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  • 1
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    Online Resource
    Global Impact of the COVID-19 Pandemic on Stroke Volumes and Cerebrovascular Events : A 1-Year Follow-up
    Ovid Technologies (Wolters Kluwer Health) ; 2023
    In:  Neurology Vol. 100, No. 4 ( 2023-01-24), p. e408-e421
    Details
    In: Neurology, Ovid Technologies (Wolters Kluwer Health), Vol. 100, No. 4 ( 2023-01-24), p. e408-e421
    Abstract: Declines in stroke admission, IV thrombolysis (IVT), and mechanical thrombectomy volumes were reported during the first wave of the COVID-19 pandemic. There is a paucity of data on the longer-term effect of the pandemic on stroke volumes over the course of a year and through the second wave of the pandemic. We sought to measure the effect of the COVID-19 pandemic on the volumes of stroke admissions, intracranial hemorrhage (ICH), IVT, and mechanical thrombectomy over a 1-year period at the onset of the pandemic (March 1, 2020, to February 28, 2021) compared with the immediately preceding year (March 1, 2019, to February 29, 2020). Methods We conducted a longitudinal retrospective study across 6 continents, 56 countries, and 275 stroke centers. We collected volume data for COVID-19 admissions and 4 stroke metrics: ischemic stroke admissions, ICH admissions, IVT treatments, and mechanical thrombectomy procedures. Diagnoses were identified by their ICD-10 codes or classifications in stroke databases. Results There were 148,895 stroke admissions in the 1 year immediately before compared with 138,453 admissions during the 1-year pandemic, representing a 7% decline (95% CI [95% CI 7.1–6.9]; p 〈 0.0001). ICH volumes declined from 29,585 to 28,156 (4.8% [5.1–4.6]; p 〈 0.0001) and IVT volume from 24,584 to 23,077 (6.1% [6.4–5.8]; p 〈 0.0001). Larger declines were observed at high-volume compared with low-volume centers (all p 〈 0.0001). There was no significant change in mechanical thrombectomy volumes (0.7% [0.6–0.9]; p = 0.49). Stroke was diagnosed in 1.3% [1.31–1.38] of 406,792 COVID-19 hospitalizations. SARS-CoV-2 infection was present in 2.9% ([2.82–2.97] , 5,656/195,539) of all stroke hospitalizations. Discussion There was a global decline and shift to lower-volume centers of stroke admission volumes, ICH volumes, and IVT volumes during the 1st year of the COVID-19 pandemic compared with the prior year. Mechanical thrombectomy volumes were preserved. These results suggest preservation in the stroke care of higher severity of disease through the first pandemic year. Trial Registration Information This study is registered under NCT04934020 .
    Type of Medium: Online Resource
    ISSN: 0028-3878 , 1526-632X
    URL: Article
    DOI: 10.1212/WNL.0000000000201426
    RVK:
    XA 10000
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2023
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  • 2
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    Abstract 2781: Prevalence and Characterization of Cerebral Microbleeds in Lacunar Stroke Patients: Observations from the Secondary Prevention Small Subcortical Strokes (SPS3) Trial
    Ovid Technologies (Wolters Kluwer Health) ; 2012
    In:  Stroke Vol. 43, No. suppl_1 ( 2012-02)
    Details
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 43, No. suppl_1 ( 2012-02)
    Abstract: Background: The prevalence of cerebral microbleeds (CMBs) has been reported to be high in patients with cerebrovascular disease and particularly in those with cerebral small vessel disease; i.e. lacunar strokes. However, methodological limitations of previous studies imposed by small sample sizes and the absence of a clear classification of stroke subtypes hampers the conclusions regarding prevalence and characterization of CMBs in lacunar stroke patients. Methods: SPS3 is a multi-center international randomized trial including a well-defined cohort of MRI proven lacunar stroke patients. We investigated patients within this population who had an axial T2*- GRE sequence available as part of their baseline clinical MRI. The Brain Observer MicroBleed Scale was used to rate the presence and topography of CMBs. CMB severity was graded as either absent, 1-2 CMBs or 〉 2 CMBs. We compared baseline characteristics and vascular risk factors between patients with CMBs and those without and between the defined CMB severity grades. Results: Of the 651 MRIs analyzed, 237 (36%) had CMBs. Patients with CMBs were more often male (73% vs 62%, p 〈 0.01) and Hispanic (49% vs 39%, p=0.02), were more likely to have hypertension (95% vs 90%, p=0.01) and prior lacunar stroke (13% vs 7%, p=0.01), and had lower baseline mean Cognitive Abilities Screening Instrument (CASI) scores (80 vs 86, p 〈 0.01). Male gender [OR 1.85 (95% CI, 1.26 to 2.70)], prior lacunar stroke [OR 2.19 (95% CI, 1.19 to 4.03)] and lower baseline CASI scores [OR 0.97 (95% CI, 0.95 to 0.98)] remained significant following multivariate analysis. A significant association was found between increasing CMB severity and decreasing CASI scores (p 〈 0.01), an increased presence of multiple lacunar infarcts (p 〈 0.0001) and moderate-severe white matter hyperintensities on MRI (p 〈 0.0001). Conclusions: Preliminary results of this large and well-defined cohort of lacunar stroke suggest a high prevalence of CMBs. A significant association was observed between CMBs and gender and a history of lacunar stroke. CMB severity was associated with multiple infarcts and severity of white matter disease on MRI, as well as lower cognitive function. Ongoing data from SPS3 will likely elucidate whether prognosis and response to therapy differ in patients with CMBs.
    Type of Medium: Online Resource
    ISSN: 0039-2499 , 1524-4628
    URL: Article
    DOI: 10.1161/str.43.suppl_1.A2781
    RVK:
    XA 10000
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2012
    detail.hit.zdb_id: 1467823-8
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  • 3
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    Identifying the Right Mentor
    Ovid Technologies (Wolters Kluwer Health) ; 2017
    In:  Stroke Vol. 48, No. 9 ( 2017-09)
    Details
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 48, No. 9 ( 2017-09)
    Type of Medium: Online Resource
    ISSN: 0039-2499 , 1524-4628
    URL: Article
    DOI: 10.1161/STROKEAHA.117.018545
    RVK:
    XA 10000
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2017
    detail.hit.zdb_id: 1467823-8
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  • 4
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    Embolic Stroke of Undetermined Source : A Systematic Review and Clinical Update
    Ovid Technologies (Wolters Kluwer Health) ; 2017
    In:  Stroke Vol. 48, No. 4 ( 2017-04), p. 867-872
    Details
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 48, No. 4 ( 2017-04), p. 867-872
    Abstract: Embolic stroke of undetermined source (ESUS) designates patients with nonlacunar cryptogenic ischemic strokes in whom embolism is the likely stroke mechanism. It has been hypothesized that anticoagulation is more efficacious than antiplatelet therapy for secondary stroke prevention in ESUS patients. We review available information about ESUS. Methods— Systematic literature review to assess the frequency of ESUS, patient features, and prognosis using PubMed from 2014 to present, unrestricted by language. Results— On the basis of 9 studies, the reported frequency of ESUS ranged from 9% to 25% of ischemic strokes, averaging 17%. From 8 studies involving 2045 ESUS patients, the mean age was 65 years and 42% were women; the mean NIH stroke score was 5 at stroke onset (4 studies, 1772 ESUS patients). Most (86%) ESUS patients were treated with antiplatelet therapy during follow-up, with the annualized recurrent stroke rate averaging 4.5% per year during a mean follow-up of 2.7 years (5 studies, 1605 ESUS patients). Conclusions— ESUS comprises about 1 ischemic stroke in 6. Patients with ischemic stroke meeting criteria for ESUS were relatively young compared with other ischemic stroke subtypes and had, on average, minor strokes, consistent with small emboli. Retrospective methods of available studies limit confidence in stroke recurrence rates but support a substantial ( 〉 4% per year) rate of stroke recurrence during (mostly) antiplatelet therapy. There is an important need to define better antithrombotic prophylaxis for this frequently occurring subtype of ischemic stroke.
    Type of Medium: Online Resource
    ISSN: 0039-2499 , 1524-4628
    URL: Article
    DOI: 10.1161/STROKEAHA.116.016414
    RVK:
    XA 10000
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2017
    detail.hit.zdb_id: 1467823-8
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  • 5
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    Global Impact of COVID-19 on Stroke Care and IV Thrombolysis
    Ovid Technologies (Wolters Kluwer Health) ; 2021
    In:  Neurology Vol. 96, No. 23 ( 2021-06-08), p. e2824-e2838
    Details
    In: Neurology, Ovid Technologies (Wolters Kluwer Health), Vol. 96, No. 23 ( 2021-06-08), p. e2824-e2838
    Abstract: To measure the global impact of COVID-19 pandemic on volumes of IV thrombolysis (IVT), IVT transfers, and stroke hospitalizations over 4 months at the height of the pandemic (March 1 to June 30, 2020) compared with 2 control 4-month periods. Methods We conducted a cross-sectional, observational, retrospective study across 6 continents, 70 countries, and 457 stroke centers. Diagnoses were identified by their ICD-10 codes or classifications in stroke databases. Results There were 91,373 stroke admissions in the 4 months immediately before compared to 80,894 admissions during the pandemic months, representing an 11.5% (95% confidence interval [CI] −11.7 to −11.3, p 〈 0.0001) decline. There were 13,334 IVT therapies in the 4 months preceding compared to 11,570 procedures during the pandemic, representing a 13.2% (95% CI −13.8 to −12.7, p 〈 0.0001) drop. Interfacility IVT transfers decreased from 1,337 to 1,178, or an 11.9% decrease (95% CI −13.7 to −10.3, p = 0.001). Recovery of stroke hospitalization volume (9.5%, 95% CI 9.2–9.8, p 〈 0.0001) was noted over the 2 later (May, June) vs the 2 earlier (March, April) pandemic months. There was a 1.48% stroke rate across 119,967 COVID-19 hospitalizations. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection was noted in 3.3% (1,722/52,026) of all stroke admissions. Conclusions The COVID-19 pandemic was associated with a global decline in the volume of stroke hospitalizations, IVT, and interfacility IVT transfers. Primary stroke centers and centers with higher COVID-19 inpatient volumes experienced steeper declines. Recovery of stroke hospitalization was noted in the later pandemic months.
    Type of Medium: Online Resource
    ISSN: 0028-3878 , 1526-632X
    URL: Article
    DOI: 10.1212/WNL.0000000000011885
    RVK:
    XA 10000
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2021
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  • 6
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    Safety and Efficacy of Tenecteplase Compared With Alteplase in Patients With Large Vessel Occlusion Stroke : A Prespecified Secondary Analysis of the ACT Randomized Clinical Trial
    American Medical Association (AMA) ; 2023
    In:  JAMA Neurology Vol. 80, No. 8 ( 2023-08-01), p. 824-
    Details
    In: JAMA Neurology, American Medical Association (AMA), Vol. 80, No. 8 ( 2023-08-01), p. 824-
    Abstract: It is unknown whether intravenous thrombolysis using tenecteplase is noninferior or preferable compared with alteplase for patients with acute ischemic stroke. Objective To examine the safety and efficacy of tenecteplase compared to alteplase among patients with large vessel occlusion (LVO) stroke. Design, Setting, and Participants This was a prespecified analysis of the Intravenous Tenecteplase Compared With Alteplase for Acute Ischaemic Stroke in Canada (ACT) randomized clinical trial that enrolled patients from 22 primary and comprehensive stroke centers across Canada between December 10, 2019, and January 25, 2022. Patients 18 years and older with a disabling ischemic stroke within 4.5 hours of symptom onset were randomly assigned (1:1) to either intravenous tenecteplase or alteplase and were monitored for up to 120 days. Patients with baseline intracranial internal carotid artery (ICA), M1-middle cerebral artery (MCA), M2-MCA, and basilar occlusions were included in this analysis. A total of 1600 patients were enrolled, and 23 withdrew consent. Exposures Intravenous tenecteplase (0.25 mg/kg) vs intravenous alteplase (0.9 mg/kg). Main Outcomes and Measures The primary outcome was the proportion of modified Rankin scale (mRS) score 0-1 at 90 days. Secondary outcomes were an mRS score from 0 to 2, mortality, and symptomatic intracerebral hemorrhage. Angiographic outcomes were successful reperfusion (extended Thrombolysis in Cerebral Infarction scale score 2b-3) on first and final angiographic acquisitions. Multivariable analyses (adjusting for age, sex, National Institute of Health Stroke Scale score, onset-to-needle time, and occlusion location) were carried out. Results Among 1577 patients, 520 (33.0%) had LVO (median [IQR] age, 74 [64-83] years; 283 [54.4%] women): 135 (26.0%) with ICA occlusion, 237 (45.6%) with M1-MCA, 117 (22.5%) with M2-MCA, and 31 (6.0%) with basilar occlusions. The primary outcome (mRS score 0-1) was achieved in 86 participants (32.7%) in the tenecteplase group vs 76 (29.6%) in the alteplase group. Rates of mRS 0-2 (129 [49.0%] vs 131 [51.0%]), symptomatic intracerebral hemorrhage (16 [6.1%] vs 11 [4.3%]), and mortality (19.9% vs 18.1%) were similar in the tenecteplase and alteplase groups, respectively. No difference was noted in successful reperfusion rates in the first (19 [9.2%] vs 21 [10.5%]) and final angiogram (174 [84.5%] vs 177 [88.9%]) among 405 patients who underwent thrombectomy. Conclusions and Relevance The findings in this study indicate that intravenous tenecteplase conferred similar reperfusion, safety, and functional outcomes compared to alteplase among patients with LVO.
    Type of Medium: Online Resource
    ISSN: 2168-6149
    URL: Article
    DOI: 10.1001/jamaneurol.2023.2094
    Language: English
    Publisher: American Medical Association (AMA)
    Publication Date: 2023
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  • 7
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    Endovascular Thrombectomy in Patients With Very Low ASPECTS Scores: A Systematic Review and Meta-analysis
    Ovid Technologies (Wolters Kluwer Health) ; 2023
    In:  Neurology
    Details
    In: Neurology, Ovid Technologies (Wolters Kluwer Health)
    Abstract: Randomized controlled trials (RCTs) have recently established the benefit of endovascular thrombectomy (EVT) in patients with large infarct core on baseline neuroimaging. We evaluated the utility of EVT in patients with very large infarct core, defined as Alberta Stroke Program Early CT scores (ASPECTS) of less than 3. Methods: We performed a systematic review and meta-analysis of the subgroups of patients with baseline ASPECTS scores 0-2 included in RCTs evaluating the utility of EVT in the setting of a large infarct core. The outcome of interest was the probability of three-month functional improvement assessed with the generalized odds ratios (ORs) of the modified Rankin Scale (mRS) scores between patients receiving EVT or medical management. Results: In the pooled analyses of 82 participants out of the total 808 (10%) enrolled in two individual trials we found a statistically significant shift in the distribution of mRS scores towards better outcomes in favor of EVT (generalized OR=1.46, 95%CI: 1.03, 2.07). No evidence of heterogeneity was detected (I 2 =0%; p for Cochran Q: 0.73). Discussion: The results from our pooled analysis challenge the exclusion of patients presenting with ASPECTS scores less than 3 from receiving EVT if they are otherwise eligible.
    Type of Medium: Online Resource
    ISSN: 0028-3878 , 1526-632X
    URL: Article
    DOI: 10.1212/WNL.0000000000207869
    RVK:
    XA 10000
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2023
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  • 8
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    Stroke Outcomes in the COMPASS Trial
    Ovid Technologies (Wolters Kluwer Health) ; 2019
    In:  Circulation Vol. 139, No. 9 ( 2019-02-26), p. 1134-1145
    Details
    In: Circulation, Ovid Technologies (Wolters Kluwer Health), Vol. 139, No. 9 ( 2019-02-26), p. 1134-1145
    Abstract: Strokes were significantly reduced by the combination of rivaroxaban plus aspirin in comparison with aspirin in the COMPASS trial (Cardiovascular Outcomes for People Using Anticoagulation Strategies). We present detailed analyses of stroke by type, predictors, and antithrombotic effects in key subgroups. Methods: Participants had stable coronary artery or peripheral artery disease and were randomly assigned to receive aspirin 100 mg once daily (n=9126), rivaroxaban 5 mg twice daily (n=9117), or rivaroxaban 2.5 mg twice daily plus aspirin (n=9152). Patients who required anticoagulation or had a stroke within 1 month, previous lacunar stroke, or intracerebral hemorrhage were excluded. Results: During a mean follow-up of 23 months, fewer patients had strokes in the rivaroxaban plus aspirin group than in the aspirin group (83 [0.9% per year] versus 142 [1.6% per year] ; hazard ratio [HR], 0.58; 95% CI, 0.44–0.76; P 〈 0.0001). Ischemic/uncertain strokes were reduced by nearly half (68 [0.7% per year] versus 132 [1.4% per year] ; HR, 0.51; 95% CI, 0.38–0.68; P 〈 0.0001) by the combination in comparison with aspirin. No significant difference was noted in the occurrence of stroke in the rivaroxaban alone group in comparison with aspirin: annualized rate of 0.7% (HR, 0.82; 95% CI, 0.65–1.05). The occurrence of fatal and disabling stroke (modified Rankin Scale, 3–6) was decreased by the combination (32 [0.3% per year] versus 55 [0.6% per year] ; HR, 0.58; 95% CI, 0.37–0.89; P =0.01). Independent predictors of stroke were prior stroke, hypertension, systolic blood pressure at baseline, age, diabetes mellitus, and Asian ethnicity. Prior stroke was the strongest predictor of incident stroke (HR, 3.63; 95% CI, 2.65–4.97; P 〈 0.0001) and was associated with a 3.4% per year rate of stroke recurrence on aspirin. The effect of the combination in comparison with aspirin was consistent across subgroups with high stroke risk, including those with prior stroke. Conclusions: Low-dose rivaroxaban plus aspirin is an important new antithrombotic option for primary and secondary stroke prevention in patients with clinical atherosclerosis. Clinical Trial Registration: URL: https://www.clinicaltrials.gov . Unique identifier: NCT01776424.
    Type of Medium: Online Resource
    ISSN: 0009-7322 , 1524-4539
    URL: Article
    DOI: 10.1161/CIRCULATIONAHA.118.035864
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2019
    detail.hit.zdb_id: 1466401-X
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  • 9
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    In-Hospital Delays for Acute Stroke Treatment Delivery During the COVID-19 Pandemic
    Cambridge University Press (CUP) ; 2021
    In:  Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques Vol. 48, No. 1 ( 2021-01), p. 59-65
    Details
    In: Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques, Cambridge University Press (CUP), Vol. 48, No. 1 ( 2021-01), p. 59-65
    Abstract: Délais dans le traitement en milieu hospitalier des AVC aigus dans le contexte de la pandémie de COVID-19. Contexte : Nous nous sommes penchés, dans le contexte de la pandémie de COVID-19, sur l’impact de restrictions régionales imposées dans le domaine social et dans les soins de santé sur les délais de prise en charge de patients victimes d’un AVC aigu. À noter que ces patients ont été admis dans un centre régional de traitement des AVC situé dans le centre-ouest de l’Ontario (Canada). Méthodes : Nous avons comparé entre eux les délais de prise en charge de patients ayant bénéficié d’activateurs tissulaires du plasminogène par intraveineuse (tPA) et/ou d’une procédure de thrombectomie endovasculaire (TE) avant et après la mise sur pied de restrictions et l’imposition d’un état d’urgence sanitaire dans notre région (17 mars 2020). Résultats : Après la mise sur pied de ces restrictions, nous avons identifié, par rapport aux 12 mois précédent, une augmentation notable des délais médians entre l’arrivée à l’hôpital et un examen de tomodensitométrie dans le cas de patients bénéficiant de tPA (19 minutes, EI : 14–27 minutes contre 13 minutes, EI : 9–17 minutes ; p = 0,008) et/ou d’une procédure de TE (20 minutes, EI : 15–33 minutes contre 11 minutes, EI : 5–20 minutes ; p = 0,035). Pour ce qui est des patients bénéficiant de tPA, nous avons également observé une augmentation importante ( p = 0,005) des délais médians entre leur arrivée à l’hôpital et l’injection d’un traitement (61 minutes, EI : 46–72 minutes contre 37 minutes, EI : 30–50 minutes). Enfin, dans le premier mois et demi suivant la mise sur pied des restrictions régionales et institutionnelles attribuables à la pandémie de COVID-19, aucun délai supplémentaire entre l’apparition des premiers symptômes d’un AVC et l’arrivée à l’hôpital n’a été remarqué pour des patients bénéficiant de tPA et/ou d’une procédure de TE. Conclusion : En somme, nous avons détecté une augmentation de nos délais de traitement dans le cas de patients victimes d’un AVC aigu ayant bénéficié de tPA et/ou d’une procédure de TE. Cela peut être attribué à une augmentation des délais de présentation à l’hôpital mais aussi à des délais dans l’obtention d’images de tomodensitométrie pour des patients traités avec des tPA et une procédure de TE, sans compter des délais accrus pour bénéficier d’un traitement de tPA.
    Type of Medium: Online Resource
    ISSN: 0317-1671 , 2057-0155
    URL: Article
    DOI: 10.1017/cjn.2020.170
    RVK:
    XA 10000
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2021
    detail.hit.zdb_id: 2577275-2
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  • 10
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    Endovascular treatment for basilar artery occlusion: A systematic review and meta‐analysis
    Wiley ; 2021
    In:  European Journal of Neurology Vol. 28, No. 6 ( 2021-06), p. 2106-2110
    Details
    In: European Journal of Neurology, Wiley, Vol. 28, No. 6 ( 2021-06), p. 2106-2110
    Abstract: Independent randomized controlled clinical trials (RCTs) have provided robust evidence for endovascular treatment (EVT) as the standard of care treatment for acute large vessel occlusions in the anterior circulation. We examined available studies specific to posterior cerebral circulation ischemic strokes to see if any conclusions can be drawn regarding EVT options. Methods We performed a systematic literature search to identify studies evaluating the safety and efficacy of EVT versus standard medical treatment for patients with acute basilar artery occlusion (BAO). We extracted data for outcomes of interest and presented associations between the two groups with the use of risk ratios (RRs) or odds ratios (ORs), with corresponding 95% confidence intervals (CIs). We used a random‐effects model to pool the effect estimates. Results We identified five studies (two RCTs, three observational cohorts) including a total of 1098 patients. Patients receiving EVT had a higher risk of symptomatic intracranial hemorrhage (sICH) compared to those receiving non‐interventional medical management (RR 5.42, 95% CI 2.74–10.71). Nonsignificant trends towards modified Rankin Scale (mRS) scores 0–2 (RR 1.02, 95% CI 0.74–1.41), mRS scores 0–3 (RR = 0.97, 95% CI 0.64–1.47), overall functional improvement (OR 0.93, 95% CI 0.57–1.51), and all‐cause mortality (RR 1.03, 95% CI 0.78–1.35) at 3 months were seen. Conclusion Although EVT increases the probability of sICH, the available data do not exclude the possibility of improved functional outcomes over standard therapy. As larger studies are challenged by the perceived lack of equipoise in this vulnerable patient population, results of ongoing RCTs are expected to provide substantial input for future meta‐analyses.
    Type of Medium: Online Resource
    ISSN: 1351-5101 , 1468-1331
    URL: Issue
    URL: Article
    DOI: 10.1111/ene.v28.6
    DOI: 10.1111/ene.14751
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 2020241-6
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