scholarly journals Racial Differences in Mechanical Thrombectomy Utilization for Ischemic Stroke in the United States

2020 ◽  
Vol 30 (1) ◽  
pp. 91-96 ◽  
Author(s):  
Charles Esenwa ◽  
Alain Lekoubou ◽  
Kinfe G. Bishu ◽  
Kemar Small ◽  
Ava Liberman ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Racial Differences ◽  
Population Sample ◽  
Standard Of Care ◽  
Stroke Care ◽  
The United States ◽  
Vessel Occlusion ◽  
Stroke Treatment ◽  
Nationally Representative ◽  
Adjusted Model

Background: Compared with non-Hispanic Whites (NHW), racial-ethnic minorities bear a disproportionate burden of stroke and receive fewer evidence-based stroke care processes and treatments. Since 2015, me­chanical thrombectomy (MT) has become standard of care for acute ischemic stroke (AIS) patients with proximal anterior circula­tion large vessel occlusion (LVO).Objectives: Our objectives were to: assess recent trends in nationwide MT utilization among patients with AIS; determine if there were racial differences; and identify what factors were associated with such differ­ences.Methods: We performed a retrospective cohort study using nationally representative data of a non-institutionalized population sample from 2006 to 2014 obtained from the Nationwide Inpatient Sample (NIS). We identified a total of 889,309 observations of AIS, of which there were 5,256 MT observa­tions.Results: In the fully adjusted model, rate of thrombectomy utilization was significantly lower in African Americans (AA) (OR .67, CI .58-.76, P<.001) compared with NHW and Hispanics (OR .94, CI .78-1.13, P=.5).Conclusion: We found a significant dispar­ity in MT utilization for AA compared with NHW and Hispanics. More work is needed to understand the drivers of this racial disparity in stroke treatment. Ethn Dis. 2020;30(1):91-96; doi:10.18865/ed.30.1.91

scholarly journals Endovascular Acute Ischemic Stroke Treatment with FlowGate Balloon Guide Catheter: A Single-Center Observational Study of FlowGate Balloon Guide Catheter Use

2018 ◽  
Vol 7 (6) ◽  
pp. 327-333 ◽  
Author(s):  
Mohamed S. Teleb
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Mechanical Thrombectomy ◽  
Standard Of Care ◽  
Vessel Occlusion ◽  
Stroke Treatment ◽  
Guide Catheter ◽  
Stent Retrievers ◽  
Number Of Passes ◽  
Single Center Observational Study

Background: Treatment of large vessel occlusion acute ischemic stroke with mechanical thrombectomy has become the standard of care after recent clinical trials. However, the degree of recanalization with stent retrievers remains very important in overall outcomes. We sought to review the utility of a new balloon guide catheter (BGC) in improving the degree of recanalization in conjunction with mechanical thrombectomy. Methods: The medical records of a prospectively collected endovascular ischemic stroke database were reviewed. All consecutive strokes when a FlowGate BGC was used with a thrombectomy stent retriever were identified. Use of a FlowGate BGC, number of passes, final Thrombolysis in Cerebral Infarction (TICI) score, trackability, and use of adjunct devices were all collected and analyzed. Results: Use of a FlowGate BGC resulted in 64% (33/52) first-pass effect (FPE) of TICI 2b/3, and specifically 46% (24/52) TICI 3 FPE (true FPE). A total of 52/62 (84%) of thrombectomy cases were treated with BGCs. In the remaining 10, the BGC was not inflated or used due to the clot not being visualized or the lesions being distal and BGC use thus not deemed appropriate. Adjunct use of an aspiration catheter was seen in 12% (6/52) of cases. The overall success with FlowGate BGCs with one or more passes of TICI 2b/3 was 94% (49/52). Trackability was achieved in 92% (57/62) of cases. Conclusions: Use of the FlowGate BGC as an adjunct to mechanical thrombectomy was associated with good FPE and an overall recanalization of TICI 2b/3 of 94%.

Implications of the use of mechanical thrombectomy on outcome in large vessel occlusion following the 2015 landmark trials

2020 ◽  
Vol 13 (1) ◽  
pp. 4-7
Author(s):  
Okkes Kuybu ◽  
Vijayakumar Javalkar ◽  
Abdallah Amireh ◽  
Arshpreet Kaur ◽  
Roger E Kelley ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Hospital Mortality ◽  
Acute Ischemic Stroke ◽  
Mechanical Thrombectomy ◽  
Intravenous Thrombolysis ◽  
Binary Logistic Regression ◽  
Standard Of Care ◽  
Vessel Occlusion ◽  
Stroke Treatment ◽  
Before And After

BackgroundThe effectiveness of mechanical thrombectomy (MT) was demonstrated in five landmark trials published in2015.Mechanical thrombectomy is now standard of care for acute ischemic stroke and has been growing in popularity after publication of landmark trials.ObjectiveTo analyze outcomes and trends of the use of MT and intravenous thrombolysis (IVT) in patients with acute ischemic stroke in US hospitals before and after publication of these trials.MethodsPatients discharged with a diagnosis of ischemic stroke between 2012 to 2017 were diagnosed using ICD codes from the National Inpatient Sample. Thereafter, patients given acute stroke treatment were identified using the corresponding procedure codes for IVT and MT. The primary clinical outcomes of in-hospital mortality and disability were then compared between two time periods: 2012–2014 (pre-landmark trials) and 2015–2017 (post-landmark trials). Binary logistic regression and Χ2 tests were used for statistical analysis.ResultsA total of 57 675 patients (median age 68.9 years (range 18-90), 50.1% female) were identified with acute procedures. Of these patients, 57.6% were from the post-landmark trials time period. Despite an increased number of cases, the rate of IVT decreased from 84.3% to 75.9% and the rate of IVT+MT decreased from 7.1% to 6.3%. After publication of the pivotal trials in 2015, the rates of MT increased from 8.7% to 17.8%. Significant reductions of in-hospital mortality (7.1% vs 8.7%, p<0.001) and disability (64% vs 66.2%, p<0.001) were noted.ConclusionThe analysis showed a significant increase in the proportion of patients receiving MT after 2015. This has translated into reduction of in-hospital mortality and improvement in disability.

Endovascular Treatment of Stroke

2018 ◽  
pp. 153-168
Author(s):  
Mandy J. Binning ◽  
Daniel R. Felbaum
Keyword(s):  
Ischemic Stroke ◽  
Endovascular Treatment ◽  
Acute Ischemic Stroke ◽  
Heart Association ◽  
Standard Of Care ◽  
Class I ◽  
Vessel Occlusion ◽  
Endovascular Thrombectomy ◽  
Stroke Treatment ◽  
Intravenous Alteplase

This chapter will review the main endovascular principles of ischemic stroke treatment. Endovascular therapy has been revolutionized by the advent of modern devices for thrombectomy. Class I evidence in multiple trials has proven that intravenous alteplase plus endovascular thrombectomy is superior to intravenous alteplase alone. The combination of these factors has advanced the standard of care for patients who present with acute ischemic stroke who are also found to have a large vessel occlusion and salvageable brain tissue. The chapter will include information based on recently concluded Class I trials and American Heart Association guidelines. The chapter will review available imaging, current guidelines, controversies surrounding endovascular thrombectomy, recent advances in thrombectomy devices, and recent management principles pertinent to the endovascular treatment of acute ischemic stroke. Cases will be presented regarding diagnosis, management, and treatment paradigms currently being practiced.

Revascularization and functional outcomes after mechanical thrombectomy for acute ischemic stroke in elderly patients

2020 ◽  
Vol 132 (4) ◽  
pp. 1182-1187 ◽  
Author(s):  
Carrie E. Andrews ◽  
Nikolaos Mouchtouris ◽  
Evan M. Fitchett ◽  
Fadi Al Saiegh ◽  
Michael J. Lang ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Elderly Patients ◽  
Acute Ischemic Stroke ◽  
Mechanical Thrombectomy ◽  
Multivariate Logistic Regression Analysis ◽  
Standard Of Care ◽  
Stroke Severity ◽  
Vessel Occlusion ◽  
Younger Patients ◽  
Success Of Treatment

OBJECTIVEMechanical thrombectomy (MT) is now the standard of care for acute ischemic stroke (AIS) secondary to large-vessel occlusion, but there remains a question of whether elderly patients benefit from this procedure to the same degree as the younger populations enrolled in the seminal trials on MT. The authors compared outcomes after MT of patients 80–89 and ≥ 90 years old with AIS to those of younger patients.METHODSThe authors retrospectively analyzed records of patients undergoing MT at their institution to examine stroke severity, comorbid conditions, medical management, recanalization results, and clinical outcomes. Univariate and multivariate logistic regression analysis were used to compare patients < 80 years, 80–89 years, and ≥ 90 years old.RESULTSAll groups had similar rates of comorbid disease and tissue plasminogen activator (tPA) administration, and stroke severity did not differ significantly between groups. Elderly patients had equivalent recanalization outcomes, with similar rates of readmission, 30-day mortality, and hospital-associated complications. These patients were more likely to have poor clinical outcome on discharge, as defined by a modified Rankin Scale (mRS) score of 3–6, but this difference was not significant when controlled for stroke severity, tPA administration, and recanalization results.CONCLUSIONSOctogenarians, nonagenarians, and centenarians with AIS have similar rates of mortality, hospital readmission, and hospital-associated complications as younger patients after MT. Elderly patients also have the capacity to achieve good functional outcome after MT, but this potential is moderated by stroke severity and success of treatment.

scholarly journals Cerebral endothelial cell-derived small extracellular vesicles enhance neurovascular function and neurological recovery in rat acute ischemic stroke models of mechanical thrombectomy and embolic stroke treatment with tPA

2021 ◽  
pp. 0271678X2199298
Author(s):  
Chao Li ◽  
Chunyang Wang ◽  
Yi Zhang ◽  
Owais K Alsrouji ◽  
Alex B Chebl ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Extracellular Vesicles ◽  
Mechanical Thrombectomy ◽  
Infarct Volume ◽  
Artery Occlusion ◽  
Therapeutic Effects ◽  
Vessel Occlusion ◽  
Healthy Human ◽  
Stroke Treatment

Treatment of patients with cerebral large vessel occlusion with thrombectomy and tissue plasminogen activator (tPA) leads to incomplete reperfusion. Using rat models of embolic and transient middle cerebral artery occlusion (eMCAO and tMCAO), we investigated the effect on stroke outcomes of small extracellular vesicles (sEVs) derived from rat cerebral endothelial cells (CEC-sEVs) in combination with tPA (CEC-sEVs/tPA) as a treatment of eMCAO and tMCAO in rat. The effect of sEVs derived from clots acquired from patients who had undergone mechanical thrombectomy on healthy human CEC permeability was also evaluated. CEC-sEVs/tPA administered 4 h after eMCAO reduced infarct volume by ∼36%, increased recanalization of the occluded MCA, enhanced cerebral blood flow (CBF), and reduced blood-brain barrier (BBB) leakage. Treatment with CEC-sEVs given upon reperfusion after 2 h tMCAO significantly reduced infarct volume by ∼43%, and neurological outcomes were improved in both CEC-sEVs treated models. CEC-sEVs/tPA reduced a network of microRNAs (miRs) and proteins that mediate thrombosis, coagulation, and inflammation. Patient-clot derived sEVs increased CEC permeability, which was reduced by CEC-sEVs. CEC-sEV mediated suppression of a network of pro-thrombotic, -coagulant, and -inflammatory miRs and proteins likely contribute to therapeutic effects. Thus, CEC-sEVs have a therapeutic effect on acute ischemic stroke by reducing neurovascular damage.

Abstract MP35: The American Heart Association’s Life’s Simple 7 and Mortality by Race and Sex in the U.S.: the REasons for Geographic And Racial Differences in Stroke (REGARDS) Cohort

Circulation ◽  
2014 ◽  
Vol 129 (suppl_1) ◽  
Author(s):  
Mary Cushman ◽  
Suzanne E Judd ◽  
Virginia J Howard ◽  
Neil A Zakai ◽  
Brett Kissela ◽  
...  
Keyword(s):  
Racial Differences ◽  
Mortality Risk ◽  
Lower Risk ◽  
Population Sample ◽  
White Men ◽  
The United States ◽  
Risk Of Death ◽  
Life’S Simple 7 ◽  
Life's Simple 7 ◽  
The Impact

Background: The Life’s Simple 7 (LSS) metric is being used by AHA to track the cardiovascular health of the United States population and move toward a 2020 impact goal for improvement. Levels of LSS are associated with mortality risk but there are limited data on whether this association differs by race or sex. Hypothesis: There will be sex and race differences in the association of LSS with mortality in the REGARDS cohort study. Methods: We studied 29,692 REGARDS participants; a population sample of black and white men and women aged 45-98 from across the US, enrolled in 2003-7. Extensive baseline risk factor data were measured in participants’ homes. The 7 LSS components (blood pressure, cholesterol, glucose, body-mass index, smoking, physical activity, diet) were each scored in AHA-defined categories of poor (0 points), intermediate (1 point) and ideal (2 points), and were summed to yield scores ranging from poor for all (0) to ideal for all (14). With 6.4 years follow up there were 3709 deaths. Results: The LSS score was normally distributed with mean (SD) of 7.9 (2.0) in whites and 6.9 (2.0) in blacks. The age, region, income and education adjusted hazard ratio (HR) of death for a 1-unit worse LSS score, stratified by race and sex, are shown in the table. Race and sex interactions were tested individually in separate models. While better scores for LSS were strongly associated with lower mortality, associations differed by race and sex, being weaker in blacks than whites and in men than women. Conclusion: There were large associations of LSS with mortality risk in the REGARDS national sample; 1 point difference in score, corresponding to movement from poor to intermediate or intermediate to ideal for 1 of the 7 factors, was associated with a 16% lower risk of death in white women, 14% lower risk in white men or black women, but only an 11% lower risk in black men. Observed differences in the association of LSS with mortality by race and sex should be considered in efforts to gauge the impact of LSS interventions on health disparities.

Impact of RapidAI mobile application on treatment times in patients with large vessel occlusion

2021 ◽  
pp. neurintsurg-2021-017365
Author(s):  
Mais Al-Kawaz ◽  
Christopher Primiani ◽  
Victor Urrutia ◽  
Ferdinand Hui
Keyword(s):  
Mobile Application ◽  
Secondary Analysis ◽  
Multiple Linear Regression Model ◽  
Stroke Care ◽  
Mobile App ◽  
Large Vessel ◽  
Vessel Occlusion ◽  
Comprehensive Stroke Center ◽  
Stroke Center ◽  
Adjusted Model

BackgroundCurrent efforts to reduce door to groin puncture time (DGPT) aim to optimize clinical outcomes in stroke patients with large vessel occlusions (LVOs). The RapidAI mobile application (Rapid Mobile App) provides quick access to perfusion and vessel imaging in patients with LVOs. We hypothesize that utilization of RapidAI mobile application can significantly reduce treatment times in stroke care by accelerating the process of mobilizing stroke clinicians and interventionalists.MethodsWe analyzed patients presenting with LVOs between June 2019 and October 2020. Thirty-one patients were treated between June 2019 and March 2020 (pre-app group). Thirty-three patients presented between March 2020 and October 2020 (post-app group). Mann–Whitney U test and Kruskal–Wallis tests were used to examine variables that are not normally distributed. In a secondary analysis we analyzed interhospital time metrics between primary stroke centers and our comprehensive stroke center.ResultsBaseline demographic and vascular risk factors were similar in both groups. Use of Rapid Mobile App resulted in 33 min reduction in DGPT (P=0.02), 35 min reduction in door to first pass time (P=0.02), and 37 min reduction in door to recanalization time (P=0.02) in univariate analyses when compared with patients treated pre-app. In a multiple linear regression model, utilization of Rapid Mobile App significantly predicted shorter DGPT (P=0.002). In an adjusted model, National Institutes of Health Stroke Scale (NIHSS) 24 hours after procedure and at discharge were significantly lower in the post-app group (P=0.03). Time of transfer between primary and comprehensive stroke center was comparable in both groups (P=0.26).ConclusionIn patients with LVOs, the implementation of the RapidAI mobile application was independently associated with reductions in intrahospital treatment times.

Abstract WP340: Prevalence and Influence of Chronic Obstructive Pulmonary Disease on Stroke Outcomes in Hospitalized Stroke Patients

Stroke ◽  
2016 ◽  
Vol 47 (suppl_1) ◽  
Author(s):  
Oladimeji Akinboro ◽  
Odunayo Olorunfemi ◽  
Stanley Holstein ◽  
Daniel Pomerantz ◽  
Stephen Jesmajian ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Hospital Mortality ◽  
The United States ◽  
Mortality Rates ◽  
Chronic Obstructive ◽  
Stroke Patients ◽  
Obstructive Pulmonary Disease ◽  
Index Stroke ◽  
Nationally Representative ◽  
Shared Risk

Background: COPD recently overtook stroke as the third leading cause of death in the United States. Intriguingly, smoking is an important shared risk factor for both stroke and COPD; COPD patients have baseline cerebral hypoxia and hypercapnia that could potentially exacerbate vascular brain injury; and stroke patients with COPD are at higher risk of aspiration than those without COPD. Yet, relatively little is known about the prevalence of COPD among stroke patients or its impact on outcomes after an index stroke. Objective: To assess prevalence of COPD among hospitalized stroke patients in a nationally representative sample and examine the effect of COPD with risk of dying in the hospital after a stroke. Methods: Data were obtained for patients, 18 years and older, from the National Inpatient Sample from 2004-2009 (n=48,087,002). Primary discharge diagnoses of stroke were identified using ICD-9 diagnosis codes 430-432 and 433-436, of which a subset with comorbid COPD were defined with secondary ICD-9 diagnoses codes 490-492, 494, and 496. In-hospital mortality rates were calculated, and independent associations of COPD with in-hospital mortality following stroke were evaluated with logistic regression. All analysis were survey-weighted. Results: 11.71% (95% CI 11.48-11.94) of all adult patients hospitalized for stroke had COPD. The crude and age-adjusted in-hospital mortality rates for these patients were 6.33% (95% CI 6.14-6.53) and 5.99% (95% CI 4.05-7.94), respectively. COPD was independently and modestly associated with overall stroke mortality (OR 1.03, 95% CI 1.01-1.06; p=0.02). However, when analyzed by subtype, greater risks of mortality were seen in those with intracerebral hemorrhage (OR 1.12, 95% CI 1.03-1.20; p<0.01), and ischemic stroke (OR 1.08; 95% CI 1.03-1.13, p<0.01), but not subarachnoid hemorrhage (OR 0.98, 95% CI 0.85-1.13; p=0.78). There were no statistically significant interactions between COPD and age, gender, or race. Conclusion: 12% of hospitalized stroke patients have COPD. Presence of COPD is independently associated with higher odds of dying during ischemic stroke hospitalization. Prospective studies are needed to identify any modifiable risk factors contributing to this deleterious relationship.

scholarly journals Repeated Mechanical Endovascular Thrombectomy for Recurrent Large Vessel Occlusion

Stroke ◽  
2021 ◽  
Author(s):  
Ghada A. Mohamed ◽  
Hassan Aboul Nour ◽  
Raul G. Nogueira ◽  
Mahmoud H. Mohammaden ◽  
Diogo C. Haussen ◽  
...  
Keyword(s):  
Scale Score ◽  
Standard Of Care ◽  
The United States ◽  
Outcome Data ◽  
Large Vessel ◽  
Time Interval ◽  
Modified Rankin Scale ◽  
Large Vessel Occlusion ◽  
Vessel Occlusion ◽  
Previously Treated

Background and Purpose: Mechanical thrombectomy (MT) is now the standard of care for large vessel occlusion (LVO) stroke. However, little is known about the frequency and outcomes of repeat MT (rMT) for patients with recurrent LVO. Methods: This is a retrospective multicenter cohort of patients who underwent rMT at 6 tertiary institutions in the United States between March 2016 and March 2020. Procedural, imaging, and outcome data were evaluated. Outcome at discharge was evaluated using the modified Rankin Scale. Results: Of 3059 patients treated with MT during the study period, 56 (1.8%) underwent at least 1 rMT. Fifty-four (96%) patients were analyzed; median age was 64 years. The median time interval between index MT and rMT was 2 days; 35 of 54 patients (65%) experienced recurrent LVO during the index hospitalization. The mechanism of stroke was cardioembolism in 30 patients (56%), intracranial atherosclerosis in 4 patients (7%), extracranial atherosclerosis in 2 patients (4%), and other causes in 18 patients (33%). A final TICI recanalization score of 2b or 3 was achieved in all 54 patients during index MT (100%) and in 51 of 54 patients (94%) during rMT. Thirty-two of 54 patients (59%) experienced recurrent LVO of a previously treated artery, mostly the pretreated left MCA (23 patients, 73%). Fifty of the 54 patients (93%) had a documented discharge modified Rankin Scale after rMT: 15 (30%) had minimal or no disability (modified Rankin Scale score ≤2), 25 (50%) had moderate to severe disability (modified Rankin Scale score 3–5), and 10 (20%) died. Conclusions: Almost 2% of patients treated with MT experience recurrent LVO, usually of a previously treated artery during the same hospitalization. Repeat MT seems to be safe and effective for attaining vessel recanalization, and good outcome can be expected in 30% of patients.

Abstract 19212: Racial Differences in Clinical Outcomes and Resource Utilization Associated With Heart Failure Hospitalizations in the United States: A Nationwide Analysis From 2011-2012

Circulation ◽  
2015 ◽  
Vol 132 (suppl_3) ◽  
Author(s):  
Nilay Kumar ◽  
Rohan Khera ◽  
Neetika Garg
Keyword(s):  
Heart Failure ◽  
Native Americans ◽  
Hospital Mortality ◽  
Racial Differences ◽  
Resource Utilization ◽  
The United States ◽  
Primary Diagnosis ◽  
Hospital Charges ◽  
Nationally Representative ◽  
Racial Ethnic

Background and objectives: Heart failure (HF) incidence is higher among Blacks compared to Whites. There is a paucity of recent data on racial differences in in-hospital mortality and resource utilization in a nationally representative, multiracial cohort of HF hospitalizations. Hypothesis: There are significant racial-ethnic differences in HF hospitalization outcomes. Methods: We used the 2011-2012 Nationwide/National Inpatient Sample to identify hospitalizations with a primary diagnosis of HF using relevant ICD-9 codes. Outcomes of interest were in-hospital mortality, length of stay (LOS) and mean inflation adjusted charges. The effect of race on outcomes was ascertained using logistic or linear regression. Results: 375,740 primary HF hospitalizations representing 1.8 million hospitalizations nationwide were included. Mean age was 72.6 (SD 14.6) years and 50.1% were females. After adjusting for age, sex, hypertension, diabetes, APR-DRG mortality risk and socioeconomic status, in-hospital mortality was significantly lower for Blacks (OR 0.69, 95% CI 0.64 - 0.74; p<0.001), Hispanics (OR 0.82, 95% CI 0.75 - 0.91; p<0.001) and Asians or Pacific Islanders (OR 0.85, 95% CI 0.73 - 0.99; p=0.04) compared to Whites. Average inflation adjusted charges were significantly higher for all minorities compared to Whites except for Native Americans for whom charges were significantly lower than Whites (p<0.05 for Black, Hispanic, Asian, NA or Others vs. Whites). LOS was modestly higher for Blacks or Other races vs. Whites (p=0.01 B vs. W and Others vs. W) and lower for Native Americans vs. Whites (p<0.001). Conclusions: Blacks, Hispanics and Asians hospitalized for HF are significantly less likely to die in the hospital compared to Whites. Hospital charges for racial-ethnic minorities are significantly higher compared to Whites. The reasons for racial differences in HF hospitalization outcomes require further investigation.

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