scholarly journals Better Collaterals Are Independently Associated With Post-Thrombolysis Recanalization Before Thrombectomy

Stroke ◽  
2019 ◽  
Vol 50 (4) ◽  
pp. 867-872 ◽  
Author(s):  
Pierre Seners ◽  
Pauline Roca ◽  
Laurence Legrand ◽  
Guillaume Turc ◽  
Jean-Philippe Cottier ◽  
...  
Keyword(s):  
Acute Stroke ◽  
Multivariable Analysis ◽  
Brain Magnetic Resonance Imaging ◽  
Intravenous Thrombolysis ◽  
Large Vessel ◽  
Dynamic Susceptibility ◽  
Collateral Flow ◽  
Large Vessel Occlusion ◽  
Vessel Occlusion ◽  
Perfusion Weighted Imaging

Background and Purpose— In acute stroke patients with large vessel occlusion, the goal of intravenous thrombolysis (IVT) is to achieve early recanalization (ER). Apart from occlusion site and thrombus length, predictors of early post-IVT recanalization are poorly known. Better collaterals might also facilitate ER, for instance, by improving delivery of the thrombolytic agent to both ends of the thrombus. In this proof-of-concept study, we tested the hypothesis that good collaterals independently predict post-IVT recanalization before thrombectomy. Methods— Patients from the registries of 6 French stroke centers with the following criteria were included: (1) acute stroke with large vessel occlusion treated with IVT and referred for thrombectomy between May 2015 and March 2017; (2) pre-IVT brain magnetic resonance imaging, including diffusion-weighted imaging, T2*, MR angiography, and dynamic susceptibility contrast perfusion-weighted imaging; and (3) ER evaluated ≤3 hours from IVT start on either first angiographic run or noninvasive imaging. A collateral flow map derived from perfusion-weighted imaging source data was automatically generated, replicating a previously validated method. Thrombus length was measured on T2*-based susceptibility vessel sign. Results— Of 224 eligible patients, 37 (16%) experienced ER. ER occurred in 10 of 83 (12%), 17 of 116 (15%), and 10 of 25 (40%) patients with poor/moderate, good, and excellent collaterals, respectively. In multivariable analysis, better collaterals were independently associated with ER ( P =0.029), together with shorter thrombus ( P <0.001) and more distal occlusion site ( P =0.010). Conclusions— In our sample of patients with stroke imaged with perfusion-weighted imaging before IVT and intended for thrombectomy, better collaterals were independently associated with post-IVT recanalization, supporting our hypothesis. These findings strengthen the idea that advanced imaging may play a key role for personalized medicine in identifying patients with large vessel occlusion most likely to benefit from IVT in the thrombectomy era.

scholarly journals Relationships between brain perfusion and early recanalization after intravenous thrombolysis for acute stroke with large vessel occlusion

2019 ◽  
Vol 40 (3) ◽  
pp. 667-677 ◽  
Author(s):  
Pierre Seners ◽  
Guillaume Turc ◽  
Stéphanie Lion ◽  
Jean-Philippe Cottier ◽  
Tae-Hee Cho ◽  
...  
Keyword(s):  
Multivariable Analysis ◽  
Intravenous Thrombolysis ◽  
Brain Perfusion ◽  
Large Vessel ◽  
Dynamic Susceptibility ◽  
Large Vessel Occlusion ◽  
Dynamic Susceptibility Contrast ◽  
Infarct Core ◽  
Vessel Occlusion ◽  
Susceptibility Contrast

In large vessel occlusion (LVO) stroke, it is unclear whether severity of ischemia is involved in early post-thrombolysis recanalization over and above thrombus site and length. Here we assessed the relationships between perfusion parameters and early recanalization following intravenous thrombolysis administration in LVO patients. From a multicenter registry, we identified 218 thrombolysed LVO patients referred for thrombectomy with both (i) pre-thrombolysis MRI, including diffusion-weighted imaging (DWI), T2*-imaging, MR-angiography and dynamic susceptibility-contrast perfusion-weighted imaging (PWI); and (ii) evaluation of recanalization on first angiographic run or non-invasive imaging ≤ 3 h from thrombolysis start. Infarct core volume on DWI, PWI-DWI mismatch volume and hypoperfusion intensity ratio (HIR; defined as Tmax ≥ 10 s volume/ Tmax ≥ 6 s volume, low HIR indicating milder hypoperfusion) were determined using a commercially available software. Early recanalization occurred in 34 (16%) patients, and multivariable analysis was associated with lower HIR ( P = 0.006), shorter thrombus on T2*-imaging ( P < 0.001) and more distal occlusion ( P = 0.006). However, the relationship between HIR and early recanalization was robust only for thrombus length <14 mm. In summary, the present study disclosed an association between lower HIR and early post-thrombolysis recanalization. Early post-thrombolysis recanalization is therefore determined not only by thrombus site and length but also by severity of ischemia.

Abstract TP82: Factors Associated With Good Collateral Flow in Acute Stroke Patients With Large Vessel Occlusion

Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Pierre Seners ◽  
Pauline Roca ◽  
Laurence Legrand ◽  
Guillaume Turc ◽  
Catherine Oppenheim ◽  
...  
Keyword(s):  
Acute Stroke ◽  
Large Vessel ◽  
Stroke Severity ◽  
Lesion Volume ◽  
Dynamic Susceptibility ◽  
Collateral Flow ◽  
Large Vessel Occlusion ◽  
Vessel Occlusion ◽  
Factors Associated ◽  
Tandem Occlusion

Introduction: Retrograde collateral flow is critical to maintain tissue perfusion despite large vessel occlusion. However, the premorbid factors associated with good collateral flow remain unclear, with substantial discrepancies in the literature. Methods: Patients from the registries of 6 French stroke centres with the following criteria were included: (1) acute stroke with isolated M1 occlusion ( i.e , without tandem occlusion) referred for thrombectomy between May 2015 and March 2017; and (2) baseline brain MRI, including diffusion weighted imaging, MR-angiography and dynamic susceptibility-contrast perfusion-weighted imaging (PWI). A collateral flow map derived from PWI source data was automatically generated, replicating Kim et al’s previously validated method (Ann. Neurol., 2014). Collateral flow was dichotomized into good and poor. The association between good collateral flow and baseline clinical, biological and radiological variables was studied. Results: One hundred and sixteen patients were included, of which 66 (57%) had good collaterals. As expected, the latter patients had lower admission NIHSS (median: 15 vs . 18, P=0.005) and lower baseline DWI lesion volume (median: 7ml vs . 32ml, P<0.001) than patient with poor collaterals. Onset-to-imaging delay and M1 occlusion site (proximal vs . distal) were similar in both groups (123min vs . 118min, P=0.75; 70% vs. 68%, P=0.85, respectively). There was no significant (P>0.05) difference in gender, age, history of hypertension or diabetes, current smoking, baseline blood glucose and use of statins or antiplatelets between the good and poor collaterals groups. Conclusions: Despite the expected association between PWI-derived collateral flow and baseline clinical and radiological stroke severity in our sample of acute M1 occlusions, there was no association with premorbid factors previously found associated in some -but not all- studies. Our findings suggest that collateral flow is predominantly explained by genetic factors.

Abstract 101: Predictors of Early Neurological Deterioration in Minor Strokes With Large Vessel Occlusion Treated With Intravenous Thrombolysis. A French Multicentric Observational Study (MINOR-STROKE)

Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Pierre Seners ◽  
Claire Perrin ◽  
Guillaume Turc
Keyword(s):  
Basilar Artery ◽  
Multivariable Analysis ◽  
Intravenous Thrombolysis ◽  
Neurological Deterioration ◽  
Large Vessel ◽  
Minor Stroke ◽  
Large Vessel Occlusion ◽  
Vessel Occlusion ◽  
Early Neurological Deterioration ◽  
Proximal Occlusion

Introduction: Whether thrombectomy added on intravenous thrombolysis (IVT), as compared to IVT alone, is beneficial in minor strokes with large vessel occlusion (LVO) is unknown. To identify predictors of early neurological deterioration (END) following IVT alone may help to select the best candidates for additional thrombectomy. Methods: MINOR-STROKE was a multicentric retrospective registry collecting data of IVT-treated minor strokes (NIHSS≤5) with LVO (internal carotid artery [ICA], M1, M2 or basilar artery; with central reading) treated with or without additional thrombectomy in 45 French stroke units. The patients initially intended for IVT alone, including those who eventually received thrombectomy due to END, were included in the present analysis. END was defined as a ≥4 points on NIHSS within 24hrs following admission. Thrombus length was measured centrally either on T2*-MRI, CT (hyperdense middle cerebral artery) or CT-angiography. Results: Overall, 799 patients were included: mean age 69 years, median NIHSS 3, occlusion located in ICA±M1/M2, proximal M1, distal M1, M2, or basilar artery in 20%, 7%, 19%, 50% and 4% of patients, respectively. Thrombus was visible in 78% of patients (median length 9mm, IQR 6-12mm). END occurred in 15% of patients and was associated with poor 3-month functional outcome (mRS>2: 55% vs. 12% of patients with and without END, respectively). Only 15% of ENDs were due to intracranial haemorrhage. In multivariable analysis, a more proximal occlusion site (M2 [reference], distal M1: OR 2.1 [IC95% 1.1-4.1], proximal M1: OR 3.8 [1.6-9.1], ICA±M1/M2: OR 5.0 [2.6-9.6], basilar artery: OR 4.9 [1.1-4.1]; P <0.001) and a longer thrombus (<6mm [reference], [6-9mm[: OR 1.3 [IC95% 0.6-2.9], [9-12mm[: OR 1.8 [0.8-3.9] and ≥12mm: OR 2.7 [1.3-5.6]; P =0.036) were independently associated with END. END occurred in 33%, 19%, 14%, 7% and 27% of patients with ICA±M1/M2, M1 proximal, M1 distal, M2 and basilar artery, respectively, and in 8%, 10%, 14% et 23% of patients with thrombus length of <6, [6-9[, [9-12[ and ≥12mm, respectively. Conclusion: Our study suggests that thrombus location and length are strong predictors of END in minor strokes with LVO. This may help to select the best candidates for additional endovascular therapy.

Abstract WP65: Relationships Between Brain Perfusion and Early Recanalization After Intravenous Thrombolysis for Acute Stroke With Large Vessel Occlusion

Stroke ◽  
2019 ◽  
Vol 50 (Suppl_1) ◽  
Author(s):  
Jean Claude Baron ◽  
pierre seners ◽  
Guillaume Turc ◽  
Stephanie Lion ◽  
Jean-Louis Mas ◽  
...  
Keyword(s):  
Acute Stroke ◽  
Intravenous Thrombolysis ◽  
Brain Perfusion ◽  
Large Vessel ◽  
Large Vessel Occlusion ◽  
Vessel Occlusion

scholarly journals Stroke Intervention: Geographic Disparities in Acute Stroke Care and the Role of Interventional Cardiology

2020 ◽  
Keyword(s):  
Acute Stroke ◽  
Case Series ◽  
Intravenous Thrombolysis ◽  
Interventional Cardiology ◽  
Stroke Care ◽  
Large Vessel ◽  
Large Vessel Occlusion ◽  
Acute Stroke Care ◽  
Vessel Occlusion ◽  
Geographic Disparities

Stroke is the second-leading cause of death and a major cause of disability worldwide. The majority of strokes are ischaemic, and effective therapy to achieve reperfusion includes intravenous thrombolysis and, for proximal large vessel occlusion strokes, endovascular mechanical thrombectomy (MT). There has been a paradigm shift in acute stroke care, driven by a series of randomised controlled trials demonstrating that timely reperfusion with MT results in superior outcomes compared to intravenous thrombolysis in patients with large vessel occlusion strokes. There are significant geographic disparities in delivering acute stroke care because of the maldistribution of neurointerventional specialists. There are now several case series demonstrating the feasibility and safety of first medical contact MT by carotid stent-capable interventional cardiologists and noninvasive neurologists working on stroke teams, which is a solution to the uneven distribution of neurointerventionalists and allows stroke interventions to be delivered in local communities.

Flow augmentation STA-MCA bypass evaluation for patients with acute stroke and unilateral large vessel occlusion: a proposal for an urgent bypass flowchart

2022 ◽  
pp. 1-9
Keyword(s):  
Acute Stroke ◽  
Scale Score ◽  
Collateral Circulation ◽  
Positive Impact ◽  
Blood Oxygenation ◽  
Cerebrovascular Reactivity ◽  
Large Vessel ◽  
Collateral Flow ◽  
Large Vessel Occlusion ◽  
Vessel Occlusion

OBJECTIVE Endovascular recanalization trials have shown a positive impact on the preservation of ischemic penumbra in patients with acute large vessel occlusion (LVO). The concept of penumbra salvation can be extended to surgical revascularization with bypass in highly selected patients. For selecting these patients, the authors propose a flowchart based on multimodal MRI. METHODS All patients with acute stroke and persisting internal carotid artery (ICA) or M1 occlusion after intravenous lysis or mechanical thrombectomy undergo advanced neuroimaging in a time window of 72 hours after stroke onset including perfusion MRI, blood oxygenation level–dependent functional MRI to evaluate cerebrovascular reactivity (BOLD-CVR), and noninvasive optimal vessel analysis (NOVA) quantitative MRA to assess collateral circulation. RESULTS Symptomatic patients exhibiting persistent hemodynamic impairment and insufficient collateral circulation could benefit from bypass surgery. According to the flowchart, a bypass is considered for patients 1) with low or moderate neurological impairment (National Institutes of Health Stroke Scale score 1–15, modified Rankin Scale score ≤ 3), 2) without large or malignant stroke, 3) without intracranial hemorrhage, 4) with MR perfusion/diffusion mismatch > 120%, 5) with paradoxical BOLD-CVR in the occluded vascular territory, and 6) with insufficient collateral circulation. CONCLUSIONS The proposed flowchart is based on the patient’s clinical condition and multimodal MR neuroimaging and aims to select patients with acute stroke due to LVO and persistent inadequate collateral flow, who could benefit from urgent bypass.

scholarly journals Combination of Rescue Stenting and Antiplatelet Infusion Improved Outcomes for Acute Intracranial Atherosclerosis-Related Large-Vessel Occlusion

2021 ◽  
Vol 12 ◽  
Author(s):  
Jang-Hyun Baek ◽  
Cheolkyu Jung ◽  
Byung Moon Kim ◽  
Ji Hoe Heo ◽  
Dong Joon Kim ◽  
...  
Keyword(s):  
Acute Stroke ◽  
Multivariable Analysis ◽  
Large Vessel ◽  
Favorable Outcome ◽  
Intracranial Atherosclerosis ◽  
Large Vessel Occlusion ◽  
Vessel Occlusion ◽  
Improved Outcomes

Background and Purpose: Intracranial atherosclerosis-related large-vessel occlusion caused by in situ thrombo-occlusion (ICAS-LVO) has been regarded an important reason for refractoriness to mechanical thrombectomy (MT). To achieve better outcomes for ICAS-LVO, different endovascular strategies should be explored. We aimed to investigate an optimal endovascular strategy for ICAS-LVO.Methods: We retrospectively reviewed three prospective registries of acute stroke underwent endovascular treatment. Among them, patients with ICAS-LVO were assigned to four groups based on their endovascular strategy: (1) MT alone, (2) rescue intracranial stenting after MT failure (MT-RS), (3) glycoprotein IIb/IIIa inhibitor infusion after MT failure (MT-GPI), and (4) a combination of MT-RS and MT-GPI (MT-RS+GPI). Baseline characteristics and outcomes were compared among the groups. To evaluate whether the endovascular strategy resulted in favorable outcome, multivariable analysis was also performed.Results: A total of 184 patients with ICAS-LVO were included. Twenty-four patients (13.0%) were treated with MT alone, 25 (13.6%) with MT-RS, 84 (45.7%) with MT-GPI, and 51 (27.7%) with MT-RS+GPI. The MT-RS+GPI group showed the highest recanalization efficiency (98.0%). Frequency of patent arteries on follow-up (98.0%, p &lt; 0.001) and favorable outcome (84.3%, p &lt; 0.001) were higher in the MT-RS+GPI group than other groups. The MT-RS+GPI strategy remained an independent factor for favorable outcome (odds ratio, 20.4; 95% confidence interval, 1.97–211.4; p = 0.012).Conclusion: Endovascular strategy was significantly associated with procedural and clinical outcomes in acute stroke by ICAS-LVO. A combination of RS and GPI infusion might be an optimal rescue modality when frontline MT fails.

scholarly journals Diagnostic value of transcranial ultrasonography for selecting subjects with large vessel occlusion: a systematic review

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Daria Antipova ◽  
Leila Eadie ◽  
Ashish Stephen Macaden ◽  
Philip Wilson
Keyword(s):  
Systematic Review ◽  
Diagnostic Accuracy ◽  
Acute Stroke ◽  
Clinical Assessment ◽  
Assessment Tools ◽  
Large Vessel ◽  
Cochrane Library ◽  
Direct Transfer ◽  
Large Vessel Occlusion ◽  
Vessel Occlusion

Abstract Introduction A number of pre-hospital clinical assessment tools have been developed to triage subjects with acute stroke due to large vessel occlusion (LVO) to a specialised endovascular centre, but their false negative rates remain high leading to inappropriate and costly emergency transfers. Transcranial ultrasonography may represent a valuable pre-hospital tool for selecting patients with LVO who could benefit from rapid transfer to a dedicated centre. Methods Diagnostic accuracy of transcranial ultrasonography in acute stroke was subjected to systematic review. Medline, Embase, PubMed, Scopus, and The Cochrane Library were searched. Published articles reporting diagnostic accuracy of transcranial ultrasonography in comparison to a reference imaging method were selected. Studies reporting estimates of diagnostic accuracy were included in the meta-analysis. Results Twenty-seven published articles were selected for the systematic review. Transcranial Doppler findings, such as absent or diminished blood flow signal in a major cerebral artery and asymmetry index ≥ 21% were shown to be suggestive of LVO. It demonstrated sensitivity ranging from 68 to 100% and specificity of 78–99% for detecting acute steno-occlusive lesions. Area under the receiver operating characteristics curve was 0.91. Transcranial ultrasonography can also detect haemorrhagic foci, however, its application is largely restricted by lesion location. Conclusions Transcranial ultrasonography might potentially be used for the selection of subjects with acute LVO, to help streamline patient care and allow direct transfer to specialised endovascular centres. It can also assist in detecting haemorrhagic lesions in some cases, however, its applicability here is largely restricted. Additional research should optimize the scanning technique. Further work is required to demonstrate whether this diagnostic approach, possibly combined with clinical assessment, could be used at the pre-hospital stage to justify direct transfer to a regional thrombectomy centre in suitable cases.

scholarly journals Endovascular therapy in patients with large vessel occlusion due to cardioembolism versus large-artery atherosclerosis

2021 ◽  
Vol 14 ◽  
pp. 175628642199901
Author(s):  
Meredeth Zotter ◽  
Eike I. Piechowiak ◽  
Rupashani Balasubramaniam ◽  
Rascha Von Martial ◽  
Kotryna Genceviciute ◽  
...  
Keyword(s):  
Heart Failure ◽  
Endovascular Therapy ◽  
Independent Predictor ◽  
Intravenous Thrombolysis ◽  
Stent Retriever ◽  
Large Vessel ◽  
Large Artery ◽  
Large Vessel Occlusion ◽  
Vessel Occlusion ◽  
Significant Difference

Background and aims: To investigate whether stroke aetiology affects outcome in patients with acute ischaemic stroke who undergo endovascular therapy. Methods: We retrospectively analysed patients from the Bernese Stroke Centre Registry (January 2010–September 2018), with acute large vessel occlusion in the anterior circulation due to cardioembolism or large-artery atherosclerosis, treated with endovascular therapy (±intravenous thrombolysis). Results: The study included 850 patients (median age 77.4 years, 49.3% female, 80.1% with cardioembolism). Compared with those with large-artery atherosclerosis, patients with cardioembolism were older, more often female, and more likely to have a history of hypercholesterolaemia, atrial fibrillation, current smoking (each p < 0.0001) and higher median National Institutes of Health Stroke Scale (NIHSS) scores on admission ( p = 0.030). They were more frequently treated with stent retrievers ( p = 0.007), but the median number of stent retriever attempts was lower ( p = 0.016) and fewer had permanent stent placements ( p ⩽ 0.004). Univariable analysis showed that patients with cardioembolism had worse 3-month survival [72.7% versus 84%, odds ratio (OR) = 0.51; p = 0.004] and modified Rankin scale (mRS) score shift ( p = 0.043) and higher rates of post-interventional heart failure (33.5% versus 18.5%, OR = 2.22; p < 0.0001), but better modified thrombolysis in cerebral infarction (mTICI) score shift ( p = 0.025). Excellent (mRS = 0–1) 3-month outcome, successful reperfusion (mTICI = 2b–3), symptomatic intracranial haemorrhage and Updated Charlson Comorbidity Index were similar between groups. Propensity-matched analysis found no statistically significant difference in outcome between stroke aetiology groups. Stroke aetiology was not an independent predictor of favourable mRS score shift, but lower admission NIHSS score, younger age and independence pre-stroke were (each p < 0.0001). Stroke aetiology was not an independent predictor of heart failure, but older age, admission antithrombotics and dependence pre-stroke were (each ⩽0.027). Stroke aetiology was not an independent predictor of favourable mTICI score shift, but application of stent retriever and no permanent intracranial stent placement were (each ⩽0.044). Conclusion: We suggest prospective studies to further elucidate differences in reperfusion and outcome between patients with cardioembolism and large-artery atherosclerosis.

Sign in / Sign up

Export Citation Format

Share Document