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  • 1
    In: The Lancet Neurology, Elsevier BV, Vol. 15, No. 12 ( 2016-11), p. 1228-1237
    Type of Medium: Online Resource
    ISSN: 1474-4422
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2016
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  • 2
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 52, No. 12 ( 2021-12), p. 3829-3838
    Abstract: Brain cavernous angiomas with symptomatic hemorrhage (CASH) have a high risk of neurological disability from recurrent bleeding. Systematic assessment of baseline features and multisite validation of novel magnetic resonance imaging biomarkers are needed to optimize clinical trial design aimed at novel pharmacotherapies in CASH. Methods: This prospective, multicenter, observational cohort study included adults with unresected, adjudicated brain CASH within the prior year. Six US sites screened and enrolled patients starting August 2018. Baseline demographics, clinical and imaging features, functional status (modified Rankin Scale and National Institutes of Health Stroke Scale), and patient quality of life outcomes (Patient-Reported Outcomes Measurement Information System-29 and EuroQol-5D) were summarized using descriptive statistics. Patient-Reported Outcomes Measurement Information System-29 scores were standardized against a reference population (mean 50, SD 10), and one-sample t test was performed for each domain. A subgroup underwent harmonized magnetic resonance imaging assessment of lesional iron content with quantitative susceptibility mapping and vascular permeability with dynamic contrast-enhanced quantitative perfusion. Results: As of May 2020, 849 patients were screened and 110 CASH cases enrolled (13% prevalence of trial eligible cases). The average age at consent was 46±16 years, 53% were female, 41% were familial, and 43% were brainstem lesions. At enrollment, ≥90% of the cohort had independent functional outcome (modified Rankin Scale score ≤2 and National Institutes of Health Stroke Scale score 〈 5). However, perceived health problems affecting quality of life were reported in 〉 30% of patients (EuroQol-5D). Patients had significantly worse Patient-Reported Outcomes Measurement Information System-29 scores for anxiety ( P =0.007), but better depression ( P =0.002) and social satisfaction scores ( P =0.012) compared with the general reference population. Mean baseline quantitative susceptibility mapping and permeability of CASH lesion were 0.45±0.17 ppm and 0.39±0.31 mL/100 g per minute, respectively, which were similar to historical CASH cases and consistent across sites. Conclusions: These baseline features will aid investigators in patient stratification and determining the most appropriate outcome measures for clinical trials of emerging pharmacotherapies in CASH.
    Type of Medium: Online Resource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2021
    detail.hit.zdb_id: 1467823-8
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  • 3
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 50, No. 7 ( 2019-07), p. 1688-1695
    Abstract: We investigated the prognostic significance of spontaneous intracerebral hemorrhage location in presence of severe intraventricular hemorrhage. Methods— We analyzed diagnostic computed tomography scans from 467/500 (excluding primary intraventricular hemorrhage) subjects from the CLEAR (Clot Lysis: Evaluating Accelerated Resolution of Intraventricular Hemorrhage) III trial. We measured intracerebral hemorrhage engagement with specific anatomic regions, and estimated association of each region with blinded assessment of dichotomized poor stroke outcomes: mortality, modified Rankin Scale score of 4 to 6, National Institutes of Health Stroke Scale score of 〉 4, stroke impact scale score of 〈 60, Barthel Index 〈 86, and EuroQol visual analogue scale score of 〈 50 and 〈 70 at days 30 and 180, respectively, using logistic regression models. Results— Frequency of anatomic region involvement consisted of thalamus (332 lesions, 71.1% of subjects), caudate (219, 46.9%), posterior limb internal capsule (188, 40.3%), globus pallidus/putamen (127, 27.2%), anterior limb internal capsule (108, 23.1%), and lobar (29, 6.2%). Thalamic location was independently associated with mortality (days 30 and 180) and with poor outcomes on most stroke scales at day 180 on adjusted analysis. Posterior limb internal capsule and globus pallidus/putamen involvement was associated with increased odds of worse disability at days 30 and 180. Anterior limb internal capsule and caudate locations were associated with decreased mortality on days 30 and 180. Anterior limb internal capsule lesions were associated with decreased long-term morbidity. Conclusions— Acute intracerebral hemorrhage lesion topography provides important insights into anatomic correlates of mortality and functional outcomes even in severe intraventricular hemorrhage causing obstructive hydrocephalus. Models accounting for intracerebral hemorrhage location in addition to volumes may improve outcome prediction and permit stratification of benefit from aggressive acute interventions. Clinical Trial Registration— URL: https://www.clinicaltrials.gov . Unique identifier: NCT00784134.
    Type of Medium: Online Resource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2019
    detail.hit.zdb_id: 1467823-8
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  • 4
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 42, No. 11 ( 2011-11), p. 3009-3016
    Abstract: Patients with intracerebral hemorrhage and intraventricular hemorrhage have a reported mortality of 50% to 80%. We evaluated a clot lytic treatment strategy for these patients in terms of mortality, ventricular infection, and bleeding safety events, and for its effect on the rate of intraventricular clot lysis. Methods— Forty-eight patients were enrolled at 14 centers and randomized to treatment with 3 mg recombinant tissue-type plasminogen activator (rtPA) or placebo. Demographic characteristics, severity factors, safety outcomes (mortality, infection, bleeding), and clot resolution rates were compared in the 2 groups. Results— Severity factors, including admission Glasgow Coma Scale, intracerebral hemorrhage volume, intraventricular hemorrhage volume, and blood pressure were evenly distributed, as were adverse events, except for an increased frequency of respiratory system events in the placebo-treated group. Neither intracranial pressure nor cerebral perfusion pressure differed substantially between treatment groups on presentation, with external ventricular device closure, or during the active treatment phase. Frequency of death and ventriculitis was substantially lower than expected and bleeding events remained below the prespecified threshold for mortality (18% rtPA; 23% placebo), ventriculitis (8% rtPA; 9% placebo), symptomatic bleeding (23% rtPA; 5% placebo, which approached statistical significance; P =0.1). The median duration of dosing was 7.5 days for rtPA and 12 days for placebo. There was a significant beneficial effect of rtPA on rate of clot resolution. Conclusions— Low-dose rtPA for the treatment of intracerebral hemorrhage with intraventricular hemorrhage has an acceptable safety profile compared to placebo and historical controls. Data from a well-designed phase III clinical trial, such as CLEAR III, will be needed to fully evaluate this treatment. Clinical Trial Registration— Participant enrollment began before July 1, 2005.
    Type of Medium: Online Resource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2011
    detail.hit.zdb_id: 1467823-8
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  • 5
    In: Cerebrovascular Diseases, S. Karger AG, Vol. 11, No. 4 ( 2001), p. 317-323
    Abstract: 〈 i 〉 Objective: 〈 /i 〉 The impact of early transcranial Doppler ultrasonography (TCD) upon stroke subtype diagnosis is unknown and may affect therapeutic strategies. In this study, the diagnostic usefulness of TCD in stroke subtype diagnosis according to the criteria of the Trial of ORG 10172 in Acute Stroke Treatment (TOAST) study was investigated in patients with acute cerebral ischemia. 〈 i 〉 Methods: 〈 /i 〉 TCD examination within 24 h of symptom onset was performed in 50 consecutive patients with acute cerebral ischemia. Of these 54% were female. Sixty percent of patients were black, 36% white, and 4% Asian. Initial TOAST stroke subtype diagnosis (ITSSD) was based upon clinical presentation and initial brain imaging studies. Modified TOAST stroke subtype diagnosis was determined subsequently after additional review of the TCD examination. Final TOAST stroke subtype diagnosis was determined at hospital discharge, incorporating all diagnostic studies. Using final TOAST stroke subtype diagnosis as the ‘gold standard’ ITSSD and modified TOAST stroke subtype diagnosis were compared in order to determine additional benefit from the information obtained by TCD. Data were collected retrospectively by a single investigator. 〈 i 〉 Results: 〈 /i 〉 ITSSD classified 23 of 50 (46%) patients correctly. After TCD, 30 of 50 (60%) patients were classified correctly, for an absolute benefit of 14% and a relative benefit of 30% (p = 0.018). Most benefit from TCD was observed in the TOAST stroke subtype category large-artery atherosclerosis, in particular in patients with intracranial vascular disease. In this category, ITSSD had a sensitivity of 27% which increased to 64% after TCD (p = 0.002). 〈 i 〉 Conclusion: 〈 /i 〉 TCD within 24 h of symptom onset improves the accuracy of early stroke subtype diagnosis in patients with acute cerebral ischemia due to large-artery atherosclerosis. This may have clinical implications for early therapeutic interventions.
    Type of Medium: Online Resource
    ISSN: 1015-9770 , 1421-9786
    Language: English
    Publisher: S. Karger AG
    Publication Date: 2001
    detail.hit.zdb_id: 1482069-9
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  • 6
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 49, No. Suppl_1 ( 2018-01-22)
    Abstract: Introduction: Thalamic hemorrhages account for 10-15% of intracerebral hemorrhages (ICH) and have a variety of clinical manifestations. We investigated the relationship between injury to thalamus and intra-thalamic regions with level of consciousness and functional outcomes among CLEAR-III trial participants. Methods: We analyzed diagnostic CT scans of 500 patients from CLEAR-III trial prior to randomization and identified the anatomic localization of ICH. Thalamic hemorrhages were further divided into 5 groups: dorsal, anterior, medial, central, and posterolateral. Blinded level of consciousness measures (Glasgow Coma Score (GCS) and question 1a of the National Institutes of Health Stroke Scale (NIHSS)) and stroke severity indices (including mortality and modified Rankin Scale (mRS)) were analyzed. We assessed association of each region with level of consciousness and stroke severity measures using multivariate logistic regression models. Major disability was defined as mRS 4-5. Outcome models were adjusted for ICH volume, IVH (intraventricular hemorrhage) volume, and age. Results: Thalamic ICH was present in 332 patients (71%, 33 with primary IVH were excluded). Initial median GCS was similar in patients with (10, IQR 7-14) and without (10, IQR 6-14) thalamic lesion (P=0.72). At day 30 and 180, thalamic ICH was associated with increased mortality (OR 2.48, CI 0.92-6.63 and OR 2.03, CI 1.02-4.06), major disability (OR 2.44, CI 0.87-6.81 and OR 2.50, CI 1.08-5.75), and death or major disability (OR 2.57, CI 0.91-7.19 and OR 2.71, CI 1.37-5.38), respectively. Thalamic ICH involved medial, central, posterolateral, dorsal, and anterior regions in 51.8%, 48.8%, 48.6%, 56.8%, and 47% of cases, respectively. On day 7, only involvement of the medial thalamus was associated with decreased consciousness defined as GCS 〈 =8 and NIHSS question 1a 〉 =2 (P=0.024 and 0.043, respectively). While all thalamic regions were associated with worse mRS, none were associated with decreased consciousness at day 180. Conclusion: Thalamic hemorrhages are associated with poor functional outcomes. Medial thalamus involvement affects consciousness acutely but not in the long term. The mechanism by which medial thalamus alters consciousness merits investigation.
    Type of Medium: Online Resource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2018
    detail.hit.zdb_id: 1467823-8
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  • 7
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 49, No. Suppl_1 ( 2018-01-22)
    Abstract: Objective: Prediction of long-term functional outcome in spontaneous intracerebral and intraventricular hemorrhage (ICH/IVH) is typically based on a limited number of severity factors known on admission. We investigated whether factors known at day 30 including medical comorbidities and in-hospital events in poor outcome survivors could accurately predict good vs. poor functional outcome at day 365. Methods: We explored the relationship between ICH severity factors, medical comorbidities, prospectively collected and adjudicated events during first 30 days post ictus, and outcomes using data from the Clot Lysis: Evaluating Accelerated Resolution of Hemorrhage with Alteplase (CLEAR III) trial. We defined outcome using blinded assessment of mortality and modified Rankin scale (mRS) at 30 and 365 days ( 〉 3 signifying poor outcome). Multivariable logistic regression was used to predict mRS at day 365 from poor outcome survivors at day 30. Results: Of 500 patients included in CLEAR III with ICH and severe IVH requiring external ventricular drainage, 345 (69%) had mRS 4 or 5 on day 30. The best performing model for distinguishing between patients with and without good outcome at 365 days included: age (Odds Ratio [OR], 0.93; 95% Confidence Interval [CI] , 0.90- 0.96), COPD (OR, 0.17; CI, 0.04-0.80), diabetes (OR, 0.50; CI, 0.25-0.98), hyperlipidemia (OR, 2.07; CI, 1.01-4.27), bacterial ventriculitis (OR, 0.34; CI, 0.13-0.91), cerebral perfusion pressure 〈 50 mmHg during first week (OR, 0.08; CI, 0.01-0.50), absent IVH on day 30 CT scan (OR, 3.08; CI, 1.69-5.62), enrollment (e) eICH volume (OR, 0.91; CI, 0.87-0.95), eIVH volume (OR, 0.97; CI, 0.95-0.99), thalamic ICH location (OR, 0.29; CI, 0.14-0.60), and eGlasgow Coma Scale (OR, 1.15; CI, 0.1.06-1.26). Cross-validated area under ROC curve (95%CI) was 0.81 (0.77-0.86) vs. 0.78 (0.73-0.82) for standard ICH prediction model with only enrollment predictors. Conclusions: Among patients with spontaneous ICH and IVH requiring external ventricular drainage, 30-day prediction models for long-term functional outcomes have substantial predictive capability. Addition of medical comorbidities and in-hospital events to models using well-known ICH severity factors is of some value.
    Type of Medium: Online Resource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2018
    detail.hit.zdb_id: 1467823-8
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  • 8
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 47, No. suppl_1 ( 2016-02)
    Abstract: Background: Elevated intracranial pressure (ICP) and inadequate cerebral perfusion pressure (CPP) are mechanisms causing poor outcomes in spontaneous intraventricular hemorrhage (IVH). We characterized intracranial hypertension in severe IVH requiring extraventricular drainage (EVD). Methods: Prospective analysis of ICP in all 500 patients enrolled in the CLEAR III trial, a multicenter, double-blind, randomized study comparing EVD + intraventricular recombinant tissue plasminogen activator (rtPA) vs. EVD + placebo for treatment of obstructive IVH and intracerebral hemorrhage (ICH) volume 〈 30cc. Maximum and minimum ICP/CPP were recorded every 4 hours until 7 days post randomization (rand), analyzed at pre-defined thresholds and compared by clinical and radiological variables. Results: of 23,406 ICP readings, maximum ICP ranged from 0-97 mmHg (median, IQR; 11,8); 90.7% (21,223) were ≤20mmHg, 1.8% 〉 30, 0.5% 〉 40, and 0.2% 〉 50mm Hg. Proportion of threshold events 〉 20mmHg were more frequent with persistent closure of the lower ventricular system after day 3 (p=0.02), and was correlated with initial and end of treatment (72 hours post rand) ICH volumes (p=0.01, p=0.04, respectively). ICP elevation 〉 20mmHg occurred during a required 1 hr EVD closure interval after 566/3712 (15.3%) study agent injections. Early re-opening of the EVD occurred in 3.9%. Shunting for hydrocephalus occurred in 18.6% over 1 year follow-up and was associated with % of high ICP events 〉 20 and 30 mmHg (p=0.01 for both). After adjustment for ICH severity factors and IVH volume, % of ICP readings 〉 20 mmHg was significantly associated with 30 and 180 day mortality (p=0.01; p=0.03 respectively), and borderline with modified Rankin Scale (mRS4-6) (p=0.09; p=0.11 respectively). Proportion of CPP readings 〈 70mmHg was associated with day 30 poor mRS (p=0.02), with a weaker association for day 180 mRS (p=0.07). Conclusions: Elevated ICP and inadequate CPP are not infrequent during monitoring and EVD drainage in severe IVH and predict higher short and long-term mortality. Early opening of the lower ventricular system may reduce high ICP events. These results permit future correlation of ICP and CPP with treatment rendered (thrombolysis vs placebo), with upcoming unblinding of the trial.
    Type of Medium: Online Resource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2016
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  • 9
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 48, No. suppl_1 ( 2017-02)
    Abstract: Introduction: As large clinical trials for spontaneous intracerebral hemorrhage (ICH) increasingly influence management, recruitment of diverse populations must be ensured to fully understand the disease process and benefit of interventions to the general public. There is little data on sex, race and outcomes in ICH trials. We hypothesize that women and geographic minorities are underrepresented in ICH clinical trials and that there exist population specific differences in mortality, functional outcomes and response to interventions. Methods: Pooled analysis of 5456 subjects from the following clinical trials: VISTA (985), INTERACT I (404) and II (2829), STICH II (597), MISTIE II (141) and CLEAR III (500). Patients were grouped by sex, race, and geographic location. Modified Rankin Scale [mRS] was obtained at 30 days and 3 months. Results: More men than women participated in ICH trials (61.9% vs. 38.1%); women were older and more likely to have hypertension; men had more coronary artery disease. Women presented with lower Glasgow Coma scale, higher ICH score and more intraventricular hemorrhage. Day 90 mortality was 13.9% in women and 16.6 % in men (p=0.01); 90 day poor outcome (mRS 3-5) was 57.2% in women and 51.0% in men (p 〈 0.001). Only mortality was significantly different between sexes after adjustment for ICH score. Race representation varied in these clinical trials: 1.5% Hispanic; 6.6% black; 14% Arabic; 31% white and 43.4% Asian. Day 90 mortality and mRS 3-5 were highest in Hispanics (22.1%, 78.3%, respectively) and lowest in Asians (9.5%, 43.8%). Hispanics had higher ICH score, but blacks and Hispanics had lower day 90 mortality compared to whites in adjusted models. Asians had both lower mortality and less day 90 mRS 3-5 vs. whites while Arabics and blacks were more likely to have day 90 mRS 3-5. Study interventions were well balanced by sex and race. Conclusions: Sex and race representation in ICH clinical trials only partially equate to current understanding of epidemiology of ICH. There is a lack of trial evidence from Africa and South America and under-representation of women, Hispanics and blacks. Despite higher ICH severity, Hispanics had lower adjusted mortality risk while males had higher risk and Arabics and blacks had worse adjusted poor outcomes.
    Type of Medium: Online Resource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2017
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  • 10
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 51, No. Suppl_1 ( 2020-02)
    Abstract: Introduction: The Minimally Invasive Surgery Plus Recombinant Tissue Plasminogen Activator for Intracerebral Hemorrhage Evacuation Phase III trial (MISTIE III) concluded that the extent of hematoma reduction confers a mortality and functional benefit. It is unclear if a minimum extent of evacuation is needed for mortality and functional outcome benefit in lobar cases with MISTIE and with open surgical interventions. Objective: We analyzed the effect of extent of lobar ICH evacuation on clinical outcome at 180 days after undergoing the MISTIE procedure and open craniotomy, in the context of the MISTIE III and STICH II clinical trials, respectively. Methods: Patients randomized to the surgical arm with lobar ICH, who underwent the procedure in the MISTIE III trial (n=84) and the STICH II trial (n=266) were analyzed, excluding cases crossing over to surgery. We assessed end of treatment ICH volume on post procedure CT scans and % hematoma evacuation, in relation to survival and likelihood of mRS 0-3. Cubic spline modeling with dichotomized outcome was used to compare the extent of hematoma evacuation on clinical outcome. Results: End of treatment volume of 〈 28 mL in lobar ICH MISTIE III patients and 〈 30 mL in STICH II trial patients showed a significantly increased probability of achieving an mRS of 0-3 at 180 days (p 〈 0.03, p 〈 0.006, respectively). This threshold was achieved in 83.1% of lobar cases undergoing MISTIE and in 92.1% of surgical cases in STICH II. Achieving survival benefit at 180 days trended towards improved probability with further hematoma volume reduction without a threshold value in MISTIE III, and was significant per mL reduction in STICH II (p 〈 0.001). Analysis by percent of hematoma evacuation trended toward better probabilities of survival and improved functional outcome but were not significant. Conclusion: This analysis confirms that extent of hematoma evacuation is important in attaining the benefits of both minimally invasive and open surgical interventions in non-herniating lobar ICH patients randomized in clinical trials. Extent of ICH evacuation must be considered in the analysis of comparative effectiveness of various techniques and in the design of future trials.
    Type of Medium: Online Resource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2020
    detail.hit.zdb_id: 1467823-8
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