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  • 1
    In: Journal of NeuroInterventional Surgery, BMJ
    Abstract: The influence of vascular imaging acquisition on workflows at local stroke centers (LSCs) not capable of performing thrombectomy in patients with a suspected large vessel occlusion (LVO) stroke remains uncertain. We analyzed the impact of performing vascular imaging (VI+) or not (VI− at LSC arrival on variables related to workflows using data from the RACECAT Trial. Objective To compare workflows at the LSC among patients enrolled in the RACECAT Trial with or without VI acquisition. Methods We included patients with a diagnosis of ischemic stroke who were enrolled in the RACECAT Trial, a cluster-randomized trial that compared drip-n-ship versus mothership triage paradigms in patients with suspected acute LVO stroke allocated at the LSC. Outcome measures included time metrics related to workflows and the rate of interhospital transfers and thrombectomy among transferred patients. Results Among 467 patients allocated to a LSC, vascular imaging was acquired in 277 patients (59%), of whom 198 (71%) had a LVO. As compared with patients without vascular imaging, patients in the VI+ group were transferred less frequently as thrombectomy candidates to a thrombectomy-capable center (58% vs 74%, P=0.004), without significant differences in door-indoor-out time at the LSC (median minutes, VI+ 78 (IQR 69–96) vs VI− 76 (IQR 59–98), P=0.6). Among transferred patients, the VI+ group had higher rate of thrombectomy (69% vs 55%, P=0.016) and shorter door to puncture time (median minutes, VI+ 41 (IQR 26–53) vs VI− 54 (IQR 40–70), P 〈 0.001). Conclusion Among patients with a suspected LVO stroke initially evaluated at a LSC, vascular imaging acquisition might improve workflow times at thrombectomy-capable centers and reduce the rate of futile interhospital transfers. These results deserve further evaluation and should be replicated in other settings and geographies.
    Type of Medium: Online Resource
    ISSN: 1759-8478 , 1759-8486
    Language: English
    Publisher: BMJ
    Publication Date: 2023
    detail.hit.zdb_id: 2506028-4
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  • 2
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 54, No. Suppl_1 ( 2023-02)
    Abstract: Objective: To assess whether the effect of intravenous thrombolysis in patients with large-vessel occlusion differed between patients directly admitted to thrombectomy-capable centers and patients transferred from local stroke centers without thrombectomy capabilities. Methods: We included 3206 patients with an acute ischemic large-vessel stroke with first imaging within 7 hours after onset that were directly admitted to thrombectomy-capable centers and treated with thrombectomy, or transferred from local stroke centers for thrombectomy evaluation, between 2017 and 2021 in Catalonia, Spain. Primary outcome was the degree of disability at 90 days, as evaluated by the shift analysis on the mRs score. Secondary outcomes included mortality 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 (975[49%] treated with thrombolysis) directly admitted to thrombectomy-capable centers and 938 patients (580[66%] treated with thrombolysis and 616[67%] treated with thrombectomy) transferred from local stroke centers (mean age 72±13 years, median NIHSS score 17[IQR 12-21] , 1363 female[48%]). Patients treated with intravenous thrombolysis were younger, had shorter time from onset to first image acquisition, and higher rates of wake-up stroke, atrial fibrillation and anticoagulation intake. The effect of intravenous thrombolysis on the primary outcome was similar in patients directly admitted to thrombectomy-capable centers (acOR 1.50, 95% CI 1.24-1.81) and patients transferred from local stroke centers (acOR 1.44, 95% CI 1.04 to 2.01)(p interaction =0.68). Patients treated with intravenous thrombolysis had lower mortality 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 to thrombectomy was associated with higher odds of good functional outcome and higher rates of parenchymal hematoma, independently of the type of stroke center were it was administered.
    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: Journal of NeuroInterventional Surgery, BMJ
    Abstract: The ANGIOCAT trial showed a clinical benefit of direct to angiography suite (DTAS) for patients with large vessel occlusion (LVO) stroke admitted within 6 hours after symptom onset in decreased hospital workflow time and improved clinical outcome. However, the impact of DTAS implementation on hospital costs is unknown. This economic evaluation aims to assess the cost-utility of DTAS from the provider (hospital) perspective. Methods A cost-utility analysis was applied to compare DTAS with the standard direct to CT (DTCT) suite approach using direct cost and health outcomes data. The time horizon was 90 days. One-way sensitivity analysis as well as probabilistic sensitivity analysis was performed, varying the model parameters by ±25%. Measures included costs, quality-adjusted life years, and incremental cost-effectiveness ratios. Health outcomes, classified according to the modified Rankin Scale, were obtained from the ANGIOCAT trial. Respective utilities were obtained from the literature. Results DTAS is the dominant strategy. The incremental cost-effectiveness ratio is −€89 110 (−$97 600) with cost saving per patient of –€2848 (–$3120). The improved clinical outcome is directly related with a decrease in costs for the hospital, mainly due to the decrease in costs of hospital stay, improved clinical outcome and fewer complications. Conclusions For patients with LVO admitted within 6 hours after symptom onset, the DTAS not only improves clinical outcome but also decreases the costs (dominant option) compared with the standard DTCT. Multicentric international randomized clinical trials are ongoing to determine the replicability of our findings.
    Type of Medium: Online Resource
    ISSN: 1759-8478 , 1759-8486
    Language: English
    Publisher: BMJ
    Publication Date: 2023
    detail.hit.zdb_id: 2506028-4
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  • 4
    In: International Journal of Stroke, SAGE Publications, Vol. 15, No. 9 ( 2020-12), p. 988-994
    Abstract: Transfer protocols from primary to comprehensive stroke centers are crucial for endovascular treatment success. Aim To evaluate clinical and neuroimaging data of transferred patients and their likelihood of presenting a large infarct core at comprehensive stroke center arrival. Methods Retrospective analysis of population-based mandatory prospective registry of acute stroke patients evaluated for endovascular treatment. Consecutive patients evaluated at primary stroke center with suspected large vessel occlusion and PSC-ASPECTS ≥ 6 transferred to a comprehensive stroke center were included. PSC and CSC-ASPECTS, time-metrics, and clinical data were analyzed. Results During 28 months, 1185 endovascular treatment candidates were transferred from PC to comprehensive stroke center in our public stroke network, 477 had an anterior circulation syndrome and available neuroimaging information and were included. Median baseline NIHSS was 13 (8–19). On arrival to comprehensive stroke center, large vessel occlusion was confirmed in 60.2% patients, and 41.2% received endovascular treatment. Median interfacility ASPECTS decay was 1 (0–2) after a median of 150.7 (SD 101) min between both CT-acquisitions. A logistic regression analysis adjusted by age, time from symptoms to PC-CT, and time from PC-CT to CSC-CT showed that only a baseline NIHSS and PSC-ASPECTS independently predicted a CSC-ASPECTS  〈  6. ROC curves identified baseline NIHSS ≥ 16 and PSC-ASPECTS ≤ 7 as the best cut-off points. The rate of CSC-ASPECTS  〈  6 increased from 7% to 57% among patients with NIHSS ≥ 16 and PSC-ASPECS ≤ 7. Conclusion After a median transfer time 〉 2 h, only 11.9% showed ASPECTS  〈  6 at the comprehensive stroke center. Activation of endovascular treatment teams should not require confirming neuroimaging on arrival and repeating neuroimaging at comprehensive stroke center should only be performed in selected cases.
    Type of Medium: Online Resource
    ISSN: 1747-4930 , 1747-4949
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2020
    detail.hit.zdb_id: 2211666-7
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  • 5
    In: Journal of NeuroInterventional Surgery, BMJ, Vol. 15, No. 7 ( 2023-07), p. 644-649
    Abstract: In patients with stroke undergoing endovascular treatment (EVT), long-term outcome is usually only evaluated by the modified Rankin Scale (mRS). Patient-reported outcomes (PROMs) are standardized assessments that consider clinical outcomes from the perspective of the patient. We aimed to evaluate PROMs through a smartphone-based communication platform in patients with stroke who received EVT. Methods Consecutive patients with stroke who underwent EVT were offered to participate in the PROMs-through-App program (NORA). A set of standardized PROMs were collected at 7, 30 and 90 days after discharge. Disability was determined by clinicians (mRS) at 90 days. To characterize the potential ceiling effect of mRS in the assessment of different domains, the rate of abnormal PROMs among patients with excellent outcome (mRS 0–1) was calculated. Results From June 2020 to October 2021, 186 patients were included. The median PROMs collection rate per patient was 80% (50–100%). A correlation was consistently seen between disability measured by mRS and the different PROMs. The rate of abnormal PROMs ranged from 20.83% (HADS at 7 days) to 59.61% (Mental PROMIS at 7 days). At 90 days, among patients with an excellent outcome, the rate of abnormal PROMs ranged from 8.7% (HADS) to 47.83% (Physical PROMIS). Conclusions A specifically designed digital platform allows a high collection rate of PROMs among stroke patients who underwent EVT. The mRS score shows a ceiling effect and seems insufficient to fine-tune long-term clinical results. The use of PROMs may allow a better characterization of long-term outcome profiles after EVT.
    Type of Medium: Online Resource
    ISSN: 1759-8478 , 1759-8486
    Language: English
    Publisher: BMJ
    Publication Date: 2023
    detail.hit.zdb_id: 2506028-4
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  • 6
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 53, No. Suppl_1 ( 2022-02)
    Abstract: Background: Endovascular treatment (EVT) for acute ischemic stroke (AIS) between 6 to 24 hours is established as a standard of care among patients selected by multiparametric neuroimaging. Therefore, we aimed to explore neuroimaging parameters in late window AIS large vessel occlusion (LVO) patients and the association between findings in non-contrast computed tomography (NCCT) and multiparametric CT. Methods: We included consecutive AIS patients within 6-24 hours from symptoms onset with CTA-LVO. We studied potential associations between computed tomography mismatch defined by DAWN and/or DEFUSE-3 neuroimaging criteria (CTP-MM), infarct volume on CTP, and ASPECTS on NCCT. We also analyzed the association between neuroimaging parameters and outcome determined by 90-day mRS. Results: We included 206 patients, of which 176 (85.4%) presented CTP-MM and 184 (89.3%) presented with an ASPECTS ≥ 6 on admission. The rate of CTP-MM was 90.8% in patients with ASPECTS ≥ 6, as compared with 40.9% in those with low ASPECTS [Figure 1A] . The ASPECTS correlated with infarct core, determined by Cerebral Blood Flow 〈 30% volume (rP=-0.575, P 〈 0.001). In EVT-treated patients (185, 89.8%), after adjusting for identifiable confounders, the presence of CTP-MM was a predictor of 90-day functional independence (OR 3.38; 95%CI 1.01-11.29; P=0.048). We did not find an association between CTP-MM and 90-day functional disability (ordinal mRS shift, aOR 1.39; 95% CI 0.58-3.34; P=0.459) [Figure 1B] . Conclusions: A great majority of patients who presented a LVO in late window fulfilled guidelines imaging criteria to undergo EVT, especially those with high ASPECTS (≥ 6). Our data suggest that NCCT with CT angiography is a reasonable approach for acute ischemic stroke treatment selection also in the late window.
    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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  • 7
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 51, No. Suppl_1 ( 2020-02)
    Abstract: On CT perfusion (CTP), cerebral blood flow 〈 30% than the contralateral hemisphere (CBF 〈 30) is considered a marker of infarct core. Our hypothesis is that CBF 〈 30 defines a reversible poor hemodynamic area rather than core and aimed to study CBF 〈 30 evolution over time, its relationship with leptomeningeal collateral circulation (CC) and outcome parameters. Methods: Retrospective analysis of a prospective database of acute ischemic strokes who underwent CTP on admission and immediately after endovascular thrombectomy (EVT). CC was graded on CT angiography (CTA) by the modified Tan scale (good CC: 2-3 grades). Complete recanalization was defined by modified Thrombolysis in Cerebral Ischemia ≥ 2B. Final infarct volume (FIV) was semi-automatically measured on 48-72h CT; ghost core was defined as: admission CBF 〈 30 - FIV 〉 10cc. Results: We included 494 patients; median time from onset to CT: 137 min (IQR 68-238). Median CBF 〈 30 volume on admission: 8 cc (0-28). With longer onset-to-CT times ischemic changes progressively increased on non-contrast CT (ASPECTS decay r=-0.21, p 〈 0.01), however CBF 〈 30 progressively decreased (r=-0.13, p 〈 0.01). 294 patients (60.6%) presented good CC. Good CC was associated with lower admission CBF 〈 30 (median CBF 〈 30 on good CC: 0 cc (0-12) vs 28.5 (7-57) on poor CC, p 〈 0.01). In recanalized patients (419, 84.8%), CBF 〈 30 virtually disappeared in CTP post-EVT (n=103) (median CBF 〈 30: 0ml (IQR 0) (88%= 0 cc) despite that most patients developed established infarcts (median FIV 16 (4-50), 59% FIV 〉 10cc)). Even in recanalized patients, baseline CBF 〈 30 only moderately correlates with FIV (r=0.55, p 〈 0.01). A ghost core was identified in 13.7% (34.5% if CT was performed 〈 90min from onset). 46.6% patients had good functional outcome (mRS 〈 3 at 3 months). A multivariate analysis of recanalized patients showed that CC (OR 0.43, CI 0.27-0.69, p 〈 0.01) but not CBF 〈 30 was an independent predictor of functional outcome. Conclusion: CBF 〈 30 represents an hemodynamic state rather than established infarct core, evolving over time inversely as it should physiologically (increase of infarct core over time). CBF 〈 30 should be considered as an outcome predictor but not used as exclusion criterion for EVT, especially in early time-windows.
    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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  • 8
    Online Resource
    Online Resource
    Ovid Technologies (Wolters Kluwer Health) ; 2019
    In:  Stroke Vol. 50, No. Suppl_1 ( 2019-02)
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 50, No. Suppl_1 ( 2019-02)
    Abstract: Background: Risk factor control and treatment compliance in the following months after stroke are often poor. We aim to validate a digital platform for smartphones designed to raise awareness in patients about the need to perform healthy lifestyle changes, improve communication with medical staff and increase treatment compliance Methods: Farmalarm is an app for smartphones designed to increase stroke awareness by: medication visual alerts and compliance control, chat communication with medical staff, sharing didactic video files, exercise monitoring... Stroke patients discharged home were screened for participation and divided in two groups: to follow the FARMALARM program during 3-4 weeks or standard of care follow-up. We determined risk factor control goals at 90 days in all patients. Results: During 16 months, from all patients discharged home, 159 were included in the study: FARMALARM n=107; age 58±12, Control n=52, age 59±11. There were no significant differences in baseline characteristics between groups. At 90 days, mean of total cholesterol (156±37 vs. 169±50, p=0.01) and low-density-lipoprotein cholesterol (87±31 vs. 101±43, p 〈 0.01) were lower in the FARMALARM group. Achievement of risk factor control was higher in the FARMALARM group (p=0.03) and the rate of patients with 4/4 risk factors under control was higher in the FARMALARM group (42.2% Vs 14.7%; p=0.01). A regression model adjusted for age and gender showed that the only variable independently associated with all risk factors under control at 90 days was the use of Farmalarm (OR: 2.87; 95% CI:1.2-6.9;p=0.01). Conclusion: FARMALARM is a reliable mobile application to monitor medication compliance and increase stroke awareness in stroke patients discharged home and it could improve the control of vascular risk factors.
    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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  • 9
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 55, No. Suppl_1 ( 2024-02)
    Abstract: Introduction: Femoral artery is the most used access for mechanical thrombectomy (MT) in stroke patients with a large vessel occlusion. Routine radial access has been proposed as an alternative following cardiology guidelines although its safety and efficacy remain controversial. Hypothesis: Radial access for MT is non-inferior to femoral access in terms of final recanalization. Methods: The study was an investigator-initiated, single-center, evaluator-blinded randomized clinical trial. Stroke patients undergoing MT, with femoral artery patency and radial artery diameter ≥2.5mm were randomly assigned (1:1) to either radial (60 patients) or femoral access (60 patients). The primary binary outcome was successful recanalization (final eTICI score 2b-3) assigned by blinded evaluators. In the per protocol analysis, patients with allocated access failure were considered non-recanalized. We established a non-inferiority margin of -13.2%, considering an acceptable reduction of 15% in the expected recanalization rates. Results: From September 2021 to July 2023, 120 patients were randomly assigned and 114 (57 radial access, 57 femoral access) with confirmed intracranial occlusion on initial angiogram were included in the primary analysis. In the intention to treat analysis, successful recanalization was achieved in 48/57 (84.2%) patients assigned to femoral access and in 54/57(94.7%) patients assigned to radial (adjusted risk difference 3.36%, 95% CI –6.47% to 13%; p 〈 0.001). The lower limit of one-sided 95% CI was –4.8%, which did not cross our predefined margin of -13.2%. Median time from angiography suite arrival to first pass (femoral: 30 (IQR 25-37) minutes versus radial: 41 (IQR 33-62) minutes, p 〈 0.001) and from suite arrival to recanalization (femoral: 42 (IQR 28-74) versus radial: 59.5 (IQR 44-81) minutes, p 〈 0.050) were longer after radial access. Both groups presented one severe access complication and there was no difference in the rate of allocated access failure: radial 6 (10.5%) radial Vs femoral 5 (8.8%) (p=0.751). Conclusion: Among patients who underwent MT, radial access was non-inferior to femoral access in terms of final recanalization. Procedural delays may favor femoral access as default first approach.
    Type of Medium: Online Resource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2024
    detail.hit.zdb_id: 1467823-8
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  • 10
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 49, No. Suppl_1 ( 2018-01-22)
    Abstract: Background: Platelet function measured by Aggregometry tests (AT) are commonly used to measure the response to antiplatelets in patients undergoing intracranial and coronary stenting. However, its relevance in carotid and vertebral stents (CVS) is unsettled. We aimed to determine the yield of antiplatelet resistance (AR) in CVS patients, and its relationship with early restenosis and new ischemic lesions on magnetic resonance imaging (MRI). Methods: We studied consecutive patients undergoing CVS. Platelet function was assessed before stenting by means of VerifyNow-assay using Aspirin and P2Y12 cartridges. Antiplatelet reactivity was defined using the cut-off values ARU≥550 as Aspirin resistance (AASR) and PRU≥220 as Clopidogrel resistance (CR). Patients received baseline and 5-day MRI. Periprocedural complications, the new ischemic lesions at 5-day MRI and stent permeability by carotid ultrasound at 24 hours, 5 days and 3 months were analysed. Results: A total of 366 patients were screened. Of those, 246 patients were enrolled and tested for platelet function. A total of 135 patients (54.2%) showed AR, 48 AASR (19.5%) and 112 CR (45.5%). Aspirin dose after the test was increased in 21 patients (45.7%). In 22 patients (20%) with CR the daily dose was increased, in 40 patients (37.7%) an extra-loading dose was administrated and in 9 patients (8.4%) we increased both. At 24 hours, one patient showed restenosis 〉 50% and another an occlusion (0.4 and 0.4% respectively). At 5 days, 8 patients had restenosis 〈 50% (13.1%) and in 43 (17.5%) MRI showed new ischemic lesions. At 3 months 9 patients had stenosis 〉 50% (4.5%) and stenting-related recurrence was observed in 3 (1.4%). A larger size lesions at 5-day MRI (OR 0.143; 95%CI 0.028-0.719) and a multi-territorial ischemic pattern (OR 0.143; 95%CI 0.075-0.893) were associated with lack of response to Clopidogrel therapy. No significant differences in AASR were observed across different groups. Conclusion: The yield of antiplatelet resistance in our series was 54.2%. Clopidogrel resistance was associated with a larger size and a multi-territorial stroke pattern at 5-day MRI. More studies are needed to elucidate the clinical impact of Aggregometry test and management recommendations.
    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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