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Oraby MI, Gomaa R, Abdel-Aal AA, Hussein M. Cerebral microbleeds in acute ischemic stroke after intravenous thrombolysis and their impact on short term outcome of stroke. Int J Neurosci 2024:1-9. [PMID: 39159153 DOI: 10.1080/00207454.2024.2394779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 06/19/2024] [Accepted: 08/16/2024] [Indexed: 08/21/2024]
Abstract
OBJECTIVES Strong evidence suggests the occurrence of cerebral microbleeds (CMBs) in 5-13% of stroke patients within the first week after stroke onset. The aim of this work was to study risk factors associated with occurrence of CMBs in patients with stroke who received intravenous thrombolysis, and to clarify their impact on the clinical outcome. METHODS This prospective observational study was conducted on 61 acute ischemic stroke patients eligible for treatment with recombinant tissue plasminogen activator (rt-PA). Assessment of stroke-related neurologic deficit was done using National Institute of Health Stroke Scale (NIHSS). Assessment of stroke related disability after 3 months from stroke onset was done using Modified Rankin Scale (mRS). CMBs were detected by T2*-weighed gradient-recalled echo (T2*-GRE) and susceptibility-weighted imaging (SWI) magnetic resonance imaging (MRI) sequences. RESULTS There was a statistically significant impact of age, mean arterial pressure (MAP) at stroke onset, history of hypertension (HTN), and white matter changes assessed by Fazekas scale on the occurrence of CMBs in the included stroke patients (P-value= 0.002, <0.001, <0.001, 0.008 respectively). There was no statistically significant difference between patients with favorable and those with unfavorable outcome regarding the total number of CMBs (P-value =0.542). There was also no statistically significant difference between patients who developed complications from rt-PA and those who didn't develop regarding the total number of CMBs (P-value =0.186). CONCLUSION Cerebral microbleeds are more likely to occur in older stroke patients and in those who had high MAP at stroke onset, history of HTN, and white matter changes.
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Affiliation(s)
| | - Rana Gomaa
- Neurology Department, Beni-Suef University, Beni-Suef, Egypt
| | | | - Mona Hussein
- Neurology Department, Beni-Suef University, Beni-Suef, Egypt
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Zhang C, Wu JC, Tan Z, He XL, Li F, Wang L, Wang Y. Left ventricular systolic dysfunction predicts clinical prognosis in patients with acute ischemic stroke after intravenous thrombolysis. Aging (Albany NY) 2024; 16:7845-7855. [PMID: 38700495 PMCID: PMC11132000 DOI: 10.18632/aging.205786] [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: 11/14/2023] [Accepted: 03/09/2024] [Indexed: 05/05/2024]
Abstract
BACKGROUND Although intravenous recombinant tissue plasminogen activator (rt-PA) thrombolysis is the most effective early treatment for acute ischemic stroke (AIS), outcomes vary greatly among patients. Left ventricular systolic dysfunction (LVSD) is prone to distant organ ischemia and may be a predictor for poor prognosis in AIS patients undergoing intravenous thrombolysis (IVT). Our aim was to investigate the predictivity of LVSD diagnosis (as measured by left ventricular ejection fraction (LVEF)) on 90-day clinical outcomes in AIS patients undergoing thrombolysis. METHODS The current prospective cohort study continuously enrolled 273 AIS patients from the National Stroke Prevention and Treatment Engineering Management Special Database who underwent IVT and completed echocardiography within 24 h of admission between 2021 and 2023. LVSD was examined by evaluation of the echocardiographic LVEF values using Simpson's biplane method of discs in line with international guidelines, and defined as a LVEF value < 50%. Multivariable ordinal logistic regression model was performed to analyze the association between LVEF and functional outcome at 3 months. Restricted cubic spline (RCS) was used to examine the shape of the dose-response association between reduced LVEF and poor functional outcomes. Subgroup analysis was also employed to further verify the reliability and practicability of the results. RESULTS Baseline data analysis showed LVSD patients had more comorbidities including on multivariate analyses, LVSD (OR 2.78, 95% CI 1.23 to 6.24, P=0.014), pre-existing diabetes mellitus (OR 2.08, 95% CI 1.11 to 3.90, P=0.023) and NIHSS on arrival (OR 1.31, 95% CI 1.21 to 1.49, P<0.001) were independent predictors of poor functional outcomes (mRS ≥ 3) at 3 months. Multivariable-adjusted spline regression indicated a linear dose-response association between LVEF after IVT and poor functional outcomes (p for linearity < 0.001), with the optimal cutoff values of LVEF being 0.48. CONCLUSIONS Our finding indicated that AIS patients with LVSD after IVT had poorer outcomes, suggesting the need to monitor and optimize LVEF in stroke management.
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Affiliation(s)
- Chi Zhang
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei 230011, Anhui, China
- Department of Neurology, Hefei Hospital Affiliated to Anhui Medical University (The Second People’s Hospital of Hefei), Hefei 230011, Anhui, China
| | - Jun-Cang Wu
- Department of Neurology, Hefei Hospital Affiliated to Anhui Medical University (The Second People’s Hospital of Hefei), Hefei 230011, Anhui, China
| | - Zheng Tan
- Department of Neurology, Hefei Hospital Affiliated to Anhui Medical University (The Second People’s Hospital of Hefei), Hefei 230011, Anhui, China
| | - Xiao-Lu He
- Department of Neurology, Hefei Hospital Affiliated to Anhui Medical University (The Second People’s Hospital of Hefei), Hefei 230011, Anhui, China
| | - Fei Li
- Department of Neurology, Hefei Hospital Affiliated to Anhui Medical University (The Second People’s Hospital of Hefei), Hefei 230011, Anhui, China
| | - Long Wang
- Department of Neurology, Hefei Hospital Affiliated to Anhui Medical University (The Second People’s Hospital of Hefei), Hefei 230011, Anhui, China
| | - Yu Wang
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei 230011, Anhui, China
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Tawakul A, Toro AR, Romero JR. Acute cerebral microbleeds detected on high resolution head CT presenting with transient neurologic events. CEREBRAL CIRCULATION - COGNITION AND BEHAVIOR 2024; 6:100207. [PMID: 38312310 PMCID: PMC10837056 DOI: 10.1016/j.cccb.2024.100207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 12/26/2023] [Accepted: 01/16/2024] [Indexed: 02/06/2024]
Abstract
Introduction Cerebral microbleeds (CMBs) are deposits of hemosiderin-laden macrophages that can be visualized on T2-weighted MRI sequences as small, ovoid areas of signal void. These markers represent hemorrhagic cerebral small vessel disease and are usually subclinical and asymptomatic. In these cases, we present two patients who presented with symptomatic, acute CMBs. Case description Case 1 involves a 70-year-old male with history of diabetes, hypertension, hyperlipidemia, and obstructive sleep apnea. Five days prior to presentation, this patient reported a transient period of left upper extremity weakness. CT was performed and demonstrated a lesion on CT imaging consistent with an acute CMB in the R centrum semiovale.Case 2 describes an 82-year-old female with history of hypertension, remote large ischemic stroke, and post-stroke epilepsy. Patient described an episode of prolonged left sided shaking consistent with prior seizures despite her consistently taking anti-epileptic drugs. On CT, a small hyperdensity was seen in the R thalamus/internal capsule region consistent with acute CMB. Discussion These two examples demonstrate acute CMBs causing patients to demonstrate symptoms mirroring those of a TIA and experience breakthrough seizures. A TIA would normally be an indication for antiplatelet therapy. Though prior reasoning warns against anticoagulation in patients with CMBs, recent works including the SPS3 (Shoamanesh et al., 2017) and WAKE-UP (Schlemm et al., 2022) trials both showed that the presence of CMB did not significantly affect outcomes after initiating antiplatelet therapy. One should adopt a more personalized approach when deciding the therapeutic intervention of choice in patients with prior CMB.
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Affiliation(s)
- Abdullah Tawakul
- Department of Medicine, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
- Department of Neurology, Boston University School of Medicine, Boston, MA, 725 Albany St, Boston, MA 02118, United States
| | - Arturo R Toro
- Chobanian Avedisian School of Medicine, Boston University School of Medicine, 715 Albany Street, 72 East Concord St. Boston, MA 02118-2526, United States
| | - José Rafael. Romero
- NHLBI's Framingham Heart Study, Framingham, MA, United States
- Department of Neurology, Boston University School of Medicine, Boston, MA, 725 Albany St, Boston, MA 02118, United States
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Tipirneni S, Stanwell P, Weissert R, Bhaskar SMM. Prevalence and Impact of Cerebral Microbleeds on Clinical and Safety Outcomes in Acute Ischaemic Stroke Patients Receiving Reperfusion Therapy: A Systematic Review and Meta-Analysis. Biomedicines 2023; 11:2865. [PMID: 37893237 PMCID: PMC10604359 DOI: 10.3390/biomedicines11102865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 10/15/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
BACKGROUND Cerebral microbleeds (CMBs), a notable neuroimaging finding often associated with cerebral microangiopathy, demonstrate a heightened prevalence in patients diagnosed with acute ischemic stroke (AIS), which is in turn linked to less favourable clinical prognoses. Nevertheless, the exact prevalence of CMBs and their influence on post-reperfusion therapy outcomes remain inadequately elucidated. MATERIALS AND METHODS Through systematic searches of PubMed, Embase and Cochrane databases, studies were identified adhering to specific inclusion criteria: (a) AIS patients, (b) age ≥ 18 years, (c) CMBs at baseline, (d) availability of comparative data between CMB-positive and CMB-negative groups, along with relevant post-reperfusion therapy outcomes. The data extracted were analysed using forest plots of odds ratios, and random-effects modelling was applied to investigate the association between CMBs and symptomatic intracerebral haemorrhage (sICH), haemorrhagic transformation (HT), 90-day functional outcomes, and 90-day mortality post-reperfusion therapy. RESULTS In a total cohort of 9776 AIS patients who underwent reperfusion therapy, 1709 had CMBs, with a pooled prevalence of 19% (ES 0.19; 95% CI: 0.16, 0.23, p < 0.001). CMBs significantly increased the odds of sICH (OR 2.57; 95% CI: 1.72; 3.83; p < 0.0001), HT (OR 1.53; 95% CI: 1.25; 1.88; p < 0.0001), as well as poor functional outcomes at 90 days (OR 1.59; 95% CI: 1.34; 1.89; p < 0.0001) and 90-day mortality (OR 1.65; 95% CI: 1.27; 2.16; p < 0.0001), relative to those without CMBs, in AIS patients undergoing reperfusion therapy (encompassing intravenous thrombolysis [IVT], endovascular thrombectomy [EVT], either IVT or EVT, and bridging therapy). Variations in the level of association can be observed among different subgroups of reperfusion therapy. CONCLUSIONS This meta-analysis underscores a significant association between CMBs and adverse postprocedural safety outcomes encompassing sICH, HT, poor functional outcome, and increased mortality in AIS patients undergoing reperfusion therapy. The notable prevalence of CMBs in both the overall AIS population and those undergoing reperfusion therapy emphasizes their importance in post-stroke prognostication.
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Affiliation(s)
- Shraddha Tipirneni
- Global Health Neurology Lab, Sydney, NSW 2150, Australia
- UNSW Medicine and Health, South Western Sydney Clinical Campuses, University of New South Wales (UNSW), Sydney, NSW 2170, Australia
- Neurovascular Imaging Laboratory, Ingham Institute for Applied Medical Research, Clinical Sciences Stream, Sydney, NSW 2170, Australia
| | - Peter Stanwell
- School of Health Sciences, University of Newcastle, Newcastle, NSW 2308, Australia
| | - Robert Weissert
- Department of Neurology, Regensburg University Hospital, University of Regensburg, 93053 Regensburg, Germany
| | - Sonu M. M. Bhaskar
- Global Health Neurology Lab, Sydney, NSW 2150, Australia
- Neurovascular Imaging Laboratory, Ingham Institute for Applied Medical Research, Clinical Sciences Stream, Sydney, NSW 2170, Australia
- NSW Brain Clot Bank, NSW Health Pathology, Sydney, NSW 2170, Australia
- Department of Neurology & Neurophysiology, Liverpool Hospital & South Western Sydney Local Health District (SWSLHD), Liverpool, NSW 2170, Australia
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Elfil M, Ghaith HS, Bayoumi A, Elmashad A, Aladawi M, Al-Ani M, Najdawi Z, Mammadli G, Russo B, Toth G, Nour M, Asif K, Nguyen TN, Gandhi CD, Kaur G, Hussain MS, Czap AL, El-Ghanem M, Mansour OY, Khandelwal P, Mayer S, Al-Mufti F. Impact of pre-treatment cerebral microbleeds on the outcomes of endovascular thrombectomy: A systematic review and meta-analysis. J Stroke Cerebrovasc Dis 2023; 32:107324. [PMID: 37660553 DOI: 10.1016/j.jstrokecerebrovasdis.2023.107324] [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: 07/11/2023] [Revised: 08/18/2023] [Accepted: 08/21/2023] [Indexed: 09/05/2023] Open
Abstract
OBJECTIVE/AIM To investigate the effect of cerebral microbleeds (CMBs) on the functional and safety outcomes of endovascular thrombectomy (EVT) in patients with acute ischemic stroke (AIS) due to large vessel occlusion (LVO). METHODS This study followed the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines for systematic review and meta-analysis. We included observational studies that recruited AIS-LVO patients, used susceptibility-sensitive magnetic resonance imaging (MRI) to detect CMBs, and examined the association between them and predefined outcome events. The extracted data included study and population characteristics, risk of bias domains, and outcome measures. The outcomes of interest included functional independence, revascularization success, procedural and hemorrhagic adverse events. We conducted a meta-analysis using the Mantel-Haenszel method and calculated the risk ratios. RESULTS Four studies with a total of 1,514 patients were included. A significant reduction in the likelihood of achieving a favorable functional outcome was observed in patients with CMBs (Risk ratio (RR) 0.69, 95% confidence interval (CI): 0.52 to 0.91, P=0.01). No significant differences were observed between the CMBs and no CMBs groups in terms of successful revascularization, mortality, intracranial hemorrhage (ICH), subarachnoid hemorrhage (SAH), and parenchymal hematoma. CONCLUSIONS The presence of CMBs significantly reduced the likelihood of achieving functional independence post-EVT in AIS-LVO patients. However, CMBs did not impact the rates of successful revascularization, mortality, or the occurrence of various hemorrhagic events. Future research should explore the mechanisms of this association and strategies to mitigate its impact.
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Affiliation(s)
- Mohamed Elfil
- Department of Neurological Sciences, University of Nebraska Medical Center, Omaha, NE, USA
| | | | - Ahmed Bayoumi
- Department of Neurology, McGovern Medical School, UTHealth, Houston, TX, USA
| | - Ahmed Elmashad
- Department of Neurology, Yale University, New Haven, CT, USA
| | - Mohammad Aladawi
- Department of Neurological Sciences, University of Nebraska Medical Center, Omaha, NE, USA
| | - Mina Al-Ani
- Department of Radiology, SUNY Downstate Health Sciences University, Brooklyn, NY, USA
| | - Zaid Najdawi
- Department of Neurological Sciences, University of Nebraska Medical Center, Omaha, NE, USA
| | - Gular Mammadli
- Department of Neurology, Westchester Medical Center, Valhalla, NY, USA
| | - Brittany Russo
- Department of Neurology, Westchester Medical Center, Valhalla, NY, USA
| | - Gabor Toth
- Cerebrovascular Center, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA
| | - May Nour
- Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Kaiz Asif
- Ascension Health and University of Illinois-Chicago, Chicago, IL, USA
| | - Thanh N Nguyen
- Department of Neurology, Boston University Chobanian and Avedisian School of Medicine, Boston, MA, USA
| | - Chirag D Gandhi
- Department of Neurosurgery, Westchester Medical Center, Valhalla, NY, USA
| | - Gurmeen Kaur
- Department of Neurosurgery, Westchester Medical Center, Valhalla, NY, USA
| | - M Shazam Hussain
- Cerebrovascular Center, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Alexandra L Czap
- Department of Neurology, McGovern Medical School, UTHealth, Houston, TX, USA
| | - Mohammad El-Ghanem
- Neuroendovascular Surgery, HCA Houston Northwest/University of Houston College of Medicine, Houston, TX, USA
| | - Ossama Yassin Mansour
- Department of Neurology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Priyank Khandelwal
- Department of Neurosurgery, Rutgers New Jersey Medical School, Newark, NJ, USA
| | - Stephan Mayer
- Department of Neurology, Westchester Medical Center, Valhalla, NY, USA
| | - Fawaz Al-Mufti
- Department of Neurosurgery, Westchester Medical Center, Valhalla, NY, USA.
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Liu R, Shi X, Feng J, Piao J, Yang Z, Zhao Y, Yin H, Chen X. Ischemic Stroke and Cerebral Microbleeds: A Two-Sample Bidirectional Mendelian Randomization Study. Neurol Ther 2023; 12:1299-1308. [PMID: 37270442 PMCID: PMC10310681 DOI: 10.1007/s40120-023-00500-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 05/15/2023] [Indexed: 06/05/2023] Open
Abstract
INTRODUCTION Recent observational studies have reported the association between ischemic stroke (IS) and cerebral microbleeds (CMBs). Whether this reflects a causal association remains to be established. Herein, we adopted a two-sample bidirectional Mendelian randomization (MR) analysis to comprehensively evaluate the causal association of IS and CMBs. METHODS The summary-level genome-wide association studies (GWASs) data of IS were obtained from the GIGASTROKE consortium (62,100 European ancestry cases and 1,234,808 European ancestry controls). All IS cases could be further divided into large-vessel atherosclerosis stroke (LVS, n = 6399), cardio-embolic stroke (CES, n = 10,804) and small-vessel occlusion stroke (SVS, n = 6811). Meanwhile, we used publicly available summary statistics from published GWASs of CMBs (3556 of the 25,862 European participants across 2 large initiatives). A bidirectional MR analysis was conducted using inverse-variance weighting (IVW) as the major outcome, whereas MR-Egger and weighted median (WM) were used to complement the IVW estimates as they can provide more robust estimates in a broader set of scenarios but are less efficient (wider CIs). A Bonferroni-corrected threshold of p < 0.0125 was considered significant, and p values between 0.0125 and 0.05 were considered suggestive of evidence for a potential association. RESULTS We detected that higher risk of IS [IVW odds ratio (OR) 1.47, 95% confidence interval (CI) 1.04-2.07, p = 0.03] and SVS (IVW OR 1.62, 95% CI 1.07-2.47, p = 0.02) were significantly associated with CMBs. Reverse MR analyses found no significant evidence for a causal effect of CMBs on IS and its subtypes. CONCLUSIONS Our study provides potential evidence that IS and SVS are causally linked to increased risk of CMBs. Further research is needed to determine the mechanisms of association between IS and CMBs.
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Affiliation(s)
- Renjie Liu
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, 130021, Jilin, China
| | - Xin Shi
- Department of Radiology, The First Hospital of Jilin University, Changchun, 130021, Jilin, China
| | - Jiahui Feng
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, 130021, Jilin, China
| | - Jianmin Piao
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, 130021, Jilin, China
| | - Zhongxi Yang
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, 130021, Jilin, China
| | - Yuhao Zhao
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, 130021, Jilin, China
| | - Haoyuan Yin
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, 130021, Jilin, China.
| | - Xuan Chen
- Department of Neurovascular Surgery, The First Hospital of Jilin University, Changchun, 130021, Jilin, China.
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Leonte A, Laurent-Chabalier S, Wacongne A, Parvu T, Hackius M, Thouvenot E, Renard D. Brain hemorrhage on 24h-CT and functional outcome in stroke patients with cerebral amyloid angiopathy features on pre-thrombolysis MRI treated with intravenous thrombolysis: A case series. J Stroke Cerebrovasc Dis 2023; 32:106907. [PMID: 36442282 DOI: 10.1016/j.jstrokecerebrovasdis.2022.106907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/15/2022] [Accepted: 11/20/2022] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND AND OBJECTIVES In stroke patients treated with intravenous thrombolysis (IVT), presence and high number of strictly lobar cerebral microbleeds (compatible with cerebral amyloid angiopathy, CAA) seems to be associated with increased risk of hemorrhagic transformation, symptomatic hemorrhagic transformation, remote hemorrhage, and poor functional outcome. Some of these CAA patients with cerebral microbleeds also have chronic lobar intracerebral hemorrhage. Few data are available on IVT-treated CAA patients showing cortical superficial siderosis. There are no reports studying factors associated with brain hemorrhagic complication or functional outcome in IVT-treated CAA patients. We present a case series study of IVT-treated stroke patients with CAA features on pre-IVT MRI in whom we have evaluated brain hemorrhagic complications on 24 h-CT and functional outcome after IVT. MATERIAL AND METHODS In our stroke center, IVT decision in patients with CAA MRI features is at the physician's discretion. We retrospectively screened our stroke database between January 2015 and July 2022 for pre-IVT imaging of 959 consecutive IVT-treated stroke patients without ongoing anticoagulation therapy for probable CAA MRI features defined by modified Boston criteria. After exclusion of 119 patients with missing MRI (n = 47), MRI showing motion artefacts (n = 49) or with alternative chronic brain hemorrhage cause on MRI (n = 23), 15 IVT-treated patients with probable CAA on pre-IVT MRI were identified. In these 15 patients, clinical, biological and MRI characteristics were compared between patients with vs. without post-IVT hemorrhage and between patients with poor (MRS 3-6) vs. good (MRS 0-2) functional outcome at discharge. RESULTS Two patients showed brain hemorrhage on 24 h-CT and both died after 40 and 31 days respectively. The remaining patients had no brain hemorrhage and showed very good outcome except one. Atrial fibrillation (p = 0.029) and Fazekas scale (p = 0.029) were associated with brain hemorrhage whereas atrial fibrillation (p = 0.0022), NIHSS (p = 0.027), blood glucose level (p = 0.024), CRP (p = 0.022) and DWI ASPECT (p = 0.016) were associated with poor outcome. DISCUSSION Consequences of IVT in CAA patients can be dramatic. Larger studies are needed to compare IVT risks and outcome between CAA and non-CAA patients, also including CAA patients with chronic intracerebral hemorrhage or cortical superficial siderosis. In addition, future studies should try to identify clinical, biological and radiological features at high risk for brain hemorrhage and poor outcome in order to assess the risk-benefit ratio for IVT in CAA. CLINICAL TRIAL REGISTRATION-URL http://www. CLINICALTRIALS gov. Unique identifier: NCT05565144.
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Affiliation(s)
- Adelina Leonte
- Department of Neurology, CHU Nîmes, University Montpellier, CHU Nîmes, Hôpital Carémeau, 4, Rue du Pr Debré, Nîmes 30900, France
| | - Sabine Laurent-Chabalier
- Department of Biostatistics, Clinical Epidemiology, Public Health and Innovation in Methodology, CHU Nîmes, University Montpellier, Nîmes, France
| | - Anne Wacongne
- Department of Neurology, CHU Nîmes, University Montpellier, CHU Nîmes, Hôpital Carémeau, 4, Rue du Pr Debré, Nîmes 30900, France
| | - Teodora Parvu
- Department of Neurology, CHU Nîmes, University Montpellier, CHU Nîmes, Hôpital Carémeau, 4, Rue du Pr Debré, Nîmes 30900, France
| | - Marc Hackius
- Department of Neurology, CHU Nîmes, University Montpellier, CHU Nîmes, Hôpital Carémeau, 4, Rue du Pr Debré, Nîmes 30900, France
| | - Eric Thouvenot
- Department of Neurology, CHU Nîmes, University Montpellier, CHU Nîmes, Hôpital Carémeau, 4, Rue du Pr Debré, Nîmes 30900, France; Institut de Génomique Fonctionnelle, CNRS UMR5203, INSERM 1191, University Montpellier, Montpellier, France
| | - Dimitri Renard
- Department of Neurology, CHU Nîmes, University Montpellier, CHU Nîmes, Hôpital Carémeau, 4, Rue du Pr Debré, Nîmes 30900, France.
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Exploring the Impact of Cerebral Microbleeds on Stroke Management. Neurol Int 2023; 15:188-224. [PMID: 36810469 PMCID: PMC9944881 DOI: 10.3390/neurolint15010014] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/17/2023] [Accepted: 01/26/2023] [Indexed: 02/04/2023] Open
Abstract
Stroke constitutes a major cause of functional disability and mortality, with increasing prevalence. Thus, the timely and accurate prognosis of stroke outcomes based on clinical or radiological markers is vital for both physicians and stroke survivors. Among radiological markers, cerebral microbleeds (CMBs) constitute markers of blood leakage from pathologically fragile small vessels. In the present review, we evaluated whether CMBs affect ischemic and hemorrhagic stroke outcomes and explored the fundamental question of whether CMBs may shift the risk-benefit balance away from reperfusion therapy or antithrombotic use in acute ischemic stroke patients. A literature review of two databases (MEDLINE and Scopus) was conducted to identify all the relevant studies published between 1 January 2012 and 9 November 2022. Only full-text articles published in the English language were included. Forty-one articles were traced and included in the present review. Our findings highlight the utility of CMB assessments, not only in the prognostication of hemorrhagic complications of reperfusion therapy, but also in forecasting hemorrhagic and ischemic stroke patients' functional outcomes, thus indicating that a biomarker-based approach may aid in the provision of counseling for patients and families, improve the selection of more appropriate medical therapies, and contribute to a more accurate choice of patients for reperfusion therapy.
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Sun J, Lam C, Christie L, Blair C, Li X, Werdiger F, Yang Q, Bivard A, Lin L, Parsons M. Risk factors of hemorrhagic transformation in acute ischaemic stroke: A systematic review and meta-analysis. Front Neurol 2023; 14:1079205. [PMID: 36891475 PMCID: PMC9986457 DOI: 10.3389/fneur.2023.1079205] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 01/31/2023] [Indexed: 02/22/2023] Open
Abstract
Background Hemorrhagic transformation (HT) following reperfusion therapies for acute ischaemic stroke often predicts a poor prognosis. This systematic review and meta-analysis aims to identify risk factors for HT, and how these vary with hyperacute treatment [intravenous thrombolysis (IVT) and endovascular thrombectomy (EVT)]. Methods Electronic databases PubMed and EMBASE were used to search relevant studies. Pooled odds ratio (OR) with 95% confidence interval (CI) were estimated. Results A total of 120 studies were included. Atrial fibrillation and NIHSS score were common predictors for any intracerebral hemorrhage (ICH) after reperfusion therapies (both IVT and EVT), while a hyperdense artery sign (OR = 2.605, 95% CI 1.212-5.599, I 2 = 0.0%) and number of thrombectomy passes (OR = 1.151, 95% CI 1.041-1.272, I 2 = 54.3%) were predictors of any ICH after IVT and EVT, respectively. Common predictors for symptomatic ICH (sICH) after reperfusion therapies were age and serum glucose level. Atrial fibrillation (OR = 3.867, 95% CI 1.970-7.591, I 2 = 29.1%), NIHSS score (OR = 1.082, 95% CI 1.060-1.105, I 2 = 54.5%) and onset-to-treatment time (OR = 1.003, 95% CI 1.001-1.005, I 2 = 0.0%) were predictors of sICH after IVT. Alberta Stroke Program Early CT score (ASPECTS) (OR = 0.686, 95% CI 0.565-0.833, I 2 =77.6%) and number of thrombectomy passes (OR = 1.374, 95% CI 1.012-1.866, I 2 = 86.4%) were predictors of sICH after EVT. Conclusion Several predictors of ICH were identified, which varied by treatment type. Studies based on larger and multi-center data sets should be prioritized to confirm the results. Systematic review registration https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=268927, identifier: CRD42021268927.
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Affiliation(s)
- Jiacheng Sun
- Sydney Brain Centre, The Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia.,South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia
| | - Christina Lam
- Melbourne Brain Centre at Royal Melbourne Hospital, Melbourne, VIC, Australia.,Department of Medicine, University of Melbourne, Melbourne, VIC, Australia
| | - Lauren Christie
- Sydney Brain Centre, The Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia.,Allied Health Research Unit, St Vincent's Health Network Sydney, Sydney, NSW, Australia.,Faculty of Health Sciences, Australian Catholic University, North Sydney, NSW, Australia
| | - Christopher Blair
- Sydney Brain Centre, The Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia.,South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia.,Department of Neurology and Neurophysiology, Liverpool Hospital, Sydney, NSW, Australia
| | - Xingjuan Li
- Queensland Department of Agriculture and Fisheries, Brisbane, QLD, Australia
| | - Freda Werdiger
- Melbourne Brain Centre at Royal Melbourne Hospital, Melbourne, VIC, Australia.,Department of Medicine, University of Melbourne, Melbourne, VIC, Australia
| | - Qing Yang
- Apollo Medical Imaging Technology Pty Ltd., Melbourne, VIC, Australia
| | - Andrew Bivard
- Melbourne Brain Centre at Royal Melbourne Hospital, Melbourne, VIC, Australia.,Department of Medicine, University of Melbourne, Melbourne, VIC, Australia
| | - Longting Lin
- Sydney Brain Centre, The Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia.,South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia
| | - Mark Parsons
- Sydney Brain Centre, The Ingham Institute for Applied Medical Research, Liverpool, NSW, Australia.,South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia.,Department of Neurology and Neurophysiology, Liverpool Hospital, Sydney, NSW, Australia
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10
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Best JG, Jesuthasan A, Werring DJ. Cerebral small vessel disease and intracranial bleeding risk: Prognostic and practical significance. Int J Stroke 2023; 18:44-52. [PMID: 35658630 PMCID: PMC9806476 DOI: 10.1177/17474930221106014] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Balancing the risks of recurrent ischemia and antithrombotic-associated bleeding, particularly intracranial hemorrhage (ICH), is a key challenge in the secondary prevention of ischemic stroke and transient ischemic attack. In hyperacute ischemic stroke, the use of acute reperfusion therapies is determined by the balance of anticipated benefit and the risk of ICH. Cerebral small vessel disease (CSVD) causes most spontaneous ICH. Here, we review the evidence linking neuroimaging markers of CSVD to antithrombotic and thrombolytic-associated ICH, with emphasis on cerebral microbleeds (CMB). We discuss their role in the prediction of ICH, and practical implications for clinical decision making. Although current observational data suggest CMB presence should not preclude antithrombotic therapy in patients with ischemic stroke or TIA, they are useful for improving ICH risk prediction with potential relevance for determining the optimal secondary prevention strategy, including the use of left atrial appendage occlusion. Following ICH, recommencing antiplatelets is probably safe in most patients, while the inconclusive results of recent randomized controlled trials of anticoagulant use makes recruitment to ongoing trials (including those testing left atrial appendage occlusion) in this area a high priority. Concern regarding CSVD and ICH risk after hyperacute stroke treatment appears to be unjustified in most patients, though some uncertainty remains regarding patients with very high CMB burden and other risk factors for ICH. We encourage careful phenotyping for underlying CSVD in future trials, with the potential to enhance precision medicine in stroke.
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Affiliation(s)
| | | | - David J Werring
- David J Werring, Stroke Research Centre,
UCL Queen Square Institute of Neurology, University College London, Russell
Square House, 10 - 12 Russell Square, London, WC1B 5EH, UK.
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11
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Komatsu T, Kida H, Ozawa M, Mimori M, Kokubu T, Takahashi J, Kurihara S, Maku T, Motegi H, Takahashi M, Shiraishi T, Nakada R, Kitagawa T, Sato T, Takatsu H, Sakai K, Umehara T, Omoto S, Murakami H, Mitsumura H, Yokoo T, Iguchi Y. Urinary Immunoglobulin G Is Associated with Deep and Infratentorial Cerebral Microbleeds in Stroke Patients. Cerebrovasc Dis 2022; 52:417-426. [PMID: 36349751 DOI: 10.1159/000527019] [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: 05/04/2022] [Accepted: 09/03/2022] [Indexed: 09/05/2023] Open
Abstract
BACKGROUND Cerebral microbleeds (CMBs) detected on susceptibility-weighted imaging (SWI) are associated with cerebral small vessel disease. Chronic kidney disease and microalbuminuria have been associated with the presence of CMBs in stroke patients. Urinary immunoglobulin G (IgG) is measured to document glomerular injury; however, the relationship between urinary IgG and CMBs is unknown. METHODS We retrospectively enrolled consecutive patients who had been admitted with transient ischemic attack (TIA) or ischemic stroke and identified those who had undergone SWI and a spot urine test. The location of CMBs was classified on magnetic resonance imaging as strictly lobar, deep/infratentorial (D/I), or mixed areas. We analyzed the association between urinary IgG and the presence and location of CMBs. RESULTS We included 298 patients (86 female, median age 70 years, median eGFR 65.8 mL/min/1.73 m2). Positive urinary IgG and CMB results were found in 58 (19%) and 160 patients (54%), respectively. Urinary IgG positivity was significantly associated with CMBs compared with non-CMBs (28% vs. 9%, p < 0.001), and with D/I or mixed CMBs compared with non-D/I or mixed CMBs (34% vs. 10%, p < 0.001). Multivariate analysis revealed that urinary IgG and hypertension positivity were strongly associated with D/I or mixed CMBs (OR 3.479, 95% CI: 1.776-6.818, p < 0.001; OR 3.415, 95% CI: 1.863-6.258, p < 0.001). CONCLUSIONS Urinary IgG was associated with the prevalence of D/I or mixed location CMBs in TIA or ischemic stroke patients. Our findings provide new insights into the association between urinary IgG and the distribution of CMBs.
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Affiliation(s)
- Teppei Komatsu
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Hiroyuki Kida
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Masakazu Ozawa
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Masahiro Mimori
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Tatsushi Kokubu
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Junichiro Takahashi
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Sumire Kurihara
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Takahiro Maku
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Haruhiko Motegi
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Maki Takahashi
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Tomotaka Shiraishi
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Ryoji Nakada
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Tomomichi Kitagawa
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Takeo Sato
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Hiroki Takatsu
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Kenichiro Sakai
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Tadashi Umehara
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Shusaku Omoto
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Hidetomo Murakami
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Hidetaka Mitsumura
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
| | - Takashi Yokoo
- Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Yasuyuki Iguchi
- Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
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12
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Fischer U, Branca M, Bonati LH, Carrera E, Vargas MI, Platon A, Kulcsar Z, Wegener S, Luft A, Seiffge DJ, Arnold M, Michel P, Strambo D, Dunet V, De Marchis GM, Schelosky L, Andreisek G, Barinka F, Peters N, Fisch L, Nedeltchev K, Cereda CW, Kägi G, Bolognese M, Salmen S, Sturzenegger R, Medlin F, Berger C, Renaud S, Bonvin C, Schaerer M, Mono ML, Rodic B, Psychogios M, Mordasini P, Gralla J, Kaesmacher J, Meinel TR. MRI or CT for Suspected Acute Stroke: Association of Admission Image Modality with Acute Recanalization Therapies, Workflow Metrics and Outcomes. Ann Neurol 2022; 92:184-194. [PMID: 35599442 PMCID: PMC9545922 DOI: 10.1002/ana.26413] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 04/23/2022] [Accepted: 05/13/2022] [Indexed: 11/17/2022]
Abstract
Objective To examine rates of intravenous thrombolysis (IVT), mechanical thrombectomy (MT), door‐to‐needle (DTN) time, door‐to‐puncture (DTP) time, and functional outcome between patients with admission magnetic resonance imaging (MRI) versus computed tomography (CT). Methods An observational cohort study of consecutive patients using a target trial design within the nationwide Swiss‐Stroke‐Registry from January 2014 to August 2020 was carried out. Exclusion criteria included MRI contraindications, transferred patients, and unstable or frail patients. Multilevel mixed‐effects logistic regression with multiple imputation was used to calculate adjusted odds ratios with 95% confidence intervals for IVT, MT, DTN, DTP, and good functional outcome (mRS 0–2) at 90 days. Results Of the 11,049 patients included (mean [SD] age, 71 [15] years; 4,811 [44%] women; 69% ischemic stroke, 16% transient ischemic attack, 8% stroke mimics, 6% intracranial hemorrhage), 3,741 (34%) received MRI and 7,308 (66%) CT. Patients undergoing MRI had lower National Institutes of Health Stroke Scale (median [interquartile range] 2 [0–6] vs 4 [1–11]), and presented later after symptom onset (150 vs 123 min, p < 0.001). Admission MRI was associated with: lower adjusted odds of IVT (aOR 0.83, 0.73–0.96), but not with MT (aOR 1.11, 0.93–1.34); longer adjusted DTN (+22 min [13–30]), but not with longer DTP times; and higher adjusted odds of favorable outcome (aOR 1.54, 1.30–1.81). Interpretation We found an association of MRI with lower rates of IVT and a significant delay in DTN, but not in DTP and rates of MT. Given the delays in workflow metrics, prospective trials are required to show that tissue‐based benefits of baseline MRI compensate for the temporal benefits of CT. ANN NEUROL 2022;92:184–194
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Affiliation(s)
- Urs Fischer
- Department of Neurology, Inselspital, Bern University Hospital, and University of Bern, Switzerland.,Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Switzerland
| | | | | | - Emmanuel Carrera
- Department of Neurology, Neuroradiology, Radiology, HUG, Geneva, Switzerland
| | - Maria I Vargas
- Department of Neurology, Neuroradiology, Radiology, HUG, Geneva, Switzerland
| | - Alexandra Platon
- Department of Neurology, Neuroradiology, Radiology, HUG, Geneva, Switzerland
| | - Zsolt Kulcsar
- Department of Neurology, Neuroradiology, University Hospital Zurich, Switzerland & Cereneo Center for Neurology and Rehabilitation, Vitznau, Switzerland
| | - Susanne Wegener
- Department of Neurology, Neuroradiology, University Hospital Zurich, Switzerland & Cereneo Center for Neurology and Rehabilitation, Vitznau, Switzerland
| | - Andreas Luft
- Department of Neurology, Neuroradiology, University Hospital Zurich, Switzerland & Cereneo Center for Neurology and Rehabilitation, Vitznau, Switzerland
| | - David J Seiffge
- Department of Neurology, Inselspital, Bern University Hospital, and University of Bern, Switzerland
| | - Marcel Arnold
- Department of Neurology, Inselspital, Bern University Hospital, and University of Bern, Switzerland
| | - Patrik Michel
- Stroke Center, Neurology Service, Lausanne University Hospital, Lausanne, Switzerland
| | - Davide Strambo
- Stroke Center, Neurology Service, Lausanne University Hospital, Lausanne, Switzerland
| | - Vincent Dunet
- Stroke Center, Neurology Service, Lausanne University Hospital, Lausanne, Switzerland
| | | | - Ludwig Schelosky
- Department of Neurology, Institute for Radiology, Cantonal Hospital Muensterlingen, Switzerland
| | - Gustav Andreisek
- Department of Neurology, Institute for Radiology, Cantonal Hospital Muensterlingen, Switzerland
| | - Filip Barinka
- Stroke Center, Hirslanden Hospital Zurich, Switzerland
| | - Nils Peters
- Stroke Center, Hirslanden Hospital Zurich, Switzerland
| | | | | | - Carlo W Cereda
- Stroke Center, Neurocenter of Southern Switzerland, EOC, Lugano, Switzerland
| | - Georg Kägi
- Department of Neurology, Kantonsspital St. Gallen, Switzerland
| | | | - Stephan Salmen
- Department of Neurology, Spitalzentrum Biel, Switzerland
| | | | - Friedrich Medlin
- Stroke and Neurology Unit, Cantonal Hospital Fribourg, Switzerland
| | | | | | | | | | | | | | - Marios Psychogios
- Department of Neuroradiology, Clinic for Radiology & Nuclear Medicine, University Hospital Basel, Basel, Switzerland
| | - Pasquale Mordasini
- Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, and University of Bern, Switzerland
| | - Jan Gralla
- Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, and University of Bern, Switzerland
| | - Johannes Kaesmacher
- Institute of Diagnostic and Interventional Neuroradiology, Institute of Diagnostic, Interventional and Pediatric Radiology and Department of Neurology, Inselspital, Bern University Hospital, and University of Bern, Switzerland
| | - Thomas R Meinel
- Department of Neurology, Inselspital, Bern University Hospital, and University of Bern, Switzerland
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13
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New remote cerebral microbleeds in acute ischemic stroke: an analysis of the randomized, placebo-controlled WAKE-UP trial. J Neurol 2022; 269:5660-5667. [PMID: 35585334 PMCID: PMC9468109 DOI: 10.1007/s00415-022-11175-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/02/2022] [Accepted: 05/02/2022] [Indexed: 11/23/2022]
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14
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Braemswig TB, Schlemm L, Thomalla G, Endres M, Nolte CH. Author Response: Cerebral Microbleeds and Treatment Effect of Intravenous Thrombolysis in Acute Stroke: An Analysis of the WAKE-UP Randomized Clinical Trial. Neurology 2022; 98:817. [PMID: 35534239 DOI: 10.1212/wnl.0000000000200612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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15
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Meinel TR, Seiffge DJ. Reader Response: Cerebral Microbleeds and Treatment Effect of Intravenous Thrombolysis in Acute Stroke: An Analysis of the WAKE-UP Randomized Clinical Trial. Neurology 2022; 98:816-817. [PMID: 35534240 DOI: 10.1212/wnl.0000000000200611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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16
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Mu S, Lin Y, Xu Y, Wei X, Zeng Z, Lin K, Zhu L, Liu Q, Qi X, Wei L, Liang S, Wang S. A novel rat model for cerebral venous sinus thrombosis: verification of similarity to human disease via clinical analysis and experimental validation. J Transl Med 2022; 20:174. [PMID: 35410343 PMCID: PMC8996223 DOI: 10.1186/s12967-022-03374-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 04/01/2022] [Indexed: 11/10/2022] Open
Abstract
Background Cerebral venous sinus thrombosis (CVST) is a rare neurovascular disorder with highly variable manifestations and clinical courses. Animal models properly matched to the clinical form of CVST are necessary for elucidating the pathophysiology of the disease. In this study, we aimed to establish a rat model that accurately recapitulates the clinical features of CVST in human patients. Methods This study consisted of a clinical analysis and animal experiments. Clinical data for two centres obtained between January 2016 and May 2021 were collected and analysed retrospectively. In addition, a Sprague–Dawley rat model of CVST was established by inserting a water-swellable rubber device into the superior sagittal sinus, following which imaging, histological, haematological, and behavioural tests were used to investigate pathophysiological changes. Principal component analysis and hierarchical clustering heatmaps were used to evaluate the similarity between the animal models and human patients. Results The imaging results revealed the possibility of vasogenic oedema in animal models. Haematological analysis indicated an inflammatory and hypercoagulable state. These findings were mostly matched with the retrospective clinical data. Pathological and serological tests further revealed brain parenchymal damage related to CVST in animal models. Conclusions We successfully established a stable and reproducible rat model of CVST. The high similarity between clinical patients and animal models was verified via cluster analysis. This model may be useful for the study of CVST pathophysiology and potential therapies. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-022-03374-y.
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17
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Mu S, Li J, Lin K, Fang Y, Lin F, Li Z, Xu Y, Wang S. Predictive Factors for Early-Onset Seizures in Patients With Cerebral Venous Sinus Thrombosis. Front Neurol 2022; 13:842807. [PMID: 35422753 PMCID: PMC9001912 DOI: 10.3389/fneur.2022.842807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 03/11/2022] [Indexed: 11/13/2022] Open
Abstract
Seizures are reported to be important factors contributing to poor prognosis in patients with cerebral venous sinus thrombosis (CVST). However, the predictive factors for concurrent early onset seizures in patients with CVST remain unclear. To identify the predictive factors of early seizures in patients with CVST, this study retrospectively evaluated the clinical data of patients diagnosed with CVST at two centers from January 2011 to December 2020 and analyzed the relationship between admission characteristics and early onset seizures. A total of 112 CVST patients (63 men and 49 women; mean age 39.82 ± 15.70 years) were enrolled in this study, of whom 34 (30.36%) had seizures. For patients with seizures, cerebral hemorrhage, cortical vein thrombosis, anterior superior sagittal sinus (SSS) thrombosis, middle SSS thrombosis, CVST score, modified Rankin Scale, National Institute of Health Stroke Scale (NIHSS) score, neutrophil percentage, and D-dimer level were more severe than those without seizures. Logistic regression analysis showed that cerebral hemorrhage (P = 0.002), anterior SSS thrombosis (P = 0.003), NIHSS score ≥5 (P = 0.003), and D-dimer ≥0.88 mg/L (P = 0.004) were all significant predictive factors of early-onset seizures in CVST patients. Combining the four factors further improved the predictive capability with an area under the curve of 0.871 (95% confidence interval = 0.803–0.939). Further large-scale prospective studies are required to confirm these findings.
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Affiliation(s)
- Shuwen Mu
- Department of Neurosurgery, Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Jun Li
- Department of Neurosurgery, 900th Hospital, Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Kunzhe Lin
- Department of Neurosurgery, Affiliated Fuzhou First Hospital of Fujian Medical University, Fuzhou, China
| | - Yi Fang
- Department of Neurosurgery, Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Feng Lin
- School of Medicine, Xiamen University, Xiamen, China
| | - Ziqi Li
- School of Medicine, Xiamen University, Xiamen, China
| | - Yongjun Xu
- Laboratory of Basic Medicine, 900th Hospital, Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, China
- Yongjun Xu
| | - Shousen Wang
- Department of Neurosurgery, Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, China
- Department of Neurosurgery, 900th Hospital, Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, China
- *Correspondence: Shousen Wang
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18
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Lee SJ, Hwang YH, Hong JM, Choi JW, Park JH, Park B, Kang DH, Kim YW, Kim YS, Hong JH, Yoo J, Kim CH, Sohn SI, Lee JS. Influence of cerebral microbleeds on mechanical thrombectomy outcomes. Sci Rep 2022; 12:3637. [PMID: 35256626 PMCID: PMC8901625 DOI: 10.1038/s41598-022-07432-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 02/17/2022] [Indexed: 11/24/2022] Open
Abstract
In ischemic stroke patients undergoing endovascular treatment (EVT), we aimed to test the hypothesis that cerebral microbleeds (CMBs) are associated with clinical outcomes, while estimating the mediating effects of hemorrhagic transformation (HT), small-vessel disease burden (white matter hyperintensities, WMH), and procedural success. From a multicenter EVT registry, patients who underwent pretreatment MR imaging were analyzed. They were trichotomized according to presence of CMBs (none vs. 1–4 vs. ≥ 5). The association between CMB burden and 3-month mRS was evaluated using multivariable ordinal logistic regression, and mediation analyses were conducted to estimate percent mediation. Of 577 patients, CMBs were present in 91 (15.8%); 67 (11.6%) had 1–4 CMBs, and 24 (4.2%) had ≥ 5. Increases in CMBs were associated with hemorrhagic complications (β = 0.27 [0.06–0.047], p = 0.010) in multivariable analysis. The CMB effect on outcome was partially mediated by post-procedural HT degree (percent mediation, 14% [0–42]), WMH (23% [7–57]) and lower rates of successful reperfusion (6% [0–25]). In conclusion, the influence of CMBs on clinical outcomes is mediated by small-vessel disease burden, post-procedural HT, and lower reperfusion rates, listed in order of percent mediation size.
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