Journal articleSleep Med · October 2026
Obstructive sleep apnea (OSA) severity varies by sleep position and sex; however, it is unknown whether these factors affect hypoglossal nerve stimulation (HGNS) treatment effectiveness. Thus, this study evaluates HGNS control of OSA by sleep position and ...
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Journal articleNeurol Clin Pract · April 2026
BACKGROUND AND OBJECTIVES: CT angiography of the head and neck (CTAHN) is commonly obtained in the emergency department (ED) for patients with acute neurologic symptoms to guide interventions. There are limited data on which clinical characteristics predic ...
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Journal articleLancet · March 21, 2026
BACKGROUND: Increased fluid intake is universally recommended to decrease the risk of recurrent urinary stones; however, adherence is challenging. The effectiveness of interventions to maintain high fluid intake has not been well studied. We sought to dete ...
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Journal articleUrology · March 2026
OBJECTIVE: To compare patient-reported stent-associated symptoms (SAS) after first- and second-stage unilateral ureteroscopy with ureteral stent placement for treatment of urinary stones. METHODS: Participants enrolled in the Study to Enhance Understanding ...
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Journal articleUrology · January 2026
OBJECTIVE: To assess and compare stent-associated symptoms after unilateral vs bilateral ureteroscopy with ureteral stent placement for stone treatment. METHODS: Participants enrolled in the Study to Enhance Understanding of Stent-Associated Symptoms (STEN ...
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Journal articleBJU Int · October 2025
OBJECTIVES: To expand understanding of the patient experience after ureteroscopy with stent placement for ureteric and/or renal stones using a body map to identify pain location and site-specific pain intensity over time, while evaluating the associations ...
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Journal articleMuscle Nerve · October 2025
INTRODUCTION/AIMS: Patients with myasthenia gravis (MG) often receive immunosuppressive treatments. While approved COVID-19 vaccines effectively prevent severe infections, the impact of vaccination among immunocompromised MG patients remains unclear. This ...
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Journal articleAm J Prev Cardiol · September 2025
BACKGROUND: Antihyperglycemic agents with cardiovascular (CV) benefits, including SGLT-2i and GLP-1RA, are underused in clinical practice, particularly by cardiologists. Understanding the prescribing patterns of these agents by cardiologists may aid in imp ...
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Journal articleJ Endourol · September 2025
Introduction and Objective: Kidney stone growth and new stone formation are common clinical trial endpoints and are associated with future symptomatic events. To date, a manual review of CT scans has been required to assess stone growth and new stone forma ...
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Journal articleJ Endourol · August 2025
Background: Urinary stone disease (USD) often necessitates ureteroscopy with ureteral stenting. We assessed the frequency and risk factors associated with unplanned health care utilization related to ureteroscopy with ureteral stenting within 30 postoperat ...
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Journal articleStroke · July 2025
BACKGROUND: Poststroke cognitive impairment is associated with disability and decreased quality of life. We assessed whether individual or collective magnetic resonance imaging (MRI) biomarkers can aid in predicting cognitive impairment after lacunar infar ...
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Journal articleJ Urol · April 2025
PURPOSE: We developed prediction models for severe pain and urinary symptoms after ureteroscopy with ureteral stent placement. MATERIALS AND METHODS: The development cohort included 424 adults and adolescents enrolled in the multicenter STENTS prospective ...
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Journal articleAm Heart J · April 2025
BACKGROUND: SGLT-2i and GLP-1RA are recommended for persons with type 2 diabetes and atherosclerotic cardiovascular disease (ASCVD); for those prescribed, little is known about reasons for discontinuation. METHODS: From the COORDINATE-Diabetes randomized t ...
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Journal articleBrain Stimul · 2025
BACKGROUND: Writer's cramp (WC) dystonia is an involuntary movement disorder with distributed abnormalities in the brain's motor network. Prior studies established the potential for repetitive transcranial magnetic stimulation (rTMS) to either premotor cor ...
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Journal articleJ Am Heart Assoc · December 17, 2024
BACKGROUND: Significant gap remains in the implementation of guideline-directed medical therapy (GDMT) in patients with heart failure after a hospitalization. We aimed to evaluate the use and titration of GDMT at discharge and over a 12-month period after ...
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Journal articleCHEST Crit Care · December 2024
BACKGROUND: Coronavirus disease 2019 (COVID-19) pneumonia requires considerable healthcare resources. RESEARCH OBJECTIVE: Examine if a single dose of infliximab or abatacept, in addition to remdesivir and steroids, decreased resource utilization among part ...
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Journal articleUrology · December 2024
OBJECTIVE: To assess accuracy of self-reported stone events in a large clinical trial by adjudication against the weight of documentation for spontaneous stone passage or surgical intervention. METHODS: Participants in the Prevention of Urinary Stones with ...
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Journal articleJ Card Fail · November 2024
BACKGROUND: Randomized controlled trials typically require study-specific visits, which can burden participants and sites. Remote follow-up, such as centralized call centers for participant-reported or site-reported, holds promise for reducing costs and en ...
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Journal articleAm Heart J · November 2024
Out-of-hospital cardiac arrest (OHCA) occurs in nearly 350,000 people each year in the United States (US). Despite advances in pre and in-hospital care, OHCA survival remains low and is highly variable across systems and regions. The critical barrier to im ...
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Journal articleClin Neurol Neurosurg · November 2024
INTRODUCTION: Migraine is an established risk factor for cerebral ischemic stroke, with an especially robust association in patients with migraine with aura. However, it is not known if migraine is a risk factor for retinal stroke (central or branch retina ...
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Journal articleCirculation · July 16, 2024
BACKGROUND: Results from the COORDINATE-Diabetes trial (Coordinating Cardiology Clinics Randomized Trial of Interventions to Improve Outcomes - Diabetes) demonstrated that a multifaceted, clinic-based intervention increased prescription of evidence-based m ...
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Journal articleBMC Nephrol · May 28, 2024
BACKGROUND: Structured Problem Solving (SPS) is a patient-centered approach to promoting behavior change that relies on productive collaboration between coaches and participants and reinforces participant autonomy. We aimed to describe the design, implemen ...
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Journal articleJ Stroke Cerebrovasc Dis · May 2024
OBJECTIVES: We sought to examine the frequency of depression after small vessel-type stroke (SVS) and associated risk factors. MATERIALS AND METHODS: We conducted a retrospective analysis of a prospective cohort of patients enrolled in the American Stroke ...
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Journal articleCirc Arrhythm Electrophysiol · May 2024
BACKGROUND: Clinically detected atrial fibrillation (AF) is associated with a significant increase in mortality and other adverse cardiovascular events. Since the advent of effective methods for AF rhythm control, investigators have attempted to determine ...
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Journal articleAm Heart J · April 2024
BACKGROUND: The finding of unexpected variations in treatment benefits by geographic region in international clinical trials raises complex questions about the interpretation and generalizability of trial findings. We observed such geographical variations ...
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Journal articleUrology · February 2024
OBJECTIVE: To examine the relationships between preoperative hypersensitivity to pain and central sensitization, and postoperative ureteral stent pain after ureteroscopy (URS) for urinary stones. METHODS: Adults enrolled in the STudy to Enhance uNderstandi ...
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Journal articleEuropace · December 6, 2023
AIMS: Left atrial catheter ablation is well established in patients with symptomatic atrial fibrillation (AF) but associated with risk of embolism to the brain. The present analysis aims to assess the impact of diffusion-weighted imaging (DWI) slice thickn ...
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Journal articleJAMA Cardiol · October 1, 2023
IMPORTANCE: Trials showing equivalent or better outcomes with initial evaluation using coronary computed tomography angiography (cCTA) compared with stress testing in patients with stable chest pain have informed guidelines but raise questions about overte ...
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Journal articleJAMA Cardiol · October 1, 2023
IMPORTANCE: Guidelines recommend deferral of testing for symptomatic people with suspected coronary artery disease (CAD) and low pretest probability. To our knowledge, no randomized trial has prospectively evaluated such a strategy. OBJECTIVE: To assess pr ...
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Journal articleUrology · August 2023
OBJECTIVE: To describe the experiences of patients undergoing stent removal in the USDRN Study to Enhance Understanding of Stent-Associated Symptoms (STENTS), a prospective, observational cohort study of patients with short-term ureteral stent placement po ...
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Journal articleJAMA · July 25, 2023
IMPORTANCE: Immune dysregulation contributes to poorer outcomes in COVID-19. OBJECTIVE: To investigate whether abatacept, cenicriviroc, or infliximab provides benefit when added to standard care for COVID-19 pneumonia. DESIGN, SETTING, AND PARTICIPANTS: Ra ...
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Journal articleAm Heart J · July 2023
Current guidelines recommend a deferred testing approach in low-risk patients presenting with stable chest pain. After simulating a deferred testing approach using the PROMISE Minimal Risk Score to identify 915 minimal risk participants with cost data from ...
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Journal articleNEJM Evid · July 2023
BACKGROUND: Vitamin K antagonists are the only oral anticoagulants approved to prevent valve thrombosis and valve-related thromboembolism in patients with mechanical heart valves. Whether patients with an On-X mechanical aortic valve can be safely anticoag ...
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Journal articleJ Endourol · June 2023
Purpose: Ureteral stents are commonly used after ureteroscopy and cause significant discomfort, yet qualitative perspectives on patients' stent experiences remain unknown. We describe psychological, functional, and interpersonal effects of post-ureteroscop ...
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Journal articleJ Urol · May 2023
PURPOSE: The STudy to Enhance uNderstanding of sTent-associated Symptoms sought to identify risk factors for pain and urinary symptoms, as well as how these symptoms interfere with daily activities after ureteroscopy for stone treatment. MATERIALS AND METH ...
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Journal articleJAMA · April 18, 2023
IMPORTANCE: Evidence-based therapies to reduce atherosclerotic cardiovascular disease risk in adults with type 2 diabetes are underused in clinical practice. OBJECTIVE: To assess the effect of a coordinated, multifaceted intervention of assessment, educati ...
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Journal articleStroke · April 2023
BACKGROUND: Carotid stenosis is thought to be the primary risk factor for central retinal artery occlusion (CRAO); however, it is not known whether atrial fibrillation (AF)-a cardiac arrhythmia that underlies over 25% of cerebral ischemic strokes-predispos ...
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Journal articleJ Am Heart Assoc · February 7, 2023
Background Women with atrial fibrillation (AF) demonstrate more AF-related symptoms and worse quality of life (QOL). Whether increased use of ablation in women reduces sex-related QOL differences is unknown. Sex-related outcomes for ablation versus drug th ...
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Journal articleAm Heart J · February 2023
Several medications that are proven to reduce cardiovascular events exist for individuals with type 2 diabetes mellitus (T2DM) and atherosclerotic cardiovascular disease, however they are substantially underused in clinical practice. Clinician, patient, an ...
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Journal articleMov Disord · January 2023
BACKGROUND: Writer's cramp (WC) dystonia is a rare disease that causes abnormal postures during the writing task. Successful research studies for WC and other forms of dystonia are contingent on identifying sensitive and specific measures that relate to th ...
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Journal articleCirculation · December 6, 2022
BACKGROUND: There are no randomized data evaluating the safety or efficacy of apixaban for stroke prevention in patients with end-stage kidney disease on hemodialysis and with atrial fibrillation (AF). METHODS: The RENAL-AF trial (Renal Hemodialysis Patien ...
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Journal articleJ Thorac Cardiovasc Surg · December 2022
OBJECTIVES: Optimal medical therapy in patients with heart failure and coronary artery disease is associated with improved outcomes. However, whether this association is influenced by the performance of coronary artery bypass grafting is less well establis ...
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Journal articleEuropace · October 13, 2022
AIMS: Influence of atrial fibrillation (AF) type on outcomes seen with catheter ablation vs. drug therapy is incompletely understood. This study assesses the impact of AF type on treatment outcomes in the Catheter Ablation vs. Antiarrhythmic Drug Therapy f ...
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Journal articleJ Card Fail · October 2022
BACKGROUND: It is unknown whether digital applications can improve guideline-directed medical therapy (GDMT) and outcomes in heart failure with reduced ejection fraction (HFrEF). METHODS AND RESULTS: Care Optimization Through Patient and Hospital Engagemen ...
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Journal articlemedRxiv · September 26, 2022
BACKGROUND: We investigated whether abatacept, a selective costimulation modulator, provides additional benefit when added to standard-of-care for patients hospitalized with Covid-19. METHODS: We conducted a master protocol to investigate immunomodulators ...
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Journal articleCirculation · August 16, 2022
BACKGROUND: In the CABANA trial (Catheter Ablation vs Antiarrhythmic Drug Therapy for Atrial Fibrillation), catheter ablation did not significantly reduce the primary end point of death, disabling stroke, serious bleeding, or cardiac arrest compared with d ...
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Journal articleJ Card Fail · August 2022
BACKGROUND: Health system-level interventions to improve use of guideline-directed medical therapy (GDMT) often fail in the acute care setting. We sought to identify factors associated with high performance in adoption of GDMT among health systems in CONNE ...
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Journal articleMov Disord · July 2022
BACKGROUND: Pathogenic leucine-rich repeat kinase 2 LRRK2 mutations may increase LRRK2 kinase activity and Rab substrate phosphorylation. Genetic association studies link variation in LRRK2 to idiopathic Parkinson disease (iPD) risk. OBJECTIVES: Through me ...
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Journal articleJAMA Netw Open · May 2, 2022
IMPORTANCE: Only about half of patients with atrial fibrillation (AF) who are at increased risk for stroke are treated with an oral anticoagulant (OAC), despite guideline recommendations for their use. Educating patients with AF about prevention of stroke ...
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Journal articleBMC Urol · April 6, 2022
BACKGROUND: Our objective was to describe day-to-day evolution and variations in patient-reported stent-associated symptoms (SAS) in the STudy to Enhance uNderstanding of sTent-associated Symptoms (STENTS), a prospective multicenter observational cohort st ...
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Journal articleCirculation · March 22, 2022
BACKGROUND: We aimed to assess the prevalence of ischemic brain lesions detected by magnetic resonance imaging and their association with cognitive function 3 months after first-time ablation using continuous oral anticoagulation in patients with paroxysma ...
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Journal articleCirculation · March 15, 2022
BACKGROUND: Observational data suggest that catheter ablation may be safe and effective to treat younger and older patients with atrial fibrillation. No large, randomized trial has examined this issue. This report describes outcomes according to age at ent ...
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Journal articleCirculation · March 15, 2022
BACKGROUND: The STICH Randomized Clinical Trial (Surgical Treatment for Ischemic Heart Failure) demonstrated that coronary artery bypass grafting (CABG) reduced all-cause mortality rates out to 10 years compared with medical therapy alone (MED) in patients ...
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Journal articleAnn Thorac Surg · March 2022
BACKGROUND: There is clinical equipoise regarding the perioperative and long-term outcomes of autoimmune myasthenia gravis (MG) patients undergoing open vs minimally invasive thymectomy, particularly for nonthymomatous MG. This analysis utilizes multicente ...
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Journal articleAm Heart J · March 2022
BACKGROUND: Clinicians vary widely in their preferred diagnostic approach to patients with non-acute chest pain. Such variation exposes patients to potentially avoidable risks, as well as inefficient care with increased costs and unresolved patient concern ...
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Journal articleJ Thorac Cardiovasc Surg · February 2022
OBJECTIVE: Chronic kidney disease is a known risk factor in cardiovascular disease, but its influence on treatment effect of bypass surgery remains unclear. We assessed the influence of chronic kidney disease on 10-year mortality and cardiovascular outcome ...
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Journal articleJAMA Netw Open · February 1, 2022
IMPORTANCE: Based on contemporary estimates in the US, evidence-based therapies for cardiovascular risk reduction are generally underused among patients with type 2 diabetes and atherosclerotic cardiovascular disease (ASCVD). OBJECTIVE: To determine the us ...
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Journal articleJAMA · July 27, 2021
IMPORTANCE: Adoption of guideline-directed medical therapy for patients with heart failure is variable. Interventions to improve guideline-directed medical therapy have failed to consistently achieve target metrics, and limited data exist to inform efforts ...
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Journal articleJ Am Coll Cardiol · July 13, 2021
BACKGROUND: Rhythm control strategies for atrial fibrillation (AF), including catheter ablation, are substantially underused in racial/ethnic minorities in North America. OBJECTIVES: This study sought to describe outcomes in the CABANA trial as a function ...
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Journal articleCirculation · July 6, 2021
Multiple sodium glucose cotransporter-2 inhibitors (SGLT-2i) and glucagon-like peptide-1 receptor agonists (GLP-1RA) have been shown to impart significant cardiovascular and kidney benefits, but are underused in clinical practice. Both SGLT-2i and GLP-1RA ...
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Journal articleJ Endourol · June 2021
Background: Ureteral stents are commonly employed after ureteroscopy to treat urinary stone disease, but the devices impose a substantial burden of stent-associated symptoms (SAS), including pain and urinary side effects. The NIDDK (National Institute of D ...
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Journal articleAm J Kidney Dis · June 2021
RATIONALE & OBJECTIVE: Although maintaining high fluid intake is an effective low-risk intervention for the secondary prevention of urinary stone disease, many patients with stones do not increase their fluid intake. STUDY DESIGN: We describe the rationale ...
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Journal articleCirculation · April 6, 2021
BACKGROUND: In patients with heart failure and atrial fibrillation (AF), several clinical trials have reported improved outcomes, including freedom from AF recurrence, quality of life, and survival, with catheter ablation. This article describes the treatm ...
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Journal articleCirculation · February 16, 2021
BACKGROUND: Among patients with atrial fibrillation (AF), women are less likely to receive catheter ablation and may have more complications and less durable results. Most information about sex-specific differences after ablation comes from observational d ...
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Journal articleJournal of Statistical Computation and Simulation · January 1, 2021
Multi-type recurrent events are often encountered in medical applications when two or more different event types could repeatedly occur over an observation period. For example, patients may experience recurrences of multi-type nonmelanoma skin cancers in a ...
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Journal articleHeart · December 2020
OBJECTIVE: To investigate changes in quality of life (QoL), cognition and functional status according to arrhythmia recurrence after atrial fibrillation (AF) ablation. METHODS: We compared QoL, cognition and functional status in patients with recurrent atr ...
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Journal articleAm Heart J · November 2020
BACKGROUND: Many studies showing underuse of oral anticoagulants (OACs) in patients with atrial fibrillation (AF) predated the advent of the non-vitamin K antagonist OACs. We retrospectively examined use of OACs in a large commercially insured population. ...
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Journal articleCirc Cardiovasc Qual Outcomes · November 2020
BACKGROUND: Peripheral artery disease is common and associated with high mortality. There are limited data detailing causes of death among patients with peripheral artery disease. METHODS: EUCLID (Examining Use of Ticagrelor in Peripheral Artery Disease) w ...
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Journal articleEuropace · September 1, 2020
AIMS: Freedom from atrial fibrillation (AF) at 1 year can be achieved in 50-70% of patients undergoing catheter ablation. Recurrent AF early after ablation most commonly terminates spontaneously without further interventional treatment but is associated wi ...
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Journal articleClin Trials · August 2020
IMPACT-AFib was an 80,000-patient randomized clinical trial implemented by five US insurance companies (health plans) aimed at increasing the use of oral anticoagulants by individuals with atrial fibrillation who were at high risk of stroke and not on trea ...
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Journal articleEuropace · July 1, 2020
AIMS: Study sex-differences in efficacy and safety of atrial fibrillation (AF) ablation. METHODS AND RESULTS: We assessed first AF ablation outcomes on continuous anticoagulation in 633 patients [209 (33%) women and 424 (67%) men] in a pre-specified subgro ...
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Journal articleCirc Cardiovasc Qual Outcomes · July 2020
BACKGROUND: Catheterization laboratory (cath lab) activation time is a newly available process measure for patients with ST-segment-elevation myocardial infarction requiring inter-hospital transfers for primary percutaneous coronary intervention that refle ...
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Journal articleJ Am Coll Cardiol · June 30, 2020
BACKGROUND: The CABANA (Catheter Ablation Versus Antiarrhythmic Drug Therapy for Atrial Fibrillation) trial randomized 2,204 patients with atrial fibrillation (AF) to catheter ablation or drug therapy. Analysis by intention-to-treat showed a nonsignificant ...
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Journal articleAm Heart J · May 2020
BACKGROUND: The evolution and clinical impact of cardiac remodeling after large ST-elevation myocardial infarction (STEMI) is not well delineated in the current therapeutic era. METHODS: The PRESERVATION I trial longitudinally assessed cardiac structure an ...
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Journal articleAm Heart J · February 2020
Many therapies have been shown to improve outcomes for patients with heart failure (HF) in controlled settings, but there are limited data available to inform best practices for hospital and post-discharge quality improvement initiatives. The CONNECT-HF st ...
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Journal articleAm Heart J · December 2019
Advanced age is directly related to worse outcomes following ST-elevation myocardial infarction (STEMI) and higher complication rates from antithrombotic therapies and primary percutaneous coronary intervention (PCI). Often excluded from clinical trials, s ...
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Journal articleJACC Heart Fail · October 2019
OBJECTIVES: The authors investigated the impact of coronary artery bypass grafting (CABG) on first and recurrent hospitalization in this population. BACKGROUND: In the STICH (Surgical Treatment for Ischemic Heart Failure) trial, CABG reduced all-cause deat ...
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Journal articleInt J Cardiol · September 15, 2019
BACKGROUND: The STICH trial showed superiority of coronary artery bypass plus medical treatment (CABG) over medical treatment alone (MED) in patients with left ventricular ejection fraction (LVEF) ≤35%. In previous publications, percutaneous coronary inter ...
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Journal articleN Engl J Med · August 22, 2019
BACKGROUND: The role of assessment of myocardial viability in identifying patients with ischemic cardiomyopathy who might benefit from surgical revascularization remains controversial. Furthermore, although improvement in left ventricular function is one o ...
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Journal articleJAMA · April 2, 2019
IMPORTANCE: Catheter ablation is effective in restoring sinus rhythm in atrial fibrillation (AF), but its effects on long-term mortality and stroke risk are uncertain. OBJECTIVE: To determine whether catheter ablation is more effective than conventional me ...
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Journal articleJ Am Coll Cardiol · March 5, 2019
BACKGROUND: The optimal noninvasive test (NIT) for patients with diabetes and stable symptoms of coronary artery disease (CAD) is unknown. OBJECTIVES: The purpose of this study was to assess whether a diagnostic strategy based on coronary computed tomograp ...
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Journal articleEur J Heart Fail · March 2019
AIMS: The landmark STICH trial found that surgical revascularization compared to medical therapy alone improved survival in patients with heart failure (HF) of ischaemic aetiology and an ejection fraction (EF) ≤ 35%. However, the interaction between the bu ...
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Journal articleClin Trials · February 2019
BACKGROUND: The US Food and Drug Administration's Sentinel Initiative is well positioned to support pragmatic clinical trials. FDA-Catalyst combines direct contact with health plan members and/or providers with data in the Sentinel infrastructure. Here, we ...
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Journal articleCirc Heart Fail · November 2018
BACKGROUND: The STICH trial (Surgical Treatment for Ischemic Heart Failure) demonstrated a survival benefit of coronary artery bypass grafting in patients with ischemic cardiomyopathy and left ventricular dysfunction. The Society of Thoracic Surgeons (STS) ...
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Journal articleJACC Cardiovasc Interv · September 24, 2018
OBJECTIVES: This study sought to examine whether quality improvement initiatives across multiple ST-segment elevation myocardial infarction (STEMI) systems translated to faster first medical contact (FMC)-to-device times for patients presenting with cardio ...
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Journal articleEur Heart J · August 21, 2018
AIMS: It is recommended to perform atrial fibrillation ablation with continuous anticoagulation. Continuous apixaban has not been tested. METHODS AND RESULTS: We compared continuous apixaban (5 mg b.i.d.) to vitamin K antagonists (VKA, international normal ...
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Journal articleJAMA Netw Open · August 3, 2018
IMPORTANCE: Clinical decisions are frequently based on measurement of left ventricular ejection fraction (LVEF). Limited information exists regarding inconsistencies in LVEF measurements when determined by various imaging modalities and the potential impac ...
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Journal articleEur Heart J · July 7, 2018
AIMS: Harmonized Assessment by Randomized Multicentre Study of OrbusNEich's Combo StEnt (HARMONEE) (NCT02073565) was a randomized pivotal registration trial of the Combo stent, which combined sirolimus and an abluminal bioabsorbable polymer with a novel en ...
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Journal articleJ Cardiothorac Vasc Anesth · June 2018
OBJECTIVE: The authors aimed to assess determinants of intubation time and evaluate its impact on 30-day and 1-year postoperative survival in Surgical Treatment for Ischemic Heart Failure (STICH) trial patients. DESIGN, SETTING, PARTICIPANTS, AND INTERVENT ...
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Journal articleAm Heart J · May 2018
BACKGROUND: Few therapies are available for the safe and effective treatment of atrial fibrillation (AF) in patients with heart failure. Bucindolol is a non-selective beta-blocker with mild vasodilator activity previously found to have accentuated antiarrh ...
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Journal articleAm Heart J · May 2018
The Catheter Ablation Versus Anti-arrhythmic Drug Therapy for Atrial Fibrillation (CABANA,NCT00911508)(1) trial is testing the hypothesis that the treatment strategy of percutaneous left atrial catheter ablation for the purpose of eliminating atrial fibril ...
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Journal articleCirculation · January 23, 2018
BACKGROUND: Regional variations in reperfusion times and mortality in patients with ST-segment-elevation myocardial infarction are influenced by differences in coordinating care between emergency medical services (EMS) and hospitals. Building on the Accele ...
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Journal articleJACC Cardiovasc Imaging · January 2018
OBJECTIVES: This study sought to determine updated conversion factors (k-factors) that would enable accurate estimation of radiation effective dose (ED) for coronary computed tomography angiography (CTA) and calcium scoring performed on 12 contemporary sca ...
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Journal articleOpen Heart · 2018
BACKGROUND: In patients with ischaemic left ventricular dysfunction, coronary artery bypass surgery (CABG) may decrease mortality, but it is not known whether CABG improves functional capacity. OBJECTIVE: To determine whether CABG compared with medical the ...
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Journal articleJ Am Heart Assoc · October 31, 2017
BACKGROUND: The impact of diabetes mellitus on the clinical presentation and noninvasive test (NIT) results among stable outpatients presenting with symptoms suggestive of coronary artery disease (CAD) has not been well described. METHODS AND RESULTS: The ...
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Journal articleJ Am Heart Assoc · October 24, 2017
BACKGROUND: The American Heart Association Mission: Lifeline STEMI (ST-segment-elevation myocardial infarction) Systems Accelerator program, conducted in 16 regions across the United States to improve key care processes, resulted in more patients being tre ...
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Journal articleLancet · October 14, 2017
BACKGROUND: Oral anticoagulation is underused in patients with atrial fibrillation. We assessed the impact of a multifaceted educational intervention, versus usual care, on oral anticoagulant use in patients with atrial fibrillation. METHODS: This study wa ...
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Journal articleJ Am Heart Assoc · October 11, 2017
BACKGROUND: Patients with ST-elevation myocardial infarction (STEMI) with out-of-hospital cardiac arrest (OHCA) may benefit from direct transport to a percutaneous cardiac intervention (PCI) hospital but have previously been less likely to bypass local non ...
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Journal articleAm Heart J · October 2017
UNLABELLED: Atrial fibrillation (AF) is the most common sustained arrhythmia worldwide. However, there are few contemporary comparative data on AF from middle-income countries. METHODS: Baseline characteristics of the IMPACT-AF trial were analyzed to asses ...
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Journal articleHeart · September 2017
OBJECTIVES: To define the prognostic contribution of global and regional left ventricular (LV) function measurements in patients with ischaemic cardiomyopathy randomised to coronary artery bypass graft surgery (CABG) with (n=501) or without (n=499) surgica ...
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Journal articleJ Am Heart Assoc · August 23, 2017
BACKGROUND: Prior studies have demonstrated a link between the metabolic syndrome and increased risk of cardiovascular mortality. Whether the metabolic syndrome is associated with sudden cardiac death is uncertain. METHODS AND RESULTS: We characterized the ...
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Journal articleCirc Cardiovasc Genet · August 2017
BACKGROUND: Left ventricular noncompaction (LVNC) is a genetically and phenotypically heterogeneous disease and, although increasingly recognized in clinical practice, there is a lack of widely accepted diagnostic criteria. We sought to identify novel gene ...
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Journal articleJAMA Cardiol · May 1, 2017
This study tests the hypothesis that cardiovascular magnetic resonance–derived left ventricular ejection fraction and volumes would provide improved risk stratification in patients undergoing coronary artery bypass surgery for ischemic cardiomyopathy. ...
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Journal articleAm Heart J · May 2017
Tissue trauma associated with stent implantation continues to generate early thrombosis rates of 0.9% to 1.3% for both bare-metal and drug-eluting stent platforms. The Combo sirolimus-eluting stent combines an abluminal, bioabsorbable polymer with a lumina ...
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Journal articleJAMA Cardiol · April 1, 2017
IMPORTANCE: Guidelines recommend noninvasive testing for patients with stable chest pain, although many subsequently have normal test results and no adverse clinical events. OBJECTIVE: To describe a risk tool developed to use only pretest clinical data to ...
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Journal articleCirc Cardiovasc Interv · January 2017
BACKGROUND: The Mission: Lifeline STEMI Systems Accelerator program, implemented in 16 US metropolitan regions, resulted in more patients receiving timely reperfusion. We assessed whether implementing key care processes was associated with system performan ...
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Journal articleEuropace · January 2017
AIMS: Catheter ablation is the most efficacious rhythm control therapy in atrial fibrillation (AF) patients. There is growing evidence that catheter ablation procedures are best performed during continuous oral anticoagulation, but outcomes are variable de ...
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Journal articleJ Cardiovasc Comput Tomogr · 2017
BACKGROUND: Coronary computed tomography angiography (CTA) and functional testing strategies for stable chest pain yield similar outcomes; one aspect that may guide test choice is safety. METHODS: We compared test safety (test complications, incidental fin ...
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Journal articleComputational Statistics and Data Analysis · September 1, 2016
Multi-type recurrent event data arise in many situations when two or more different event types may occur repeatedly over an observation period. For example, in a randomized controlled clinical trial to study the efficacy of nutritional supplements for ski ...
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Journal articleJ Am Coll Cardiol · August 16, 2016
BACKGROUND: Bioabsorbable cardiac matrix (BCM) is a novel device that attenuates adverse left ventricular (LV) remodeling after large myocardial infarctions in experimental models. OBJECTIVES: This study aimed to analyze whether BCM, compared with saline c ...
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Journal articleJACC Cardiovasc Interv · August 8, 2016
OBJECTIVES: This study tested whether intramyocardial (IM) administration of mobilized, purified autologous CD34(+) cells would improve total exercise time (TET) and angina frequency in patients with refractory angina. BACKGROUND: IM administration of auto ...
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Journal articleCirculation · August 2, 2016
BACKGROUND: Up to 50% of patients fail to meet ST-segment-elevation myocardial infarction (STEMI) guideline goals recommending a first medical contact-to-device time of <90 minutes for patients directly presenting to percutaneous coronary intervention-capa ...
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Journal articlePediatr Cardiol · June 2016
The relationship between pulmonary function and right ventricle (RV) in Duchenne muscular dystrophy (DMD) has not been evaluated. Using cardiac magnetic resonance (CMR), we describe the relationship of RV size and function with spirometry in a DMD cohort. ...
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Journal articleAm Heart J · June 2016
Atrial fibrillation (AF) is common, increasing as the population ages, and a major cause of embolic stroke. While oral anticoagulation (OAC) is highly effective at preventing stroke in patients with AF, it continues to be underused in eligible patients wor ...
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Journal articleN Engl J Med · April 21, 2016
BACKGROUND: The survival benefit of a strategy of coronary-artery bypass grafting (CABG) added to guideline-directed medical therapy, as compared with medical therapy alone, in patients with coronary artery disease, heart failure, and severe left ventricul ...
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Journal articleJ Thromb Thrombolysis · April 2016
We aimed to characterize the independent predictors of LVT following STEMI and the association with outcomes. The clinical predictors of left ventricular thrombus (LVT) formation after ST-segment elevation myocardial infarction (STEMI) are not well-defined ...
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Journal articleJ Am Coll Cardiol · November 10, 2015
BACKGROUND: Patients with left ventricular (LV) systolic dysfunction, coronary artery disease (CAD), and angina are often thought to have a worse prognosis and a greater prognostic benefit from coronary artery bypass graft (CABG) surgery than those without ...
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Journal articleAm Heart J · November 2015
BACKGROUND: We compared 30-day and 1-year survival among high-risk mitral regurgitation (MR) patients treated with the MitraClip (Abbott Vascular, Abbott Park, IL) with matched non-surgically treated patients from the Duke Echocardiography Laboratory Datab ...
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Journal articleAm Heart J · November 2015
Postinfarction left ventricular (LV) remodeling can result in chronic heart failure and functional impairment. Although pharmacological strategies for established heart failure can be beneficial, preventing remodeling remains a challenge. Injectable bioabs ...
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Journal articleEur Heart J · October 21, 2015
AIMS: The management and outcomes of patients with functional moderate/severe mitral regurgitation and severe left ventricular (LV) systolic dysfunction are not well defined. We sought to determine the characteristics, management strategies, and outcomes o ...
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Journal articleEur J Radiol · October 2015
INTRODUCTION: Right ventricular (RV) size and function in Duchenne muscular dystrophy (DMD) have not been well described. Using cardiac magnetic resonance (CMR) imaging we describe the relationship of RV and left ventricular (LV) size and function in a lar ...
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Journal articleCirculation · August 25, 2015
BACKGROUND: Patients with severe left ventricular dysfunction, ischemic heart failure, and coronary artery disease suitable for coronary artery bypass grafting (CABG) are at higher risk for surgical morbidity and mortality. Paradoxically, those patients wi ...
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Journal articleEur Heart J · May 21, 2015
AIM: In the Apixaban for Reduction in Stroke and Other Thromboembolic Events in Atrial Fibrillation (ARISTOTLE) trial, apixaban compared with warfarin reduced the risk of stroke, major bleed, and death in patients with atrial fibrillation. In this ancillar ...
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Journal articleNephrol Dial Transplant · May 2015
BACKGROUND: Sudden cardiac death is the leading cause of death among end-stage kidney disease patients (ESKD) on dialysis, but the benefit of primary prevention implantable cardioverter defibrillators (ICDs) in this population is uncertain. We conducted th ...
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Journal articleCrit Care · April 28, 2015
INTRODUCTION: The aim of our study was to evaluate the clinical impact of the administration of intravenous steroids, alone or in conjunction with drotrecogin-alfa (activated) (DrotAA), on the outcomes in septic shock patients. METHODS: We performed a sub- ...
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Journal articleN Engl J Med · April 2, 2015
BACKGROUND: Many patients have symptoms suggestive of coronary artery disease (CAD) and are often evaluated with the use of diagnostic testing, although there are limited data from randomized trials to guide care. METHODS: We randomly assigned 10,003 sympt ...
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Journal articleJACC Heart Fail · February 2015
OBJECTIVES: The purpose of this study was to assess the benefit of primary prevention implantable cardioverter defibrillators (ICDs) in women. BACKGROUND: Clinical trials of primary prevention ICDs enrolled a limited number of women. METHODS: Using a prope ...
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Journal articleCirc Arrhythm Electrophysiol · February 2015
BACKGROUND: Racial and ethnic minorities are under-represented in clinical trials of primary prevention implantable cardioverter-defibrillators (ICDs). This analysis investigates the association between primary prevention ICDs and mortality among Medicare, ...
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Journal articlePediatr Cardiol · January 2015
The aim of this study is to determine the contribution of strain ε cc in mid left ventricular (LV) segments to the reduction of composite LV circumferential ε cc in assess severity of duchenne muscular dystrophy (DMD) heart disease as assessed by cardiac m ...
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Journal articleCirc Arrhythm Electrophysiol · October 2014
BACKGROUND: Guidelines recommend that implantable cardioverter-defibrillator (ICD) candidates have an estimated longevity of ≥1 year. Longevity can be affected by chronic kidney disease (CKD). METHODS AND RESULTS: Using the National Cardiovascular Data Reg ...
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Journal articleLancet · September 27, 2014
BACKGROUND: p38 MAPK inhibition has potential myocardial protective effects. We assessed losmapimod, a potent oral p38 MAPK inhibitor, in patients with non-ST-segment elevation myocardial infarction (NSTEMI) in a double-blind, randomised, placebo-controlle ...
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Journal articleJAMA · June 4, 2014
IMPORTANCE: Clinical trials of prophylactic implantable cardioverter-defibrillators (ICDs) have included a minority of patients with a left ventricular ejection fraction (LVEF) between 30% and 35%. Because a large number of ICDs in the United States are im ...
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Journal articleAm Heart J · June 2014
BACKGROUND: Suspected coronary artery disease (CAD) is one of the most common, potentially life-threatening diagnostic problems clinicians encounter. However, no large outcome-based randomized trials have been performed to guide the selection of diagnostic ...
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Journal articleAm Heart J · January 2014
ST-segment elevation myocardial infarction (STEMI) systems of care have been associated with significant improvement in use and timeliness of reperfusion. Consequently, national guidelines recommend that each community should develop a regional STEMI care ...
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Journal articleJ Cardiovasc Magn Reson · December 21, 2013
BACKGROUND: Duchenne muscular dystrophy (DMD), an X-linked disorder affects approximately 1 in 5000 males, is universally associated with heart disease. We previously identified myocardial disease by late gadolinium enhancement (LGE) in DMD subjects at var ...
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Journal articleJ Thorac Cardiovasc Surg · November 2013
OBJECTIVE: The present analysis of the Surgical Treatment for Ischemic Heart Failure randomized trial data examined the left ventricular volumes at baseline and 4 months after surgery to determine whether any magnitude of postoperative reduction in end-sys ...
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Journal articleCirc Cardiovasc Interv · August 2013
BACKGROUND: Among patients identified prehospital with ST-segment-elevation myocardial infarction, emergency medical service transport from the field directly to the catheterization laboratory, thereby bypassing the emergency department (ED), may shorten t ...
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Journal articleJAMA · January 2, 2013
IMPORTANCE: Randomized clinical trials have shown that implantable cardioverter-defibrillator (ICD) therapy saves lives. Whether the survival of patients who received an ICD in primary prevention clinical trials differs from that of trial-eligible patients ...
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Journal articleCirc Cardiovasc Interv · August 1, 2012
BACKGROUND: For patients with ST-segment elevation myocardial infarction transferred for primary percutaneous coronary intervention, guidelines have called for device activation within 90 minutes of initial presentation. Fewer than 20% of transferred patie ...
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Journal articleCirculation · July 10, 2012
BACKGROUND: Despite national guidelines calling for timely coronary artery reperfusion, treatment is often delayed, particularly for patients requiring interhospital transfer. METHODS AND RESULTS: One hundred nineteen North Carolina hospitals developed coo ...
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Journal articleJACC Cardiovasc Interv · July 2012
OBJECTIVES: The aim of this study was to address the knowledge gap using the APEX-AMI (Assessment of Pexelizumab in Acute Myocardial Infarction) trial database. We also assessed the association between serious infections and 90-day death or death/myocardia ...
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Journal articleN Engl J Med · May 31, 2012
BACKGROUND: There have been conflicting reports on the efficacy of recombinant human activated protein C, or drotrecogin alfa (activated) (DrotAA), for the treatment of patients with septic shock. METHODS: In this randomized, double-blind, placebo-controll ...
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Journal articleCirculation · March 6, 2012
BACKGROUND: Prior studies have demonstrated low use of implantable cardioverter defibrillators (ICDs) as primary prevention, particularly among women and blacks. The degree to which the overall use of ICD therapy and disparities in use have changed is uncl ...
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Journal articleInt J Cardiovasc Imaging · January 2012
The cardiac disease ubiquitously associated in Duchenne Muscular Dystrophy (DMD) has traditionally been considered a progressive dilated cardiomyopathy (DCM). However, left ventricular (LV) dilatation as measured with cardiac MRI has not been a consistent ...
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Journal articleBiometrics · December 2011
Recurrent events are common in medical research for subjects who are followed for the duration of a study. For example, cardiovascular patients with an implantable cardioverter defibrillator (ICD) experience recurrent arrhythmic events that are terminated ...
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Journal articleJ Cardiovasc Magn Reson · October 19, 2011
BACKGROUND: Steroid use has prolonged ambulation in Duchenne muscular dystrophy (DMD) and combined with advances in respiratory care overall management has improved such that cardiac manifestations have become the major cause of death. Unfortunately, there ...
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Journal articleN Engl J Med · September 15, 2011
BACKGROUND: Vitamin K antagonists are highly effective in preventing stroke in patients with atrial fibrillation but have several limitations. Apixaban is a novel oral direct factor Xa inhibitor that has been shown to reduce the risk of stroke in a similar ...
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Journal articleJ Nucl Cardiol · May 2011
BACKGROUND: Although the use of computed tomography angiography (CTA) is considered "appropriate" to distinguish ischemic vs nonischemic etiology in patients with cardiomyopathy under the current clinical practice guideline, the evidence to support this ha ...
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Journal articleJ Cardiovasc Magn Reson · February 2, 2011
BACKGROUND: Cardiac dysfunction in boys with Duchenne muscular dystrophy (DMD) is a leading cause of death. Cardiac resynchronization therapy (CRT) has been shown to dramatically decrease mortality in eligible adult population with congestive heart failure ...
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Journal articleJACC Cardiovasc Imaging · February 2010
OBJECTIVES: To compare a steady-state free precession cine sequence-based technique (feature tracking [FT]) to tagged harmonic phase (HARP) analysis for peak average circumferential myocardial strain (epsilon(cc)) analysis in a large and heterogeneous popu ...
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Journal articleEur Heart J · November 2009
AIMS: Red blood cell transfusion is associated with increased mortality among patients with acute coronary syndromes, but little is known about the consequences of transfusion in a contemporary setting of ST-segment elevation myocardial infarction. We desc ...
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Journal articleJ Am Coll Cardiol · September 23, 2008
OBJECTIVES: The goal of this study was to determine whether azimilide, as compared with placebo, will reduce the number of emergency department (ED) visits and hospitalizations caused by arrhythmias or cardiac events in patients with an implantable cardiov ...
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Journal articleEur Heart J · December 2007
AIMS: To examine the extent and impact on clinical outcomes of adherence to electrocardiogram (ECG) entry criteria in ST-elevation myocardial infarction patients in the assessment of pexelizumab in acute myocardial infarction (APEX-AMI) trial. METHODS AND ...
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Journal articleEur Heart J · December 2006
AIMS: The purpose of this study was to assess the incidence, features, and clinical sequelae of 'electrical storm' (ES). METHODS AND RESULTS: This study is a prospectively designed secondary analysis of SHIELD; a randomized trial of azimilide for suppressi ...
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Journal articleJ Am Coll Cardiol · August 1, 2006
OBJECTIVES: The purpose of this study was to assess the incidence, temporal characteristics, and risk factors associated with azimilide-associated torsades de pointes (TdP) ventricular tachycardia. BACKGROUND: Azimilide dihydrochloride is a class III antia ...
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Journal articleAm J Cardiol · January 15, 2005
This report presents the rationale and study design details of the SHock Inhibition Evaluation with Azimilide study, which is recruiting 624 patients with implantable cardioverter-defibrillators (ICDs) who are at risk for life-threatening ventricular arrhy ...
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Journal articleCirculation · December 14, 2004
BACKGROUND: Although implanted cardioverter defibrillators (ICDs) effectively treat sustained ventricular tachyarrhythmias, up to 50% of ICD recipients eventually require concomitant antiarrhythmic drug therapy to prevent symptomatic arrhythmia recurrences ...
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Journal articleJ Am Coll Cardiol · April 7, 2004
OBJECTIVES: The purpose of this study was to assess the effect of oral azimilide dihydrochloride (AZ) 100 mg versus placebo on the onset, termination, and prevalence of atrial fibrillation (AF) in a subpopulation of patients in the Azimilide Postinfarct Su ...
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Journal articleCirculation · March 2, 2004
BACKGROUND: Depressed left ventricular function (LVF) and low heart rate variability (HRV) identify patients at risk of increased mortality after myocardial infarction (MI). Azimilide, a novel class III antiarrhythmic drug, was investigated for its effects ...
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Journal articleJ Am Coll Cardiol · January 7, 2004
OBJECTIVES: This study evaluated the effects of azimilide dihydrochloride (AZ) on anti-tachycardia pacing (ATP) and shock-terminated events in patients with implantable cardioverter defibrillators (ICDs). BACKGROUND: Animal studies have shown the effective ...
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Journal articleProc Soc Exp Biol Med · February 2000
The ventricular proarrhythmic actions of five class III antiarrhythmic agents were compared in the Carlsson rabbit model. In adrenergically stimulated anesthetized rabbits, azimilide, clofilium, dofetilide, sematilide, and d,l-sotalol caused premature vent ...
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Journal articleBiopharm Drug Dispos · March 1999
This study assessed steady-state azimilide pharmacokinetics and pharmacodynamics in 119 healthy male and female volunteers. Parallel groups of 18-40-year-old subjects received doses of 35, 100, 150 or 200 mg day(-1) for up to 14 days, with 1, 2 or 3 days o ...
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Journal articleClinical Pharmacology and Therapeutics · December 1, 1997
Azimilide is a new, novel Class III antiarrhythmic drug that blocks slow and fast K+ channels. To assess dose proportionality, parallel groups of healthy subjects (ages 18 - 40 y) were administered drug for 14 days, with up to 3 days of loading. ...
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Journal articleDrug Information Journal · 1997
A continuous-time Markov model is used to analyze electrocardiogram data obtained from a preclinical study in rabbits of five antiarrhythmic compounds. The preclinical protocol and data are introduced briefly. Some theoretical background for finite-state c ...
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Journal articleCommunications in Statistics Theory and Methods · January 1, 1997
For clinical trials with interim analyses, there have been methodologies and software to calculate boundaries for comparing binomial, normal, and survival data from two treatment groups. Jennison & Turnbull (1991) extended Pocock (1977) and O'Brien-Fleming ...
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Journal articleFASEB Journal · December 1, 1996
Prolongation of the cardiac refractoriness by class III antiarrhythmics has been associated with proarrhythmia. Azimilide dinydrochloride (AZ), was compared to clolilium, dofetilide, sematilide and d./-sotalol in a rabbit proarrhythmia model. Rabbits (n=12 ...
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Journal articleNeurol Res · April 1996
Utilizing the UIC Vascular Laboratory Registry, we retrospectively analysed the significance of side to side middle cerebral artery (MCA) flow velocity differences. Side to side differences > 15 percent measured by transcranial Doppler were considered asym ...
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Journal articleCommunications in Statistics Theory and Methods · January 1, 1994
The effects of assuming a normal distribution when in fact the data are lognormal are examined with respect to confidence intervals based on the usual t-statistic. The nature and degree of coverage probabilities which can be overstated or understated are e ...
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Journal articleCommunications in Statistics Theory and Methods · January 1, 1993
Quantitative cancer dose-response models play an important role in cancer risk assessment. They also play a role in regulatory processes associated with potential occupational or environmental exposures. The multistage model is currently the most widely us ...
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Journal articleCommunications in Statistics Theory and Methods · January 1, 1993
A within-subject monotonicity index is proposed to summarize the followup for each subject in a longitudinal study where the response is required to be only ordinal. The individual measures can be weighted to detect different trend behaviors of interest. A ...
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Journal articleCommunications in Statistics Theory and Methods · January 1, 1991
It is often desirable to test non-nested hypotheses. Cox (1961, 1962) proposed forming a log-likelihood ratio from their maxima and then comparing this value to its expected value under the null hypothesis. Pitfalls exists when we apply Cox's test to the s ...
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