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Zaidat OO, Ikeme S, Sheth SA, Yoshimura S, Yang XG, Brinjikji W, Kallmes DF, Brouwer P, Pederson J, Tarchand R, Steffenson A, Kallmes KM, Touchette J, Andersson T. MASTRO I: Meta-Analysis and Systematic Review of thrombectomy stent retriever outcomes: comparing functional, safety and recanalization outcomes between EmboTrap, Solitaire and Trevo in acute ischemic stroke. J Comp Eff Res 2023; 12:e230001. [PMID: 37039285 PMCID: PMC10402757 DOI: 10.57264/cer-2023-0001] [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: 01/03/2023] [Accepted: 03/02/2023] [Indexed: 04/12/2023] Open
Abstract
Aim: Stent-retriever (SR) thrombectomy has demonstrated superior outcomes in patients with acute ischemic stroke compared with medical management alone, but differences among SRs remain unexplored. We conducted a Systematic Review/Meta-Analysis to compare outcomes between three SRs: EmboTrap®, Solitaire™, and Trevo®. Methods: We conducted a PRISMA-compliant Systematic Review among English-language studies published after 2014 in PubMed/MEDLINE that reported SRs in ≥25 patients. Functional and safety outcomes included 90-day modified Rankin scale (mRS 0-2), mortality, symptomatic intracranial hemorrhage (sICH), and embolization to new territory (ENT). Recanalization outcomes included modified thrombolysis in cerebral infarction (mTICI) and first-pass recanalization (FPR). We used a random effects Meta-Analysis to compare outcomes; subgroup and outlier-influencer analysis were performed to explore heterogeneity. Results: Fifty-one articles comprising 9,804 patients were included. EmboTrap had statistically significantly higher rates of mRS 0-2 (57.4%) compared with Trevo (50.0%, p = 0.013) and Solitaire (45.3%, p < 0.001). Compared with Solitaire (20.4%), EmboTrap (11.2%, p < 0.001) and Trevo (14.5%, p = 0.018) had statistically significantly lower mortality. Compared with Solitaire (7.7%), EmboTrap (3.9%, p = 0.028) and Trevo (4.6%, p = 0.049) had statistically significantly lower rates of sICH. There were no significant differences in ENT rates across all three devices (6.0% for EmboTrap, 5.3% for Trevo, and 7.7% for Solitaire, p = 0.518). EmboTrap had numerically higher rates of recanalization; however, no statistically significant differences were found. Conclusion: The results of our Systematic Review/Meta-Analysis suggest that EmboTrap may be associated with significantly improved functional outcomes compared with Solitaire and Trevo. EmboTrap and Trevo may be associated with significantly lower rates of sICH and mortality compared with Solitaire. No significant differences in recanalization and ENT rates were found. These conclusions are tempered by limitations of the analysis including variations in thrombectomy techniques in the field, highlighting the need for multi-arm RCT studies comparing different SR devices to confirm our findings.
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Affiliation(s)
| | - Shelly Ikeme
- Cardiovascular & Specialty Solutions Group, CERENOVUS, Irvine, CA 92618, USA
| | - Sunil A Sheth
- Department of Neurology, UTHealth McGovern Medical School, Houston, TX 77030, USA
| | - Shinichi Yoshimura
- Department of Neurosurgery, Hyogo College of Medicine, Hyogo, 663-8131, Japan
| | - Xin-guang Yang
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong Province, 510123, China
| | | | - David F Kallmes
- Department of Radiology, Mayo Clinic, Rochester, MN 55902, USA
| | - Patrick Brouwer
- Cardiovascular & Specialty Solutions Group, CERENOVUS, Irvine, CA 92618, USA
| | | | | | | | - Kevin M Kallmes
- Superior Medical Experts, St. Paul, MN 55117, USA
- Nested Knowledge, Inc., St. Paul, MN 55117, USA
| | | | - Tommy Andersson
- Medical Imaging, AZ Groeninge, 8500, Kortrijk, Belgium
- Neuroradiology, Karolinska University Hospital & Clinical Neuroscience Karolinska Institute, 171 77, Stockholm, Sweden
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Hu HZ, Qiu J, Li W, Nguyen TN, Wang F, Li D, Shi HZ, Wang SC, Wei M, Chen HS. Rescue thrombolysis for medium vessel occlusion (RESCUE-TNK): Rationale and design of a phase 2 randomized trial. Front Neurol 2023; 14:1154736. [PMID: 37051058 PMCID: PMC10084791 DOI: 10.3389/fneur.2023.1154736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 03/10/2023] [Indexed: 03/29/2023] Open
Abstract
BackgroundThe best reperfusion strategy for medium-sized vessel occlusion (MeVO) is not well established. Given the proven treatment effect of intra-arterial thrombolysis in patients with large vessel occlusion (LVO), we hypothesized that intra-arterial tenecteplase (TNK) could increase the recanalization rate of MeVO and thus improve clinical outcome.AimsTo explore the safety and efficacy of intra-arterial TNK in patients with MeVO.Sample size estimatesA maximum of 80 patients are required to test the superiority hypothesis, using power = 80% and α = 0.025 to conduct the one-sided test.DesignRescue treatment for mEdium veSsel oCclUsion by intra-artErial TNK (RESCUE-TNK) is a pilot, randomized, open-label, blinded end point, and multicenter trial. Eligible patients including primary MeVO as detected by the first DSA examination or secondary MeVO after endovascular treatment (EVT) for LVO will be assigned into the experimental group and control group as a ratio of 1:1. The experimental group will be treated with intra-arterial TNK (0.2–0.3 mg/min, for 20–30 min) via a microcatheter placed proximal to the site of occlusion, and the control group will be treated with routine therapy. Both groups of patients will be given standard stroke care based on the guidelines.OutcomeThe primary efficacy end point is successful recanalization of MeVO, defined as the expanded treatment in cerebral ischemia (eTICI) score 2b67-3 after the procedure, while the primary safety end point is symptomatic intracranial hemorrhage (sICH), defined as National Institutes of Health Stroke Scale score increase ≥4 caused by intracranial hemorrhage within 24 (−6/+24) hours after randomization.ConclusionThe results of RESCUE-TNK will provide evidence for the efficacy and safety of intra-arterial TNK in the recanalization of patients with MeVO.
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Affiliation(s)
- Hai-Zhou Hu
- Department of Neurology, General Hospital of Northern Theatre Command, Shenyang, China
| | - Jing Qiu
- Department of Neurology, General Hospital of Northern Theatre Command, Shenyang, China
| | - Wei Li
- Department of Neurology, General Hospital of Northern Theatre Command, Shenyang, China
| | - Thanh N. Nguyen
- Neurology, Radiology, Boston Medical Center, Boston, MA, United States
| | - Feng Wang
- Department of Interventional Therapy, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Di Li
- Neurological Intervention Department, Dalian Municipal Central Hospital, Dalian, China
| | - Huai-Zhang Shi
- Department of Neurosurgery, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Shou-Chun Wang
- Department of Neurology, First Affiliated Hospital of Jilin University, Changchun, China
| | - Ming Wei
- Department of Neurosurgery, Tianjin Huanhu Hospital, Tianjin, China
| | - Hui-Sheng Chen
- Department of Neurology, General Hospital of Northern Theatre Command, Shenyang, China
- *Correspondence: Hui-Sheng Chen,
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Neuroimaging in Patient Selection for Thrombectomy, From the AJR Special Series on Emergency Radiology. AJR Am J Roentgenol 2023; 220:630-640. [PMID: 36448911 DOI: 10.2214/ajr.22.28608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Endovascular thrombectomy has become the standard-of-care treatment for carefully selected patients with acute ischemic stroke due to a large-vessel occlusion of the anterior circulation. Neuroimaging plays a vital role in determining patient eligibility for thrombectomy, both in the early (0-6 hours from symptom onset) and late (> 6 to 24 hours from symptom onset) time windows. Various neuroimaging algorithms are used to determine thrombectomy eligibility, and each algorithm must be optimized for institutional workflow. In this review, we describe common imaging modalities and recommended algorithms for the evaluation of patients for endovascular thrombectomy. We also discuss emerging patient populations who might qualify for thrombectomy in the coming years.
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Sakai Y, Yoshikawa G, Koizumi S, Ishikawa O, Saito A, Sato K. Complete Recanalization in Mechanical Thrombectomy Is Associated with Favorable Functional Outcome for M2 Occlusions. JOURNAL OF NEUROENDOVASCULAR THERAPY 2022; 17:15-21. [PMID: 37501883 PMCID: PMC10370515 DOI: 10.5797/jnet.oa.2022-0057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 10/13/2022] [Indexed: 07/29/2023]
Abstract
Objective There are insufficient coherent reports on mechanical thrombectomy (MT) for occlusion of the second segment of the middle cerebral artery (M2 occlusion) in a real-world clinical setting. We evaluated the efficacy and safety of MT for M2 occlusions and compared the primary thrombectomy strategies (stent retriever, aspiration catheter, and combined technique) to analyze factors predicting good functional outcomes. Methods We evaluated background factors, preprocedural factors, procedural factors, and procedural time for patients who underwent MT for M2 occlusions from our retrospective cohort. According to the modified Rankin Scale (mRS) score three months after MT, patients were divided into good (mRS ≤2) and poor (mRS ≥3) prognosis groups. Results A total of 29 patients (median age, 78 years; 11 [37.9%] females) were included in the study. In this cohort, rates of successful reperfusion, thrombolysis in cerebral infarction (TICI) 3, postprocedural hemorrhage (PPH), and symptomatic PPH were 82.8, 34.5, 31.0, and 0%, respectively. Good prognoses were achieved in 13 (45%) cases. A prognostic factor of MT for M2 occlusions is TICI 3 from multivariate analysis (OR, 11.7; 95% CI, 1.003-136; p = 0.0497). There was no statistically significant difference in the functional outcome three months after MT based on the choice of the primary thrombectomy strategy. Conclusion MT for M2 occlusions is a reliable and relatively safe procedure. The presence of TICI 3 was a prognostic factor in this cohort. Future studies are warranted to investigate the optimal thrombectomy strategy for medium vessel occlusion.
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Affiliation(s)
- Yu Sakai
- Department of Neurosurgery, Showa General Hospital, Kodaira, Tokyo, Japan
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Gakushi Yoshikawa
- Department of Neurosurgery, Showa General Hospital, Kodaira, Tokyo, Japan
| | - Satoshi Koizumi
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Osamu Ishikawa
- Department of Neurosurgery, Asama General Hospital, Saku, Nagano, Japan
| | - Akira Saito
- Department of Neurosurgery, Saitama Medical Center, Saitama Medical University, Kawagoe, Saitama, Japan
| | - Katsuya Sato
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
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Bathla G, Pillenahalli Maheshwarappa R, Soni N, Hayakawa M, Priya S, Samaniego E, Ortega-Gutierrez S, Derdeyn CP. CT Perfusion Maps Improve Detection of M2-MCA Occlusions in Acute Ischemic Stroke. J Stroke Cerebrovasc Dis 2022; 31:106473. [PMID: 35430510 DOI: 10.1016/j.jstrokecerebrovasdis.2022.106473] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 03/15/2022] [Accepted: 03/20/2022] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVES Middle cerebral artery occlusions, particularly M2 branch occlusions are challenging to identify on CTA. We hypothesized that additional review of the CTP maps will increase large vessel occlusion (LVO) detection accuracy on CTA and reduce interpretation time. MATERIALS AND METHODS Two readers (R1 and R2) retrospectively reviewed the CT studies in 99 patients (27 normal, 26 M1-MCA, 46 M2-MCA occlusions) who presented with suspected acute ischemic stroke (AIS). The time of interpretation and final diagnosis were recorded for the CTA images (derived from CTP data), both without and with the CTP maps. The time for analysis for all vascular occlusions was compared using McNemar tests. ROC curve analysis and McNemar tests were performed to assess changes in diagnostic performance with the addition of CTP maps. RESULTS With the addition of the CTP maps, both readers showed increased sensitivity (p = 0.01 for R1 and p = 0.04 for R2), and accuracy (p = 0.02 for R1 and p = 0.004 for R2) for M2-MCA occlusions. There was a significant improvement in diagnostic performance for both readers for detection of M2-MCA occlusions (AUC R1 = 0.86 to 0.95, R2 = 0.84 to 0.95; p < 0.05). Both readers showed reduced interpretation time for all cases combined, as well as for normal studies (p < 0.001) when CTP images were reviewed along with CTA. Both readers also showed reduced interpretation time for M2-MCA occlusions, which was significant for one of the readers (p < 0.02). CONCLUSION The addition of CTP maps improves accuracy and reduces interpretation time for detecting LVO and M2-MCA occlusions in AIS. Incorporation of CTP in acute stroke imaging protocols may improve detection of more distal occlusions.
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Affiliation(s)
- Girish Bathla
- Clinical Assistant Professor of Radiology, Division of Neuroradiology, Department of Radiology, University of Iowa Hospitals and Clinics, Iowa City, IA 52242, USA
| | | | - Neetu Soni
- Clinical Assistant Professor, Department of Radiology, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Minako Hayakawa
- Clinical Assistant Professor, Department of Radiology, University of Iowa Hospitals and Clinics, Iowa City, IA 52242, USA
| | - Sarv Priya
- Clinical Assistant Professor of Radiology, Department of Radiology, University of Iowa Hospitals and Clinics, Iowa City, IA 52242, USA
| | - Edgar Samaniego
- Clinical Associate Professor of Neurology, Department of Neurology, University of Iowa Hospitals and Clinics, Iowa City, IA 52242, USA
| | - Santiago Ortega-Gutierrez
- Clinical Associate Professor of Neurology, Department of Neurology, University of Iowa Hospitals and Clinics, Iowa City, IA 52242, USA
| | - Colin P Derdeyn
- Professor and Chair, Department of Radiology, University of Iowa Hospitals and Clinics, Iowa City, IA 52242, USA
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Ospel JM, Goyal M. A review of endovascular treatment for medium vessel occlusion stroke. J Neurointerv Surg 2021; 13:623-630. [PMID: 33637570 DOI: 10.1136/neurintsurg-2021-017321] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/17/2021] [Accepted: 02/17/2021] [Indexed: 11/04/2022]
Abstract
Medium-vessel occlusions (MeVOs), that is, occlusions of the M2/3 middle cerebral artery, A2/3 anterior cerebral artery, and P2/3 posterior cerebral artery segments, account for 25%-40% of all acute ischemic stroke cases. Clinical outcomes of MeVO stroke with intravenous thrombolysis, which is the current standard of care, are moderate at best. With improving imaging technologies and a growing literature, MeVOs are increasingly recognized as a target for endovascular treatment (EVT). For the time being, there is limited but promising evidence for the safety and efficacy of MeVO EVT, and many neurointerventionists are already routinely offering EVT for MeVO stroke, despite the lack of clear guideline recommendations. In this article, we review the evidence on endovascular treatment for MeVO stroke and summarize the available literature on current imaging strategies, commonly used EVT selection criteria, EVT techniques, and outcome assessment for MeVO stroke.
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Affiliation(s)
- Johanna Maria Ospel
- Radiology, Universitatsspital Basel, Basel, Switzerland.,Clinical Neuroscienes, University of Calgary, Calgary, Alberta, Canada
| | - Mayank Goyal
- Clinical Neuroscienes, University of Calgary, Calgary, Alberta, Canada .,Diagnostic Imaging, University of Calgary, Calgary, Alberta, Canada
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