scholarly journals Comparative Studies of Cerebral Reperfusion Injury in the Posterior and Anterior Circulations After Mechanical Thrombectomy

2022 ◽  
Author(s):  
Matthew M. Bower ◽  
Shuichi Suzuki ◽  
Kiarash Golshani ◽  
Li-Mei Lin ◽  
Mohammad Shafie ◽  
...  
Keyword(s):  
Reperfusion Injury ◽  
Functional Outcome ◽  
Mechanical Thrombectomy ◽  
Posterior Circulation ◽  
Favorable Outcome ◽  
Contrast Extravasation ◽  
Nihss Score ◽  
Significant Difference ◽  
Cerebral Reperfusion ◽  
Cerebral Reperfusion Injury

AbstractCerebral reperfusion injury is the major complication of mechanical thrombectomy (MT) for acute ischemic stroke (AIS). Contrast extravasation (CE) and intracranial hemorrhage (ICH) are the key radiographical features of cerebral reperfusion injury. The aim of this study was to investigate CE and ICH after MT in the anterior and posterior circulation, and their effect on functional outcome. This is a retrospective study of all consecutive patients who were treated with MT for AIS at University of California Irvine Medical Center between January 1, 2014, and December 31, 2017. Patient characteristics, clinical features, procedural variables, contrast extravasation, ICH, and outcomes after MT were analyzed. A total of 131 patients with anterior circulation (AC) stroke and 25 patients with posterior circulation (PC) stroke underwent MT during the study period. There was no statistically significant difference in admission NIHSS score, blood pressure, rate of receiving intravenous tPA, procedural variables, contrast extravasation, and symptomatic ICH between the 2 groups. Patients with PC stroke had a similar rate of favorable outcome (mRS 0–2) but significantly higher mortality (40.0% vs. 10.7%, p < 0.01) than patients with AC stroke. Multivariate regression analysis identified initial NIHSS score (OR 1.1, CI 1.0–1.2, p = 0.01), number of passes with stent retriever (OR 2.1, CI 1.3–3.6, p < 0.01), and PC stroke (OR 9.3, CI 2.5–35.1, p < 0.01) as independent risk factors for death. There was no significant difference in functional outcomes between patients with and without evidence of cerebral reperfusion injury after MT. We demonstrated that AC and PC stroke had similar rates of cerebral reperfusion injury and favorable outcome after MT. Cerebral reperfusion injury is not a significant independent risk factor for poor functional outcome.

scholarly journals Extent of Hypoattenuation on CT Angiography Source Images in Basilar Artery Occlusion

Stroke ◽  
2011 ◽  
Vol 42 (12) ◽  
pp. 3454-3459 ◽  
Author(s):  
Volker Puetz ◽  
Andrei Khomenko ◽  
Michael D. Hill ◽  
Imanuel Dzialowski ◽  
Patrik Michel ◽  
...  
Keyword(s):  
Functional Outcome ◽  
Ct Angiography ◽  
Basilar Artery ◽  
Functional Independence ◽  
Artery Occlusion ◽  
Posterior Circulation ◽  
Favorable Outcome ◽  
Basilar Artery Occlusion ◽  
Modified Rankin Scale ◽  
Scale Scores

Background and Purpose— The posterior circulation Acute Stroke Prognosis Early CT Score (pc-ASPECTS) quantifies the extent of early ischemic changes in the posterior circulation with a 10-point grading system. We hypothesized that pc-ASPECTS applied to CT angiography source images predicts functional outcome of patients in the Basilar Artery International Cooperation Study (BASICS). Methods— BASICS was a prospective, observational registry of consecutive patients with acute symptomatic basilar artery occlusion. Functional outcome was assessed at 1 month. We applied pc-ASPECTS to CT angiography source images of patients with CT angiography for confirmation of basilar artery occlusion. We calculated unadjusted and adjusted risk ratios (RRs) of pc-ASPECTS dichotomized at ≥8 versus <8. Primary outcome measure was favorable outcome (modified Rankin Scale scores 0–3). Secondary outcome measures were mortality and functional independence (modified Rankin Scale scores 0–2). Results— Of 158 patients included, 78 patients had a CT angiography source images pc-ASPECTS ≥8. Patients with a pc-ASPECTS ≥8 more often had a favorable outcome than patients with a pc-ASPECTS <8 (crude RR, 1.7; 95% CI, 0.98–3.0). After adjustment for age, baseline National Institutes of Health Stroke Scale score, and thrombolysis, pc-ASPECTS ≥8 was not related to favorable outcome (RR, 1.3; 95% CI, 0.8–2.2), but it was related to reduced mortality (RR, 0.7; 95% CI, 0.5–0.98) and functional independence (RR, 2.0; 95% CI, 1.1–3.8). In post hoc analysis, pc-ASPECTS dichotomized at ≥6 versus <6 predicted a favorable outcome (adjusted RR, 3.1; 95% CI, 1.2–7.5). Conclusions— pc-ASPECTS on CT angiography source images independently predicted death and functional independence at 1 month in the CT angiography subgroup of patients in the BASICS registry.

Mechanical thrombectomy versus intravenous alteplase alone in acute isolated posterior cerebral artery occlusion: a systematic review

2021 ◽  
pp. neurintsurg-2021-018017
Author(s):  
Andre Monteiro ◽  
Slah Khan ◽  
Muhammad Waqas ◽  
Rimal H Dossani ◽  
Nicco Ruggiero ◽  
...  
Keyword(s):  
Cerebral Artery ◽  
Mechanical Thrombectomy ◽  
Posterior Cerebral Artery ◽  
Artery Occlusion ◽  
Favorable Outcome ◽  
Intravenous Tissue Plasminogen Activator ◽  
Significant Difference ◽  
Symptomatic Intracranial Hemorrhage ◽  
Cerebral Artery Occlusion ◽  
Iv Tpa

BackgroundAcute isolated posterior cerebral artery occlusions (aPCAOs) were excluded or under-represented in major randomized trials of mechanical thrombectomy (MT). The benefit of MT in comparison to intravenous tissue plasminogen activator (alteplase; IV-tPA) alone in these patients remains controversial and uncertain.MethodsWe performed a systematic search of PubMed, MEDLINE, and EMBASE databases for articles comparing MT with or without bridging IV-tPA and IV-tPA alone for aPCAO using keywords (‘posterior cerebral artery’, ‘thrombolysis’ and ‘thrombectomy’) with Boolean operators. Extracted data from patients reported in the studies were pooled into groups (MT vs IV-tPA alone) for comparison. Estimated rates for favorable outcome (modified Rankin scale score 0–2), symptomatic intracranial hemorrhage (sICH), and mortality were extracted.ResultsSeven articles (201 MT patients, 64 IV-tPA) were included, all retrospective. There was no statistically significant difference between pooled groups in median age, median presentation National Institutes of Health Stroke Scale (NIHSS) score, PCAO segment, and median time from symptom onset to puncture or needle. The recanalization rate was significantly higher in the MT group than the IV-tPA group (85.6% vs 53.1%, p<0.00001). Odds ratios for favorable outcome (OR 1.5, 95% CI 0.8 to 2.5), sICH (OR 1.1, 95% CI 0.2 to 5.5), and mortality (OR 1.4, 95% CI 0.5 to 3.6) did not significantly favor any modality.ConclusionsWe found no significant differences in odds of favorable outcome, sICH, and mortality in MT and IV-tPA in comparable aPCAO patients, despite superior MT recanalization rates. Equipoise remains regarding the optimal treatment modality for these patients.

Abstract TP120: Plasma D-dimer Level and Cerebral Infarction Volume in Patients With Nonvalvular Atrial Fibrillation

Stroke ◽  
2013 ◽  
Vol 44 (suppl_1) ◽  
Author(s):  
Mari Matsumoto ◽  
Manabu Sakaguchi ◽  
Shuhei Okazaki ◽  
Shigetaka Furukado ◽  
Masafumi Tagaya ◽  
...  
Keyword(s):  
Risk Factors ◽  
Atrial Fibrillation ◽  
Blood Pressure ◽  
Functional Outcome ◽  
National Institutes Of Health ◽  
Nonvalvular Atrial Fibrillation ◽  
Nihss Score ◽  
Significant Difference ◽  
Infarction Volume ◽  
D Dimer

Introduction and Hypothesis: The purpose of this study was to investigate the association between plasma D-dimer level at admission and infarct size in non-valvular atrial fibrillation (NVAF) patients. Methods: We identified 124 patients with consecutive ischemic stroke and NVAF who were admitted within 48 hours of symptom onset. We measured infarction volume from CT taken after 3±1 days from the onset. Relationships were analysed between infarction volume, risk factors, preadmission medications and admission conditions. We also assessed the functional outcome by tertile of D-dimer level (≦ 0.83, 0.83-2.16, ≧ 2.16 μg/mL) in patients with preadmission modified Rankin Scale (mRS) score of 0-1. Results: Infarction volume significantly correlated with D-dimer level (r=0.309, p < 0.001) (Figure 1), systolic blood pressure (r=0.201, p=0.026), diastolic blood pressure (r=0.283, p=0.002), National Institutes of Health Stroke Scale (NIHSS) score on admission (r=0.546, p < 0.001) and mRS score at discharge (r=0.557, p<0.001). Multivariate regression analyses showed that the D-dimer level was significantly associated with infarction volume (p=0.043) after adjustment with known risk factors. In patients with a preadmission mRS score of 0-1 patients (n=108), D-dimer level was significantly associated with NIHSS score at admission (r=0.318, p<0.001) and mRS score at discharge (r=0.310, p=0.001).Significant difference existed among tertiles (p = 0.003)(Figure 2). Conclusions: Plasma D-dimer level on admission is significantly related to infarction volume and functional outcome, following cardioembolic stroke in NVAF patients.

scholarly journals Mechanical thrombectomy for basilar artery occlusion: efficacy, outcomes, and futile recanalization in comparison with the anterior circulation

2019 ◽  
Vol 11 (12) ◽  
pp. 1174-1180 ◽  
Author(s):  
Thomas Raphael Meinel ◽  
Johannes Kaesmacher ◽  
Panagiotis Chaloulos-Iakovidis ◽  
Leonidas Panos ◽  
Pasquale Mordasini ◽  
...  
Keyword(s):  
Basilar Artery ◽  
Mechanical Thrombectomy ◽  
Artery Occlusion ◽  
Favorable Outcome ◽  
Basilar Artery Occlusion ◽  
Secondary Outcome ◽  
Stroke Severity ◽  
Anterior Circulation ◽  
Link Type ◽  
Significant Difference

BackgroundPerforming mechanical thrombectomy (MT) in patients with basilar artery occlusion (BAO) is currently not evidence-based.ObjectiveTo compare patients’ outcome, relative merits of achieving recanalization, and predictors of futile recanalization (FR) between BAO and anterior circulation large vessel occlusion (ACLVO) MT.MethodsIn the multicenter BEYOND-SWIFT registry (NCT03496064), univariate and multivariate (displayed as adjusted Odds Ratios, aOR and 95% confidence intervals, 95%-CI) outcome comparisons between BAO (N=165) and ACLVO (N=1574) were performed. The primary outcome was favorable outcome at 90 days (modified Rankin Scale, mRS 0-2). Secondary outcome included mortality, symptomatic intracranial hemorrhage (sICH) and FR. The relative merits of achieving successful recanalization between ACLVO and BAO were evaluated with interaction terms.ResultsMT in BAO was more often technically effective and equally safe in regards to mortality and sICH when compared to ACLVO. When adjusting for baseline differences, there was no significant difference between BAO vs ACLVO regarding rates of favorable outcome (aOR 0.986, 95%-CI 0.553 – 1.758). However, BAO were associated with increased rates of FR (aOR 2.146, 95%-CI 1.267 – 3.633). Predictors for FR were age, stroke severity, maneuver count and intracranial stenting. No significant heterogeneity on the relative merits of achieving successful recanalization on several outcome parameters were observed when comparing BAO and ACLVO.ConclusionsIn selected patients, similar outcomes can be achieved in BAO and ACLVO patients treated with MT. Randomized controlled trials comparing patient selection and interventional strategies seem warranted to avoid FR.Trial registration numberNCT03496064

Presence of the hyperintense acute reperfusion marker on MRI after mechanical thrombectomy for large vessel occlusion is associated with worse early neurological recovery

2016 ◽  
Vol 9 (7) ◽  
pp. 641-643 ◽  
Author(s):  
Rishi Gupta ◽  
Chung-Huan Johnny Sun ◽  
Dustin Rochestie ◽  
Kumiko Owada ◽  
Ahmad Khaldi ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Reperfusion Injury ◽  
Mechanical Thrombectomy ◽  
Binary Logistic Regression ◽  
Functional Independence ◽  
Large Vessel ◽  
Neurological Recovery ◽  
Large Vessel Occlusion ◽  
Vessel Occlusion ◽  
Nihss Score

BackgroundMechanical thrombectomy has become the accepted treatment for large vessel occlusion in acute ischemic stroke. Unfortunately, a large cohort of patients do not achieve functional independence with treatment, even though the results are more robust than with medical management. The hyperintense acute reperfusion marker (HARM) on MRI is an indication of the breakdown of the blood–brain barrier and reperfusion injury.ObjectiveTo examine the hypothesis that the presence of HARM on MRI correlates with worse neurological recovery after reperfusion therapy.MethodsWe retrospectively reviewed 35 consecutive patients who between February 24, 2016 and April 23, 2016 underwent MRI to determine the presence of HARM after thrombectomy for anterior circulation large vessel occlusion. Demographic, radiographic imaging, and outcome data were collected. Univariate and binary logistic regression models were performed to assess predictors for improvement of the National Institutes of Health Stroke Scale (NIHSS) score by ≥8 points at 24 hours.ResultsThe 35 patients studied had an average age of 64±14 years of age with a median NIHSS score of 15 (IQR 9–20). Eighteen patients (51%) were found to have a HARM-positive MRI. In univariate analysis, patients with HARM were older, had lower reperfusion rates and more postprocedural hemorrhages. In binary logistic regression modeling, the absence of HARM was independently associated with a ≥8-point NIHSS score improvement at 24 hours (OR=7.14, 95% CI 1.22 to 41.67).ConclusionsThis preliminary analysis shows that the presence of HARM may be linked to worse neurological recovery 24 hours after thrombectomy. Reperfusion injury may affect the number of patients achieving functional independence after treatment.

Comparison of outcome and interventional complication rate in patients with acute stroke treated with mechanical thrombectomy with and without bridging thrombolysis

2016 ◽  
Vol 9 (3) ◽  
pp. 229-233 ◽  
Author(s):  
Ralph Weber ◽  
Hannes Nordmeyer ◽  
Jeffrie Hadisurya ◽  
Markus Heddier ◽  
Michael Stauder ◽  
...  
Keyword(s):  
Acute Stroke ◽  
Functional Outcome ◽  
Mechanical Thrombectomy ◽  
Independent Predictor ◽  
Intravenous Thrombolysis ◽  
Favorable Outcome ◽  
Complication Rates ◽  
Modified Rankin Scale

BackgroundNo randomized trial has investigated the effect of mechanical thrombectomy (MT) alone in patients with acute stroke. There are conflicting results as to whether prior intravenous thrombolysis (IVT) facilitates subsequent MT, and data in patients treated with MT alone owing to contraindications to IVT are limited.ObjectiveTo compare consecutive patients treated with MT alone or with preceding IVT in a large tertiary neurointerventional center, with special emphasis on contraindications to IVT.MethodsRetrospective analysis of 283 consecutive patients with acute ischemic stroke treated with MT in a tertiary neurovascular center over 14 months. Data on characteristics of periprocedural times, recanalization rate, complications, and long-term functional outcome were collected prospectively.ResultsInformation on prior IVT and functional outcome was available in 250 patients. Mean (SD) follow-up period was 5.7 (5.1) months and 105 (42%) patients received both IVT and MT. No significant differences were found in successful recanalization rates (Thrombolysis in Cerebral Infarction (TICI) 2b/3, 73.8% vs 73.1, p=0.952), complication rates, and long-term favorable outcome (modified Rankin Scale 0–2, 35.2% vs 40%, p=0.444) between patients receiving MT plus IVT and those receiving MT alone. A favorable outcome in patients directly treated with MT alone who were eligible for IVT was achieved in 48.2%. Thrombectomy was safe and resulted in a favorable outcome in 32% of patients with absolute contraindications to IVT.ConclusionsPreceding use of IVT was not an independent predictor of favorable outcome in patients with acute stroke treated with MT and complication rates did not differ whether or not IVT was used. MT is safe and achieved a favorable outcome in one-third of patients with stroke ineligible for IVT.

Predictors of Cerebral Reperfusion Injury After Carotid Stenting: The Role of Transcranial Color-Coded Doppler Ultrasonography

2010 ◽  
Vol 17 (4) ◽  
pp. 556-563 ◽  
Author(s):  
Anna Kablak-Ziembicka ◽  
Tadeusz Przewlocki ◽  
Piotr Pieniazek ◽  
Piotr Musialek ◽  
Lukasz Tekieli ◽  
...  
Keyword(s):  
Reperfusion Injury ◽  
Doppler Ultrasonography ◽  
Carotid Stenting ◽  
Cerebral Reperfusion ◽  
Cerebral Reperfusion Injury

Absent hyperdense middle cerebral artery sign is associated with poor functional outcome after mechanical thrombectomy

2021 ◽  
pp. 174749302199197
Author(s):  
Kiddy L Ume ◽  
Sudeepta Dandapat ◽  
Matthew W Weber ◽  
Cynthia B Zevallos ◽  
Amber Fifer ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Middle Cerebral Artery ◽  
Functional Outcome ◽  
Cerebral Artery ◽  
Functional Disability ◽  
Mechanical Thrombectomy ◽  
Artery Occlusion ◽  
Serum Glucose ◽  
Significant Difference ◽  
Hyperdense Middle Cerebral Artery

Background The hyperdense middle cerebral artery sign on computed tomography indicates proximal middle cerebral artery occlusion. Recent reports suggest an association between the hyperdense sign and successful reperfusion. The prognostic value of the hyperdense middle cerebral artery sign in patients receiving mechanical thrombectomy has not been extensively studied. Aims Our study aims to evaluate the association between the hyperdense middle cerebral artery sign and functional outcome in patients with M1 occlusions that had undergone mechanical thrombectomy. Methods We conducted a single-center retrospective observational cohort study of 102 consecutive patients presenting with acute M1 occlusions that had undergone mechanical thrombectomy. Patients were stratified into cohorts based on the presence of hyperdense middle cerebral artery sign visually assessed on computed tomography by two readers. The outcomes of interests were functional disability measured by the ordinal Modified Rankin Scale (mRS) at 90 days, mortality, reperfusion status and hemorrhagic conversion. Results Out of the 102 patients with M1 occlusions, 71 had hyperdense middle cerebral artery sign. There was no significant difference between the cohorts in age, baseline mRS, NIHSS, ASPECTS, and time to reperfusion. The absence of hyperdense middle cerebral artery sign was associated with increased odds of being dependent or dying (higher mRS) (OR: 3.24, 95% CI: 1.30–8.06, p = 0.011) after adjusting for other significant predictors, including age, female sex, hypertension, presenting serum glucose, ASPECTS, CTA collateral score, and successful reperfusion. Conclusion The absence of hyperdense middle cerebral artery sign is associated with worse functional outcome in patients presenting with M1 occlusions undergoing thrombectomy.

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