State University of New York
- Jacobs Institute, Buffalo, New York
| | - Kenneth V Snyder
- Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York
- Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo, New York
- Department of Radiology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York
- Toshiba Stroke and Vascular Research Center, University at Buffalo, State University of New York
- Department of Neurology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York
| | - Elad I Levy
- Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York
- Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo, New York
- Department of Radiology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York
- Toshiba Stroke and Vascular Research Center, University at Buffalo, State University of New York
| | - Adnan H Siddiqui
- Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York
- Department of Neurosurgery, Gates Vascular Institute at Kaleida Health, Buffalo, New York
- Department of Radiology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York
- Toshiba Stroke and Vascular Research Center, University at Buffalo, State University of New York
- Jacobs Institute, Buffalo, New York
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Zhang Y, Jin M, Du B, Lin H, Xu C, Jiang W, Jia J. A Novel Canine Model of Acute Vertebral Artery Occlusion. PLoS One 2015; 10:e0142251. [PMID: 26545253 PMCID: PMC4636284 DOI: 10.1371/journal.pone.0142251] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 10/20/2015] [Indexed: 11/24/2022] Open
Abstract
Background The extended time window and theoretic reduction in hemorrhage make mechanical strategies an attractive approach for the treatment of patients with ischemic stroke. However, a limited availability of suitable animal models of cerebrovascular thrombosis has hampered the study of novel endovascular interventions. The aim of the present study was to develop a new technique for site-specific placement of a thrombus in a canine model that would allow for the evaluation of mechanical thrombectomy and clot retrieval methods and the visualization of thrombus dislocation or fragmentation during angiographic manipulation. Methods Angiography and embolization with a preformed thrombus were performed in 12 canines. Under fluoroscopic guidance, an embolism protection device (EPD) was anchored to the middle segment of the left vertebral artery (VA) via the left femoral arterial sheath. A preformed radiopaque clot was injected through the guide catheter into the left VA, via the contralateral femoral artery, proximal to the EPD. After 15 min of occlusion, the EPD was removed and persistent occlusion of the VA was documented angiographically. Results Angiography performed during the observation period confirmed the persistence of VA occlusion in each case, and displacement of the radiopaque clots did not occur during the 3-hour observation period. The technique allowed selective embolization of targeted vessels without thrombus fragmentation. Conclusion This study demonstrates, for the first time, a canine model of post-circulation embolism induced by autologous blood clot placement. This model can be rapidly formed and easily operated, and the site of thrombosis can be readily controlled.
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Affiliation(s)
- Yunfeng Zhang
- Department of Neurology, Xuan Wu Hospital, Capital Medical University, Beijing, China
- Department of Neurology, Affiliated Hospital of Nantong University, Nantong, China
| | - Min Jin
- The Second Artillery General Hospital of Chinese People’s Liberation Army, Beijing, China
| | - Bin Du
- The Second Artillery General Hospital of Chinese People’s Liberation Army, Beijing, China
| | - Hao Lin
- The Second Artillery General Hospital of Chinese People’s Liberation Army, Beijing, China
| | - Chengyong Xu
- The Second Artillery General Hospital of Chinese People’s Liberation Army, Beijing, China
| | - Weijian Jiang
- The Second Artillery General Hospital of Chinese People’s Liberation Army, Beijing, China
| | - Jianping Jia
- Department of Neurology, Xuan Wu Hospital, Capital Medical University, Beijing, China
- * E-mail:
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Amar AP, Griffin JH, Zlokovic BV. Combined neurothrombectomy or thrombolysis with adjunctive delivery of 3K3A-activated protein C in acute ischemic stroke. Front Cell Neurosci 2015; 9:344. [PMID: 26388732 PMCID: PMC4556986 DOI: 10.3389/fncel.2015.00344] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 08/18/2015] [Indexed: 01/19/2023] Open
Abstract
In the treatment of acute ischemic stroke (AIS), vessel recanalization correlates with improved functional status and reduced mortality. Mechanical neurothrombectomy achieves a higher likelihood of revascularization than intravenous thrombolysis (IVT), but there remains significant discrepancy between rates of recanalization and rates of favorable outcome. The poor neurological recovery among some stroke patients despite successful recanalization confirms the need for adjuvant therapy, such as pharmacological neuroprotection. Prior clinical trials of neuroprotectant drugs failed perhaps due to inability of the agent to reach the ischemic tissue beyond the occluded artery. A protocol that couples mechanical neurothrombectomy with concurrent delivery of a neuroprotectant overcomes this pitfall. Activated protein C (APC) exerts pleiotropic anti-inflammatory, anti-apoptotic, antithrombotic, cytoprotective, and neuroregenerative effects in stroke and appears a compelling candidate for this novel approach.
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Affiliation(s)
- Arun Paul Amar
- Department of Neurosurgery, Keck School of Medicine of the University of Southern California, University of Southern California Los Angeles, CA, USA
| | - John H Griffin
- Department of Molecular and Experimental Medicine, Scripps Research Institute La Jolla, CA, USA ; Department of Medicine, Division of Hematology/Oncology, University of California, San Diego San Diego, CA, USA
| | - Berislav V Zlokovic
- Zilkha Neurogenetic Institute, Keck School of Medicine of the University of Southern California, University of Southern California Los Angeles, CA, USA
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Asadi H, Dowling R, Yan B, Wong S, Mitchell P. Advances in endovascular treatment of acute ischaemic stroke. Intern Med J 2015; 45:798-805. [DOI: 10.1111/imj.12652] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Accepted: 11/19/2014] [Indexed: 11/27/2022]
Affiliation(s)
- H. Asadi
- Melbourne Brain Centre; Department of Medicine; Royal Melbourne Hospital; University of Melbourne; Melbourne Victoria Australia
| | - R. Dowling
- Melbourne Brain Centre; Department of Medicine; Royal Melbourne Hospital; University of Melbourne; Melbourne Victoria Australia
| | - B. Yan
- Melbourne Brain Centre; Department of Medicine; Royal Melbourne Hospital; University of Melbourne; Melbourne Victoria Australia
| | - S. Wong
- Radiology Department; Western Hospital; Melbourne Victoria Australia
| | - P. Mitchell
- Melbourne Brain Centre; Department of Medicine; Royal Melbourne Hospital; University of Melbourne; Melbourne Victoria Australia
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