Publications by authors named "Jason Mackey"

Background And Objectives: Food deserts (FDs) are low-income areas with poor access to healthy foods. FD residents have higher rates of several cardiovascular risk factors, but the link between FDs and stroke has not been well studied. We evaluated whether FD residence was associated with incident ischemic stroke within the Greater Cincinnati/Northern Kentucky Stroke Study (GCNKSS) and whether this association was due to low income, poor food access, or both.

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BackgroundGood clinical outcomes following stroke thrombectomy have been associated with successful reperfusion following a single pass, often referred to as the first pass effect (FPE). Inherent in FPE is a potential association with rapid recanalization. It remains unclear if the benefit associated with FPE is an epiphenomenon rather than a meaningful metric to evaluate thrombectomy.

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Background: Limited data exist regarding differences in ischemic stroke care across the care continuum between patients with and without prestroke disability. We investigated differences in in-hospital and postdischarge ischemic stroke cause evaluation and treatment between patients with and without prestroke disability using population-based data in the United States.

Methods: We ascertained all adult patients (≥18 years) hospitalized with acute ischemic stroke within the Greater Cincinnati/Northern Kentucky population between January 1, 2015, and December 31, 2015.

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Article Synopsis
  • This study assesses the cost-effectiveness of mobile stroke units (MSUs) compared to standard emergency medical services (EMS) for administering thrombolytics in ischemic stroke patients.
  • The analysis used the incremental cost-effectiveness ratio (ICER) method to evaluate healthcare costs and quality-adjusted life years (QALYs), highlighting considerable variations based on patient disability status and treatment costs.
  • Overall, while MSUs show borderline cost-effectiveness for all eligible patients, they are more favorable for patients without pre-existing disabilities, particularly when focusing on lifetime costs and stroke-specific expenses.
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Article Synopsis
  • This study analyzed trends and racial disparities in 5-year mortality after stroke within a representative population in the Greater Cincinnati Northern Kentucky region, focusing on both acute ischemic strokes (AIS) and intracerebral hemorrhages (ICH).
  • Researchers examined data from 8,428 AIS cases and 1,501 ICH cases over several years, assessing factors like race, sex, premorbid functional status, and comorbidities using logistic regression analysis.
  • The findings indicated a significant improvement in 5-year mortality rates after AIS from 1993 to 2015, but Black individuals faced higher mortality risks, particularly among males with good baseline functional health, highlighting persistent racial disparities in stroke outcomes.
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Background: As stroke endovascular thrombectomy (EVT) treatment indications expand, understanding population-based EVT eligibility becomes critical for resource planning. We aimed to project current and future population-based EVT eligibility in the United States.

Methods: We conducted a post hoc analysis of the physician-adjudicated GCNKSS (Greater Cincinnati Northern Kentucky Stroke Study; 2015 epoch), a population-based, cross sectional, observational study of stroke incidence, treatment, and outcomes across a 5-county region.

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Background And Objectives: Poverty is associated with greater stroke incidence. The relationship between poverty and stroke recurrence is less clear.

Methods: In this population-based study, incident strokes within the Greater Cincinnati/Northern Kentucky region were ascertained during the 2015 study period and followed up for recurrence until December 31, 2018.

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Background: Hypertension is a stroke risk factor with known disparities in prevalence and management between Black and White patients. We sought to identify if racial differences in presenting blood pressure (BP) during acute ischemic stroke exist.

Methods And Results: Adults with acute ischemic stroke presenting to an emergency department within 24 hours of last known normal during study epochs 2005, 2010, and 2015 within the Greater Cincinnati/Northern Kentucky Stroke Study were included.

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Background And Objectives: Understanding the current status of and temporal trends of stroke epidemiology by age, race, and stroke subtype is critical to evaluate past prevention efforts and to plan future interventions to eliminate existing inequities. We investigated trends in stroke incidence and case fatality over a 22-year time period.

Methods: In this population-based stroke surveillance study, all cases of stroke in acute care hospitals within a 5-county population of southern Ohio/northern Kentucky in adults aged ≥20 years were ascertained during a full year every 5 years from 1993 to 2015.

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Background: Dysphagia after stroke is common and can impact morbidity and death. The purpose of this population-based study was to determine specific epidemiological and health risk factors that impact development of dysphagia after acute stroke.

Methods And Results: Ischemic and hemorrhagic stroke cases from 2010 and 2015 were identified via chart review from the GCNKSS (Greater Cincinnati Northern Kentucky Stroke Study), a representative sample of ≈1.

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Objective: This study was undertaken to examine averted stroke in optimized stroke systems.

Methods: This secondary analysis of a multicenter trial from 2014 to 2020 compared patients treated by mobile stroke unit (MSU) versus standard management. The analytical cohort consisted of participants with suspected stroke treated with intravenous thrombolysis.

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Background And Purpose: Dysphagia is a common post-stroke occurrence and has been shown to impact patients' morbidity and mortality. The purpose of this study was to use a large population-based dataset to determine specific epidemiological and patient health risk factors that impact development and severity of dysphagia after acute stroke.

Methods: Using data from the Greater Cincinnati Northern Kentucky Stroke Study, GCNKSS, involving a representative sample of approximately 1.

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Article Synopsis
  • The use of oral vitamin K antagonists (VKAs) may increase the risk of complications for patients undergoing endovascular thrombectomy (EVT) due to acute ischemic stroke from large vessel occlusion.
  • This study retrospectively analyzed data from over 32,000 patients to explore the relationship between recent VKA use and outcomes during EVT.
  • Results indicated that while overall prior VKA use was not linked to a significantly higher risk of symptomatic intracranial hemorrhage (sICH), patients with higher INR levels (above 1.7) faced a considerably increased risk compared to those not taking VKAs.
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Background: Few data exist on acute stroke treatment in patients with pre-existing disability (PD) since they are usually excluded from clinical trials. A recent trial of mobile stroke units (MSUs) demonstrated faster treatment and improved outcomes, and included PD patients.

Aim: To determine outcomes with tissue plasminogen activator (tPA), and benefit of MSU versus management by emergency medical services (EMS), for PD patients.

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Background: Our primary objective was to evaluate if disparities in race, sex, age, and socioeconomic status (SES) exist in utilization of advanced neuroimaging in year 2015 in a population-based study. Our secondary objective was to identify the disparity trends and overall imaging utilization as compared with years 2005 and 2010.

Methods: This was a retrospective, population-based study that utilized the GCNKSS (Greater Cincinnati/Northern Kentucky Stroke Study) data.

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Background And Objectives: There is a rising incidence of infective endocarditis-related stroke (IERS) in the United States attributed to the opioid epidemic. A contemporary epidemiologic description is necessary to understand the impact of the opioid epidemic on clinical characteristics of IERS. We describe and analyze trends in the demographics, risk factors, and clinical features of IERS.

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Background: Treatment of patients with acute ischemic stroke on mobile stroke units (MSUs) improves outcomes compared with management by standard emergency medical services ambulances and is associated with more patients treated with intravenous tPA (tissue-type plasminogen activator) in the first golden hour after last known normal. We explored the predictors and outcomes of first-hour treatment (FHT) compared with later treatment in an alternating-week cluster-controlled trial of MSUs.

Methods: We analyzed all patients treated with intravenous tPA in the BEST-MSU Study (Benefits of Stroke Treatment Delivered by a Mobile Stroke Unit Compared to Standard Management by Emergency Medical Services).

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Article Synopsis
  • Study reveals Black individuals in the U.S. have a higher risk of recurrent strokes, even though this risk diminishes when traditional risk factors like hypertension and diabetes are considered.* -
  • Analysis involved tracking nearly 3,816 stroke patients over three years, revealing a 3-year recurrence rate of 15.4%, particularly affecting younger Black individuals.* -
  • Although Black race initially appeared linked to higher recurrence rates, adjusting for traditional risk factors showed this association to be less significant, suggesting that addressing these factors could help reduce disparities.*
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Background: Though stroke risk factors such as substance use may vary with age, less is known about trends in substance use over time or about performance of toxicology screens in young adults with stroke.

Methods: Using the Greater Cincinnati Northern Kentucky Stroke Study, a population-based study in a 5-county region comprising 1.3 million people, we reported the frequency of documented substance use (cocaine/marijuana/opiates/other) obtained from electronic medical record review, overall and by race/gender subgroups among physician-adjudicated stroke events (ischemic and hemorrhagic) in adults 20 to 54 years of age.

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Background: There are limited data about the epidemiology and secondary stroke prevention strategies used for patients with depressed left ventricular ejection fraction (LVEF) and sinus rhythm following an acute ischemic stroke (AIS). We sought to describe the prevalence of LVEF ≤40% and sinus rhythm among patients with AIS and antithrombotic treatment practice in a multi-center cohort from 2002 to 2018.

Methods: This was a multi-center, retrospective cohort study comprised of patients with AIS hospitalized in the Greater Cincinnati Northern Kentucky Stroke Study and 4 academic, hospital-based cohorts in the United States.

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Background: Mobile stroke units (MSUs) are ambulances with staff and a computed tomographic scanner that may enable faster treatment with tissue plasminogen activator (t-PA) than standard management by emergency medical services (EMS). Whether and how much MSUs alter outcomes has not been extensively studied.

Methods: In an observational, prospective, multicenter, alternating-week trial, we assessed outcomes from MSU or EMS management within 4.

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Introduction: We sought to determine the feasibility and validity of estimating post-stroke outcomes using information available in the electronic medical record (EMR) through comparison with outcomes obtained from telephone interviews.

Methods: The Greater Cincinnati Northern Kentucky Stroke Study is a retrospective population-based epidemiology study that ascertains hospitalized strokes in the study region. As a sub-study, we identified all ischemic stroke patients who presented to a system of 4 hospitals during the study period 1/1/2015–12/31/2015 and were discharged alive.

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Background: The American Heart Association, in conjunction with the National Institutes of Health, annually reports the most up-to-date statistics related to heart disease, stroke, and cardiovascular risk factors, including core health behaviors (smoking, physical activity, diet, and weight) and health factors (cholesterol, blood pressure, and glucose control) that contribute to cardiovascular health. The Statistical Update presents the latest data on a range of major clinical heart and circulatory disease conditions (including stroke, congenital heart disease, rhythm disorders, subclinical atherosclerosis, coronary heart disease, heart failure, valvular disease, venous disease, and peripheral artery disease) and the associated outcomes (including quality of care, procedures, and economic costs).

Methods: The American Heart Association, through its Statistics Committee, continuously monitors and evaluates sources of data on heart disease and stroke in the United States to provide the most current information available in the annual Statistical Update.

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Most clinical research stopped during COVID due to possible impact on data quality and personnel safety. We aimed to assess the impact of COVID on acute stroke clinical trial conduct at sites that continued to enroll patients during the pandemic. BEST-MSU is an ongoing study of Mobile Stroke Units (MSU) vs standard management of tPA-eligible acute stroke patients in the pre-hospital setting.

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