Publications by authors named "Niki Oldenburg"

Background: Recent evidence indicates that abnormal P-wave parameters (PWPs)-ECG markers of atrial myopathy-are associated with incident dementia, independent of atrial fibrillation (AF) and clinical ischemic stroke. However, the mechanisms remain unclear and may include subclinical vascular brain injury. Hence, we evaluated the association of abnormal PWPs with brain MRI correlates of vascular brain injury in the Atherosclerosis Risk in Communities Neurocognitive Study (ARIC-NCS).

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Importance: Low-dose aspirin is used for primary prevention of cardiovascular disease in approximately one-third of the US adult population. Overuse and underuse are common and not concordant with guidelines.

Objective: To test a community and clinic education intervention to improve guideline-based aspirin use for the primary prevention of cardiovascular disease.

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Organized health promotion efforts sometimes compete with news media, social media, and other sources when providing recommendations for healthy behavior. In recent years, patients have faced a complicated information environment regarding aspirin use as a prevention tool for heart health. We explored the possibility that campaign promotion of low-dose aspirin use might have been undermined by news coverage in the USA detailing controversies regarding aspirin use.

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Background: USPSTF evidence-based recommendations for the use of low-dose aspirin for primary prevention of cardiovascular disease were published in 2009. We describe a statewide campaign using innovative methods to educate the public and health communities about appropriate aspirin use.

Methods/design: The "Ask About Aspirin" initiative is designed to lower the number of first heart attacks and strokes in the State of Minnesota by promoting the appropriate use of low dose aspirin.

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Article Synopsis
  • - Cardiovascular disease (CVD) is a major health issue for African Americans, leading to a study on the use of aspirin for primary prevention among this group, considering new guidelines and studies questioning its effectiveness.
  • - Researchers analyzed data from 1,491 African American adults (ages 45-79) over three years (2015, 2017, 2019) and found that aspirin use remained stable with no significant changes between genders.
  • - Belief in aspirin's effectiveness dropped from 84% in 2015 to 75% in 2019, but discussions with healthcare providers and perceived social expectations were strong factors associated with continued aspirin use.
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Cardiovascular disease prevention strategies include aspirin use as a preventive measure. The internet can be used to raise public awareness, promote healthy lifestyles, and improve disease management. This pilot study describes the feasibility of an educational website to recruit and follow adult internet users to examine whether they talked to their physician about aspirin and initiated aspirin use.

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Background: Premature atrial contractions (PACs) are associated with increased risk of atrial fibrillation (AF) and ischemic stroke. Although lifestyle and risk factor modification reduces AF incidence, their relationship to PACs frequency is unclear. We assessed the association of Life's Simple 7 (LS7) and individual LS7 factors in midlife with PACs frequency in late life in the Atherosclerosis Risk in Communities (ARIC) Study.

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Introduction: Daily aspirin use for primary cardiovascular disease prevention is common among adults. Numerous clinical trials observe reduced cardiovascular disease with regular low-dose aspirin. The U.

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Performance improvement on clinical quality outcomes typically requires significant effort by personnel in health care organizations. Understanding the cost of quality improvement is important given diffusion of value-based contracting. This study investigates the organizational costs and benefits associated with planning and implementing the Ask about Aspirin intervention to increase use of low-dose aspirin in clinically recommended patient populations.

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Cardiovascular disease (CVD) persists as the leading cause of death and disability in many Americans including Hispanics. Primary prevention for CVD may be achieved through regular aspirin use in high risk individuals. This study examined regular aspirin use and specific attitudes and social norms toward CVD and aspirin use within an urban Hispanic population in Minnesota.

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Background Abnormal P-wave indices (PWIs)-reflecting underlying left atrial abnormality-are associated with increased risk of stroke independent of atrial fibrillation. We assessed whether abnormal PWIs are associated with incident dementia and greater cognitive decline, independent of atrial fibrillation and ischemic stroke. Methods and Results We included 13 714 participants (mean age, 57±6 years; 56% women; 23% black) who were followed for dementia through the end of 2015.

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Background: Group-randomized trials of communities often rely on the convenience of pre-existing administrative divisions, such as school district boundaries or census entities, to divide the study area into intervention and control sites. However, these boundaries may include substantial heterogeneity between regions, introducing unmeasured confounding variables. This challenge can be addressed by the creation of exchangeable intervention and control territories that are equally weighted by pertinent socio-demographic characteristics.

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Cardiovascular disease (CVD) is a leading cause of morbidity and mortality in the United States, disproportionately affecting African Americans. Aspirin is an effective, low cost option to reduce cardiovascular events. This study sought to describe the use of aspirin for CVD prevention in African Americans and evaluate associations with demographics, cardiovascular risk factors and health behaviors and beliefs.

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Objective: To explore the relationship between gender, native artery diameters, and outcomes of stent revascularization (ST) in the "Claudication: Exercise versus Endoluminal Revascularization" trial.

Methods: A comparative analysis was performed of the impact of gender, age, weight, height, body mass index, and body surface area on revascularization outcomes at baseline and 6months in 55 arterial segments of aorta, common iliac artery, and external iliac artery (EIA).

Results: Women demonstrated smaller diameter of the EIA.

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Background: Tobacco use is an important preventable cause of peripheral artery disease (PAD) and a major determinant of adverse clinical outcomes.

Objectives: This study hypothesized that tobacco use by PAD patients would be associated with higher health care utilization and associated costs.

Methods: We conducted a retrospective, cross-sectional study using 2011 claims data from the largest Minnesota health plan.

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Background: Treatment for claudication that is due to aortoiliac peripheral artery disease (PAD) often relies on stent revascularization (ST). However, supervised exercise (SE) is known to provide comparable short-term (6-month) improvements in functional status and quality of life. Longer-term outcomes are not known.

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Administrative data have been used to identify patients with various diseases, yet no prior study has determined the utility of International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM)-based codes to identify CLI patients. CLI cases (n=126), adjudicated by a vascular specialist, were carefully defined and enrolled in a hospital registry. Controls were frequency matched to cases on age, sex and admission date in a 2:1 ratio.

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Background: Peripheral artery disease (PAD) is a major cause of cardiovascular ischemic events and amputation. Knowledge gaps exist in defining and measuring key factors that predict these events. The objective of this study was to assess whether duration of limb ischemia would serve as a major predictor of limb and patient survival.

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Introduction: Cardiovascular diseases are the leading causes of disability and death in the United States. Primary prevention of these events may be achieved through aspirin use. The ability of a community-based intervention to increase aspirin use has not been evaluated.

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Background: Advanced lower extremity peripheral artery disease (PAD), whether presenting as acute limb ischemia (ALI) or chronic critical limb ischemia (CLI), is associated with high rates of cardiovascular ischemic events, amputation, and death. Past research has focused on strategies of revascularization, but few data are available that prospectively evaluate the impact of key process of care factors (spanning pre-admission, acute hospitalization, and post-discharge) that might contribute to improving short and long-term health outcomes.

Methods/design: The FRIENDS registry is designed to prospectively evaluate a range of patient and health system care delivery factors that might serve as future targets for efforts to improve limb and systemic outcomes for patients with ALI or CLI.

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Purpose: To examine the relationship between objective treadmill test outcomes and subjective symptom outcomes among patients with claudication treated with stent revascularization (ST) compared with supervised exercise (SE).

Materials And Methods: Five scales of the Peripheral Artery Questionnaire and Walking Impairment Questionnaire were correlated with peak walking time and treadmill claudication onset time.

Results: The correlation between change in disease-specific quality of life (QOL) and change in peak walking time differed according to treatment group, with statistically significant correlations for all five scales for the ST group and weaker trends for the SE group, only one of which was statistically significant.

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Aspirin (ASA) is recommended for the prevention of cardiovascular disease; however, the compliance is low. Reported use may not reflect actual use. Serum thromboxane B2 (STxB2) measurement was evaluated to validate reported ASA use.

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Background: Claudication is a common and disabling symptom of peripheral artery disease that can be treated with medication, supervised exercise (SE), or stent revascularization (ST).

Methods And Results: We randomly assigned 111 patients with aortoiliac peripheral artery disease to receive 1 of 3 treatments: optimal medical care (OMC), OMC plus SE, or OMC plus ST. The primary end point was the change in peak walking time on a graded treadmill test at 6 months compared with baseline.

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Introduction: Critical limb ischemia (CLI) is the most severe manifestation of peripheral artery disease (PAD), is associated with high rates of myocardial infarction, stroke, and amputation, and has a high health economic cost. The objective of this study was to estimate the incidence of lower limb amputation, the most serious consequence of CLI, and to create a surveillance methodology for the incidence of ischemic amputation in Minnesota.

Methods: We assessed the incidence of ischemic amputation using all inpatient hospital discharge claims in Minnesota from 2005 through 2008.

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