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  • 1
    In: International Journal of Cardiology, Elsevier BV, Vol. 251 ( 2018-01), p. 45-50
    Materialart: Online-Ressource
    ISSN: 0167-5273
    Sprache: Englisch
    Verlag: Elsevier BV
    Publikationsdatum: 2018
    ZDB Id: 1500478-8
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 2
    In: JAMA, American Medical Association (AMA), Vol. 327, No. 18 ( 2022-05-10), p. 1782-
    Kurzfassung: In nonurban areas with limited access to thrombectomy-capable centers, optimal prehospital transport strategies in patients with suspected large-vessel occlusion stroke are unknown. Objective To determine whether, in nonurban areas, direct transport to a thrombectomy-capable center is beneficial compared with transport to the closest local stroke center. Design, Setting, and Participants Multicenter, population-based, cluster-randomized trial including 1401 patients with suspected acute large-vessel occlusion stroke attended by emergency medical services in areas where the closest local stroke center was not capable of performing thrombectomy in Catalonia, Spain, between March 2017 and June 2020. The date of final follow-up was September 2020. Interventions Transportation to a thrombectomy-capable center (n = 688) or the closest local stroke center (n = 713). Main Outcomes and Measures The primary outcome was disability at 90 days based on the modified Rankin Scale (mRS; scores range from 0 [no symptoms] to 6 [death] ) in the target population of patients with ischemic stroke. There were 11 secondary outcomes, including rate of intravenous tissue plasminogen activator administration and thrombectomy in the target population and 90-day mortality in the safety population of all randomized patients. Results Enrollment was halted for futility following a second interim analysis. The 1401 enrolled patients were included in the safety analysis, of whom 1369 (98%) consented to participate and were included in the as-randomized analysis (56% men; median age, 75 [IQR, 65-83] years; median National Institutes of Health Stroke Scale score, 17 [IQR, 11-21] ); 949 (69%) comprised the target ischemic stroke population included in the primary analysis. For the primary outcome in the target population, median mRS score was 3 (IQR, 2-5) vs 3 (IQR, 2-5) (adjusted common odds ratio [OR], 1.03; 95% CI, 0.82-1.29). Of 11 reported secondary outcomes, 8 showed no significant difference. Compared with patients first transported to local stroke centers, patients directly transported to thrombectomy-capable centers had significantly lower odds of receiving intravenous tissue plasminogen activator (in the target population, 229/482 [47.5%] vs 282/467 [60.4%]; OR, 0.59; 95% CI, 0.45-0.76) and significantly higher odds of receiving thrombectomy (in the target population, 235/482 [48.8%] vs 184/467 [39.4%]; OR, 1.46; 95% CI, 1.13-1.89). Mortality at 90 days in the safety population was not significantly different between groups (188/688 [27.3%] vs 194/713 [27.2%]; adjusted hazard ratio, 0.97; 95% CI, 0.79-1.18). Conclusions and Relevance In nonurban areas in Catalonia, Spain, there was no significant difference in 90-day neurological outcomes between transportation to a local stroke center vs a thrombectomy-capable referral center in patients with suspected large-vessel occlusion stroke. These findings require replication in other settings. Trial Registration ClinicalTrials.gov Identifier: NCT02795962
    Materialart: Online-Ressource
    ISSN: 0098-7484
    RVK:
    Sprache: Englisch
    Verlag: American Medical Association (AMA)
    Publikationsdatum: 2022
    ZDB Id: 2958-0
    ZDB Id: 2018410-4
    SSG: 5,21
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 3
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 53, No. 12 ( 2022-12), p. 3728-3740
    Kurzfassung: 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.
    Materialart: Online-Ressource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Sprache: Englisch
    Verlag: Ovid Technologies (Wolters Kluwer Health)
    Publikationsdatum: 2022
    ZDB Id: 1467823-8
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 4
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 54, No. 3 ( 2023-03), p. 770-780
    Kurzfassung: 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.
    Materialart: Online-Ressource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Sprache: Englisch
    Verlag: Ovid Technologies (Wolters Kluwer Health)
    Publikationsdatum: 2023
    ZDB Id: 1467823-8
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 5
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 50, No. 7 ( 2019-07), p. 1819-1824
    Kurzfassung: Risk factor control and treatment compliance in the following months after stroke are poor. We aim to validate a digital platform for smartphones to raise awareness among patients about the need to adopt healthy lifestyle, improve communication with medical staff, and treatment compliance. Methods— Farmalarm is an application (app) for smartphones designed to increase stroke awareness by medication alerts and compliance control, chat communication with medical staff, didactic video files, exercise monitoring. Patients with stroke discharged home were screened for participation and divided into groups: to follow the FARMALARM program for 3 to 4 weeks or standard of care follow-up. We determined achievement of risk factor control goals at 90 days. Results— From August 2015 to December 2016, from the 457 patients discharged home, 159 (34.8%) were included: Farmalarm (n=107); age 57±12, Control (n=52), age 59±10; without significant differences in baseline characteristics between groups. At 90 days, knowledge of vascular risk factors was higher in FARMALARM group (86.0% versus 69.2%, P 〈 0.01). The rate of patients with diabetes mellitus (83.2% versus 63.5%, P 〈 0.01) and hypercholesterolemia (80.3% versus 63.5%, P =0.03) under control and the rate of patients with 4 out of 4 risk factors under control was higher in FARMALARM group (50.4% versus 30.7%, P =0.02). A regression model showed that the use of Farmalarm was independently associated with all risk factors under control at 90 days (odds ratio, 2.3; 95% CI, 1.14–4.6; P =0.02). Conclusions— In patients with stroke discharged home, the use of mobile apps to monitor medication compliance and increase stroke awareness is feasible and seems to improve the control of vascular risk factors.
    Materialart: Online-Ressource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Sprache: Englisch
    Verlag: Ovid Technologies (Wolters Kluwer Health)
    Publikationsdatum: 2019
    ZDB Id: 1467823-8
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 6
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 45, No. 9 ( 2014-09), p. 2734-2738
    Kurzfassung: Although tissue-type plasminogen activator (tPA) efficacy depends on time, it is unknown whether its effect on recanalization is time dependent. Information about likelihood of successful recanalization as a function of time to treatment may improve patient selection for advanced reperfusion strategies. We aimed to identify the impact of time to treatment on tPA-induced recanalization in patients with acute ischemic stroke. Methods— Consecutive patients with intracranial acute occlusion treated with intravenous tPA underwent transcranial Doppler examination before and 1 hour after tPA administration. Patients were categorized according to occlusion localization in proximal and distal occlusion. Sequential analysis of recanalization according to time to treatment was performed for every 30-minute cutoff point. Results— Overall (n=508), 54.3% had proximal and 45.7% had distal occlusion. Median time to treatment was 171.4±61.9 minutes, and 5.9% were treated 〉 270 minutes. Recanalization occurred in 36.1% of patients. There was no linear association between time to treatment and time to recanalization, but sequential analysis showed that patients treated 〉 270 minutes had a lower recanalization rate. Lower National Institutes of Health Stroke Scale score on admission (odds ratio [OR], 0.305; 95% confidence interval [CI] , 0.1–0.933) and time to treatment ≤270 minutes (OR, 0.995; 95% CI, 0.99–0.999) emerged as independent predictors of recanalization. In patients with proximal occlusion, 41.8% recanalized. Time to treatment 〉 90 minutes was associated with lower recanalization rate. However, only younger age (OR, 0.975; 95% CI, 0.952–0.999) and lower baseline National Institutes of Health Stroke Scale score (OR, 0.921; 95% CI, 0.855–0.993) independently predicted recanalization. In distal occlusion patients, male sex was the only independent predictor of recanalization (OR, 0.416; 95% CI, 0.195–0.887). None recanalized 〉 270 minutes. Conclusions— The effect of tPA on recanalization may decrease over time. Treatment 〉 270 minutes predicted lack of recanalization, especially in distal occlusions.
    Materialart: Online-Ressource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Sprache: Englisch
    Verlag: Ovid Technologies (Wolters Kluwer Health)
    Publikationsdatum: 2014
    ZDB Id: 1467823-8
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 7
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 46, No. 10 ( 2015-10), p. 2849-2852
    Kurzfassung: Multiparametric imaging is meant to identify nonreversible lesions and predict on admission the minimum final infarct volume, a strong predictor of outcome. We aimed to confirm this hypothesis and define the maximal admission lesion volume compatible with favorable outcome (MALCOM). Methods— We studied patients with internal carotid artery/middle cerebral artery occlusion selected with multiparametric computed tomography/magnetic resonance imaging, who underwent endovascular procedures. Admission infarct core was measured on initial cerebral blood volume–computed tomography perfusion or diffusion weighted imaging–magnetic resonance imaging. We defined percentage of lesion growth (final lesion admission core/admission core) and MALCOM: cutoff admission core volume above which probability of modified Rankin Scale 0 to 2 is 〈 10%. Results— Fifty-seven patients were studied (29 magnetic resonance imaging and 28 computed tomography perfusion). Mean core volume was 28±22 mL, and recanalization thrombolysis in cerebral ischemia 2b-3 was 77%. At 24 hours, mean infarct volume was 64±97 mL, and at 3 months modified Rankin Scale 0 to 2 was 45%. Median lesion growth was smaller in recanalizers (16.7% versus 198.3%; P 〈 0.01). MALCOM was 39 mL. When recanalization was achieved, 64% of patients within MALCOM ( 〈 39 mL) achieved favorable outcome, whereas despite recanalization only 12% of patients beyond MALCOM ( 〉 39 mL) achieved modified Rankin Scale 0 to 2 ( P =0.01). A regression model adjusted for age and recanalization showed that the only predictor of favorable outcome was having admission core lesion below MALCOM (OR: 9.3, 95% CI: 1.9–46.4; P 〈 0.01). Analysis according to imaging modality showed that computed tomography–cerebral blood volume allowed larger MALCOM (42 mL) than magnetic resonance–diffusion weighted imaging (29 mL). In octogenarians, MALCOM (15 mL) was lower in younger patients (40 mL). Conclusions— Admission lesion core is associated with final infarct volume and is a strong predictor of favorable outcome. MALCOM according to imaging modality and patient age could be set and used on admission to select candidates for endovascular procedures.
    Materialart: Online-Ressource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Sprache: Englisch
    Verlag: Ovid Technologies (Wolters Kluwer Health)
    Publikationsdatum: 2015
    ZDB Id: 1467823-8
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 8
    In: European Neurology, S. Karger AG, Vol. 72, No. 3-4 ( 2014), p. 203-208
    Kurzfassung: 〈 b 〉 〈 i 〉 Background: 〈 /i 〉 〈 /b 〉 Little is known about the relationships between different systolic blood pressure (SBP) thresholds and their outcomes in acute intracerebral hemorrhage (ICH). We aimed to determine the associations of potential systolic blood pressure (SBP) thresholds with hematoma growth (HG) and clinical outcome in patients with acute ICH. 〈 b 〉 〈 i 〉 Methods: 〈 /i 〉 〈 /b 〉 117 patients with acute ( 〈 6 h) spontaneous supratentorial ICH underwent blood pressure monitoring at 15 min interval over the first 24 h. SBP thresholds of 140, 150, 160, 170, 180, 190, and 200 mm Hg were assessed by means of the percentage of 24-hour values exceeding each threshold (SBP load). HG at 24 h, early neurological deterioration (END), 24-hour and 90-day mortality, and poor outcome were recorded. 〈 b 〉 〈 i 〉 Results: 〈 /i 〉 〈 /b 〉 SBP 170, 180, 190, and 200 loads were significantly correlated with the amount of both absolute and relative hematoma enlargement at 24 h. In multivariate analyses, SBP 170 load was related to HG and END, while SBP 160 load was associated with mortality at 24 h. No thresholds were independently related to outcomes at 90 days. 〈 b 〉 〈 i 〉 Conclusion: 〈 /i 〉 〈 /b 〉 In patients with acute ICH, SBP lowering to at least less than 160 mm Hg threshold may be needed to minimize the deleterious effect of high SBP on 24-hour outcomes.
    Materialart: Online-Ressource
    ISSN: 0014-3022 , 1421-9913
    RVK:
    Sprache: Englisch
    Verlag: S. Karger AG
    Publikationsdatum: 2014
    ZDB Id: 1482237-4
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 9
    In: Journal of Neuroimaging, Wiley, Vol. 25, No. 3 ( 2015-05), p. 365-369
    Kurzfassung: Cardiac Echoscan is the simplified transthoracic echocardiogram focused on the main source of emboli detection in the acute stroke diagnosis (Stroke Echoscan). We describe the clinical impact related to the Stroke Echoscan protocol in our Center. METHODS Acute stroke patients who underwent the Stroke Echoscan by a trained stroke neurologist were included (Echoscan group). All examinations were reviewed by cardiologists. The main embolic stroke etiologies were: ventricular akinesia (VA), severe aortic atheroma (AA) plaque and cardiac shunt (SHUNT). The rate of the embolic stroke etiologies and the median length of stay (LOS) were compared with a cohort of patients studied by cardiologist (Echo group). RESULTS Eighty acute stroke patients were included. The sensitivity (S) and specificity (E) were: VA ( S 98.6%, E 66.7%, k = .7), AA ( S 93.3%, E 96.9%, k = .88) and SHUNT ( S 100%, E 100%, k = 1), respectively. The rate of AA diagnosis was significantly higher in Echoscan group (18.8% vs. 8.9%; P = .05). Echoscan protocol significantly reduced the LOS: 6 days (IQR 3‐10) versus Echo group 9 days (IQR 6‐13; P 〈 .001). CONCLUSION The Echoscan protocol was an accurate quick test, which reduced the length of stay and increased the percentage of severe AA plaque diagnosis.
    Materialart: Online-Ressource
    ISSN: 1051-2284 , 1552-6569
    URL: Issue
    Sprache: Englisch
    Verlag: Wiley
    Publikationsdatum: 2015
    ZDB Id: 2035400-9
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 10
    In: Ultrasound in Medicine & Biology, Elsevier BV, Vol. 47, No. 5 ( 2021-05), p. 1428-
    Materialart: Online-Ressource
    ISSN: 0301-5629
    RVK:
    Sprache: Englisch
    Verlag: Elsevier BV
    Publikationsdatum: 2021
    ZDB Id: 1498918-9
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
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