Mechanical Thrombectomy in Acute Stroke: Prospective Pilot Trial of the Solitaire FR Device while Under Conscious Sedation

Abstract Purpose Mechanical thrombectomy (MT) is the first-line treatment in acute stroke patients presenting with large vessel occlusion (LVO). The efficacy of intravenous thrombolysis (IVT) prior to MT is being contested. The objective of this study was to evaluate the efficacy of MT without IVT in patients with no contraindications to IVT presenting directly to a tertiary stroke center with acute anterior circulation LVO. Materials and Methods We collected the data of 106 acute stroke patients who underwent MT in a single high-volume stroke center. Patients with anterior circulation LVO eligible for IVT and directly admitted to our institution who subsequently underwent MT were included. We recorded baseline clinical, laboratory, procedural, and imaging variables and technical, imaging, and clinical outcomes. The effect of intravenous thrombolysis on 3-month clinical outcome (mRS) was analyzed with univariate tests and binary and ordinal logistic regression analysis. Results Fifty-eight out of the 106 patients received IVT + MT. These patients had 2.6-fold higher odds of poorer clinical outcome in mRS shift analysis (p = 0.01) compared to MT-only patients who had excellent 3-month clinical outcome (mRS 0–1) three times more often (p = 0.009). There were no significant differences between the groups in process times, mTICI, or number of hemorrhagic complications. A trend of less distal embolization and higher number of device passes was observed among the MT-only patients. Conclusions MT without prior IVT was associated with an improved overall three-month clinical outcome in acute anterior circulation LVO patients.

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E-139 Impact of balloon guide catheter catheterization on mechanical thrombectomy in acute stroke patients

10.1136/neurintsurg-2018-snis.215 ◽

2018 ◽

Author(s):

D Jeong ◽

D Kim

Keyword(s):

Acute Stroke ◽

Mechanical Thrombectomy ◽

Stroke Patients ◽

Guide Catheter

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Carotid Elongation Does Not Affect Angiographic Results of Mechanical Thrombectomy in Acute Stroke

Clinical Neuroradiology ◽

10.1007/s00062-014-0345-z ◽

2014 ◽

Vol 26 (2) ◽

pp. 183-187 ◽

Cited By ~ 3

Author(s):

Umut Yilmaz ◽

Ruben Mühl-Benninghaus ◽

Andreas Simgen ◽

Wolfgang Reith ◽

Heiko Körner

Keyword(s):

Acute Stroke ◽

Mechanical Thrombectomy

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Inadvertent Stent Retriever Detachment: A Multicenter Case Series and Review of Device Experience FDA Reports

Interventional Neurology ◽

10.1159/000441920 ◽

2015 ◽

Vol 4 (3-4) ◽

pp. 75-82 ◽

Cited By ~ 9

Author(s):

Hesham Masoud ◽

Thanh N. Nguyen ◽

Coleman O. Martin ◽

William E. Holloway ◽

Sudheer Ambekar ◽

...

Keyword(s):

First Generation ◽

Mechanical Thrombectomy ◽

Rare Complication ◽

Case Series ◽

Standard Of Care ◽

Stent Retriever ◽

Large Vessel Occlusion ◽

Vessel Occlusion ◽

The Us ◽

Solitaire Fr

Mechanical thrombectomy using retrievable stents or stent retriever devices has become the mainstay of intra-arterial therapy for acute ischemic stroke. The recent publication of a series of positive trials supporting intra-arterial therapy as standard of care for the treatment of large vessel occlusion will likely further increase stent retriever use. Rarely, premature stent detachment during thrombectomy may be encountered. In our multicenter case series, we found a rate of detachment of less than 1% (n = 7/1,067), and all were first-generation Solitaire FR devices. A review of the US Food and Drug Administration database of device experience yielded 90 individual adverse reports of detachment. There were 82, 1 and 7 detachments of Solitaire FR (first generation), Solitaire FR2 (second generation) and Trevo devices, respectively. We conclude with a brief overview of the technical and procedural considerations which may be helpful in avoiding this rare complication.

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Abstract P141: Global Impact of Covid-19 Pandemic on Acute Stroke and Mechanical Thrombectomy - An International Survey

Stroke ◽

10.1161/str.52.suppl_1.p141 ◽

2021 ◽

Vol 52 (Suppl_1) ◽

Author(s):

Dileep R Yavagal ◽

Vasu Saini ◽

Violiza Inoa ◽

Hannah E Gardener ◽

Sheila O Martins ◽

...

Keyword(s):

Acute Stroke ◽

Mechanical Thrombectomy ◽

High Volume ◽

Stroke Care ◽

Acute Stroke Care ◽

Treatment Practices ◽

Global Impact ◽

Significant Difference ◽

The World ◽

The Impact

Introduction: The COVID-19 pandemic has strained the healthcare systems across the world but its impact on acute stroke care is just being elucidated. We hypothesized a major global impact of COVID-19 not only on stroke volumes but also on thrombectomy practice. Methods: A 19-item questionnaire survey aimed to identify the changes in stroke volumes and treatment practices seen during COVID-19 pandemic was designed using Qualtrics software. It was sent to stroke and neuro-interventional physicians around the world who are part of the executive committee of a global coalition, Mission Thrombectomy 2020 (MT2020) between April 5 th to May 15 th , 2020. Results: There were 113 responses across 25 countries. Globally there was a median 33% decrease in stroke admissions and a 25% decrease in mechanical thrombectomy (MT) procedures during COVID-19 pandemic compared to immediately preceding months (Figure 1A-B). This overall median decrease was despite a median increase in stroke volume in 4 European countries which diverted all stroke patients to only a few selected centers during the pandemic. The intubation policy during the pandemic for patients undergoing MT was highly variable across participating centers: 44% preferred intubating all patients, including 25% centers that changed their policy to preferred-intubation (PI) vs 27% centers that switched to preferred-conscious-sedation (PCS). There was no significant difference in rate of COVID-19 infection between PI vs PCS (p=0.6) or if intubation policy was changed in either direction (p=1). Low-volume (<10 stroke/month) compared with high-volume stroke centers (>20 strokes/month) are less likely to have neurointerventional suite specific written personal protective equipment protocols (74% vs 88%) and if present, these centers are more likely to report them to be inadequate (58% vs 92%). Conclusion: Our data provides a comprehensive snapshot of the impact on acute stroke care observed worldwide during the pandemic.

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Impact of Repeated Clot Retrieval Attempts on Infarct Growth and Outcome After Ischemic Stroke

Neurology ◽

10.1212/wnl.0000000000012321 ◽

2021 ◽

pp. 10.1212/WNL.0000000000012321

Author(s):

Wagih Ben Hassen ◽

Caroline Touloupas ◽

Joseph Benzakoun ◽

Gregoire Boulouis ◽

Martin Bretzner ◽

...

Keyword(s):

Ischemic Stroke ◽

Acute Stroke ◽

Functional Outcome ◽

Mechanical Thrombectomy ◽

Binary Logistic Regression ◽

Unfavorable Outcome ◽

Binary Logistic Regression Analysis ◽

Strongly Correlated ◽

Vessel Occlusion

Objective:To determine whether the association between increasing number of clot retrieval attempts (CRA) and unfavorable outcome is due to an increase in emboli to new territory (ENT) and greater infarct growth (IG) in successfully recanalized patients with acute ischemic stroke due to large vessel occlusion (AIS LVO).Methods:Data were extracted from two pooled multicentric prospective registries of consecutive anterior AIS-LVO patients treated with mechanical thrombectomy (MT) between January 2016-2019. Patients with pretreatment and 24 hours post-treatment diffusion-weighted imaging (DWI) achieving successful recanalization, defined as expanded Thrombolysis in Cerebral Infarction Scale (eTICI) scores 2b, 2C or 3 were included. ENT were assessed and IG measured by voxel-based segmentation after DWI co-registration. Associations between number of CRA, ENT, IG and 3-month outcome were analyzed.Results:Four hundred nineteen patients achieving successful recanalization were included. ENT occurrence was strongly correlated with increasing CRA (ρ=0.73, p=10-4). In multivariable linear analysis, IG was independently associated with CRA (β=1.6 per retrieval attempt, 95% CI = [0.97–9.74], p=0.03) and ENT (β=2.7, [1.21-4.1], p=0.03). Unfavorable functional outcome (3-month modified Rankin Score >2) increased with each additional CRA. IG was an independent predictor of unfavorable outcome (OR=1.05 [1.02-1.07] per 1 mL IG increase, p=10-4) in binary logistic regression analysis.Conclusion:Increasing number of CRA in acute stroke is correlated with an increased ENT rate and increased IG volume, affecting functional outcome even when successful recanalization is achieved.Classification of evidence:This study provides Class II evidence that, for patients with acute stroke undergoing successful recanalization, an increasing number of clot retrieval attempts is associated with poorer functional outcome.

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Abstract 1122‐000067: Radial Versus Femoral Artery Access for Mechanical Thrombectomy Following IV tPA Administration

Stroke: Vascular and Interventional Neurology ◽

10.1161/svin.01.suppl_1.000067 ◽

2021 ◽

Vol 1 (S1) ◽

Author(s):

Joshua S Catapano ◽

Andrew Ducruet ◽

Felipe C Albuquerque ◽

Ashutosh Jadhav

Keyword(s):

Length Of Stay ◽

Acute Stroke ◽

Mechanical Thrombectomy ◽

Average Length ◽

Linear Regression Analysis ◽

Hospital Length ◽

Hospital Length Of Stay ◽

Access Site ◽

Femoral Access ◽

Iv Tpa

Introduction : The transradial artery (TRA) approach for neuroendovascular procedures has been demonstrated as a safe and effective alternative to the transfemoral artery (TFA) approach. The present study compares the efficiency and periprocedural outcomes of the TRA and TFA approach for acute stroke interventions in patients receiving intravenous alteplase. Methods : The study was designed as a retrospective analysis of patients who underwent acute mechanical thrombectomy at a large cerebrovascular center between January 2014 and March 2021. Intervention cohorts (TRA and TFA) were compared on baseline characteristics, periprocedural efficiency/efficacy, and in‐hospital outcomes. Results : A total of 314 patients underwent acute mechanical thrombectomy following IV tPA via TRA (6.7%, 21/314) or TFA (93.3%, 293/314) approach. The overall complication rate appeared higher in TFA (6.8%, 20/314) compared to TRA (4.8%,1/21) patients. Access site complications were present in 4.1%(12/293) of TFA patients and 0.0%(0/21) of TRA patients. The average length of stay (days ± standard deviation) was significantly greater in TFA (8.8 ± 8.5) vs. TRA (4.8 ± 2.9) patients (P = 0.02). Linear regression analysis found femoral access (p = 0.046), Medicaid (p = 0.004) insurance, and discharge NIHSS >10 (p = 0.045) as predictors of increased length of stay. However, when time to initial physical/occupation session was added to the model, access site was no longer significant. Conclusions : The TRA (vs. TFA) approach for acute stroke interventions following IV tPA administration may potentially reduce periprocedural complications and hospital length of stay. The reduction in length of stay with TRA access appears to be associated with earlier initiation of therapies.

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Arterial Vasospasm During Mechanical Thrombectomy for Acute Stroke

Journal of Neuroimaging ◽

10.1111/j.1552-6569.2008.00197.x ◽

2009 ◽

Vol 19 (1) ◽

pp. 61-64 ◽

Cited By ~ 11

Author(s):

Rishi Gupta

Keyword(s):

Acute Stroke ◽

Mechanical Thrombectomy ◽

Arterial Vasospasm

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Characterization of Subarachnoid Hyperdensities After Thrombectomy for Acute Stroke Using Dual-Energy CT

Neurology ◽

10.1212/wnl.0000000000013198 ◽

2021 ◽

pp. 10.1212/WNL.0000000000013198

Author(s):

Arturo Renú ◽

Carlos Laredo ◽

Alejandro Rodríguez-Vázquez ◽

Daniel Santana ◽

Mariano Werner ◽

...

Keyword(s):

Clinical Outcome ◽

Acute Stroke ◽

Mechanical Thrombectomy ◽

Dual Energy ◽

Common Finding ◽

Dual Energy Ct ◽

Consecutive Series ◽

Contrast Extravasation ◽

Logistic Regression Models ◽

Increased Risk

Background and Objectives:The presence of post-interventional subarachnoid hyperdensities (SA-HD) is a relatively common finding after mechanical thrombectomy (MT). We aimed to assess the incidence, characteristics, clinical relevance and predictors of SA-HD after MT as categorized through the use of post-interventional Dual Energy-CT (DE-CT).Methods:A single-center consecutive series of acute stroke patients treated with MT were retrospectively reviewed. Post-treatment SA-HD were defined as incident extra-axial hyperdensities in a follow-up DE-CT performed within a median of 8 hours after MT. SA-HD were further classified according to their content (isolated contrast extravasation versus blood extravasation) and extension [diffuse (hyperdensities in more than one extraparenchymal compartments) versus non-diffuse]. Adjusted logistic regression models assessed the association of SA-HD with pretreatment and procedural variables and with bad clinical outcome (shift towards worse categories in the ordinal Rankin Scale at 90 days).Results:SA-HD were observed in 120 (28%) of the 424 included patients (isolated contrast extravasation n=22, blood extravasation n=98). In this group, SA-HD were diffuse in 72 (60%) patients (isolated contrast extravasation n=7, blood extravasation n=65) and non-diffuse in 48 (40%) patients (isolated contrast extravasation n=15, blood extravasation n=33). Diffuse SA-HD were significantly associated with worse clinical outcome in adjusted models (cOR=2.3, 95%CI=1.36-4.00, p=0.002), unlike the specific SA-HD content alone. In contrast with the absence of SA-HD, only the diffuse pattern with blood extravasation was significantly associated with worse clinical outcome (cOR=2.4, 95%CI=1.36-4.15, p=0.002). Diffuse SA-HD patterns were predicted by M2 occlusions, more thrombectomy passes and concurrent parenchymal hematomas.Discussion:In our cohort of patients imaged within a median of 8 hours after MT, post-interventional SA-HD showed a diffuse pattern in 17% of thrombectomies and were associated with more arduous procedures. Diffuse SA-HD but not local collections of blood or contrast extravasations were associated with an increased risk of poor outcome and death. These findings reinforce the need for improvement in reperfusion strategies.Classification of Evidence:This study provides Class II evidence that in individuals with proximal carotid artery territory occlusions treated with mechanical thrombectomy, diffuse post-interventional subarachnoid hyperdensities on imaging 8 hours post-procedure are associated with worse clinical outcomes at 90 days.

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