Abstract P488: The Impact of First Pass Effect on Acute Ischemic Stroke Clinical Outcomes: Why We Need to Continue to Improve Mechanical Thrombectomy?

Stroke ◽  
2021 ◽  
Vol 52 (Suppl_1) ◽  
Author(s):  
Ameer E Hassan ◽  
Mahmoud Dibas ◽  
Amr Ehab El-Qushayri ◽  
Sherief Ghozy ◽  
Adam A Dmytriw ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Clinical Outcomes ◽  
Mechanical Thrombectomy ◽  
Functional Independence ◽  
Vessel Occlusion ◽  
First Pass Effect ◽  
Improved Outcomes ◽  
First Pass ◽  
The Impact

Background: Mechanical thrombectomy (MT) has significantly improved outcomes of acute ischemic stroke (AIS) patients due to large vessel occlusion (LVO). The first-pass effect (FPE), defined as achieving complete reperfusion (mTICI3/2c) with a single pass, was reported to be associated with higher functional independence rates following EVT and has been emphasized as an important procedural target. We compared MT outcomes in patients who achieved FPE to those who did not in a real world large database. Method: A retrospective analysis of LVO pts who underwent MT from a single center prospectively collected database. Patients were stratified into those who achieved FPE and non-FPE. The primary outcome (discharge and 90 day mRS 0-2) and safety (sICH, mortality and neuro-worsening) were compared between the two groups. Results: Of 580 pts, 261 (45%) achieved FPE and 319 (55%) were non-FPE. Mean age was (70 vs 71, p=0.051) and mean initial NIHSS (16 vs 17, p=0.23) and IV tPA rates (37% bs 36%, p=0.9) were similar between the two groups. Other baseline characteristics were similar. Non-FPE pts required more stenting (15% vs 25%, p=0.003), and angioplasty (19% vs 29%, p=0.01). The FPE group had significantly more instances of discharge (33% vs 17%, p<0.001), and 90-day mRS score 0-2 (29% vs 20%, p<0.001), respectively. Additionally, the FPE group had a significant lower mean discharge NIHSS score (12 vs 17, p<0.001). FPE group had better safety outcomes with lower mortality (14.2% vs 21.6%, p=0.03), sICH (5.7% vs 13.5, p=0.004), and neurological worsening (71.3% vs 78.4%, p=0.02), compared to the non-FPE group. Conclusion: Patients with first pass complete or near complete reperfusion with MT had higher functional independence rates, reduced mortality, symptomatic hemorrhage and neurological worsening. Improvement in MT devices and techniques is vital to increase first pass effect and improve clinical outcomes.

Abstract WP25: The Impact of Body Mass Index on Outcomes of Mechanical Thrombectomy for Acute Ischemic Stroke

Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Stephanie Chen ◽  
David McCarthy ◽  
Vasu Saini ◽  
Marie Brunet ◽  
Eric Peterson ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Body Mass ◽  
Linear Correlation ◽  
Mechanical Thrombectomy ◽  
Functional Independence ◽  
Normal Weight ◽  
Vessel Occlusion ◽  
The Impact

Background: Obesity is an established risk factor for acute ischemic stroke (AIS), but its impact on clinical outcomes and mortality after AIS remains controversial. In this study, we evaluate the association of body mass index (BMI) on outcomes after mechanical thrombectomy (MT) for large vessel occlusion acute ischemic stroke (LVOS). Methods: We reviewed our prospective MT database for LVOS between 2015 and 2018. BMI was analyzed as a continuous and categorical variable with underweight BMI <18.5, normal BMI 18.5-24.9, overweight BMI 25-29.9, and obese BMI>30. Multivariate analysis was used to determine predictors of outcome. Results: 335 patients underwent MT with 7 (2.1%) patients classified as underweight, 107 (31.9%) normal, 141 (42.1%) overweight, and 80 (23.9%) obese. Compared to normal weight (reference), obese patients had higher rates of hypertension and hyperlipidemia, while underweight patients had higher rates of previous stroke and presentation NIHSS. The time from symptom onset to puncture, procedural techniques, and reperfusion success (>TICI 2b) was not significantly different between BMI categories. There was a significant inverse linear correlation between BMI and symptomatic hemorrhagic. In patients with successful reperfusion (>TICI 2b), there was also a significant bell-shaped relationship between BMI and functional independence (mRS < 3) with both low and high BMIs associated with worse outcomes. In patients without post-procedural symptomatic hemorrhage, there was a significant linear correlation between BMI and inpatient mortality. Conclusion: In LVOS patients treated with MT, BMI is inversely related with post-procedural symptomatic hemorrhage. Yet in those whom reperfusion is achieved, both lower and higher than normal BMI were associated with worse functional outcomes. Thus, the obesity paradox does not appear to pertain to mechanical thrombectomy, although larger prospective studies are necessary.

scholarly journals Cerebral vessel anatomy as a predictor of first-pass effect in mechanical thrombectomy for emergent large-vessel occlusion

2020 ◽  
pp. 1-9 ◽  
Author(s):  
Shaarada Srivatsa ◽  
Yifei Duan ◽  
John P. Sheppard ◽  
Shivani Pahwa ◽  
Jonathan Pace ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Mechanical Thrombectomy ◽  
Vessel Diameter ◽  
Large Vessel ◽  
Large Vessel Occlusion ◽  
Vessel Occlusion ◽  
First Pass Effect ◽  
First Pass ◽  
Anatomical Parameters

OBJECTIVEMechanical thrombectomy is effective in acute ischemic stroke secondary to emergent large-vessel occlusion, but optimal efficacy is contingent on fast and complete recanalization. First-pass recanalization does not occur in the majority of patients. The authors undertook this study to determine if anatomical parameters of the intracranial vessels impact the likelihood of first-pass complete recanalization.METHODSThe authors retrospectively evaluated data obtained in 230 patients who underwent mechanical thrombectomy for acute ischemic stroke secondary to large-vessel occlusion at their institution from 2016 to 2018. Eighty-six patients were identified as having pure M1 occlusions, and 76 were included in the final analysis. The authors recorded and measured clinical and anatomical parameters and evaluated their relationships to the first-pass effect.RESULTSThe first-pass effect was achieved in 46% of the patients. When a single device was employed, aspiration thrombectomy was more effective than stent retriever thrombectomy. A larger M1 diameter (p = 0.001), decreased vessel diameter tapering between the petrous segment of the internal carotid artery (ICA) and M1 (p < 0.001), and distal collateral grading (p = 0.044) were associated with first-pass recanalization. LASSO (least absolute shrinkage and selection operator) was used to generate a predictive model for recanalization using anatomical variables.CONCLUSIONSThe authors demonstrated that a larger M1 vessel diameter, low rate of vessel diameter tapering along the course of the intracranial ICA, and distal collateral status are associated with first-pass recanalization for patients with M1 occlusions.

scholarly journals Frontline ADAPT therapy to treat patients with symptomatic M2 and M3 occlusions in acute ischemic stroke: initial experience with the Penumbra ACE and 3MAX reperfusion system

2017 ◽  
Vol 10 (5) ◽  
pp. 434-439 ◽  
Author(s):  
Jens Altenbernd ◽  
Oliver Kuhnt ◽  
Svenja Hennigs ◽  
Ruediger Hilker ◽  
Christian Loehr
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Mechanical Thrombectomy ◽  
Functional Independence ◽  
National Institutes Of Health ◽  
Complication Rates ◽  
Vessel Occlusion ◽  
First Pass ◽  
Symptomatic Intracranial Hemorrhage ◽  
Distal Vessel

BackgroundAfter a series of positive studies for mechanical thrombectomy in large vessel occlusion acute ischemic stroke, the question remains, can symptomatic patients with distal vessel occlusion benefit from mechanical thrombectomy?PurposeTo assess the safety and efficacy of the 3MAX reperfusion system as frontline therapy for M2 and M3 occlusions.MethodsThis study retrospectively collected data on 58 patients treated for M2 and M3 occlusions between January and September 2016. Of these 58 patients, 31 had an isolated M2 or M3 occlusion. Eligible patients were treated with 3MAX by adirect first pass aspiration (ADAPT) technique within 6 hours following stroke onset. Effectiveness was defined by functional independence (90-day modified Rankin Scale core 0–2) and revascularization to modified Thrombolysis in Cerebral Infarction (mTICI) 2b–3 scores adjudicated by a core laboratory, while complication rates were used to determine safety of the device and the procedure.ResultsPatients with an isolated M2 or M3 occlusion had a mean age of 68.6±13.3 years (range 18–90 years), a median National Institutes of Health Stroke Score of 15 (IQR 9–19), and ASPECTS score of 9 (IQR 8–10). After intervention, 100% (31/31) of patients were revascularized to mTICI 2b–3; 77.4% (24/31) of patients showed revascularization to mTICI 3. Aspiration alone led to revascularization in 83.9% (26/31) of patients. At 90 days, 96.8% (30/31) of patients had achieved functional independence. The incidence of symptomatic intracranial hemorrhage was 0% (0/31).ConclusionsResults suggest that the 3MAX reperfusion system is safe and effective in achieving successful revascularization and functional independence for patients with acute ischemic stroke secondary to M2 and M3 occlusions using ADAPT, either as frontline monotherapy, or in combination with adjunctive devices.

Abstract TP5: Optimizing First Pass TICI 3: FAST (Flow Arrest Aspiration Stentriever Technique)

Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Carmen Parra-Farinas ◽  
Jose Danilo Diestro ◽  
Noora Almusalam ◽  
Rebecca Phillips ◽  
Abdullah Alqabbani ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Mechanical Thrombectomy ◽  
Functional Independence ◽  
First Pass ◽  
Procedural Time ◽  
The Impact ◽  
Combined Technique ◽  
Guiding Catheter ◽  
Reperfusion Rate

Introduction: Timely restoration of cerebral blood flow using mechanical thrombectomy for acute ischemic stroke is constantly evolving. We evaluated the impact of combining distal access catheter with proximal balloon guiding catheter and stentriever technique for mechanical thrombectomy in acute ischemic stroke patients. Methods: In accordance with our institutional review board approval, we retrospectively analyzed all the patients who underwent mechanical thrombectomy with stentriever between May 2011 and June 2019. The patients were divided by the techniques adopted, the combined technique: proximal balloon guiding catheter, distal access catheter and stentriever and the conventional approach: proximal balloon guiding catheter and stentriever. Analysis and outcome parameters: complete recanalization (TICI ≥2b), procedural time, early independent functional outcome (mRS ≤2 at discharge). Results: Among the 267 patients included, in 58.8% the combined technique was performed. Mean age at treatment was 68.4±13.3, 55.4% male. There were no statistically significant differences in baseline characteristics between the treatment groups. Median NIHSS score was 16 (6-34) on arrival. The overall complete recanalization rate was 68.5%. The combined technique group achieved higher complete recanalization rate; TICI ≥2b: 75.6% vs. 66.3% (p=0.001). In addition, the distal access catheter group achieved lower non-reperfusion rate; TICI=0: 15.4% vs. 26.5% (p=0.001). No significant differences were observed in first-pass successful reperfusion rate: 70.5% vs. 64.2% (p=0.333). The distal aspiration approach was not associated with longer procedural time: 67.4±28.4 min vs. 31.8±74.9 min (p=0.467). There were no significant differences regarding procedural complications: 8.3% vs. 7.3% (p=0.763); SICH: 8.5% vs. 12.2% (p=0.333). There were no significant differences in clinical outcomes; early functional independence rate: 45.0% vs. 54.3% (p=0.256), mortality rate: 12.8% vs. 15.2% (p=0.256). Conclusions: The combined techniquefor mechanical thrombectomy is associated with higher complete recanalization rate. The use of aspiration system does not seem to increase the procedural time or influence in complications development.

Thrombectomy for acute ischemic stroke in nonagenarians compared with octogenarians

2019 ◽  
Vol 12 (3) ◽  
pp. 266-270 ◽  
Author(s):  
Eric S Sussman ◽  
Blake Martin ◽  
Michael Mlynash ◽  
Michael P Marks ◽  
David Marcellus ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Functional Independence ◽  
Inclusion Criteria ◽  
Related Factors ◽  
Vessel Occlusion ◽  
Endovascular Thrombectomy ◽  
Improved Outcomes ◽  
Symptomatic Intracranial Hemorrhage ◽  
The Difference

IntroductionMultiple randomized trials have shown that endovascular thrombectomy (EVT) leads to improved outcomes in acute ischemic stroke (AIS) due to large vessel occlusion (LVO). Elderly patients were poorly represented in these trials, and the efficacy of EVT in nonagenarian patients remains uncertain.MethodsWe performed a retrospective cohort study at a single center. Inclusion criteria were: age 80–99, LVO, core infarct <70 mL, and salvageable penumbra. Patients were stratified into octogenarian (80–89) and nonagenarian (90–99) cohorts. The primary outcome was the ordinal score on the modified Rankin Scale (mRS) at 90 days. Secondary outcomes included dichotomized functional outcome (mRS ≤2 vs mRS ≥3), successful revascularization, symptomatic intracranial hemorrhage (ICH), and mortality.Results108 patients met the inclusion criteria, including 79 octogenarians (73%) and 29 nonagenarians (27%). Nonagenarians were more likely to be female (86% vs 58%; p<0.01); there were no other differences between groups in terms of demographics, medical comorbidities, or treatment characteristics. Successful revascularization (TICI 2b–3) was achieved in 79% in both cohorts. Median mRS at 90 days was 5 in octogenarians and 6 in nonagenarians (p=0.09). Functional independence (mRS ≤2) at 90 days was achieved in 12.5% and 19.7% of nonagenarians and octogenarians, respectively (p=0.54). Symptomatic ICH occurred in 21.4% and 6.4% (p=0.03), and 90-day mortality rate was 63% and 40.9% (p=0.07) in nonagenarians and octogenarians, respectively.ConclusionsNonagenarians may be at higher risk of symptomatic ICH than octogenarians, despite similar stroke- and treatment-related factors. While there was a trend towards higher mortality and worse functional outcomes in nonagenarians, the difference was not statistically significant in this relatively small retrospective study.

Identifying the predictors of first-pass effect and its influence on clinical outcome in the setting of endovascular thrombectomy for acute ischemic stroke: Results from a multicentric prospective registry

2020 ◽  
pp. 174749302092305 ◽  
Author(s):  
Federico Di Maria ◽  
Maéva Kyheng ◽  
Arturo Consoli ◽  
Jean-Philippe Desilles ◽  
Benjamin Gory ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Clinical Outcome ◽  
Acute Ischemic Stroke ◽  
Mechanical Thrombectomy ◽  
Modified Rankin Scale ◽  
Lower Systolic Blood Pressure ◽  
Excellent Outcome ◽  
First Pass Effect ◽  
First Pass ◽  
Thrombectomy Device

Background The first-pass effect, defined as a complete or near-complete recanalization after one pass (first-pass effect) of a mechanical thrombectomy device, has been related to better clinical outcome than good recanalization after more than one pass in acute ischemic stroke. We searched for predictors of first-pass effect by analyzing the results within a large prospective multicentric registry. Methods We included patients treated by mechanical thrombectomy for isolated anterior intracranial occlusions. A multi-variate logistic regression analysis was carried out to search for predictors of first-pass effect. We also analyzed the percentage of patients with 90-day modified Rankin Scale score 0 to 2, excellent outcome (90-day modified Rankin Scale 0 to 1), 24-h NIHSS change, and 90-day all-cause mortality. Results Among the 1832 patients included, clinical outcome at 90 days was significantly better in first-pass effect patients (50.6% vs. 38.9% in patients without first-pass effect), with a center-adjusted OR associated with first-pass effect of 1.74 (95%CI, 1.24 to 1.77). Older age, a lower systolic blood pressure, an MCA-M1 occlusion, higher DWI-ASPECTS at admission, mechanical thrombectomy under local anesthesia, and combined first-line device strategy were independent predictors of first-pass effect. Conclusions In this study, a strategy combining thrombectomy and thrombo-aspiration was more effective than other strategies in achieving first-pass effect. In addition, we confirm that clinical outcome was better in patients with first-pass effect compared to non-first-pass effect patients.

scholarly journals Selecting the Appropriate First-Line Strategy Based on Hyperdense Vessel Sign in Acute Ischemic Stroke Increases First Pass Recanalization: A Tertiary Center Experience

2022 ◽  
Author(s):  
Uday Bhanu Kovilapu ◽  
Narendra Jain ◽  
Atul Mishra ◽  
Virender Malik
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Mechanical Thrombectomy ◽  
Rescue Therapy ◽  
Large Vessel Occlusion ◽  
First Line ◽  
Vessel Occlusion ◽  
Tertiary Center ◽  
First Pass ◽  
Noncontrast Computed Tomography

Abstract Background: The data pertaining to selecting an optimal first-line strategy (stent retriever [SR] vs. contact aspiration [CA]) based on noncontrast computed tomography (NCCT) in cases of acute ischemic stroke consequent to large vessel occlusion (LVO) is lacking. Aims: This article studies the influence of hyperdense vessel sign (HVS) in selecting optimal first-line strategy, with intention of increasing first-pass recanalization (FPR). Methods: Upfront approach at our center is SR technique with rescue therapy (CA) adoption consequent to three failed SR attempts to achieve successful recanalization. Data of patients with acute LVO who underwent mechanical thrombectomy from June 2017 to May 2020 was retrospectively analyzed. Patients were classified into HVS (+) and HVS (–) cohort. Rate of successful recanalization (first pass, early, and final) and efficacy of rescue therapy was assessed between the two cohorts. Results: Of 52 patients included, 28 and 24 were assigned to the HVS (+) and HVS (–) cohort, respectively. FPR was observed in 50% of HVS (+) and 20.9% of HVS (–) (p = 0.029). Early recanalization was documented in 64.2% of HVS (+) and 37.5% of HVS (–) (p = 0.054). Rescue therapy need was higher in patients not demonstrating HVS (p = 0.062). Successful recanalization was achieved with rescue therapy in 50% of HVS (–) group. Conclusion: A higher FPR is achievable following individualized first-pass strategy (based on NCCT appearance of clot), instead of a generalized SR first-pass approach. This CT imaging-based strategy is a step closer to achieving primary angiographic goal of FPR.

scholarly journals Mechanical thrombectomy using the new Tigertriever in acute ischemic stroke patients – A Swiss prospective multicenter study

2020 ◽  
Vol 26 (5) ◽  
pp. 598-601
Author(s):  
Philipp Gruber ◽  
Michael Diepers ◽  
Alexander von Hessling ◽  
Johannes Weber ◽  
Timo Kahles ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Mechanical Thrombectomy ◽  
Large Vessel Occlusion ◽  
Stroke Patients ◽  
First Line ◽  
Prospective Multicenter Study ◽  
Vessel Occlusion ◽  
First Pass ◽  
Reperfusion Rate

Purpose Tigertriever is a novel operator-adjustable clot retriever designed to enhance the operator's options to control the interaction of retriever and clot. The aim of this study was to assess the feasibility, safety and efficacy of the Tigertriever device system. Methods Prospective multi-center registry study at three comprehensive stroke centers in Switzerland from 2017 to 2019 of patients with acute ischemic stroke (AIS) and large vessel occlusion (LVO) using Tigertriever as a first-line device. Results 30 AIS patients (median age 72.5 years (IQR 64–79), 50% women) with a median NIHSS on admission of 11 (IQR 6-13) and a median ASPECT score of 9 (IQR 7–10) were treated with the new Tigertriever and included in this study. The first-pass effect was 24% (n = 7). A good recanalization (eTICI 2 b/2c/3) was achieved in 94% of the cases. Median mRS at 90 days was 1 (IQR 1–2). Conclusion This study demonstrated feasibility, safety and effectiveness of the Tigertriever in AIS patients with LVO with a high reperfusion rate.

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