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  • Ovid Technologies (Wolters Kluwer Health)  (59)
  • 1
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 53, No. 12 ( 2022-12), p. 3728-3740
    Abstract: We aim to compare the outcome of patients from urban areas, where the referral center is able to perform thrombectomy, with patients from nonurban areas enrolled in the RACECAT trial (Direct Transfer to an Endovascular Center Compared to Transfer to the Closest Stroke Center in Acute Stroke Patients With Suspected Large Vessel Occlusion). Methods: Patients with suspected large vessel occlusion stroke, as evaluated by a Rapid Arterial Occlusion Evaluation score of ≥5, from urban catchment areas of thrombectomy-capable centers during RACECAT trial enrollment period were included in the Stroke Code Registry of Catalonia. Primary outcome was disability at 90 days, as assessed by the shift analysis on the modified Rankin Scale score, in patients with an ischemic stroke. Secondary outcomes included mortality at 90 days, rate of thrombolysis and thrombectomy, time from onset to thrombolysis, and thrombectomy initiation. Propensity score matching was used to assemble a cohort of patients with similar characteristics. Results: The analysis included 1369 patients from nonurban areas and 2502 patients from urban areas. We matched 920 patients with an ischemic stroke from urban areas and nonurban areas based on their propensity scores. Patients with ischemic stroke from nonurban areas had higher degrees of disability at 90 days (median [interquartle range] modified Rankin Scale score, 3 [2–5] versus 3 [1–5], common odds ratio, 1.25 [95% CI, 1.06–1.48] ); the observed average effect was only significant in patients with large vessel stroke (common odds ratio, 1.36 [95% CI, 1.08–1.65]). Mortality rate was similar between groups(odds ratio, 1.02 [95% CI, 0.81–1.28] ). Patients from nonurban areas had higher odds of receiving thrombolysis (odds ratio, 1.36 [95% CI, 1.16–1.67]), lower odds of receiving thrombectomy(odds ratio, 0.61 [95% CI, 0.51–0.75] ), and longer time from stroke onset to thrombolysis (mean difference 38 minutes [95% CI, 25–52]) and thrombectomy(mean difference 66 minutes [95% CI, 37–95] ). Conclusions: In Catalonia, Spain, patients with large vessel occlusion stroke triaged in nonurban areas had worse neurological outcomes than patients from urban areas, where the referral center was able to perform thrombectomy. Interventions aimed at improving organizational practices and the development of thrombectomy capabilities in centers located in remote areas should be pursued. Registration: URL: https://www.clinicaltrials.gov ; Unique identifier: NCT02795962.
    Type of Medium: Online Resource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2022
    detail.hit.zdb_id: 1467823-8
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  • 2
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 54, No. 3 ( 2023-03), p. 770-780
    Abstract: We aim to assess whether time of day modified the treatment effect in the RACECAT trial (Direct Transfer to an Endovascular Center Compared to Transfer to the Closest Stroke Center in Acute Stroke Patients With Suspected Large Vessel Occlusion Trial), a cluster-randomized trial that did not demonstrate the benefit of direct transportation to a thrombectomy-capable center versus nearest local stroke center for patients with a suspected large vessel stroke triaged in nonurban Catalonia between March 2017 and June 2020. Methods: We performed a post hoc analysis of RACECAT to evaluate if the association between initial transport routing and functional outcome differed according to trial enrollment time: daytime (8:00 am –8:59 pm ) and nighttime (9:00 pm –7:59 am ). Primary outcome was disability at 90 days, as assessed by the shift analysis on the modified Rankin Scale score, in patients with ischemic stroke. Subgroup analyses according to stroke subtype were evaluated. Results: We included 949 patients with an ischemic stroke, of whom 258 patients(27%) were enrolled during nighttime. Among patients enrolled during nighttime, direct transport to a thrombectomy-capable center was associated with lower degrees of disability at 90 days (adjusted common odds ratio [acOR] , 1.620 [95% CI, 1.020–2.551]); no significant difference between trial groups was present during daytime (acOR, 0.890 [95% CI, 0.680–1.163] ; P interaction =0.014). Influence of nighttime on the treatment effect was only evident in patients with large vessel occlusion(daytime, acOR 0.766 [95% CI, 0.548–1.072]; nighttime, acOR, 1.785 [95% CI, 1.024–3.112] ; P interaction 〈 0.01); no heterogeneity was observed for other stroke subtypes ( P interaction 〉 0.1 for all comparisons). We observed longer delays in alteplase administration, interhospital transfers, and mechanical thrombectomy initiation during nighttime in patients allocated to local stroke centers. Conclusions: Among patients evaluated during nighttime for a suspected acute severe stroke in non-urban areas of Catalonia, direct transport to a thrombectomy-capable center was associated with lower degrees of disability at 90 days. This association was only evident in patients with confirmed large vessel occlusion on vascular imaging. Time delays in alteplase administration and interhospital transfers might mediate the observed differences in clinical outcome. Registration: URL: https://www.clinicaltrials.gov ; Unique identifier: NCT02795962.
    Type of Medium: Online Resource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2023
    detail.hit.zdb_id: 1467823-8
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  • 3
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 53, No. 3 ( 2022-03), p. 845-854
    Abstract: Mechanical thrombectomy (MT) in ischemic stroke patients with poor prestroke conditions remains controversial. We aimed to analyze the frequency of previously disabled patients treated with MT in clinical practice, the safety and clinical response to MT of patients with preexisting disability, and the disabled patient characteristics associated with a better response to MT. Methods: We studied all consecutive patients with anterior circulation occlusion treated with MT from January 2017 to December 2019 included in the Codi Ictus Catalunya registry—a government-mandated, prospective, hospital-based data set. Prestroke disability was defined as modified Rankin Scale score 2 or 3. Functional outcome at 90 days was centrally assessed by a blinded evaluator of the Catalan Stroke Program. Favorable outcome (to return at least to prestroke modified Rankin Scale at 90 days) and safety and secondary outcomes were compared with patients without previous disability. Logistic regression analysis was used to assess the association between prestroke disability and outcomes and to identify a disabled patient profile with favorable outcome after MT. Results: Of 2487 patients included in the study, 409 (17.1%) had prestroke disability (313 modified Rankin Scale score 2 and 96 modified Rankin Scale score 3). After adjustment for covariates, prestroke disability was not associated with a lower chance of achieving favorable outcome at 90 days (24% versus 30%; odds ratio, 0.79 [0.57–1.08]), whereas it was independently associated with a higher risk of symptomatic intracranial hemorrhage (5% versus 3%; odds ratio, 2.04 [1.11–3.72] ) and long-term mortality (31% versus 18%; odds ratio, 1.74 [1.27–2.39]) compared with patients without disability. Prestroke disabled patients without diabetes, Alberta Stroke Program Early CT Score 〉 8 and National Institutes of Health Stroke Scale score 〈 17 showed similar safety and outcome results after MT as patients without prestroke disability. Conclusions: Despite a higher mortality and risk of symptomatic intracranial hemorrhage, prestroke-disabled patients return as often as independent patients to their prestroke level of function, especially those nondiabetic patients with favorable early ischemic signs profile. These data support a potential benefit of MT in patients with previous mild or moderate disability after large anterior vessel occlusion stroke.
    Type of Medium: Online Resource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2022
    detail.hit.zdb_id: 1467823-8
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  • 4
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 53, No. 11 ( 2022-11), p. 3289-3294
    Abstract: We analyzed the main factors associated with intravenous thrombolysis (IVT) in patients with minor ischemic stroke. Methods: Data were obtained from a prospective, government-mandated, population-based registry of stroke code patients in Catalonia (6 Comprehensive Stroke Centers, 8 Primary Stroke Centers, and 14 TeleStroke Centers). We selected patients diagnosed with ischemic stroke and National Institutes of Health Stroke Scale (NIHSS) ≤5 at hospital admission from January 2016 to December 2020. We excluded patients with a baseline modified Rankin Scale score of ≥3, absolute contraindication for IVT, unknown stroke onset, or admitted to hospital beyond 4.5 after stroke onset. The main outcome was treatment with IVT. We performed univariable and binary logistic regression analyses to identify the most important factors associated with IVT. Results: We included 2975 code strokes; 1433 (48.2%) received IVT of which 30 (2.1%) had a symptomatic hemorrhagic transformation. Patients treated with IVT as compared to patients who did not receive IVT were more frequently women, had higher NIHSS, arrived earlier to hospital, were admitted to a Comprehensive Stroke Centers, and had large vessel occlusion. After binary logistic regression, NIHSS score 4 to 5 (odds ratio, 40.62 [95% CI, 31.73–57.22]; P 〈 0.001) and large vessel occlusion (odds ratio, 16.39 [95% CI, 7.25–37.04]; P 〈 0.001) were the strongest predictors of IVT. Younger age, female sex, baseline modified Rankin Scale score of 0, earlier arrival to hospital ( 〈 120 minutes after stroke onset), and the type of stroke center were also independently associated with IVT. The weight of large vessel occlusion on IVT was higher in patients with lower NIHSS. Conclusions: Minor stroke female patients, with higher NIHSS, arriving earlier to the hospital, presenting with large vessel occlusion and admitted to a Comprehensive Stroke Centers were more likely to receive intravenous thrombolysis.
    Type of Medium: Online Resource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2022
    detail.hit.zdb_id: 1467823-8
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  • 5
    In: European Journal of Emergency Medicine, Ovid Technologies (Wolters Kluwer Health), Vol. 16, No. 3 ( 2009-06), p. 139-144
    Type of Medium: Online Resource
    ISSN: 0969-9546
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2009
    detail.hit.zdb_id: 2028878-5
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  • 6
    In: American Journal of Gastroenterology, Ovid Technologies (Wolters Kluwer Health), Vol. 111, No. 6 ( 2016-06), p. 912-
    Type of Medium: Online Resource
    ISSN: 0002-9270
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2016
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  • 7
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 49, No. 5 ( 2018-05), p. 1279-1281
    Abstract: We assessed whether the load of cerebral small vessel disease (cSVD) and its individual markers, including lacunes, white matter hyperintensities, microbleeds, and enlarged perivascular spaces (EPVS), are associated with arterial stiffness. Methods— We evaluated cSVD markers in a cohort of 782 hypertensive individuals without history of stroke or dementia. The load of the disease was calculated using an ordinal scale ranging from 0 to 4 (1 point was given for each of the 4 markers examined). The arterial stiffness was tested by measuring the carotid–femoral pulse wave velocity with an oscillometric automatic device. Results— The mean age of the participants (49.6% women) was 62.7±5.4 years, and the mean systolic/diastolic blood pressure was 142.9/77.3 mm Hg (55.5% of the participants had poor blood pressure control). We found 7.2% cases with lacunes, 6.4% with microbleeds, 6.7% with extensive white matter hyperintensities, 24.5% with extensive basal ganglia EPVS, and 40.1% with extensive EPVS in the centrum semiovale. Regarding the cSVD load, 19.7% of the participants scored 1, 6.5% scored 2, and 1.4% scored ≥3. The median carotid–femoral pulse wave velocity was 10.5 m/s (interquartile range, 9.2–11.9) and was associated with lacunes (odds ratio per carotid–femoral pulse wave velocity SD increase, 1.51; 95% confidence interval, 1.13–2.03), extensive basal ganglia EPVS (odds ratio, 1.39; 95% confidence interval, 1.16–1.67), and cSVD load (common odds ratio, 1.42; 95% confidence interval, 1.19–1.68). Conclusions— We found that, in a cohort of hypertensive individuals, the arterial stiffness is associated with the total load of the cSVD, especially with lacunes and basal ganglia EPVS.
    Type of Medium: Online Resource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2018
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  • 8
    In: Stroke: Vascular and Interventional Neurology, Ovid Technologies (Wolters Kluwer Health), Vol. 3, No. 5 ( 2023-09)
    Abstract: Our goal is to evaluate whether the administration of thrombolytic treatment has varying effects on clinical and radiological outcomes in patients with large‐vessel occlusion stroke, based on the type of stroke center where the treatment was given (thrombectomy‐capable center versus local stroke center). Methods We included patients with an acute ischemic large‐vessel occlusion stroke who were directly admitted to thrombectomy‐capable centers and treated with endovascular thrombectomy, or were transferred from local stroke centers as thrombectomy candidates, in Catalonia, Spain, between 2017 and 2021. The primary outcome was the shift analysis on the modified Rankin scale score at 90 days. Secondary outcomes included death at 90 days and the rate of parenchymal hemorrhage and successful reperfusion. Inverse‐probability weighting clustered at the type of stroke center was used to estimate the effects. Results The analysis included 2268 patients directly admitted to thrombectomy‐capable centers, of whom 975 (49%) were treated with thrombolysis, and 938 patients transferred from local stroke centers, of whom 580 (66%) were treated with thrombolysis and 616 (67%) were treated with thrombectomy. Mean age was 72 (SD ±13) years, median National Institute of Health Stroke Scale score was 17 (interquartile range, 12–21), and 1363 patients were women (48%). Patients treated with intravenous thrombolysis were younger, had shorter time from onset to first image, higher Alberta Stroke Program Early Computed Tomography Score, and lower rates of wake‐up stroke, atrial fibrillation, and anticoagulation intake. Patients treated with thrombolysis had better functional outcome at 90 days, with no difference between patients directly admitted to thrombectomy‐capable centers (adjusted common odds ratio [acOR], 1.50 [95% CI, 1.24–1.81] ) and patients transferred from local stroke centers (acOR, 1.44 [95% CI, 1.04–2.01]). Patients treated with intravenous thrombolysis had lower death rate, higher rate of parenchymal hematoma, and similar rate of successful reperfusion, with no difference according to type of center ( P interaction 〉 0.1). Conclusion Administration of intravenous thrombolysis in patients with a large‐vessel stroke with intention of thrombectomy was associated with lower degrees of disability, lower death rate, and higher rates of parenchymal hematoma both in thrombectomy‐capable centers and in local stroke centers.
    Type of Medium: Online Resource
    ISSN: 2694-5746
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2023
    detail.hit.zdb_id: 3144224-9
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  • 9
    In: Stroke: Vascular and Interventional Neurology, Ovid Technologies (Wolters Kluwer Health), Vol. 2, No. 6 ( 2022-11)
    Abstract: Door‐in–door‐out time (DIDO) in nonthrombectomy stroke centers is a key performance indicator in acute stroke care. Nonetheless, the relative importance of DIDO on outcome in patients transferred for endovascular treatment (EVT) is not widely known. Therefore, we aim to explore the association between DIDO and clinical outcome according to onset to reperfusion time in patients undergoing EVT. Methods Observational multicenter study including patients transferred to a thrombectomy‐capable center from a local stroke center who underwent thrombectomy. The primary outcome was favorable clinical outcome, as evaluated by a modified Rankin Scale score of 0 to 2 at 3 months. We evaluated the association between DIDO and clinical outcome according to onset to reperfusion time and factors related to shorter DIDO time. Results Among 2710 patients transferred for thrombectomy evaluation, 970 (43.8%) patients received EVT. Median baseline National Institutes of Health Stroke Scale and DIDO time were 12 (interquartile range [IQR], 6–19) and 83 minutes (IQR, 66–108), respectively. Among patients undergoing EVT, no association was found between DIDO and clinical outcome. Considering only patients treated in the early time window (onset to reperfusion time ≤240 minutes), patients with favorable outcome had a shorter DIDO (60 [IQR, 52–68] versus 73 [IQR, 61–83] minutes; P =0.013). A receiver operating characteristic curve identified a cutoff of 67 minutes of DIDO time that better predicted favorable outcome (sensitivity, 70%; specificity, 73%; area under the curve, 0.741). A multivariate analysis showed that DIDO ≤67 minutes emerged as an independent factor associated with favorable outcome (odds ratio [OR], 5.29 [95% CI, 1.38–20.27] ; P =0.015). Door to computed tomography time was the only factor associated with DIDO ≤67 minutes (OR, 1.113 [95% CI, 1.018–1.261]; P =0.022) in a multivariate analysis in this time frame. Conclusions In transferred patients undergoing EVT, DIDO has a significant impact on clinical outcome, mainly in the first hours from stroke onset. A benchmark of 67 minutes in DIDO time is proposed. Shorter door to computed tomography time appears to be an independent factor associated to achieve DIDO time ≤67 minutes. Measures to optimize workflow into referral centers are warranted.
    Type of Medium: Online Resource
    ISSN: 2694-5746
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2022
    detail.hit.zdb_id: 3144224-9
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  • 10
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 48, No. 5 ( 2017-05), p. 1344-1352
    Abstract: Long-term benefits of initiating stroke prophylaxis in the emergency department (ED) are unknown. We analyzed the long-term safety and benefits of ED prescription of anticoagulation in atrial fibrillation patients. Methods— Prospective, multicenter, observational cohort of consecutive atrial fibrillation patients was performed in 62 Spanish EDs. Clinical variables and thromboprophylaxis prescribed at discharge were collected at inclusion. Follow-up at 1 year post-discharge included data about thromboprophylaxis and its complications, major bleeding, and death; risk was assessed with univariate and bivariate logistic regression models. Results— We enrolled 1162 patients, 1024 (88.1%) at high risk according to CHA 2 DS 2 -VASc score. At ED discharge, 935 patients (80.5%) were receiving anticoagulant therapy, de novo in 237 patients (55.2% of 429 not previously treated). At 1 year, 48 (4.1%) patients presented major bleeding events, and 151 (12.9%) had died. Anticoagulation first prescribed in the ED was not related to major bleeding (hazard ratio, 0.976; 95% confidence interval, 0.294–3.236) and was associated with a decrease in mortality (hazard ratio, 0.398; 95% confidence interval, 0.231–0.686). Adjusting by the main clinical and sociodemographic characteristics, concomitant antiplatelet treatment, or destination (discharge or admission) did not affect the results. Conclusions— Prescription of anticoagulation in the ED does not increase bleeding risk in atrial fibrillation patients at high risk of stroke and contributes to decreased mortality.
    Type of Medium: Online Resource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2017
    detail.hit.zdb_id: 1467823-8
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