Rate Of Good Functional Outcome Research Articles

Abstract 053: The Red 43 Intermediate Catheter For Aspiration Thrombectomy Of Distal Medium Vessel Occlusions (DMVOs): A Multicenter Experience.

Introduction Recent clinical research has increasingly supported the effectiveness and safety of mechanical thrombectomy (MT) for treating occlusions in distal medium‐sized vessels. This underscores the necessity for specialized MT devices capable of navigating the tortuous anatomy of distal cerebrovascular vessels. The recently introduced RED 43 aspiration catheter can be used as a primary catheter for distal aspiration in acute ischemic stroke. In this multicenter study, we share our collective experience using the RED 43 catheter as the primary aspiration device for thrombectomy of DMVOs. Methods We identified consecutive patients with DMVOs who underwent primary aspiration thrombectomy using the RED 43 catheter from four high‐volume comprehensive stroke centers. We collected baseline clinical data, angiographic and clinical outcomes, as well as procedural complications. Cases with large vessel occlusion that were treated according to the standard of care and subsequently developed a DMVO were labeled as secondary DMVOs. The primary outcomes were the rate of first pass effect (FPE), defined as a modified Thrombolysis in Cerebral Infarction (mTICI) score of 2c or 3 on the first pass, and the rates of successful recanalization, defined as mTICI ≥2b at the end of the procedure. We also obtained rates of good functional outcomes, symptomatic intracerebral hemorrhage (ICH), asymptomatic ICH, subarachnoid hemorrhage (SAH), and in‐hospital mortality. Results We identified 102 consecutive cases of DMVOs undergoing primary aspiration thrombectomy using the RED 43 catheter. The mean age was 70 (SD: 14) years. The medianNIHSS score was 9 (IQR 6‐14), and the median ASPECTS was 9 (IQR 8‐10). Among these, 79 cases were primary DMVOs, and 23 were secondary DMVOs. The primary occlusion locations where the RED 43 catheter was used were as follows: distal M2 MCA segment in 41 cases (40.2%), M3 MCA segment in 29 cases (28.4%), M4 MCA segment in 5 cases (4.9%), A1 ACA in 4 cases (3.9%), A2/A3 ACA in 12 cases (11.8%), and P1 PCA in 8 cases (7.8%). The rate of first pass effect (FPE) (mTICI 2c or 3 on the first pass) using the RED 43 aspiration catheter was 57% (45/79) for primary DMVOs and 61% (14/23) for secondary DMVOs. The rate of successful recanalization (mTICI ≥2b at the end of the procedure) was 83% (66/79) for primary DMVOs and 87% (20/23) for secondary DMVOs. A good functional outcome (mRS 0‐2 at 3 months) was observed in 57% of patients. One patient experienced symptomatic ICH, and two patients died during hospitalization. Asymptomatic ICH and asymptomatic SAH were observed in 5 patients (4.9%) and 7 patients (6.9%), respectively. Conclusion Our study demonstrates the safety and efficacy of the RED 43 catheter for aspiration thrombectomy of both primary and secondary DMVOs, with good rates of FPE and successful recanalization, and an excellent safety profile.

Thrombectomy Alone or Alongside Intravenous Thrombolysis in Managing Acute Ischemic Stroke Caused by Basilar Artery Occlusion: A Multicenter Observational Study.

It remains unclear whether the combination of endovascular treatment (EVT) with intravenous thrombolysis (IVT) results in a more favorable functional outcome than EVT alone in managing cases of acute ischemic stroke (AIS) caused by basilar artery occlusion (BAO). Thus, this study aimed to compare the outcomes of two approaches-direct EVT (DEVT) and bridging therapy (IVT plus EVT)-in acute BAO patients presenting within 4.5 hours of stroke onset. This multicenter retrospective cohort study included 153 acute BAO patients presenting within 4.5 hours of stroke onset. Of these patients, 65 (42.5%) and 88 (57.5%) underwent DEVT and bridging therapy, respectively. The primary outcome was defined as good functional outcome (modified Rankin Scale, 0-3) at 90 days. Additionally, pre-operative clinical features, thrombectomy attempts, successful reperfusion rates, incidences of symptomatic intracranial hemorrhage (sICH), and mortality were compared between the two groups. At 90 days, the rate of good functional outcome was comparable between the DEVT (44.6%) and bridging-therapy (39.8%) groups (adjusted odds ratio [aOR], 1.12; 95% confidence interval [CI], 0.55-2.31; p = 0.753). The bridging-therapy group exhibited a lower percentage of patients requiring ≥ 3 attempts of stent retrieval (aOR, 0.39; 95% CI, 0.16-0.93; p = 0.034). Pre-operative clinical features, rate of successful reperfusion, sICH, and mortality were similar between the two groups. In patients with BAO-induced AIS, DEVT demonstrates a comparable functional outcome to bridging therapy within 4.5 hours of symptom onset, but IVT reduces the number of thrombectomy attempts. AIS, acute ischemic stroke; LVO, large-vessel occlusion; EVT, endovascular treatment; IVT, intravenous thrombolysis; BAO, basilar artery occlusion; DEVT, direct endovascular treatment; sICH, symptomatic intracranial hemorrhage; RCT, randomized controlled trial; IRIS, Improving Reperfusion Strategies in Ischemic Stroke; TOAST, Trial of ORG 10172 in Acute Stroke Treatment; mTICI, modified thrombolysis in cerebral infarction; SD, standard deviation; IQR, interquartile range; ICAS, intracranial atherosclerotic stenosis.

Short- and long- term outcomes of mechanical thrombectomy in acute ischemic stroke patients with chronic kidney disease.

Chronic kidney disease (CKD) is a risk factor of acute ischemic stroke (AIS). Outcomes of treatment with mechanical thrombectomy (MT) in patients with CKD seem to be poorer than in the general population. Long‑term follow‑up studies are lacking. Our aim was to asses short- and long‑term outcomes (up to 365 days after stroke) in MT‑treated AIS patients with concomitant CKD. The study included all AIS patients treated with MT at the Comprehensive Stroke Center in Kraków, Poland, from 2019 to 2021. The patients were divided into the CKD group (best glomerular filtration rate [GFR] during hospitalization <60 ml/min/1.73 m2 or diagnosed CKD) and the controls. In‑hospital, 90‑day, and 365‑day mortality and rate of good functional outcomes (defined as modified Rankin Scale ≤2) were compared between the CKD patients and controls as well as between patients with CKD stages 1-3 (GFR ≥30 ml/min/1.73 m2) and 4-5 (GFR <30 ml/min/1.73 m2). Factors associated with the abovementioned outcomes were identified using univariable logistic regression analyses and then added to multivariable analyses. The CKD patients had higher 90- and 365‑day mortality and lower 90- and 365‑day good functional outcome rates than the controls. The patients with CKD stage 4-5 had significantly higher in‑hospital, 90‑day, and 365‑day mortality than the patients with CKD stage 1-3. Neither CKD nor its late stages (4-5) were independently associated with short- and long‑term mortality and functional outcomes of MT. MT outcomes in CKD patients are worse, especially in advanced stages of the disease, but CKD is not independently associated with poor prognosis. CKD alone should not be a contraindication for MT in otherwise eligible patients, although patients with impaired kidney function require more careful postprocedural monitoring.

Endovascular treatment in patients with acute ischemic stroke presenting beyond 6 h after symptom onset: An international multicenter cohort study of the EVA-TRISP collaboration.

After positive findings in clinical trials the time window for endovascular thrombectomy (EVT) for patients with an acute ischemic stroke has been expanded up to 24 h from symptom onset or last seen well (LSW). We aimed to compare EVT patients' characteristics and outcomes in the early versus extended time window and to compare outcomes with the DAWN and DEFUSE 3 trial results. Consecutive EVT patients from 16 mostly European comprehensive stroke centers from the EVA-TRISP cohort were included. We compared rates of 90-day good functional outcomes (Modified Rankin Scale 0-2), symptomatic intracranial hemorrhage (sICH), and 90-day mortality between patients treated in the early (<6 h after onset or LSW) versus extended (6-24 h after onset or LSW) time windows. We included 9313 patients, of which 6876 were treated in the early and 2437 in the extended time window. National Institutes of Health Stroke Scale (NIHSS) score at presentation was lower in patients treated in the extended time window (median 13 [IQR 7-18] vs 15 [IQR 9-19], p < 0.001). The percentage of patients with good functional outcome was slightly lower in the extended time window (37.4% vs 42.2%, p < 0.001). However, rates of successful recanalization, sICH, and mortality were similar. Good functional outcome rates after EVT were slightly lower for patients in the extended window in the EVA-TRISP cohort as compared to DAWN and DEFUSE 3. According to this large multicenter cohort study reflecting daily clinical practice, EVT use in the extended time window appears safe and effective.

Comparison of combined intravenous and intra-arterial thrombolysis with intravenous thrombolysis alone in stroke patients undergoing mechanical thrombectomy: a propensity-matched analysis

BackgroundA combination of intravenous (IVT) or intra-arterial (IAT) thrombolysis with mechanical thrombectomy (MT) for acute ischemic stroke due to large vessel occlusion (AIS-LVO) has been investigated. However, there is limited...

Safety and efficacy of flow redirection endoluminal device (FRED) for treatment of intracranial aneurysm; A systematic review and meta-analysis.

Previous research has shown promising results for treating intracranial aneurysms (IAs) with a flow redirection endoluminal device (FRED). In this systematic review and meta-analysis, we aimed to assess the safety and efficacy of this device by providing pooled estimates using the data from previous studies. A systematic literature search of Web of Sciences, PubMed, Scopus, and Embase was performed until October 8th, 2023. After selecting the final articles, relevant data were extracted. Parameters relating to safety and efficacy were pooled using STATA software. Heterogeneity was assessed using I-squared and Cochran's Q. Funnel plots and Egger's regression methods were used to evaluate publication bias. Sensitivity analysis was also performed using the leave-one-out method. The data of 37 studies were used for meta-analysis. The rates of immediate adequate occlusion and complete occlusion were 0.51 (95% CI: 0.31-0.71) and 0.34 (95% CI: 0.16-0.53), respectively, while the rates of the adequate and complete occlusion at the latest follow-up were 0.90 (95% CI: 0.84-0.94) and 0.75 (95% CI: 0.65-0.84), respectively. The periprocedural complications rate was 0.04 (95% CI: 0.03-0.06), and the overall complications rate was 0.12 (95% CI: 0.09-0.15). The rate of good functional outcome was 0.99 (95% CI: 0.99-1.00) and the successful implantation rate was 1.00 (95% CI: 1.00-1.00). There was substantial heterogeneity among the reports for most of the evaluated parameters. FRED had high safety and efficacy in treating IAs, as evidenced by its high occlusion and low complication rates.

Neurological outcomes for patients meeting radiographic criteria for DEFUSE 3 and SELECT2

BackgroundThe DEFUSE 3 and SELECT2 thrombectomy trials included some patients with similar radiographic profiles, although the rates of good functional outcomes differed widely between the studies.ObjectiveTo report neurological outcomes for...

Reperfusion therapies in patients with acute ischaemic stroke and atrial fibrillation: data on safety and effectiveness from a multi-centre cohort study.

Intravenous thrombolysis (IVT) and/or endovascular therapy (EVT) are currently considered best practices in acute stroke patients. Data regarding the efficacy and safety of reperfusion therapies in patients with atrial fibrillation (AF) are conflicting as regards haemorrhagic transformation, mortality, and functional outcome. This study sought to investigate for any differences, in terms of safety and effectiveness, between AF patients with acute ischaemic stroke (AIS) treated and untreated with reperfusion therapies. Data from two multicenter cohort studies (RAF and RAF-NOACs) on consecutive patients with AF and AIS were analyzed to compare patients treated and not treated with reperfusion therapies (IVT and/or EVT). Multivariable logistic regression analysis was performed to identify independent predictors for outcome events: 90-day good functional outcome and mortality. A propensity score matching (PSM) analysis compared treated and untreated patients. Overall, 441 (25.4%) were included in the reperfusion-treated group and 1,295 (74.6%) in the untreated group. The multivariable model suggested that reperfusion therapies were significantly associated with good functional outcome. Rates of mortality and disability were higher in patients not treated, especially in the case of higher NIHSS scores. In the PSM comparison, 173/250 patients (69.2%) who had received reperfusion therapies had good functional outcome at 90days, compared to 146/250 (58.4%) untreated patients (p = 0.009, OR: 1.60, 95% CI:1.11-2.31). Patients with AF and AIS treated with reperfusion therapies had a significantly higher rate of good functional outcome and lower rates of mortality compared to those patients with AF and AIS who had undergone conservative treatment.

Exploring the optimal lower blood pressure boundary during endovascular thrombectomy in patients with large vessel occlusion

BackgroundCurrent guidelines advocate for maintaining BP level below 180/105 mmHg during EVT, determining the safe lower boundary remains primarily consensus-driven by experts. This study aims to delve into the correlation between various targets of lower boundary for systolic and diastolic BP (SBP and DBP) during EVT and 3-month functional outcomes. MethodsA cohort study was conducted across two EVT-capable centers, enrolling patients with large artery occlusion undergoing EVT within 8 h of stroke onset. Mean BP values during EVT were meticulously recorded, and logistic regression models were utilized to evaluate the correlation between outcomes and diverse lower boundary targets for SBP and DBP. Additionally, logistic regression models investigated the relationship between periprocedural BP variability and subsequent outcomes. ResultsAmong the 201 patients included, having a SBP higher than 130 or 140 mmHg showed an independent association with increased good functional outcomes at 3 months (adjusted odds ratio, aOR 2.80, 95% Cis, 1.26–6.39 for 140 mmHg; aOR 2.34, 95% Cis, 1.03–5.56 for 130 mmHg). Additionally, an SBP exceeding 130 mmHg was correlated with decreased 3-month mortality (aOR, 0.24, 95% CI 0.07–0.74). No significant relationship was observed between DBP and functional outcomes. Patients with higher periprocedural SBP coefficient variance exhibited a decreased rate of good functional outcomes at 3 months (aOR, 0.42, 95% CI, 0.18–0.96). ConclusionsA SBP range above 130–140 mmHg could potentially serve as a safe lower boundary during EVT, while minimizing BP fluctuations may correlate with improved post-EVT functional outcomes.

Outcomes with General Anesthesia Compared to Conscious Sedation for Endovascular Treatment of Medium Vessel Occlusions: Results of an International Multicentric Study.

Optimal anesthetic strategy for the endovascular treatment of stroke is still under debate. Despite scarce data concerning anesthetic management for medium and distal vessel occlusions (MeVOs) some centers empirically support ageneral anesthesia (GA) strategy in these patients. We conducted an international retrospective study of MeVO cases. Apropensity score matching algorithm was used to mitigate potential differences across patients undergoing GA and conscious sedation (CS). Comparisons in clinical and safety outcomes were performed between the two study groups GA and CS. The favourable outcome was defined as amodified Rankin Scale (mRS) 0-2 at 90days. Safety outcomes were 90-days mortality and symptomatic intracranial hemorrhage (sICH). Predictors of afavourable outcome and sICH were evaluated with backward logistic regression. After propensity score matching 668 patients were included in the CS and 264 patients in the GA group. In the matched cohort, either strategy CS or GA resulted in similar rates of good functional outcomes (50.1% vs. 48.4%), and successful recanalization (89.4% vs. 90.2%). The GA group had higher rates of 90-day mortality (22.6% vs. 16.5%, p < 0.041) and sICH (4.2% vs. 0.9%, p = 0.001) compared to the CS group. Backward logistic regression did not identify GA vs CS as apredictor of good functional outcome (OR for GA vs CS = 0.95 (0.67-1.35)), but GA remained asignificant predictor of sICH (OR = 5.32, 95% CI 1.92-14.72). Anaesthetic strategy in MeVOs does not influence favorable outcomes or final successful recanalization rates, however, GA may be associated with an increased risk of sICH and mortality.

Keeping prior anticoagulation treatment in the acute phase of ischaemic stroke: the REKOALA study

IntroductionA consensus on the management of anticoagulated patients in the acute phase of ischaemic stroke has not yet been established. We aimed to evaluate clinical outcomes in such patients based on the continuation or discontinuation of anticoagulation.MethodsRetrospective study of patients with acute ischaemic stroke and cardioembolic source receiving anticoagulant therapy is done. Patients were classified based on the continuation or discontinuation of anticoagulation at admission. Clinical outcomes, haemorrhagic and ischaemic events were assessed. Multivariate logistic regression analysis, propensity score matching (PSM) analysis and a sub-analysis of patients with severe ischaemic stroke at admission (NIHSS score ≥ 15) were performed.ResultsAnticoagulation was continued in 147 (78.8%) of 186 patients. Patients continuing anticoagulant had lower NIHSS (median 5 vs 18, p < 0.001). There were no differences in haemorrhagic or ischaemic events. In the multivariate analysis, good functional outcome at discharge was higher in the continuation group, OR (CI95%) 3.77 (1.2–11.2). PSM analysis adjusted for potential confounders such as NIHSS had higher rates of good functional outcomes at discharge (80% vs 36%, p = 0.004) and at 90 days (76% vs 44%, p = 0.042) in the continuation group. Patients with severe stroke in this group had lower 90-day mortality (34.6% vs 62.5%, p = 0.045) and higher rates of good clinical outcome at discharge (33.3% vs 8.3%, p = 0.032). No differences were observed in 90-day haemorrhagic or ischaemic events.ConclusionContinuation of anticoagulation in patients with acute ischaemic stroke and cardioembolic source did not increase the risk of intracranial haemorrhage and may be associated with better functional outcomes.

214 Technical and Clinical Outcomes in Patients With Short-term Repeated Mechanical Thrombectomy: An International Multicenter Study

INTRODUCTION: Endovascular thrombectomy (EVT) remains the standard of care for acute large vessel occlusion (LVO) stroke. However, the safety and efficacy of repeat EVT (rEVT) in recurrent LVO remains unclear. METHODS: Data were included from the Stroke Thrombectomy and Aneurysm Registry (STAR) with 21 stroke centers for EVT performed to treat LVO stroke from 2013-2022. Patients undergoing single or rEVT within 30 days were included. Propensity score matching was used to compare patients undergoing single versus rEVT. The primary outcome was the modified Rankin score(mRS) at 90 days, and secondary outcomes were successful recanalization, postprocedural hemorrhage and mortality. RESULTS: Out of a total of 7387 patients who underwent EVT for LVO stroke, 90(1.2%) patients underwent rEVT for the same vascular territory within 30 days. The average time to re-occlusion was 5.3±7.3 days, and 41(45.6%) patients required rEVT within 24hrs. Patients undergoing rEVT had comparable rate of good functional outcome and mortality rate, but with but higher rate of symptomatic intracranial hemorrhage compared to a matched cohort of patients undergoing single procedure. There was a significant reduction in NIHSS before rEVT and at discharge (ΔNIHSS=(-)5 ± 1; p = 0.006). The rate of successful recanalization was similar in single and rEVT groups (78% versus 80%, p = 0.78) and between index and rEVT performed on the same patients (79% versus 80%; p = 0.78). CONCLUSIONS: Short-term rEVT is associated with comparable functional outcomes but with higher rate of hemorrhagic conversion compared to patients undergoing single EVT.

Impact of Sex on Thrombectomy Outcomes in Ischemic Stroke: A Propensity Score‐Matched Study, Systematic Review, and Meta‐Analysis

Background Women are underrepresented in stroke thrombectomy trials, and the impact of sex differences in outcomes after stroke thrombectomy is unclear. We performed a multicenter propensity matching study to define sex‐related differences in outcome after endovascular thrombectomy and integrated results in a meta‐analysis. Methods We included patients with anterior circulation large vessel occlusion consecutively treated with thrombectomy at 2 Comprehensive Stroke Centres (2016–2023). Selection criteria reflected international guidelines. Through systematic review we selected all studies reporting endovascular thrombectomy outcomes in anterior circulation large vessel occlusion stroke, applying propensity score matching. MEDLINE, EMBASE, and Cochrane CENTRAL were searched up to August 15, 2023 according to predefined protocol (OSF.io/je3da). Data were extracted by 2 independent raters, pooled estimates calculated according to random‐effect modeling meta‐analysis and reported as odds ratio (OR) and standard 95% CI. Outcomes were good functional outcome, defined as modified Rankin Scale score 0–2 at 90 days after stroke, and symptomatic intracranial hemorrhage, adjudicated according to European Cooperative Acute Stroke Study II criteria. Results After matching, 698 patients (349 women versus 349 men) had similar cardiovascular risk factors, baseline features, and treatment approach. No significant differences were found for good functional outcome (OR = 0.89, 95% CI = 0.66–1.2) and symptomatic intracranial hemorrhage (OR = 1.00, 95% CI = 0.44–2.26) in the cohort study by sex. Systematic review identified 3 studies (n = 3706), all of high quality. No differences emerged in rates of good functional outcome (OR = 1.00, 95% CI = 0.79–1.21) or symptomatic intracranial hemorrhage (OR = 0.85, 95% CI = 0.60–1.19) depending on sex. Conclusion Women receiving endovascular thrombectomy for anterior circulation large vessel occlusion related stroke have similar rates of good functional outcome and symptomatic intracranial hemorrhage compared to men.

Abstract WP179: Clinical Outcomes in Acute Stroke in Patients Undergoing Emergency Intracranial Stenting Receiving IV Thrombolysis

Background: Stent-retriever thrombectomy is the first-line therapy for acute stroke with intracranial large vessel occlusion. In cases of stent-retriever thrombectomy failure, rescue stent angioplasty might be the sole option for achieving permanent recanalization. This study aims to evaluate the safety of combined intracranial vessel stent placement and thrombolysis. Methods: We conducted a retrospective analysis of patients with large vessel occlusion who underwent rescue stent angioplasty after stent-retriever thrombectomy between 2012 and 2023 in 8 neurovascular centers. We defined two binary outcomes: (1) functional clinical outcome (modified Rankin Scale 0-2) and (2) early symptomatic intracerebral hemorrhage (sICH). Clinical outcomes were assessed using uni- and multivariable logistic regression models. Results: A total of 216 patients were included, with target vessels located within the anterior circulation (133; 63.4%) and posterior circulation (79; 36.6%). Among patients who underwent emergency intracranial stenting, 66 (30.6%) received intravenous thrombolytic treatment. In multivariate logistic regression analysis, adjusted for age, gender, baseline NIHSS, target vessel, time to recanalization, number of passes including, and type of antiplatelet therapy, intravenous thrombolytic therapy was not associated with symptomatic ICH (odds ratio (OR) 1.05, 95% confidence interval (CI) 0.27-4.14, p=0.9502), but it was associated with a functional clinical outcome at 90 days (OR 3.39, 95% CI 1.11-10.43, p=0.0325). Conclusions: The use of rescue stent angioplasty can be considered after unsuccessful stent-retriever thrombectomy, along with intravenous thrombolytic therapy. Patients receiving intravenous thrombolytic therapy before the procedure exhibited higher rates of good functional outcomes.

Abstract TP197: Impact of First-Pass Effect on Clinical Outcomes in Stroke Patients With Low Aspects

Introduction: The first-pass effect (FPE), defined as a complete or near-complete recanalization after a single pass of a mechanical thrombectomy (MT) device, has been linked to favorable clinical outcomes. However, its effectiveness in acute ischemic stroke (AIS) patients with low ASPECTS (Alberta Stroke Program Early CT Score 2-5) has not been validated. Method: We utilized data from STAR, a multicenter database of 84 centers worldwide, to conduct a retrospective, cohort study on patients who underwent MT for internal carotid artery (ICA) or M1 occlusion presenting with ASPECTS 2-5. We compared the outcomes of patients who achieved FPE (successful recanalization with an mTICI score of 2c or higher in one pass) to those who did not. The primary outcome was a 90-day favorable outcome, defined as mRS 0-3. Secondary outcomes included any intracranial hemorrhage (ICH), symptomatic ICH (sICH), and 90-day mortality. Results: Out of 10,229 patients in the STAR database, 250 patients met our inclusion criteria. Among those, 60 (24%) achieved FPE. There were no significant differences between the two groups in baseline, imaging, and procedural characteristics. FPE was significantly associated with higher odds of 90-day mRS 0-3 (adjusted odds ratio (aOR): 2.17, 95% confidence interval (CI): 1.04 - 4.20; P-value: 0.04) and lower rates of ICH (OR: 0.49, 95% CI: 0.25 - 0.93, P-value: 0.03). However, there was no significant difference in sICH rates (OR: 0.84, 95% CI: 0.31 - 2.04, P-value: 0.70). Conclusion: Achieving FPE in AIS stroke patients with low ASPECTS was associated with significantly higher rates of good functional outcomes and lower rates of ICH.

The impact of postoperative aspirin in patients undergoing Woven EndoBridge: a multicenter, institutional, propensity score-matched analysis

BackgroundThe Woven EndoBridge (WEB) device is frequently used for the treatment of intracranial aneurysms. Postoperative management, including the use of aspirin, varies among clinicians and institutions, but its impact on...

Repeat thrombectomy after large vessel re-occlusion: a propensity score matched analysis of technical and clinical outcomes

BackgroundEndovascular thrombectomy (EVT) remains the standard of care for acute large vessel occlusion (LVO) stroke. However, the safety and efficacy of repeat thrombectomy (rEVT) in recurrent LVO remains unclear. This...

Mechanical Thrombectomy for In-Hospital Onset Stroke: A Comparative Systematic Review and Meta-Analysis.

In-hospital onset stroke (IHOS) accounts for a significant proportion of large vessel occlusion acute ischemic strokes, leading to worse outcomes due to delays in evaluation and treatment. Limited data is available on the effectiveness of mechanical thrombectomy in IHOS patients. This study aims to assess the safety and efficacy of mechanical thrombectomy for patients with IHOS and compare the outcomes with those of community-onset strokes (COS). We conducted a systematic review and meta-analysis following established guidelines, by searching PubMed, Scopus, Web of Science, and Embase databases up to April 11, 2023. Eligible studies reporting outcomes of interest were included, and relevant data was extracted and analyzed using Stata software version 17.0. In a meta-analysis of nine studies, comprising 540 cases of IHOS and 5,744 cases of COS, IHOS cases had a significantly lower rate of good functional outcomes on follow-up (35.46% vs. 40.74%, P<0.01) and a higher follow-up mortality rate (26.29% vs. 18.08%, P<0.01) compared to COS patients. Both groups had comparable successful recanalization rates (IHOS: 79.32% vs. COS: 81.44%, P=0.11), incidence rates of periprocedural complications (IHOS: 15.10%, COS: 12.96%, P=0.78), and symptomatic intracranial hemorrhage (IHOS: 6.24%, COS: 6.88%, P=0.67). It is worth noting that much of the observed effect size for mortality and good functional outcomes on follow-up was derived from only one and two studies, respectively. While the current literature suggests that mechanical thrombectomy is a safe and effective treatment for IHOS, further research is necessary to comprehensively evaluate its impact, particularly during follow-up.

Mechanical thrombectomy in very elderly people: shortand long-term outcomes of endovascular stroke treatment in nonagenarians.

To assess outcomes of mechanical thrombectomy (MT) in nonagenarians suffering from acute ischaemic stroke (AIS) in a 1-year follow-up. Age is a factor associated with both the occurrence of AIS and a poorer prognosis. As the population ages, the prevalence of AIS among the very old (90 and older) is expected to rise. Data on long-term outcomes of MT, being the optimal treatment of AIS caused by large vessel occlusions, is scarce in the population of nonagenarians. We analysed all AIS patients treated with MT in a single Comprehensive Stroke Centre. We compared two subgroups: nonagenarians (people aged 90-99) and controls ( < 90 years) in terms of cardiovascular risk factors profile, stroke severity, treatment course, presence of in-hospital complications, and outcomes (mortality and good functional outcome defined as modified Rankin Scale ≤ 2) at discharge and at 90- and 365-day follow-ups. Nonagenarians were more commonly female and suffering from atrial fibrillation. They more often developed urinary tract infection during hospitalisation. Stroke severity, treatment course and in-hospital outcomes were comparable between the groups. Nonagenarians had non-significantly higher 90-day and 365-day mortality, and a significantly lower rate of good functional outcomes after 90 days (25.0% vs 57.7%, p = 0.011) and 365 days (31.5% vs 61.0%, p = 0.020). Despite worse outcomes than in younger patients, 25% of nonagenarians were functionally independent three months after MT, and almost one in three of them were so a year after the procedure, thereby showing the benefits of the treatment in this group.

Abstract 011: Endovascular therapy for acute ischemic stroke utilizing SOFia Aspiration System as first line Technique (SOFAST)

Introduction Mechanical thrombectomy using stent retrievers and aspiration techniques has emerged as the standard of care for patients with acute ischemic stroke (AIS) secondary to emergent large vessel occlusion (LVO). This study intended to collect real‐world clinical evidence on the safety and effectiveness of endovascular treatment of AIS using the SOFIA Flow Plus 6F aspiration catheter. The primary endpoint was the proportion of subjects achieving mTICI ≥2b. Secondary endpoints included good functional outcomes (mRS 0‐2) at Day 90, revascularization time, first line and first pass mTICI ≥2b, occurrence of procedure‐related SAEs, vasospasm involving the accessed vascular tree, embolization to new territories (ENTs), symptomatic intracerebral hemorrhage (sICH) within 24 hours and mortality at Day 90. Methods SOFAST was a prospective, multicenter, single‐arm, observational post‐market study. The enrolled subjects were ≥21 and ≤85 years with large vessel (ICA or MCA) proximal occlusion, pre‐morbid mRS ≤1, baseline NIHSS ≥5, and for whom groin puncture was within 8 hours of symptom onset. A total of 108 patients were enrolled and treated using aspiration thrombectomy with SOFIA 6F as the first line treatment device. Patients were followed at 24 hours, 7 days/discharge, and 90 days post‐procedure. Cerebral angiography was performed pre‐ and post‐procedure. Clinical assessments included the NIHSS and mRS scales. All neurological, device‐related, and procedure‐related AEs and deaths were adjudicated by independent medical reviewers. Angiographic and other imaging data was adjudicated by an independent core laboratory. Results A total of 108 subjects were enrolled (mean age 62.7 years, 50% men) with a median NIHSS of 15.5. Of 108 subjects, 97.2% (105/108), 85.2% (92/108) and 55.6% (60/108) achieved mTICI ≥2b, ≥2c and =3 revascularization, respectively. With first line aspiration using SOFIA 6F, 87.0%, 79.6% and 52.8% achieved mTICI ≥2b, ≥2c and =3 revascularization, respectively. Median number of passes was one (range 1‐3). First pass rate of mTICI 2c or 3 using SOFIA 6F was 70.4%, of which 50.9% patients achieved mTICI score of 3. Mean duration from groin puncture to initial clot contact was 13.0 min and to successful revascularization was 17.9 min. Good functional outcome was achieved in 66.7% (72/108) of subjects at Day 90 (mRS 0‐2), procedure‐related SAEs occurred in 2.8% (3/108) of subjects and sICH in 0.9% (1/108) of subjects within 24 hours. Procedural vasospasm was recorded in in 9.3% (10/108) of subjects, and mortality in 7.4% (8/108) subjects at Day 90 (none related to the study device). No ENTs occurred. Conclusion In SOFAST study, mTICI ≥2b revascularization was achieved in the majority of patients at the end of all procedures (97.2%) and with first line treatment (87.0%) with a large fraction of these subjects achieving mTICI ≥2c following the first SOFIA 6F pass (70.4%). Durations from groin puncture to clot contact and successful revascularization were relatively short. The study presented high rates of good functional outcome at Day 90 and low rates of safety events. In summary, the study provides encouraging evidence of the safety and effectiveness of the SOFIA 6F device for aspiration thrombectomy in acute ischemic stroke subjects.