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  • 1
    In: Stroke, Ovid Technologies (Wolters Kluwer Health), Vol. 53, No. 3 ( 2022-03), p. 769-778
    Kurzfassung: The purpose of the COMPLETE (International Acute Ischemic Stroke Registry With the Penumbra System Aspiration Including the 3D Revascularization Device) registry was to evaluate the generalizability of the safety and efficacy of the Penumbra System (Penumbra, Inc, Alameda) in a real-world setting. Methods: COMPLETE was a global, prospective, postmarket, multicenter registry. Patients with large vessel occlusion–acute ischemic stroke who underwent mechanical thrombectomy using the Penumbra System with or without the 3D Revascularization Device as frontline approach were enrolled at 42 centers (29 United States, 13 Europe) from July 2018 to October 2019. Primary efficacy end points were successful postprocedure angiographic revascularization (modified Thrombolysis in Cerebral Infarction ≥2b) and 90-day functional outcome (modified Rankin Scale score 0–2). The primary safety end point was 90-day all-cause mortality. An imaging core lab determined modified Thrombolysis in Cerebral Infarction scores, Alberta Stroke Program Early CT Scores, clot location, and occurrence of intracranial hemorrhage at 24 hours. Independent medical reviewers adjudicated safety end points. Results: Six hundred fifty patients were enrolled (median age 70 years, 54.0% female, 49.2% given intravenous recombinant tissue-type plasminogen activator before thrombectomy). Rate of modified Thrombolysis in Cerebral Infarction 2b to 3 postprocedure was 87.8% (95% CI, 85.3%–90.4%). First pass and postprocedure rates of modified Thrombolysis in Cerebral Infarction 2c to 3 were 41.5% and 66.2%, respectively. At 90 days, 55.8% (95% CI, 51.9%–59.7%) had modified Rankin Scale score 0 to 2, and all-cause mortality was 15.5% (95% CI, 12.8%–18.3%). Conclusions: Using Penumbra System for frontline mechanical thrombectomy treatment of patients with large vessel occlusion–acute ischemic stroke in a real-world setting was associated with angiographic, clinical, and safety outcomes that were comparable to prior randomized clinical trials with stringent site and operator selection criteria. Registration: URL: https://www.clinicaltrials.gov ; Unique identifier: NCT03464565.
    Materialart: Online-Ressource
    ISSN: 0039-2499 , 1524-4628
    RVK:
    Sprache: Englisch
    Verlag: Ovid Technologies (Wolters Kluwer Health)
    Publikationsdatum: 2022
    ZDB Id: 1467823-8
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  • 2
    In: Clinical Neurology and Neurosurgery, Elsevier BV, Vol. 202 ( 2021-03), p. 106510-
    Materialart: Online-Ressource
    ISSN: 0303-8467
    Sprache: Englisch
    Verlag: Elsevier BV
    Publikationsdatum: 2021
    ZDB Id: 2004613-3
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  • 3
    In: Journal of NeuroInterventional Surgery, BMJ, Vol. 14, No. 3 ( 2022-03), p. 216-220
    Kurzfassung: The incidence of intracranial atherosclerotic disease (ICAD) in acute ischemic stroke treated with mechanical thrombectomy (MT) is not well defined, and its description may lead to improved stroke devices and rates of first pass success. Methods A retrospective study was performed on MT patients from 2012 to 2019 at a comprehensive stroke center using chart review and angiogram analysis. Angiograms at the time of MT were reviewed for ICAD, and location and severity were recorded. Patients with ICAD were divided according to ICAD location relative to the large vessel occlusion (LVO) site. Statistical analyses were performed on baseline demographics, comorbidities, MT procedure variables, outcome variables, and their association with ICAD. Results Of the 533 patients (mean age 70.4 (SD 13.20) years, 43.5% women), 131 (24.6%) had ICAD. There was no significant difference in favorable discharge outcomes (modified Rankin Scale score of 0–2; 23.8% ICAD vs 27.0% non-ICAD; p=0.82) or groin puncture to recanalization times (average 43.5 (range 8–181) min for ICAD vs 40.2 (4–204) min for non-ICAD; p=0.42). Patients with ICAD experienced a significantly higher number of passes (average 1.8 (range 1–7) passes for ICAD vs 1.6 (1–5) passes for non-ICAD; p=0.0059). Adjusting for age, ≥3 device passes, baseline National Institutes of Health Stroke Scale, rates of angioplasty only, rates of concurrent angioplasty and stenting, coronary artery disease and atrial fibrillation incidences, and time from emergency department arrival to recanalization, yielded no significant difference in rates of favorable outcomes between the two groups. Conclusion Patients who underwent MT with underlying ICAD had similar rates of favorable outcomes as those without, but required a higher number of device passes.
    Materialart: Online-Ressource
    ISSN: 1759-8478 , 1759-8486
    Sprache: Englisch
    Verlag: BMJ
    Publikationsdatum: 2022
    ZDB Id: 2506028-4
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  • 4
    In: Interventional Neurology, S. Karger AG, Vol. 8, No. 2-6 ( 2019), p. 116-122
    Kurzfassung: 〈 b 〉 〈 i 〉 Background: 〈 /i 〉 〈 /b 〉 Studies have shown a lack of agreement of computed tomography perfusion (CTP) in the selection of acute ischemic stroke (AIS) patients for endovascular treatment. 〈 b 〉 〈 i 〉 Purpose: 〈 /i 〉 〈 /b 〉 To demonstrate whether non-contrast computed tomography (CT) within 8 h of symptom onset is comparable to CTP imaging. 〈 b 〉 〈 i 〉 Methods: 〈 /i 〉 〈 /b 〉 Prospective study of consecutive anterior circulation AIS patients with a National Institute of Health Stroke Scale (NIHSS) score & #x3e; 7 presenting within 8 h of symptom onset with endovascular treatment. All patients had non-contrast CT, CT angiography, and CTP. The neuro-interventionalist was blinded to the results of the CTP and based the treatment decision using the Alberta Stroke Program Early CT score (ASPECTS). Baseline demographics, co-morbidities, and baseline NIHSS scores were collected. Outcomes were modified Rankin scale (mRS) score at discharge and in-hospital mortality. Good outcomes were defined as a mRS score of 0–2. 〈 b 〉 〈 i 〉 Results: 〈 /i 〉 〈 /b 〉 283 AIS patients were screened for the trial, and 119 were enrolled. The remaining patients were excluded for: posterior circulation stroke, no CTP performed, could not obtain consent, and NIHSS score & #x3c; 7. Mean ­NIHSS score at admission was 16.8 ± 3, and mean ASPECTS was 8.4 ± 1.4. There was no statistically significant correlation with CTP penumbra and good outcomes: 50 versus 47.8% with no penumbra present ( 〈 i 〉 p 〈 /i 〉 = 0.85). In patients without evidence of CTP penumbra, there was 22.5% mortality compared to 22.1% mortality in patients with a CTP penumbra. If ASPECTS ≥7, 64.6% had good outcome versus 13.3% if ASPECTS & #x3c; 7 ( 〈 i 〉 p 〈 /i 〉 & #x3c; 0.001). Patients with an ASPECTS ≥7 had 10% mortality versus 51.4% in patients with an ASPECTS & #x3c; 7 ( 〈 i 〉 p 〈 /i 〉 & #x3c; 0.001). 〈 b 〉 〈 i 〉 Conclusions: 〈 /i 〉 〈 /b 〉 CTP penumbra did not identify patients who would benefit from endovascular treatment when patients were selected with non-contrast CT ASPECTS ≥7. There is no correlation of CTP penumbra with good outcomes or mortality. Larger prospective trials are warranted to justify the use of CTP within 6 h of symptom onset.
    Materialart: Online-Ressource
    ISSN: 1664-9737 , 1664-5545
    Sprache: Englisch
    Verlag: S. Karger AG
    Publikationsdatum: 2019
    ZDB Id: 2662855-7
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  • 5
    In: Journal of Stroke, Korean Stroke Society, Vol. 25, No. 3 ( 2023-09-30), p. 378-387
    Kurzfassung: Background and Purpose Effect of endovascular therapy (EVT) in acute large vessel occlusion (LVO) patients with tandem lesions (TLs) within 6–24 hours after last known well (LKW) remains unclear. We evaluated the clinical and safety outcomes among TL-LVO patients treated within 6–24 hours.Methods This multicenter cohort was divided into two groups, based on LKW to puncture time: early window ( 〈 6 hours), and late window (6–24 hours). Primary clinical and safety outcomes were 90-day functional independence measured by the modified Rankin Scale (mRS: 0–2) and symptomatic intracranial hemorrhage (sICH). Secondary outcomes were successful reperfusion (modified Thrombolysis in Cerebral Infarction score ≥2b), first-pass effect, early neurological improvement, ordinal mRS, and in-hospital and 90-day mortality.Results Of 579 patients (median age 68, 32.1% females), 268 (46.3%) were treated in the late window and 311 (53.7%) in the early window. Late window group had lower median National Institutes of Health Stroke Scale score at admission, Alberta Stroke Program Early Computed Tomography Score, rates of intravenous thrombolysis, and higher rates for perfusion imaging. After adjusting for confounders, the odds of 90-day mRS 0–2 (47.7% vs. 45.0%, adjusted odds ratio [aOR] 0.71, 95% confidence interval [CI] 0.49–1.02), favorable shift in mRS (aOR 0.88, 95% CI 0.44–1.76), and sICH (3.7% vs. 5.2%, aOR 0.56, 95% CI 0.20–1.56) were similar in both groups. There was no difference in secondary outcomes. Increased time from LKW to puncture did not predicted the probability of 90-day mRS 0–2 (aOR 0.99, 95% CI 0.96–1.01, for each hour delay) among patients presenting 〈 24 hours.Conclusion EVT for acute TL-LVO treated within 6–24 hours after LKW was associated with similar rates of clinical and safety outcomes, compared to patients treated within 6 hours.
    Materialart: Online-Ressource
    ISSN: 2287-6391 , 2287-6405
    Sprache: Englisch
    Verlag: Korean Stroke Society
    Publikationsdatum: 2023
    ZDB Id: 2814366-8
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  • 6
    In: Annals of Neurology, Wiley, Vol. 93, No. 4 ( 2023-04), p. 793-804
    Kurzfassung: Reperfusion therapy is highly beneficial for ischemic stroke. Reduction in both infarct growth and edema are plausible mediators of clinical benefit with reperfusion. We aimed to quantify these mediators and their interrelationship. Methods In a pooled, patient‐level analysis of the EXTEND‐IA trials and SELECT study, we used a mediation analysis framework to quantify infarct growth and cerebral edema (midline shift) mediation effect on successful reperfusion (modified Treatment in Cerebral Ischemia ≥ 2b) association with functional outcome (modified Rankin Scale distribution). Furthermore, we evaluated an additional pathway to the original hypothesis, where infarct growth mediated successful reperfusion effect on midline shift. Results A total 542 of 665 (81.5%) eligible patients achieved successful reperfusion. Baseline clinical and imaging characteristics were largely similar between those achieving successful versus unsuccessful reperfusion. Median infarct growth was 12.3ml (interquartile range [IQR] = 1.8–48.4), and median midline shift was 0mm (IQR = 0–2.2). Of 249 (37%) demonstrating a midline shift of ≥1mm, median shift was 2.75mm (IQR = 1.89–4.21). Successful reperfusion was associated with reductions in both predefined mediators, infarct growth (β = −1.19, 95% confidence interval [CI] = −1.51 to −0.88, p   〈  0.001) and midline shift (adjusted odds ratio = 0.36, 95% CI = 0.23–0.57, p   〈  0.001). Successful reperfusion association with improved functional outcome (adjusted common odds ratio [acOR] = 2.68, 95% CI = 1.86–3.88, p   〈  0.001) became insignificant (acOR = 1.39, 95% CI = 0.95–2.04, p  = 0.094) when infarct growth and midline shift were added to the regression model. Infarct growth and midline shift explained 45% and 34% of successful reperfusion effect, respectively. Analysis considering an alternative hypothesis demonstrated consistent results. Interpretation In this mediation analysis from a pooled, patient‐level cohort, a significant proportion (~80%) of successful reperfusion effect on functional outcome was mediated through reduction in infarct growth and cerebral edema. Further studies are required to confirm our findings, detect additional mediators to explain successful reperfusion residual effect, and identify novel therapeutic targets to further enhance reperfusion benefits. ANN NEUROL 2023;93:793–804
    Materialart: Online-Ressource
    ISSN: 0364-5134 , 1531-8249
    URL: Issue
    Sprache: Englisch
    Verlag: Wiley
    Publikationsdatum: 2023
    ZDB Id: 2037912-2
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  • 7
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    Ovid Technologies (Wolters Kluwer Health) ; 2014
    In:  Neurosurgery Vol. 75, No. 4 ( 2014-10), p. 380-387
    In: Neurosurgery, Ovid Technologies (Wolters Kluwer Health), Vol. 75, No. 4 ( 2014-10), p. 380-387
    Materialart: Online-Ressource
    ISSN: 0148-396X
    RVK:
    Sprache: Englisch
    Verlag: Ovid Technologies (Wolters Kluwer Health)
    Publikationsdatum: 2014
    ZDB Id: 1491894-8
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  • 8
    In: Interventional Neuroradiology, SAGE Publications, Vol. 27, No. 2 ( 2021-04), p. 298-306
    Kurzfassung: The use of compliant dual lumen balloon microcatheters (CDLB) for the endovascular treatment of vascular malformations, wide neck aneurysms, and intracranial angioplasty (for vasospasm) is well documented. Navigation of 4 mm or larger CDLB within tortuous and small distal intracranial vessels can be challenging. Recently, the lower profile Scepter Mini balloon microcatheter (SMB) has been approved for use, with potential for improved intracranial navigation. Objective Discuss operative experience of Scepter Mini (Microvention, Aliso Viejo, CA). Methods We describe our initial experience with the SMB in a series of nine patients. Results The balloon microcatheter was used for delivery of liquid embolic in six patients (Case 1, 2, 6–9), adjunct support for delivery or positioning of the Woven Endobridge (WEB) device in two (Case 3,4), and gentle post-deployment repositioning of a WEB device in the last one (Case 5). We were able to successfully navigate the SMB over a 0.008 “micro wire to the target lesion in all the patients. We experienced initial difficulty with injecting liquid embolic in Case 2. We postulate that the SMB was in a tortuous segment of a dural vessel in this patient, and that it kinked on inflation with occlusion of the liquid embolic delivery lumen; this was overcome with slightly proximal repositioning and reinflation of the SMB. Conclusion Our initial experience shows that the SMB has potential to be useful in endovascular neurosurgical procedures requiring balloon assistance within smaller diameter blood vessels.
    Materialart: Online-Ressource
    ISSN: 1591-0199 , 2385-2011
    Sprache: Englisch
    Verlag: SAGE Publications
    Publikationsdatum: 2021
    ZDB Id: 2571161-1
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  • 9
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    Online-Ressource
    SAGE Publications ; 2022
    In:  Interventional Neuroradiology Vol. 28, No. 3 ( 2022-06), p. 277-282
    In: Interventional Neuroradiology, SAGE Publications, Vol. 28, No. 3 ( 2022-06), p. 277-282
    Kurzfassung: Remote tele-proctoring has been conducted in neuro-endovascular surgery, however, evidence to support its use in the fellowship training is limited. We demonstrate a novel augmented reality tele-proctoring platform to enable a remote attending to guide a fellow. Methods A consecutive series of neuro-endovascular cases were performed by a neuro-endovascular fellow with remote guidance from an attending surgeon. The fellow and attending were connected using a commercially available cloud-based platform designed to capture and stream up to four live video feeds from a clinical environment to a remote user. In this setting, two video streams were obtained directly from the anteroposterior and lateral cameras on the biplane. Additional video of the operator from a telescopic camera was streamed live to the remote attending surgeon. The attending could provide immediate vocal feedback and also deploy the platform's augmented reality tools to communicate with the fellow in the angiography suite. Results A total of 10 cases were performed on eight patients utilizing the cloud-based tele-proctoring platform to facilitate instruction. The series included diagnostic angiograms and interventions such as intracranial balloon angioplasty, carotid stenting, and intracranial stenting. All cases were a technical success. No complications or deaths occurred. When compared to similar cohort of 10 cases prior to these which utilized a traditional instruction paradigm; we saw no differences in contrast use ( p = 0.38), fluoroscopy time ( p = 0.85), or technical success. Conclusions This study demonstrates successful use of an augmented reality tele-proctoring platform to guide a neuro-endovascular fellow through complex neuro-interventional procedures from a remote setting.
    Materialart: Online-Ressource
    ISSN: 1591-0199 , 2385-2011
    Sprache: Englisch
    Verlag: SAGE Publications
    Publikationsdatum: 2022
    ZDB Id: 2571161-1
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  • 10
    In: Interventional Neuroradiology, SAGE Publications
    Kurzfassung: Angioplasty and stenting is a treatment option for patients with medically refractory symptomatic intracranial atherosclerotic disease (sICAD). Currently the Wingspan Stent System (WSS) is the only FDA approved device for this indication. We find the Resolute (R) Onyx Stent, a drug-eluting balloon mounted stent (DES), a better alternative to the WSS for treatment of sICAD. Herein, we present our findings comparing the two stents based on our single center experience. Methods A prospectively maintained neuro-endovascular databased was queried for patients between January 2013 to June 2021. Inclusion criteria for patients included sICAD with failed medical management, and intracranial stenting with either R-Onyx DES or WSS, including patients treated within 7 days of their last stroke. Primary outcomes were assessed via the occurrence of ischemic or hemorrhagic stroke or death within 72 h of the procedure. Secondary outcomes consisted of recurrent stroke or significant in-stent restenosis evaluated by a clinical or angiographic follow-up at 6 months. Results A total of 184 patients, average age 61.26 (SD = 12.53) (44% women), were eligible for analysis with 58 having R-onyx DES and 126 having WSS. Within 72 h, the primary outcome was observed in 1.7% (n = 1) of patients in the R-onyx DES group and 6.3% (n = 8) of patients in the WSS group (p = 0.089). Among 41 angiographic and clinical follow-ups in the R-onyx DES group, none had a recurrent stroke, while among 101 patients who had follow-up in the WSS group, 8.9% (n = 9) had a stroke (p = 0.024). At a 6-month angiographic follow-up, there was a significantly lower rate of symptomatic in-stent restenosis among the R-onyx DES group with 1.7% (n = 1) compared with 21.4% (n = 27) in the WSS group (p = 0.0003). Conclusion R-onyx DES is more effective than WSS in treating sICAD with low rates of periprocedural complications and long-term strokes and symptomatic in-stent restenosis. Future prospective randomized multicenter trials are needed.
    Materialart: Online-Ressource
    ISSN: 1591-0199 , 2385-2011
    Sprache: Englisch
    Verlag: SAGE Publications
    Publikationsdatum: 2022
    ZDB Id: 2571161-1
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