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Tanaka K, Brown S, Goyal M, Menon BK, Campbell BCV, Mitchell PJ, Jovin TG, Saver JL, Muir KW, White PM, Bracard S, Guillemin F, Roos YBWEM, van Zwam WH, Najm M, Dowlatshahi D, Hill MD, Demchuk AM. HERMES-24 Score Derivation and Validation for Simple and Robust Outcome Prediction After Large Vessel Occlusion Treatment. Stroke 2024; 55:1982-1990. [PMID: 39038101 DOI: 10.1161/strokeaha.123.045871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 06/04/2024] [Indexed: 07/24/2024]
Abstract
BACKGROUND Clinicians need simple and highly predictive prognostic scores to assist practical decision-making. We aimed to develop a simple outcome prediction score applied 24 hours after anterior circulation acute ischemic stroke treatment with endovascular thrombectomy and validate it in patients treated both with and without endovascular thrombectomy. METHODS Using the HERMES (Highly Effective Reperfusion Evaluated in Multiple Endovascular Stroke Trials) collaboration data set (n=1764), patients in the endovascular thrombectomy arm were divided randomly into a derivation cohort (n=430) and a validation cohort (n=441). From a set of candidate predictors, logistic regression modeling using forward variable selection was used to select a model that was both parsimonious and highly predictive for modified Rankin Scale (mRS) ≤2 at 90 days. The score was validated in validation cohort, control arm (n=893), and external validation cohorts from the ESCAPE-NA1 (Efficacy and Safety of Nerinetide for the Treatment of Acute Ischaemic Stroke; n=1066) and INTERRSeCT (Identifying New Approaches to Optimize Thrombus Characterization for Predicting Early Recanalization and Reperfusion With IV Alteplase and Other Treatments Using Serial CT Angiography; n=614). RESULTS In the derivation cohort, we selected 2 significant predictors of mRS ≤2 (National Institutes of Health Stroke Scale score at 24 hours and age [β-coefficient, 0.34 and 0.06]) and derived the HERMES-24 score: age (years)/10+National Institutes of Health Stroke Scale score at 24 hours. The HERMES-24 score was highly predictive for mRS ≤2 (c-statistic 0.907 [95% CI, 0.879-0.935]) in the derivation cohort. In the validation cohort and the control arm, the HERMES-24 score predicts mRS ≤2 (c-statistic, 0.914 [95% CI, 0.886-0.944] and 0.909 [95% CI, 0.887-0.930]). Observed provability of mRS ≤2 ranged between 3.1% and 3.4% when HERMES-24 score ≥25, while it ranged between 90.6% and 93.0% when HERMES-24 score <10 in the derivation cohort, validation cohort, and control arm. The HERMES-24 score also showed c-statistics of 0.894 and 0.889 for mRS ≤2 in the ESCAPE-NA1 and INTERRSeCT populations. CONCLUSIONS The post-treatment HERMES-24 score is a simple validated score that predicts a 3-month outcome after anterior circulation large vessel occlusion stroke regardless of intervention, which helps prognostic discussion with families on day 2.
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Affiliation(s)
- Koji Tanaka
- Department of Clinical Neurosciences (K.T., M.G., B.K.M., M.N., M.D.H., A.M.D.), Cumming School of Medicine, University of Calgary, AB, Canada
| | - Scott Brown
- Altair Biostatistics, St. Louis Park, MN (S. Brown)
| | - Mayank Goyal
- Department of Clinical Neurosciences (K.T., M.G., B.K.M., M.N., M.D.H., A.M.D.), Cumming School of Medicine, University of Calgary, AB, Canada
- Department of Radiology and Hotchkiss Brain Institute (M.G., B.K.M., M.D.H., A.M.D.), Cumming School of Medicine, University of Calgary, AB, Canada
| | - Bijoy K Menon
- Department of Clinical Neurosciences (K.T., M.G., B.K.M., M.N., M.D.H., A.M.D.), Cumming School of Medicine, University of Calgary, AB, Canada
- Department of Radiology and Hotchkiss Brain Institute (M.G., B.K.M., M.D.H., A.M.D.), Cumming School of Medicine, University of Calgary, AB, Canada
- Department of Community Health Sciences (B.K.M., M.D.H.), Cumming School of Medicine, University of Calgary, AB, Canada
| | - Bruce C V Campbell
- Department of Medicine and Neurology, Melbourne Brain Centre (B.C.V.C.), Royal Melbourne Hospital, The University of Melbourne, Parkville, VIC, Australia
| | - Peter J Mitchell
- Department of Radiology (P.J.M.), Royal Melbourne Hospital, The University of Melbourne, Parkville, VIC, Australia
| | - Tudor G Jovin
- Department of Neurology, Cooper University Health Care, Camden, NJ (T.G.J.)
| | - Jeffrey L Saver
- Department of Radiology and Neuroradiology, Universitätsklinikum Kiel, Schleswig-Holstein, Germany (J.L.S.)
| | - Keith W Muir
- Institute of Neuroscience and Psychology, University of Glasgow, Scotland, United Kingdom (K.W.M.)
| | - Phil M White
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, England, United Kingdom (P.M.W.)
| | - Serge Bracard
- Department of Diagnostic and Interventional Neuroradiology, Imagerie Adaptative Diagnostique et Interventionnelle (S. Bracard), Centre Hospitalier Régional Universitaire de Nancy, Institut national de la santé et de la recherche médicale, Université de Lorraine, France
| | - Francis Guillemin
- Clinical Epidemiology Center (F.G.), Centre Hospitalier Régional Universitaire de Nancy, Institut national de la santé et de la recherche médicale, Université de Lorraine, France
| | - Yvo B W E M Roos
- Department of Neurology, Amsterdam University Medical Center, North Holland, the Netherlands (Y.B.W.E.M.R.)
| | - Wim H van Zwam
- Department of Radiology, Maastricht University Medical Center, Rotterdam, South Holland, the Netherlands (W.H.v.Z.)
| | - Mohamed Najm
- Department of Clinical Neurosciences (K.T., M.G., B.K.M., M.N., M.D.H., A.M.D.), Cumming School of Medicine, University of Calgary, AB, Canada
| | - Dar Dowlatshahi
- Department of Medicine and Ottawa Hospital Research Institute, University of Ottawa, ON, Canada (D.D.)
| | - Michael D Hill
- Department of Clinical Neurosciences (K.T., M.G., B.K.M., M.N., M.D.H., A.M.D.), Cumming School of Medicine, University of Calgary, AB, Canada
- Department of Radiology and Hotchkiss Brain Institute (M.G., B.K.M., M.D.H., A.M.D.), Cumming School of Medicine, University of Calgary, AB, Canada
- Department of Community Health Sciences (B.K.M., M.D.H.), Cumming School of Medicine, University of Calgary, AB, Canada
- Department of Medicine (M.D.H.), Cumming School of Medicine, University of Calgary, AB, Canada
| | - Andrew M Demchuk
- Department of Clinical Neurosciences (K.T., M.G., B.K.M., M.N., M.D.H., A.M.D.), Cumming School of Medicine, University of Calgary, AB, Canada
- Department of Radiology and Hotchkiss Brain Institute (M.G., B.K.M., M.D.H., A.M.D.), Cumming School of Medicine, University of Calgary, AB, Canada
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D'Netto P, Finch E, Rumbach A, Copland DA. An exploratory study of longitudinal trajectory of language, swallowing and cognition post endovascular clot retrieval. INTERNATIONAL JOURNAL OF LANGUAGE & COMMUNICATION DISORDERS 2024; 59:1386-1397. [PMID: 38227576 DOI: 10.1111/1460-6984.13006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 12/21/2023] [Indexed: 01/18/2024]
Abstract
BACKGROUND Endovascular clot retrieval (ECR) is known to reduce global disability at 3 months post stroke however limited research exists regarding the trajectory of specific clinical impairments including language, swallowing and cognitive deficits between onset and 3 months. AIMS To assess language, swallowing, and cognitive performance following ECR and explore whether impairment severity is correlated with modified Thrombolysis in Cerebral Infarction score (mTICI), stroke severity or quality of life (QoL). METHODS Assessment was completed within 7 days (T1), 1 month (T2) and 3 months (T3) post-stroke. Performance was measured with the Functional Oral Intake Scale (FOIS), Repeatable Battery for Assessment of Neuropsychological Status (RBANS), Trail Making Test (TMT A and B) and Brixton Spatial Awareness Test. The Western Aphasia Battery (WAB) was used for left hemisphere stroke. QoL was measured with the Stroke and Aphasia Quality of Life Scale. RESULTS Twenty-five participants (median 72 years; 64% male) were prospectively recruited following ECR. High reperfusion success (68% mTICI 3) and low stroke severity post ECR (median 24 h NIHSS = 3, IQR 7-18) were noted. At T1, 10 participants presented with aphasia, eight required a modified diet and 20 had impaired cognition. At T3 all had recovered to a normal oral diet, 39% had persistent cognitive impairment and 45% of patients with left hemisphere stroke remained aphasic. Performance on the WAB, FOIS, RBANS and TMT changed significantly over time (all p < 0.05). The severity score at T1 for all measures, excluding TMT B and Brixton, was significantly correlated with 24 h NIHSS. WAB scores at T3 were correlated with QoL (r = 0.618; p = 0.043). CONCLUSION This exploratory study found the longitudinal performance of language, swallowing and cognition significantly improved over time and severity in the first-week post-ECR was correlated with 24 h NIHSS rather than the degree of reperfusion. WHAT THIS PAPER ADDS What is already known on the subject Randomised control trials have demonstrated the benefit of ECR in patients with ischemic stroke using global measures of disability and function. Limited research exists regarding the trajectory of specific clinical impairments including language, swallowing and cognitive deficits. There is also a reliance on screening assessments and a lack of consideration of the influence of co-occurring impairments. What this paper adds to existing knowledge This prospective study is amongst the first to explore the longitudinal trajectory of language, swallowing and cognitive impairment using a standardised assessment battery. Twenty-four-hour NIHSS was significantly correlated with language, swallowing, global cognition and some measures of executive function. Language performance post ECR was correlated with domain-specific cognitive assessment of attention, immediate memory and delayed memory, which differed from swallowing performance post ECR that correlated with measures of executive function. What are the potential or actual clinical implications of this work? It is important for speech-language pathologists and the wider medical team to monitor language, swallowing and cognitive performance post ECR regardless of treatment success. Stroke severity at 24 h post-ECR influences the severity of language, swallowing and cognitive impairments.
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Affiliation(s)
- Pamela D'Netto
- School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, Australia
- Speech Pathology Department, Ipswich Hospital, West Moreton Hospital and Health Service, Ipswich, Australia
| | - Emma Finch
- School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, Australia
- Centre for Functioning and Health Research, Metro South Health, Brisbane, Australia
- Speech Pathology Department, Ipswich Hospital, West Moreton Hospital and Health Service, Ipswich, Australia
| | - Anna Rumbach
- School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, Australia
| | - David A Copland
- School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, Australia
- Queensland Aphasia Research Centre, The University of Queensland, Brisbane, Australia
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Rogalewski A, Klein N, Friedrich A, Kitsiou A, Schäbitz M, Zuhorn F, Gess B, Berger B, Klingebiel R, Schäbitz WR. Functional long-term outcome following endovascular thrombectomy in patients with acute ischemic stroke. Neurol Res Pract 2024; 6:2. [PMID: 38297374 PMCID: PMC10832147 DOI: 10.1186/s42466-023-00301-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 12/11/2023] [Indexed: 02/02/2024] Open
Abstract
Endovascular thrombectomy (EVT) is the most effective treatment for acute ischemic stroke caused by large vessel occlusion (LVO). Yet, long-term outcome (LTO) and health-related quality of life (HRQoL) in these patients have rarely been addressed, as opposed to modified Rankin scale (mRS) recordings. We analysed demographic data, treatment and neuroimaging parameters in 694 consecutive stroke patients in a maximum care hospital. In 138 of these patients with respect on receipt of written informed consent, LTO and HRQoL were collected over a period of 48 months after EVT using a standardised telephone survey (median 2.1 years after EVT). Age < 70 years (OR 4.82), lower NIHSS on admission (OR 1.11), NIHSS ≤ 10 after 24 h (OR 11.23) and complete recanalisation (mTICI3) (OR 7.79) were identified as independent predictors of favourable LTO. Occurrence of an infection requiring treatment within the first 72 h was recognised as a negative predictor for good long-term outcome (OR 0.22). Patients with mRS > 2 according to the telephone survey more often had complaints regarding mobility, self-care, and usual activity domains of the HRQoL. Our results underline a sustainable positive effect of effective EVT on the quality of life in LVO stroke. Additionally, predictive parameters of outcome were identified, that may support clinical decision making in LVO stroke.
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Affiliation(s)
- Andreas Rogalewski
- Department of Neurology, Evangelisches Klinikum Bethel, University Hospital OWL of the University Bielefeld, Campus Bielefeld-Bethel, Schildescher Str. 99, 33611, Bielefeld, Germany.
- Department of Neurology, Sankt Elisabeth Hospital Gütersloh, Catholic Hospital Association of East Westfalia (KHO), Gütersloh, Germany.
| | - Nele Klein
- Department of Neurology, Evangelisches Klinikum Bethel, University Hospital OWL of the University Bielefeld, Campus Bielefeld-Bethel, Schildescher Str. 99, 33611, Bielefeld, Germany
- Department of Neurology, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Anja Friedrich
- Department of Psychology, Bielefeld University, Bielefeld, Germany
| | - Alkisti Kitsiou
- Department of Neurology, Evangelisches Klinikum Bethel, University Hospital OWL of the University Bielefeld, Campus Bielefeld-Bethel, Schildescher Str. 99, 33611, Bielefeld, Germany
| | - Marie Schäbitz
- Department of Neurology, Evangelisches Klinikum Bethel, University Hospital OWL of the University Bielefeld, Campus Bielefeld-Bethel, Schildescher Str. 99, 33611, Bielefeld, Germany
| | - Frédéric Zuhorn
- Department of Neurology, Evangelisches Klinikum Bethel, University Hospital OWL of the University Bielefeld, Campus Bielefeld-Bethel, Schildescher Str. 99, 33611, Bielefeld, Germany
| | - Burkhard Gess
- Department of Neurology, Evangelisches Klinikum Bethel, University Hospital OWL of the University Bielefeld, Campus Bielefeld-Bethel, Schildescher Str. 99, 33611, Bielefeld, Germany
- Department of Neurology, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Björn Berger
- Department of Neuroradiology, Evangelisches Klinikum Bethel EvKB, University Hospital OWL of the University Bielefeld, Campus Bielefeld-Bethel, Bielefeld, Germany
| | - Randolf Klingebiel
- Department of Neuroradiology, Evangelisches Klinikum Bethel EvKB, University Hospital OWL of the University Bielefeld, Campus Bielefeld-Bethel, Bielefeld, Germany
| | - Wolf-Rüdiger Schäbitz
- Department of Neurology, Evangelisches Klinikum Bethel, University Hospital OWL of the University Bielefeld, Campus Bielefeld-Bethel, Schildescher Str. 99, 33611, Bielefeld, Germany
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Karamchandani RR, Satyanarayana S, Yang H, Strong D, Rhoten JB, Clemente JD, Defilipp G, Patel NM, Bernard JD, Stetler WR, Parish JM, Guzik AK, Wolfe SQ, Helms AM, Macko L, Williams L, Retelski J, Asimos AW. The Charlotte Large artery occlusion Endovascular therapy Outcome Score predicts independent outcome after thrombectomy. J Neuroimaging 2023; 33:960-967. [PMID: 37664972 DOI: 10.1111/jon.13151] [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: 07/24/2023] [Revised: 08/25/2023] [Accepted: 08/25/2023] [Indexed: 09/05/2023] Open
Abstract
BACKGROUND AND PURPOSE Predicting functional outcomes after endovascular thrombectomy (EVT) is of interest to patients and families as they navigate hospital and post-acute care decision-making. We evaluated the prognostic ability of several scales to predict good neurological function after EVT. METHODS We retrospectively analyzed records from a health system's code stroke registry, including consecutive successful thrombectomy patients from August 2020 to February 2023 presenting with an anterior circulation large vessel occlusion who were evaluated with pre-EVT CT perfusion. Primary and secondary outcomes were 90-day modified Rankin Scale (mRS) scores 0-2 and 0-1, respectively. Logistic regression was performed to evaluate the ability of each scale to predict the outcomes. Scales were compared by calculating the area under the curve (AUC). RESULTS A total of 465 patients (mean age 68.1 [±14.9] years, median National Institutes of Health Stroke Scale [NIHSS] 16 [11-21]) met inclusion criteria. In the logistic regression, the Charlotte Large artery occlusion Endovascular therapy Outcome Score (CLEOS), Totaled Health Risks in Vascular Events, Houston Intra-Arterial Therapy-2, Pittsburgh Response to Endovascular therapy, and Stroke Prognostication using Age and NIHSS were significant in predicting the primary and secondary outcomes. CLEOS was superior to all other scales in predicting 90-day mRS 0-2 (AUC .75, 95% confidence interval [CI] .70-.80) and mRS 0-1 (AUC .74, 95% CI .69-.78). Twenty of 22 patients (90.9%) with CLEOS <315 had 90-day mRS 0-2. CONCLUSIONS CLEOS predicts independent and excellent neurological function after anterior circulation EVT.
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Affiliation(s)
- Rahul R Karamchandani
- Department of Neurology, Neurosciences Institute, Atrium Health, Charlotte, North Carolina, USA
| | - Sagar Satyanarayana
- Information and Analytics Services, Atrium Health, Charlotte, North Carolina, USA
| | - Hongmei Yang
- Information and Analytics Services, Atrium Health, Charlotte, North Carolina, USA
| | - Dale Strong
- Information and Analytics Services, Atrium Health, Charlotte, North Carolina, USA
| | - Jeremy B Rhoten
- Department of Neurology, Neurosciences Institute, Atrium Health, Charlotte, North Carolina, USA
| | - Jonathan D Clemente
- Charlotte Radiology, Neurosciences Institute, Atrium Health, Charlotte, North Carolina, USA
| | - Gary Defilipp
- Charlotte Radiology, Neurosciences Institute, Atrium Health, Charlotte, North Carolina, USA
| | - Nikhil M Patel
- Department of Internal Medicine, Pulmonary and Critical Care, Neurosciences Institute, Atrium Health, Charlotte, North Carolina, USA
| | - Joe D Bernard
- Carolina Neurosurgery and Spine Associates, Neurosciences Institute, Atrium Health, Charlotte, North Carolina, USA
| | - William R Stetler
- Carolina Neurosurgery and Spine Associates, Neurosciences Institute, Atrium Health, Charlotte, North Carolina, USA
| | - Jonathan M Parish
- Carolina Neurosurgery and Spine Associates, Neurosciences Institute, Atrium Health, Charlotte, North Carolina, USA
| | - Amy K Guzik
- Department of Neurology, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - Stacey Q Wolfe
- Department of Neurological Surgery, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - Anna Maria Helms
- Department of Neurology, Neurosciences Institute, Atrium Health, Charlotte, North Carolina, USA
| | - Lauren Macko
- Department of Neurology, Neurosciences Institute, Atrium Health, Charlotte, North Carolina, USA
| | - Laura Williams
- Department of Neurology, Neurosciences Institute, Atrium Health, Charlotte, North Carolina, USA
| | - Julia Retelski
- Department of Neurology, Neurosciences Institute, Atrium Health, Charlotte, North Carolina, USA
| | - Andrew W Asimos
- Department of Emergency Medicine, Neurosciences Institute, Atrium Health, Charlotte, North Carolina, USA
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5
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Lai Y, Diana F, Mofatteh M, Nguyen TN, Jou E, Zhou S, Sun H, He J, Yan W, Chen Y, Feng M, Chen J, Ma J, Li X, Meng H, Abdalkader M, Chen Y. Predictors of failure of early neurological improvement in early time window following endovascular thrombectomy: a multi-center study. Front Neurol 2023; 14:1227825. [PMID: 37780716 PMCID: PMC10538528 DOI: 10.3389/fneur.2023.1227825] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 08/23/2023] [Indexed: 10/03/2023] Open
Abstract
Background and objective Endovascular thrombectomy (EVT) has become the gold standard in the treatment of acute stroke patients. However, not all patients respond well to this treatment despite successful attempts. In this study, we aimed to identify variables associated with the failure of improvements following EVT. Methods We retrospectively analyzed prospectively collected data of 292 ischemic stroke patients with large vessel occlusion who underwent EVT at three academic stroke centers in China from January 2019 to February 2022. All patients were above 18 years old and had symptoms onset ≤6 h. A decrease of more than 4 points on the National Institute of Health Stroke Scale (NIHSS) after 24 h compared with admission or an NIHSS of 0 or 1 after 24 h was defined as early neurological improvement (ENI), whereas a lack of such improvement in the NIHSS was defined as a failure of early neurological improvement (FENI). A favorable outcome was defined as a modified Rankin scale (mRS) score of 0-2 after 90 days. Results A total of 183 patients were included in the final analyses, 126 of whom had FENI, while 57 had ENI. Favorable outcomes occurred in 80.7% of patients in the ENI group, in contrast to only 22.2% in the FENI group (p < 0.001). Mortality was 7.0% in the ENI group in comparison to 42.1% in the FENI group (p < 0.001). The multiple logistic regression model showed that diabetes mellitus [OR (95% CI), 2.985 (1.070-8.324), p = 0.037], pre-stroke mRS [OR (95% CI), 6.221 (1.421-27.248), p = 0.015], last known well to puncture time [OR (95% CI), 1.010 (1.003-1.016), p = 0.002], modified thrombolysis in cerebral infarction = 3 [OR (95% CI), 0.291 (0.122-0.692), p = 0.005], and number of mechanical thrombectomy passes [OR (95% CI), 1.582 (1.087-2.302), p = 0.017] were the predictors of FENI. Conclusion Diabetes mellitus history, pre-stroke mRS, longer last known well-to-puncture time, lack of modified thrombolysis in cerebral infarction = 3, and the number of mechanical thrombectomy passes are the predictors of FENI. Future large-scale studies are required to validate these findings.
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Affiliation(s)
- Yuzheng Lai
- Department of Neurology, Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine (Nanhai District Hospital of Traditional Chinese Medicine of Foshan City), Foshan, China
| | - Francesco Diana
- Department of Neuroradiology, A.O.U. San Giovanni di Dio e Ruggi d’Aragona, University of Salerno, Salerno, Italy
| | - Mohammad Mofatteh
- School of Medicine, Dentistry and Biomedical Sciences, Queen’s University Belfast, Belfast, United Kingdom
| | - Thanh N. Nguyen
- Department of Radiology, Boston University Chobanian and Avedisian School of Medicine, Boston, MA, United States
| | - Eric Jou
- School of Clinical Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Sijie Zhou
- Department of Surgery of Cerebrovascular Diseases, First People’s Hospital of Foshan, Foshan, China
| | - Hao Sun
- Department of Neurology, Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine (Nanhai District Hospital of Traditional Chinese Medicine of Foshan City), Foshan, China
| | - Jianfeng He
- Department of Neurology, Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine (Nanhai District Hospital of Traditional Chinese Medicine of Foshan City), Foshan, China
| | - Wenshan Yan
- Department of Neurology, Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine (Nanhai District Hospital of Traditional Chinese Medicine of Foshan City), Foshan, China
| | - Yiying Chen
- Department of Neurology, Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine (Nanhai District Hospital of Traditional Chinese Medicine of Foshan City), Foshan, China
| | - Mingzhu Feng
- Department of Neurology and Advanced National Stroke Center, Foshan Sanshui District People’s Hospital, Foshan, China
| | - Junbin Chen
- Department of Neurology, The Affiliated Yuebei People’s Hospital of Shantou University Medical College, Shaoguan, China
| | - Jicai Ma
- Department of Neurology, The Affiliated Yuebei People’s Hospital of Shantou University Medical College, Shaoguan, China
| | - Xinyuan Li
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Heng Meng
- Department of Neurology, The First Affiliated Hospital of Jinan University, Clinical Neuroscience Institute of Jinan University, Guangzhou, China
| | - Mohamad Abdalkader
- Department of Radiology, Boston University Chobanian and Avedisian School of Medicine, Boston, MA, United States
| | - Yimin Chen
- Department of Neurology and Advanced National Stroke Center, Foshan Sanshui District People’s Hospital, Foshan, China
- Neuro International Collaboration (NIC), Foshan, China
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Alobaida M, Lip GYH, Lane DA, Sagris D, Hill A, Harrison SL. Endovascular treatment for ischemic stroke patients with and without atrial fibrillation, and the effects of adjunctive pharmacotherapy: a narrative review. Expert Opin Pharmacother 2023; 24:377-388. [PMID: 36541626 DOI: 10.1080/14656566.2022.2161362] [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: 12/24/2022]
Abstract
INTRODUCTION Endovascular thrombectomy (EVT) is associated with good clinical outcomes in patients with ischemic stroke, but the impact of EVT on clinical outcomes in patients with ischemic stroke with and without atrial fibrillation (AF), and the effect of adjunctive pharmacological therapies with EVT, remains unclear. AREAS COVERED The goal of this narrative review is to provide an overview of studies which have examined: 1) associations between EVT and outcomes for patients following ischemic stroke, 2) associations between EVT and outcomes for patients following ischemic stroke with and without AF , including function, reperfusion, hemorrhage, and mortality, 3) the effect of adjunctive pharmacological therapies peri- and post-thrombectomy, and 4) integration of prehospital care on endovascular treatment outcomes. EXPERT OPINION There is little evidence from randomized controlled trials on the effect of AF on stroke outcomes following EVT and the safety and efficacy of AF treatment in the peri-EVT such as tirofiban or Intravenous thrombolysis with Non-vitamin K Antagonist Oral Anticoagulant. The available evidence from observational studies on AF and EVT outcomes is inconsistent, but factors such as procedural EVT devices, the center volume, clinician experience, stroke recognition, and inclusion criteria of studies have all been associated with poorer clinical outcomes. Enhancing the clinical network among prehospital and hospitals will facilitate direct transfer to EVT centers, reducing stroke onset to EVT time and optimizing stroke outcomes.
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Affiliation(s)
- Muath Alobaida
- Liverpool Centre for Cardiovascular Science, University of Liverpool, Liverpool, UK.,Department of Cardiovascular and Metabolic Medicine, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK.,Department of Basic Science, Prince Sultan Bin Abdulaziz College for Emergency Medical Services, King Saud University, Riyadh, Saudi Arabia
| | - Gregory Y H Lip
- Department of Cardiovascular and Metabolic Medicine, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK.,Liverpool Centre for Cardiovascular Science, University of Liverpool & Liverpool Heart and Chest Hospital, Liverpool, UK.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Deirdre A Lane
- Department of Cardiovascular and Metabolic Medicine, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK.,Liverpool Centre for Cardiovascular Science, University of Liverpool & Liverpool Heart and Chest Hospital, Liverpool, UK.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Dimitrios Sagris
- Liverpool Centre for Cardiovascular Science, University of Liverpool & Liverpool Heart and Chest Hospital, Liverpool, UK.,Department of Medicine and Research Laboratory, University Hospital of Larissa, University of Thessaly, Larissa, Greece
| | - Andrew Hill
- Department of Medicine, Whiston Hospital, St Helens and Knowsley Teaching Hospitals NHS Trust, UK
| | - Stephanie L Harrison
- Department of Cardiovascular and Metabolic Medicine, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK.,Liverpool Centre for Cardiovascular Science, University of Liverpool & Liverpool Heart and Chest Hospital, Liverpool, UK
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Pierre K, Perez-Vega C, Fusco A, Olowofela B, Hatem R, Elyazeed M, Azab M, Lucke-Wold B. Updates in mechanical thrombectomy. EXPLORATION OF NEUROSCIENCE 2022; 1:83-99. [PMID: 36655054 PMCID: PMC9845048 DOI: 10.37349/en.2022.00007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 09/26/2022] [Indexed: 01/01/2023]
Abstract
Stroke is a leading cause of morbidity and mortality. The advent of mechanical thrombectomy has largely improved patient outcomes. This article reviews the features and outcomes associated with aspiration, stent retrievers, and combination catheters used in current practice. There is also a discussion on clinical considerations based on anatomical features and clot composition. The reperfusion grading scale and outcome metrics commonly used following thrombectomy when a patient is still in the hospital are reviewed. Lastly, there are proposed discharge and outpatient follow-up goals in caring for patients hospitalized for a stroke.
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Affiliation(s)
- Kevin Pierre
- Department of Radiology, University of Florida, Gainesville, FL 32608, USA
| | - Carlos Perez-Vega
- Department of Neurosurgery, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Anna Fusco
- College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Bankole Olowofela
- College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Rami Hatem
- College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Mohammed Elyazeed
- Department of Neurosurgery, University of Florida, Gainesville, FL 32608, USA
| | - Mohammed Azab
- Biomolecular Sciences Graduate Program, Boise State University, Boise, ID 83725, USA
| | - Brandon Lucke-Wold
- Department of Neurosurgery, University of Florida, Gainesville, FL 32608, USA
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8
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Predictive Value of Different Computed Tomography Perfusion Software Regarding 90-Day Outcome of Acute Ischemic Stroke Patients After Endovascular Treatment: A Comparison With Magnetic Resonance Imaging. J Comput Assist Tomogr 2022; 46:945-952. [PMID: 35696312 DOI: 10.1097/rct.0000000000001342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVE This study compared ischemic core and penumbra volumes obtained using different computed tomography perfusion (CTP) software and evaluated the predictive value of CTP and magnetic resonance imaging (MRI) results for 90-day outcomes. METHODS In total, 105 acute ischemic stroke patients who underwent endovascular treatment from January 2016 to December 2020 were included. Patients were divided into good and poor outcome groups by a modified Rankin Scale score. Computed tomography perfusion core and penumbra volumes were obtained using OleaSphere and Vitrea software to assess the volumetric relationship with MRI using the Spearman correlation test, intraclass correlation coefficient (ICC), and Bland-Altman plot. Three multivariable models were developed: baseline variables with MRI infarct volume, baseline variables with OleaSphere core volume, and baseline variables with Vitrea core volume. The area under the receiver operating characteristic curve of the 3 models was compared using the DeLong test. RESULTS Median core volumes were 27.5, 26.9, and 31.1 mL for OleaSphere, Vitrea, and MRI, respectively. There was substantial correlation and excellent agreement between OleaSphere and MRI core volume ( ρ = 0.84, P < 0.001; ICC = 0.84) and Vitrea and MRI core volume ( ρ = 0.80, P < 0.001; ICC = 0.83). The areas under curve for MRI volume, OleaSphere, and Vitrea were 0.86, 0.84, and 0.83, respectively. There were no significant differences ( P = 0.18) between the predictive value of the 3 models. CONCLUSIONS Computed tomography perfusion core volumes showed substantial correlation and excellent agreement with MRI. There was no significant difference in the predictive value of the 3 models, suggesting that core volumes measured using CTP software can predict patient prognosis.
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9
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Laflamme M, Carrondo-Cottin S, Valdès MM, Simonyan D, Audet MÈ, Gariépy JL, Camden MC, Gariépy C, Verreault S, Lavoie P. Association between Early Ischemic Changes and Collaterals in Acute Stroke: A Retrospective Study. AJNR Am J Neuroradiol 2022; 43:1424-1430. [PMID: 36137656 PMCID: PMC9575540 DOI: 10.3174/ajnr.a7632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 07/13/2022] [Indexed: 01/26/2023]
Abstract
BACKGROUND AND PURPOSE The quality of leptomeningeal collaterals may influence the speed of infarct progression in acute stroke. Our main objective was to evaluate the association of leptomeningeal collateral score and its interaction with time with ischemic changes on CT in patients with acute stroke. MATERIALS AND METHODS Adult patients with acute stroke symptoms and anterior circulation large-vessel occlusion on CTA from 2015 to 2019 were included. Routinely performed NCCT and multiphase CTA were reviewed to assess ASPECTS and the leptomeningeal collateral score. We built multivariate regression models to assess the association between leptomeningeal collateral score and its interaction with time and ASPECTS. Performance measures to predict poor ASPECTS at different time thresholds (identified with receiver operating characteristic curve analysis) were estimated in a subgroup of patients with poor leptomeningeal collateral scores. RESULTS Leptomeningeal collateral scores 0-1 were associated with lower ASPECTS, and the model with dichotomized and trichotomized leptomeningeal collateral score showed a significant multiplicative interaction between time and the leptomeningeal collateral score. The negative predictive value for poor ASPECTS was >0.9 for at least the first 3 hours from stroke onset to imaging, and the positive predictive value was <0.5 for every time threshold tested in the subgroup of patients with leptomeningeal collateral scores 0-3. CONCLUSIONS Poor (0-1) leptomeningeal collateral scores were associated with lower ASPECTS, and an increase in time has a multiplicative interaction with the leptomeningeal collateral score on ASPECTS.
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Affiliation(s)
- M Laflamme
- Form the Division of Neurosurgery, Department of Surgery (M.L., C.G., P.L.)
| | - S Carrondo-Cottin
- Department of Neurosciences, Centre Hospitalier Universitaire de Québec -Université Laval Research Center (S.C.C.), Quebec, Canada
| | - M-M Valdès
- Department of Radiology (M.-M.V., M.-È.A, J.-L.G.)
| | - D Simonyan
- Clinical and Evaluative Research Platform (D.S.)
| | - M-È Audet
- Department of Radiology (M.-M.V., M.-È.A, J.-L.G.)
| | - J-L Gariépy
- Department of Radiology (M.-M.V., M.-È.A, J.-L.G.)
| | - M-C Camden
- Division of Neurology, Department of Medicine (M.-C.C., S.V.), Centre Hospitalier Universitaire de Québec -Université Laval, Quebec, Canada
| | - C Gariépy
- Form the Division of Neurosurgery, Department of Surgery (M.L., C.G., P.L.)
| | - S Verreault
- Division of Neurology, Department of Medicine (M.-C.C., S.V.), Centre Hospitalier Universitaire de Québec -Université Laval, Quebec, Canada
| | - P Lavoie
- Form the Division of Neurosurgery, Department of Surgery (M.L., C.G., P.L.)
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10
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Feng L, He Y, Dong S, Wang R, Long S, He L. An exploratory descriptive cohort study of 90-day prognosis after acute ischaemic stroke with mechanical thrombectomy. Contemp Nurse 2022; 58:264-275. [PMID: 36052463 DOI: 10.1080/10376178.2022.2107038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
AIM To evaluate the relationship between nursing assessment findings at discharge and acute ischaemic stroke (AIS) patient prognosis after mechanical thrombectomy (MT). METHODS We analysed the characteristics of 144 AIS patients with MT treatment admitted to a university affiliated teaching hospital in Chengdu, Sichuan Province China, from January 2020 to December 2020. The modified Rankin Scale (mRS) score was used to assess outcomes 90-days after discharge. Exploratory analyses were undertaken using IBM SPSS Statistics (Version 26.0). RESULTS At 90-days, 47.9% (n = 69) had a good prognosis (mRS ≤ 2) including 22.2%(n = 32) fully recovered patients. There were 5 (3.5%) deceased patients and 48.6% (n =70) of patients had a poor prognosis (mRS ≥ 3). In univariate analysis, clinical prognosis correlated with the need for inpatient endotracheal intubation (p = 0.02), nasogastric tube (p<0.001), indwelling urinary catheter (p<0.001), central venous catheter (p = 0.03), health knowledge needs of pressure injury prevention (p = 0.03), National Institute of Health Stroke Scale (NIHSS) score (p<0.001) and Activities of Daily Living (ADL) score (p<0.001) at the time of discharge from hospital. The average hospitalisation time of the 144 patients was 12[IQR, 9-25] days, and the average cost of hospitalisation was $Y$21291.93 (SD 9165.01). CONCLUSION Almost half of the surviving patients had a poor prognosis. In our country, this surgery and rehabilitation impose a significant financial burden that needs to be addressed. However, the longer length of hospital stay and higher costs at discharge may be contributing factors to worse outcomes. The outcomes of comprehensive nursing assessment of the patients, including nursing needs, activities of daily living, and neurological function, can predict their outcome. IMPACT STATEMENT We recommend a comprehensive nursing assessment at discharge that predicts patient outcomes and can be used for subsequent targeted interventions. The prognosis of patients with acute ischaemic stroke after mechanical thrombectomy is poor, and the financial burden needs to be considered.
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Affiliation(s)
- Ling Feng
- West China School of Nursing,Sichuan University/Department of Neurology,West China Hospital,Sichuan University, Chengdu China
| | - Yueyue He
- West China School of Nursing,Sichuan University/Department of Neurology,West China Hospital,Sichuan University, Chengdu China
| | - Shuju Dong
- Department of Neurology, West China Hospital, Sichuan University, Chengdu China
| | - Rui Wang
- West China School of Nursing,Sichuan University/Department of Neurology,West China Hospital,Sichuan University, Chengdu China
| | - Shiyan Long
- West China School of Nursing,Sichuan University/Department of Neurology,West China Hospital,Sichuan University, Chengdu China
| | - Li He
- Department of Neurology, West China Hospital, Sichuan University, Chengdu China
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11
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Javed K, Qin J, Mowery W, Kadaba D, Altschul D, Haranhalli N. Predicting 90-day Functional Dependency and Death after Endovascular Thrombectomy for Stroke: The BET Score. J Stroke Cerebrovasc Dis 2022; 31:106342. [DOI: 10.1016/j.jstrokecerebrovasdis.2022.106342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 01/06/2022] [Accepted: 01/19/2022] [Indexed: 11/26/2022] Open
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12
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Kim SY, Yi HJ, Shin DS, Kim BT. Prognostic significance of platelet-to-lymphocyte and platelet-to-neutrophil ratios in patients with mechanical thrombectomy for acute ischemic stroke. J Cerebrovasc Endovasc Neurosurg 2022; 24:221-231. [PMID: 35443275 PMCID: PMC9537644 DOI: 10.7461/jcen.2022.e2021.10.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/23/2021] [Indexed: 11/24/2022] Open
Abstract
Objective The present study aimed to analyze the correlation between platelet-to-lymphocyte ratio (PLR) and platelet-to-neutrophil ratio (PNR) with prognosis of patients who underwent mechanical thrombectomy (MT). Methods A total of 432 patients was included, PLR and PNR were calculated from laboratory data on admission. Prognosis was evaluated with a modified Rankin Scale at 3 months after MT. Using receiver operating characteristic (ROC) analysis, optimal cutoff values of PLR and PNR were identified to predict the prognosis after MT. Multivariate analyses were performed to identify the relationship of PLR and PLR with prognosis of MT. Results Patients with favorable outcomes had a lower mean PLR (135.0, standard deviation [SD] 120.3) with a higher mean PNR (47.1 [SD] 24.6) compared with patients with unfavorable outcomes (167.6 [SD] 139.3 and 35.4 [SD] 22.4) (p<0.001 and <0.001, respectively). In ROC analyses, the optimal cutoff value of PLR and PNR to predict the 3 months prognosis were 145 and 41, respectively (p=<0.001 and p=0.006). In multivariate analysis, PLR less than 145 (odds ratio [OR] 1.29, 95% confidence interval [CI] 1.06–2.06; p=0.016) and PNR greater than 41 (OR 1.22, 95% CI 1.10–1.62; p=0.022) were predictors of favorable outcome at 3 months. Conclusions In patients with MT, PLR and PNR on admission could be predictive factors of prognosis and mortality at 3 months. Decreased PLR and increased PNR were associated with favorable clinical outcome 3 months after MT.
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Affiliation(s)
- Seon-Yeop Kim
- Department of Neurosurgery, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Ho Jun Yi
- Department of Neurosurgery, Soonchunhyang University Bucheon Hospital, Bucheon, Korea.,Department of Neurosurgery, St. Vincent's Hospital, the Catholic University of Korea, Seoul, Korea
| | - Dong-Seong Shin
- Department of Neurosurgery, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Bum-Tae Kim
- Department of Neurosurgery, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
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13
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Wang R, Xie Z, Li B, Zhang P. Renal impairment and the prognosis of endovascular thrombectomy: a meta-analysis and systematic review. Ther Adv Neurol Disord 2022; 15:17562864221083620. [PMID: 35646161 PMCID: PMC9133867 DOI: 10.1177/17562864221083620] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Accepted: 02/08/2022] [Indexed: 11/17/2022] Open
Abstract
Background The association between renal impairment (RI) and stroke outcome after endovascular thrombectomy (EVT) remains unclear, which limits the estimation of patient prognosis by clinicians involved in EVT decision-making. Purpose This study aimed to investigate the association between RI and acute ischemic stroke (AIS) outcomes in patients treated with EVT. Methods Studies involving the association between RI at admission and AIS outcomes after EVT were retrieved from the PubMed and Embase databases from their inception to 17 January 2022. A fixed-effects model was used to synthesize the data of the included studies. Sensitivity analysis was performed to identify the source of heterogeneity. Results Overall, 11 studies, including 5053 patients with stroke receiving EVT, were included in the full analysis. In unadjusted analyses, RI was associated with 3-month poor functional outcome and mortality; the odds ratios (ORs) were 2.13 [10 studies; 95% confidence interval (CI), 1.77-2.56; I 2 = 45%] and 2.42 (8 studies; 95% CI, 2.02-2.90; I 2 = 58%), respectively. In adjusted analyses, the above associations remained significant; the OR of the 3-month poor functional outcome was 1.49 (5 studies; 95% CI, 1.17-1.90; I 2 = 58%), and the OR of the 3-month mortality was 1.84 (6 studies; 95% CI, 1.45-2.33; I 2 = 74%). Similar results were obtained in sensitivity analyses. Conclusion Our results suggest that in patients with AIS who underwent EVT, RI at admission was associated with 3-month poor functional outcome and mortality.
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Affiliation(s)
- Rui Wang
- Department of Epidemiology and Biostatistics,
School of Public Health, Jilin University, Changchun, ChinaDepartment of
Thoracic Surgery, The First Hospital of Jilin University, Changchun,
China
| | - Zechun Xie
- Department of Epidemiology and Biostatistics,
School of Public Health, Jilin University, Changchun, China
| | - Bo Li
- Department of Epidemiology and Biostatistics,
School of Public Health, Jilin University, 1163 Xinmin Street, Changchun
130021, China
| | - Peng Zhang
- Clinical Trial and Research Center for Stroke,
Department of Neurology, The First Hospital of Jilin University, 1 Xinmin
Street, Changchun 130021, China
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14
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Bosch PR, Karmarkar AM, Roy I, Fehnel CR, Burke RE, Kumar A. Association of Medicare-Medicaid Dual Eligibility and Race and Ethnicity With Ischemic Stroke Severity. JAMA Netw Open 2022; 5:e224596. [PMID: 35357456 PMCID: PMC8972034 DOI: 10.1001/jamanetworkopen.2022.4596] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Accepted: 02/03/2022] [Indexed: 12/13/2022] Open
Abstract
Importance Black and Hispanic US residents are disproportionately affected by stroke incidence, and patients with dual eligibility for Medicare and Medicaid may be predisposed to more severe strokes. Little is known about differences in stroke severity for individuals with dual eligibility, Black individuals, and Hispanic individuals, but understanding hospital admission stroke severity is the first important step for focusing strategies to reduce disparities in stroke care and outcomes. Objective To examine whether dual eligibility and race and ethnicity are associated with stroke severity in Medicare beneficiaries admitted to acute hospitals with ischemic stroke. Design, Setting, and Participants This retrospective cross-sectional study was conducted using Medicare claims data for patients with ischemic stroke admitted to acute hospitals in the United States from October 1, 2016, to November 30, 2017. Data were analyzed from July 2021 and January 2022. Exposures Dual enrollment for Medicare and Medicaid; race and ethnicity categorized as White, Black, Hispanic, and other. Main Outcomes and Measures Claim-based National Institutes of Health Stroke Scale (NIHSS) categorized into minor (0-7), moderate (8-13), moderate to severe (14-21), and severe (22-42) stroke. Results Our sample included 45 459 Medicare fee-for-service patients aged 66 and older (mean [SD] age, 80.2 [8.4]; 25 303 [55.7%] female; 7738 [17.0%] dual eligible; 4107 [9.0%] Black; 1719 [3.8%] Hispanic; 37 715 [83.0%] White). In the fully adjusted models, compared with White patients, Black patients (odds ratio [OR], 1.21; 95% CI, 1.06-1.39) and Hispanic patients (OR, 1.54; 95% CI, 1.29-1.85) were more likely to have a severe stroke. Using White patients without dual eligibility as a reference group, White patients with dual eligibility were more likely to have a severe stroke (OR, 1.75; 95% CI, 1.56-1.95). Similarly, Black patients with dual eligibility (OR, 2.15; 95% CI, 1.78-2.60) and Hispanic patients with dual eligibility (OR, 2.50; 95% CI, 1.98-3.16) were more likely to have a severe stroke. Conclusions and Relevance In this cross-sectional study, Medicare fee-for-service patients with ischemic stroke admitted to acute hospitals who were Black or Hispanic had a higher likelihood of worse stroke severity. Additionally, dual eligibility status had a compounding association with stroke severity regardless of race and ethnicity. An urgent effort is needed to decrease disparities in access to preventive and poststroke care for dual eligible and minority patients.
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Affiliation(s)
- Pamela R. Bosch
- College of Health and Human Services, Northern Arizona University, Phoenix Biomedical Campus, Phoenix
| | - Amol M. Karmarkar
- Department of Physical Medicine and Rehabilitation, School of Medicine, Virginia Commonwealth University, Richmond
- Sheltering Arms Institute, Richmond, Virginia
| | - Indrakshi Roy
- Center for Health Equity Research, Northern Arizona University, Flagstaff
| | - Corey R. Fehnel
- Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Marcus Institute for Aging Research, Boston, Massachusetts
| | - Robert E. Burke
- Division of General Internal Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia
- Center for Health Equity Research and Promotion, Corporal Crescenz VA Medical Center, Philadelphia, Pennsylvania
| | - Amit Kumar
- College of Health and Human Services, Northern Arizona University, Phoenix Biomedical Campus, Phoenix
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15
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Deep Sequencing of the Rat MCAO Cortexes Reveals Crucial circRNAs Involved in Early Stroke Events and Their Regulatory Networks. Neural Plast 2021; 2021:9942537. [PMID: 34868302 PMCID: PMC8635952 DOI: 10.1155/2021/9942537] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 09/22/2021] [Accepted: 11/01/2021] [Indexed: 01/22/2023] Open
Abstract
Circular RNAs (circRNAs) are highly enriched in the central nervous system and significantly involved in a range of brain-related physiological and pathological processes. Ischemic stroke is a complex disorder caused by multiple factors; however, whether brain-derived circRNAs participate in the complex regulatory networks involved in stroke pathogenesis remains unknown. Here, we successfully constructed a cerebral ischemia-injury model of middle cerebral artery occlusion (MCAO) in male Sprague-Dawley rats. Preliminary qualitative and quantitative analyses of poststroke cortical circRNAs were performed through deep sequencing, and RT-PCR and qRT-PCR were used for validation. Of the 24,858 circRNAs expressed in the rat cerebral cortex, 294 circRNAs were differentially expressed in the ipsilateral cerebral cortex between the MCAO and sham rat groups. Cluster, GO, and KEGG analyses showed enrichments of these circRNAs and their host genes in numerous biological processes and pathways closely related to stroke. We selected 106 of the 294 circRNAs and constructed a circRNA-miRNA-mRNA interaction network comprising 577 sponge miRNAs and 696 target mRNAs. In total, 15 key potential circRNAs were predicted to be involved in the posttranscriptional regulation of a series of downstream target genes, which are widely implicated in poststroke processes, such as oxidative stress, apoptosis, inflammatory response, and nerve regeneration, through the competing endogenous RNA mechanism. Thus, circRNAs appear to be involved in multilevel actions that regulate the vast network of multiple mechanisms and events that occur after a stroke. These results provide novel insights into the complex pathophysiological mechanisms of stroke.
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16
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Lasek-Bal A, Binek Ł, Żak A, Student S, Krzan A, Puz P, Bal W, Uchwat U. Clinical and Non-Clinical Determinants of the Effect of Mechanical Thrombectomy and Post-Stroke Functional Status of Patients in Short and Long-Term Follow-Up. J Clin Med 2021; 10:5084. [PMID: 34768603 PMCID: PMC8584929 DOI: 10.3390/jcm10215084] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 10/10/2021] [Accepted: 10/26/2021] [Indexed: 01/07/2023] Open
Abstract
To date, inconsistent results evaluating the effect of parameters on mechanical thrombectomy (MT) outcomes in stroke-patients have been published. This study aimed to identify the key parameters for functional status after MT in stroke-patients in short and long-term follow-up. METHOD The study analysis focused on the relevance of selected clinical and non-clinical parameters to the functional status of the patients after MT. RESULTS 417 stroke-patients (mean age 67.8 ± 13.2 years) were qualified. Atrial fibrillation, and leukocytosis were significant for the neurological status on the first day of stroke (p = 0.036, and p = 0.0004, respectively). The parameters with the strongest effect on the functional status on day 10 were: age (p = 0.009), NIHSS (p = 0.002), hyperglycemia (p = 0.009), the result in TICI (p = 0.046), and first pass effect (p = 0.043). The parameters with the strongest effect on the functional status on day 365 were: age and NIHSS on the first day of stroke (p = 0.0002 and 0.002, respectively). Leukocytosis and the neurological status at baseline were key parameters associated with ICB after MT (p = 0.007 and p = 0.003, respectively). CONCLUSIONS Age and neurological status in the ultra-acute phase of stroke are crucial for the functional status in short and long-term observations of patients treated with mechanical thrombectomy. Atrial fibrillation, hyperglycemia, and inflammatory state are relevant to the short-term post-stroke functional status. First pass effect and the degree of post-interventional reperfusion are important technical parameters to the short-term functional status. Neurological status and white blood count during the acute phase are associated with a high rate of post-procedural intracranial bleeding.
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Affiliation(s)
- Anetta Lasek-Bal
- Department of Neurology, School of Health Sciences, Medical University of Silesia, 40-055 Katowice, Poland; (A.Ż.); (A.K.); (P.P.)
- Department of Neurology, Upper-Silesian Medical Centre, Medical University of Silesia, 40-055 Katowice, Poland; (Ł.B.); (U.U.)
| | - Łukasz Binek
- Department of Neurology, Upper-Silesian Medical Centre, Medical University of Silesia, 40-055 Katowice, Poland; (Ł.B.); (U.U.)
| | - Amadeusz Żak
- Department of Neurology, School of Health Sciences, Medical University of Silesia, 40-055 Katowice, Poland; (A.Ż.); (A.K.); (P.P.)
- Department of Neurology, Upper-Silesian Medical Centre, Medical University of Silesia, 40-055 Katowice, Poland; (Ł.B.); (U.U.)
| | - Sebastian Student
- Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, 44-100 Gliwice, Poland;
- Biotechnology Center, Silesian University of Technology, 44-100 Gliwice, Poland
| | - Aleksandra Krzan
- Department of Neurology, School of Health Sciences, Medical University of Silesia, 40-055 Katowice, Poland; (A.Ż.); (A.K.); (P.P.)
- Department of Neurology, Upper-Silesian Medical Centre, Medical University of Silesia, 40-055 Katowice, Poland; (Ł.B.); (U.U.)
| | - Przemysław Puz
- Department of Neurology, School of Health Sciences, Medical University of Silesia, 40-055 Katowice, Poland; (A.Ż.); (A.K.); (P.P.)
- Department of Neurology, Upper-Silesian Medical Centre, Medical University of Silesia, 40-055 Katowice, Poland; (Ł.B.); (U.U.)
| | - Wiesław Bal
- Department of Outpatient Chemotherapy, Maria Skłodowska-Curie Memorial Cancer Centre and Institute of Oncology, 44-101 Gliwice, Poland;
| | - Urszula Uchwat
- Department of Neurology, Upper-Silesian Medical Centre, Medical University of Silesia, 40-055 Katowice, Poland; (Ł.B.); (U.U.)
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Duan H, Li Z, Gu HQ, Zhou Q, Tong X, Ma G, Wang B, Jia B, Wang Y, Miao Z, Wang Y, Mo D. Myocardial Infarction Is Associated With Increased Stroke Severity, In-Hospital Mortality, and Complications: Insights From China Stroke Center Alliance Registries. J Am Heart Assoc 2021; 10:e021602. [PMID: 34612071 PMCID: PMC8751876 DOI: 10.1161/jaha.121.021602] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Background Prior studies have shown an increased risk of ischemic stroke (IS) after myocardial infarction (MI); however, there are limited studies concerning the characteristics, in‐hospital mortality, and complications of patients with IS with a medical history of MI. We hypothesized that patients with IS with a medical history of MI may experience more severe strokes and have a higher risk of in‐hospital mortality and complications than patients with IS without a medical history of MI. Methods and Results Consecutive in‐hospital data were extracted from the China Stroke Center Alliance database from August 2015 to July 2019. Patient characteristics, hospital tests, in‐hospital mortality, and complications were analyzed and compared in patients with IS with or without a history of MI. Of 893 429 patients with IS, we identified 81 646 (9.1%) patients with a history of MI (MI group). Compared with patients with IS without MI, MI group patients were older, had a lower prevalence of current smoking, had a higher prevalence of a relative medical history, and took more medications before admission. Compared with the group with IS without MI, the MI group had a higher National Institute of Health Stroke Scale score after onset (4.0 versus 3.0; Hodges‐Lehmann estimator, 22.5) and a higher proportion of severe strokes (National Institute of Health Stroke Scale score ≥15) (7.1% versus 4.4%; absolute standardized difference=11.6%). In the fully adjusted models, the risk of in‐hospital mortality was higher in the MI group (odds ratio [OR], 1.74; 95% CI, 1.57–1.92; P<0.0001). MI group patients also had a higher risk of complications, including urinary tract infection (OR, 1.28; 95% CI, 1.2–1.36; P<0.0001), gastrointestinal bleeding (OR, 1.29; 95% CI, 1.19–1.39; P<0.0001), pneumonia (OR, 1.24; 95% CI, 1.21–1.28; P<0.0001), depression (OR, 1.33; 95% CI, 1.24–1.42; P<0.0001), seizure (OR, 1.35; 95% CI, 1.22–1.49; P<0.0001), atrial fibrillation (OR, 1.78; 95% CI, 1.71–1.86; P<0.0001), and cardiac or respiratory arrest (OR, 1.98; 95% CI, 1.78–2.2; P<0.0001). Conclusions Patients with IS with a medical history of MI have an increased risk of severe stroke, in‐hospital mortality, and complications. Studies exploring the underlying mechanisms are needed to improve and tailor stroke treatment strategies.
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Affiliation(s)
- Hongzhou Duan
- Department of Interventional Neuroradiology Beijing Tiantan HospitalCapital Medical University Beijing China.,Department of Neurosurgery Peking University First Hospital Beijing China
| | - Zixiao Li
- Vascular Neurology Department of Neurology Beijing Tiantan HospitalCapital Medical University Beijing China.,China National Clinical Research Center for Neurological Diseases Beijing Tiantan HospitalCapital Medical University Beijing China.,Chinese Institute for Brain Research Beijing China.,National Center for Healthcare Quality Management in Neurological DiseasesBeijing Tiantan HospitalCapital Medical University Beijing China
| | - Hong-Qiu Gu
- China National Clinical Research Center for Neurological Diseases Beijing Tiantan HospitalCapital Medical University Beijing China.,National Center for Healthcare Quality Management in Neurological DiseasesBeijing Tiantan HospitalCapital Medical University Beijing China
| | - Qi Zhou
- China National Clinical Research Center for Neurological Diseases Beijing Tiantan HospitalCapital Medical University Beijing China.,National Center for Healthcare Quality Management in Neurological DiseasesBeijing Tiantan HospitalCapital Medical University Beijing China
| | - Xu Tong
- Department of Interventional Neuroradiology Beijing Tiantan HospitalCapital Medical University Beijing China
| | - Gaoting Ma
- Department of Interventional Neuroradiology Beijing Tiantan HospitalCapital Medical University Beijing China
| | - Bo Wang
- Department of Interventional Neuroradiology Beijing Tiantan HospitalCapital Medical University Beijing China
| | - Baixue Jia
- Department of Interventional Neuroradiology Beijing Tiantan HospitalCapital Medical University Beijing China
| | - Yilong Wang
- Vascular Neurology Department of Neurology Beijing Tiantan HospitalCapital Medical University Beijing China.,China National Clinical Research Center for Neurological Diseases Beijing Tiantan HospitalCapital Medical University Beijing China
| | - Zhongrong Miao
- Department of Interventional Neuroradiology Beijing Tiantan HospitalCapital Medical University Beijing China
| | - Yongjun Wang
- Vascular Neurology Department of Neurology Beijing Tiantan HospitalCapital Medical University Beijing China.,China National Clinical Research Center for Neurological Diseases Beijing Tiantan HospitalCapital Medical University Beijing China.,National Center for Healthcare Quality Management in Neurological DiseasesBeijing Tiantan HospitalCapital Medical University Beijing China
| | - Dapeng Mo
- Department of Interventional Neuroradiology Beijing Tiantan HospitalCapital Medical University Beijing China
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18
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Deng G, Xiao J, Yu H, Chen M, Shang K, Qin C, Tian DS. Predictors of futile recanalization after endovascular treatment in acute ischemic stroke: a meta-analysis. J Neurointerv Surg 2021; 14:881-885. [PMID: 34544824 DOI: 10.1136/neurintsurg-2021-017963] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/24/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND Despite successful recanalization after endovascular treatment, many patients with acute ischemic stroke due to large vessel occlusion still show functional dependence, namely futile recanalization. METHODS PubMed and Embase were searched up to April 30, 2021. Studies that reported risk factors for futile recanalization following endovascular treatment of acute ischemic stroke were included. The mean difference (MD) or odds ratio (OR) and 95% confidence interval (95% CI) of each study were pooled for a meta-analysis. RESULTS Twelve studies enrolling 2138 patients were included. The pooled analysis showed that age (MD 5.81, 95% CI 4.16 to 7.46), female sex (OR 1.40, 95% CI 1.16 to 1.68), National Institutes of Health Stroke Scale (NIHSS) score (MD 4.22, 95% CI 3.38 to 5.07), Alberta Stroke Program Early CT Score (ASPECTS) (MD -0.71, 95% CI -1.23 to -0.19), hypertension (OR 1.73, 95% CI 1.43 to 2.09), diabetes (OR 1.78, 95% CI 1.41 to 2.24), atrial fibrillation (OR 1.24, 95% CI 1.01 to 1.51), admission systolic blood pressure (MD 4.98, 95% CI 1.87 to 8.09), serum glucose (MD 0.59, 95% CI 0.37 to 0.81), internal carotid artery occlusion (OR 1.85, 95% CI 1.17 to 2.95), pre-treatment intravenous thrombolysis (OR 0.67, 95% CI 0.55 to 0.83), onset-to-puncture time (MD 16.92, 95% CI 6.52 to 27.31), puncture-to-recanalization time (MD 12.37, 95% CI 7.96 to 16.79), and post-treatment symptomatic intracerebral hemorrhage (OR 6.09, 95% CI 3.18 to 11.68) were significantly associated with futile recanalization. CONCLUSION This study identified female sex, comorbidities, admission systolic blood pressure, serum glucose, occlusion site, non-bridging therapy, and post-procedural complication as predictors of futile recanalization, and also confirmed previously reported factors. Further large-scale prospective studies are needed.
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Affiliation(s)
- Gang Deng
- Department of Neurology, Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jun Xiao
- Department of Neurology, Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Haihan Yu
- Department of Neurology, Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Man Chen
- Department of Neurology, Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ke Shang
- Department of Neurology, Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Chuan Qin
- Department of Neurology, Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Dai-Shi Tian
- Department of Neurology, Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, China
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19
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Cai H, Han Y, Sun W, Zha M, Shi X, Huang K, Yang Q, Wang X, Liu R, Liu X. Delayed neurological improvement is predictive to long-term clinical outcome on endovascular thrombectomy patients. Interv Neuroradiol 2021; 28:404-410. [PMID: 34515554 PMCID: PMC9326861 DOI: 10.1177/15910199211038207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES This study aims at exploring the 3-month outcome predicting ability of delayed neurological improvement and the cause of delayed neurological improvement. MATERIALS AND METHODS Early neurological improvement and delayed neurological improvement were calculated to represent the neurological improvements. Good functional outcome was defined as a 90-day modified Rankin Scale score 0-2. We used multivariant logistic regression to explore the influential factors of good functional outcome as well as delayed neurological improvement. We applied net reclassification improvement and integrated discrimination improvement to assess the quantitative improvement of the predictive model. RESULTS Early neurological improvement was observed in 50 (23%) patients and delayed neurological improvement exhibited in 67 (30%) patients. Early neurological improvement and delayed neurological improvement were both independent predictive factors to good functional outcome. In the basic model (adjusted for age, admission glucose level, baseline National Institute of Health Stroke Scale, and complications and number of retrieval attempts), early neurological improvement and delayed neurological improvement statistically improved the predictive ability (early neurological improvement: net reclassification improvement = 0.34, 95% confidence interval, 95% confidential interval (0.06, 0.69); integrated discrimination improvement = 0.05, p < 0.001; delayed neurological improvement: net reclassification improvement = 0.79, 95% confidential interval (0.47, 1.12); integrated discrimination improvement = 0.14, p < 0.001) delayed neurological improvement could predict clinical outcomes more accurately than early neurological improvement (early neurological improvement vs. delayed neurological improvement: integrated discrimination improvement = 0.09, p < 0.001). Moreover, delayed neurological improvement was affected by hypertension (odds ratio = 0.40, 95% CI (0.18, 0.88), p = 0.02), early neurological improvement (odds ratio = 20.10, 95% confidential interval (8.24, 19.02), p < 0.001), number of retrieval attempts (odds ratio = 0.39, 95% confidential interval (0.24, 0.66), p < 0.001), and complication (odds ratio = 0.25, 95% confidential interval (0.12, 0.54), p < 0.001). CONCLUSIONS Delayed neurological improvement could predict clinical outcomes more accurately than early neurological improvement. Hypertension, early neurological improvement, numbers of retrieval attempts, and complications were all predicting factors to delayed neurological improvement.
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Affiliation(s)
- Haodi Cai
- Department of Neurology, 12579Medical School of Southeast University, Jinling Hospital, China
| | - Yunfei Han
- Department of Neurology, 12579Medical School of Southeast University, Jinling Hospital, China
| | - Wen Sun
- Stroke Center and Department of Neurology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, 12652University of Science and Technology of China, China
| | - Mingming Zha
- Department of Neurology, 12579Medical School of Southeast University, Jinling Hospital, China
| | - Xuan Shi
- Department of Neurology, 12581Medical School of Nanjing University, Jinling Hospital, China
| | - Kangmo Huang
- Department of Neurology, 12581Medical School of Nanjing University, Jinling Hospital, China
| | - Qingwen Yang
- Department of Neurology, 12579Medical School of Southeast University, Jinling Hospital, China
| | - Xiaoke Wang
- Department of Neurology, 12581Medical School of Nanjing University, Jinling Hospital, China
| | - Rui Liu
- Department of Neurology, 12579Medical School of Southeast University, Jinling Hospital, China
| | - Xinfeng Liu
- Department of Neurology, 12579Medical School of Southeast University, Jinling Hospital, China
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20
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Hendrix P, Melamed I, Collins M, Lieberman N, Sharma V, Goren O, Zand R, Schirmer CM, Griessenauer CJ. NIHSS 24 h After Mechanical Thrombectomy Predicts 90-Day Functional Outcome. Clin Neuroradiol 2021; 32:401-406. [PMID: 34402916 DOI: 10.1007/s00062-021-01068-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 07/12/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Mechanical thrombectomy (MT) for large vessel occlusion (LVO) ischemic stroke is a safe and effective treatment modality. The National Institute of Health Stroke Scale (NIHSS) 24 h after MT (24 h-NIHSS) was shown to serve as the strongest surrogate for 90-day functional outcome. Here, we seek to externally validate 24 h-NIHSS as predictor for 90-day functional outcome and explore additional variables in this context. METHODS Patients treated for anterior LVO between February 2016 and August 2020 with premorbid mRS < 3 were included. Receiver operating characteristics were used to compare different NIHSS-related surrogates, such as baseline (B) NIHSS, 24 h-NIHSS, Δ‑NIHSS and percent (%) change NIHSS to predict favorable function outcome (mRS 0-2). Additional analysis was performed to assess predictors associated with poor outcome despite reaching the best predictor threshold. RESULTS A total of 337 eligible cases were identified. The 24 h-NIHSS outperformed B‑NIHSS, Δ‑NIHSS, and %‑NIHSS in terms of 90-day mRS 0-2 prediction. A 24-NIHSS ≤ 8 was identified as the optimal binary threshold. Multivariable analysis demonstrated that 24-NIHSS ≤ 8 and younger patient age were independently associated with mRS 0-2. Despite achieving 24 h-NIHSS ≤ 8, 23/143 (16.1%) cases experienced poor outcome (mRS 4-6). Older age, higher baseline NIHSS, coexisting chronic kidney disease, and longer hospital stay were independent predictors for poor outcome despite achieving 24 h-NIHSS ≤ 8. CONCLUSION An NIHSS of 8 or less 24 h after MT was validated to serve as an independent, strong surrogate for favorable functional outcome; however, cofactors such as older age, higher baseline NIHSS and coexisting comorbidities appear to mitigate this clinical adjunct.
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Affiliation(s)
- Philipp Hendrix
- Department of Neurosurgery, Geisinger, Danville, PA, USA.,Department of Neurosurgery, Saarland University Medical Center, Homburg, Germany
| | - Itay Melamed
- Department of Neurosurgery, Geisinger, Danville, PA, USA
| | - Malie Collins
- Geisinger Commonwealth School of Medicine, Scranton, PA, USA
| | - Noah Lieberman
- Geisinger Commonwealth School of Medicine, Scranton, PA, USA
| | - Vaibhav Sharma
- Geisinger Commonwealth School of Medicine, Scranton, PA, USA
| | - Oded Goren
- Department of Neurosurgery, Geisinger, Danville, PA, USA
| | - Ramin Zand
- Department of Neurology, Geisinger, Danville, PA, USA
| | - Clemens M Schirmer
- Department of Neurosurgery, Geisinger, Danville, PA, USA.,Research Institute of Neurointervention, Paracelsus Medical University, Salzburg, Austria
| | - Christoph J Griessenauer
- Department of Neurosurgery, Geisinger, Danville, PA, USA. .,Research Institute of Neurointervention, Paracelsus Medical University, Salzburg, Austria. .,Department of Neurosurgery, Christian Doppler Klinik, Paracelsus Medical University, Salzburg, Austria.
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