Journal ArticleInt J Cardiol · June 20, 2013
BACKGROUND: Although numerous trials have demonstrated the diagnostic accuracy of coronary artery calcium (CAC) scanning for prediction of obstructive disease, virtually all studies have been performed using Electron Beam CT (EBCT). We evaluated the diagno ...
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Journal ArticleAm J Cardiol · November 1, 2012
Mitral valve prolapse may involve 1 leaflet or 2 leaflets, yet management guidelines do not differentiate posterior leaflet (PML) from bileaflet (BML) prolapse. We hypothesized that patients with BML have a prolonged natural history with more severe atrial ...
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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 ArticleCirc Cardiovasc Qual Outcomes · July 1, 2012
BACKGROUND: National guidelines call for participation in systems to rapidly diagnose and treat ST-segment-elevation myocardial infarction (STEMI). In order to characterize currently implemented STEMI reperfusion systems and identify practices common to sy ...
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Journal ArticleCrit Pathw Cardiol · June 2012
The timely diagnosis and treatment of acute ST-segment elevation myocardial infarction (STEMI) have become paramount to improving outcomes in this population. Many states, including North Carolina, have established systems to guide regional emergency provi ...
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Journal ArticleJ Am Coll Cardiol · April 3, 2012
OBJECTIVES: The purpose of this study was to characterize patients with mitral regurgitation (MR) and atrial fibrillation (AF) treated percutaneously using the MitraClip device (Abbott Vascular, Abbott Park, Illinois) and compare the results with surgery i ...
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Journal ArticleCirculation · January 17, 2012
BACKGROUND: For patients with an acute ST-segment elevation myocardial infarction, cardiac catheterization laboratory (CCL) activation by emergency medical technicians or emergency physicians has been shown to substantially reduce treatment times. One draw ...
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Journal ArticlePLoS One · 2012
BACKGROUND: Detecting and quantifying the severity of mitral regurgitation is essential for risk stratification and clinical decision-making regarding timing of surgery. Our objective was to assess specific visual parameters by cine-magnetic resonance imag ...
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Journal ArticleCirc Cardiovasc Qual Outcomes · July 2011
BACKGROUND: The ability to rapidly identify patients with ST-segment elevation-myocardial infarction (STEMI) at hospitals without percutaneous coronary intervention (PCI) and transfer them to hospitals with PCI capability is critical to STEMI regionalizati ...
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Journal ArticleJAMA · June 22, 2011
CONTEXT: Patients with ST-elevation myocardial infarction (STEMI) requiring interhospital transfer for primary percutaneous coronary intervention (PCI) often have prolonged overall door-to-balloon (DTB) times from first hospital presentation to second hosp ...
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Journal ArticleHeart · February 2011
BACKGROUND: Optimal timing of surgery in degenerative mitral regurgitation (MR) remains a controversial topic. The impact of current ACC/AHA guideline recommendations about optimal timing of surgery on outcomes is untested and contemporary data are lacking ...
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Journal ArticleCirc Cardiovasc Qual Outcomes · September 2010
BACKGROUND: Prior studies have demonstrated differences in time to reperfusion for ST-segment-elevation myocardial infarction (STEMI) in women, minorities, and the elderly, relative to their counterparts. Regionalization has been shown to improve overall S ...
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Journal ArticleAnn Thorac Surg · October 2009
BACKGROUND: Undersized ring annuloplasty and surgical revascularization are commonly used to correct ischemic mitral regurgitation (MR), but published series have failed to demonstrate a benefit compared with revascularization alone. We hypothesized that s ...
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Journal ArticleHealth Serv Res · April 2009
OBJECTIVES: To test whether state Certificate of Need (CON) regulations influence procedural mortality or the provision of coronary artery bypass graft surgery (CABG) and percutaneous coronary interventions (PCI). DATA SOURCES: Medicare inpatient claims ob ...
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Journal ArticleJ Am Coll Cardiol · November 18, 2008
OBJECTIVES: The purpose of this study was to evaluate the diagnostic accuracy of electrocardiographically gated 64-multidetector row coronary computed tomographic angiography (CCTA) in individuals without known coronary artery disease (CAD). BACKGROUND: CC ...
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Journal ArticleJ Heart Valve Dis · November 2008
Prosthetic valve dysfunction is a rare but life-threatening condition. A 66-year-old woman presented with shock 15 years after aortic valve replacement with a tilting-disc valve. Imaging demonstrated severe aortic insufficiency and a fixed-open prosthetic ...
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Journal ArticleJ Am Soc Echocardiogr · November 2008
UNLABELLED: ACCREDITATION STATEMENT: The American Society of Echocardiography (ASE) is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The ASE designates this educational acti ...
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Journal ArticleHeart · May 2008
BACKGROUND: Despite widespread acceptance of echocardiography for diagnosis of infective endocarditis, few investigators have evaluated its utility as a risk-stratification tool to aid therapeutic decision-making. METHODS: A decision tree and Markov analys ...
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Journal ArticleAnesthesiology · April 2008
BACKGROUND: Changes in the demographics and epidemiology of patients with cardiovascular comorbidities who undergo major noncardiac surgery require an updated assessment of which patients are at greater risk of mortality or readmission. The authors evaluat ...
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Journal ArticleJAMA · November 28, 2007
CONTEXT: Despite 2 decades of evidence demonstrating benefits from prompt coronary reperfusion, registries continue to show that many patients with ST-segment elevation myocardial infarction (STEMI) are treated too slowly or not at all. OBJECTIVE: To estab ...
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Journal ArticleAnesthesiology · November 2007
BACKGROUND: Patients undergoing coronary artery bypass graft (CABG) surgery frequently develop wall motion abnormalities diagnosed by intraoperative transesophageal echocardiography. However, the relation between deterioration in wall motion and postoperat ...
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Journal ArticleAm Heart J · November 2007
BACKGROUND: Training cardiovascular (CV) imaging specialists is becoming increasingly complex owing to rapidly emerging technological advances and the growing recognition that single modality training is inefficient and results in suboptimal education and ...
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Journal ArticleAm Heart J · February 2007
BACKGROUND: Although heart failure (HF) afflicts nearly 5 million Americans, the long-term cost of HF care has not been described previously. In a prospective, longitudinal cohort of community-dwelling elderly from 4 regions, we examined the long-term cost ...
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Journal ArticleDig Dis Sci · December 2006
Patients who present with upper gastrointestinal bleeding (UGIB) in the setting of acute myocardial infarction (AMI) may have suffered an UGIB that subsequently led to an AMI or endured an AMI and subsequently suffered a UGIB as a consequence of anticoagul ...
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Journal ArticleJ Am Coll Cardiol · November 21, 2006
Cardiovascular imaging has enjoyed both rapid technological advances and sustained growth, yet less attention has been focused on quality than in other areas of cardiovascular medicine. To address this deficit, representatives from cardiovascular imaging s ...
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Journal ArticleAm Heart J · November 2006
Despite the accumulation of almost 2 decades of data in support of rapid reperfusion therapy for ST-segment elevation myocardial infarction (STEMI), the United States healthcare system still faces serious challenges in providing reperfusion to all eligible ...
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Journal ArticleJ Invasive Cardiol · September 2006
OBJECTIVE: We examined outcomes of clinical restenosis and temporal trends in repeat target vessel revascularization (TVR) among a broad, unselected patient population undergoing percutaneous coronary revascularization. BACKGROUND: The extent to which clin ...
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Journal ArticleAm Heart J · August 2006
BACKGROUND: Because coronary artery disease (CAD) is a prevalent comorbidity in patients with low ejection function (EF), a number of patients with heart failure undergo diagnostic cardiac catheterization. The objective of this study was to develop a model ...
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Journal ArticleAm J Cardiol · May 15, 2006
Coronary stents have markedly improved the short- and intermediate-term safety and efficacy of percutaneous coronary intervention by improving acute gains in luminal dimensions, decreasing abrupt vessel occlusion, and decreasing restenosis, yet the long-te ...
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Journal ArticleArch Intern Med · January 9, 2006
BACKGROUND: Among the elderly population, heart failure (HF) with normal ejection fraction (EF) is more common than classic HF with low EF. However, there are few data regarding the costs of HF with normal EF. In a prospective, population-based cohort of e ...
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OtherScand J Infect Dis · 2006
The purpose of this investigation was to study the influence of diabetes mellitus (DM) on outcomes of infective endocarditis (IE). Outcomes were compared between 150 diabetic and 905 non-diabetic patients with IE from the International Collaboration on End ...
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Journal ArticleJ Am Soc Echocardiogr · December 2005
OBJECTIVES: Our study was designed to demonstrate that transesophageal echocardiography using a 3.3-mm monoplane probe can accurately evaluate the left atrium for patients with arrhythmias before cardioversion. BACKGROUND: Standard probes cause discomfort ...
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Journal ArticleJ Am Coll Cardiol · October 18, 2005
OBJECTIVES: The purpose of this study is to determine if implantable cardioverter-defibrillator (ICD) implantation should be limited to physicians with high procedural volume. BACKGROUND: Expanding indications for ICDs will result in an increasing number o ...
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Journal ArticleAnn Intern Med · October 4, 2005
BACKGROUND: Previous studies suggest that patients hospitalized with acute myocardial infarction (MI) in December have poor outcomes, and some studies have hypothesized that the cause may be the infrequent use of evidence-based therapies during the Decembe ...
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Journal ArticleClin Cardiol · July 2005
BACKGROUND: Patients with elevated troponin are at high risk of adverse outcomes, future cardiac events, and are more likely to have hemodynamically significant coronary artery stenoses. Elevated troponin T (cTnT) in patients with poor renal function porte ...
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Journal ArticleAnn Intern Med · April 19, 2005
BACKGROUND: The Multicenter Automatic Defibrillator Implantation Trial (MADIT)-II demonstrated that implantable cardioverter defibrillators (ICDs) save lives when used in patients with a history of myocardial infarction (MI) and an ejection fraction of 0.3 ...
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Journal ArticleAm J Cardiol · April 15, 2005
An analysis of smokers admitted with acute coronary syndrome who received transdermal nicotine therapy and those who did not was performed. Propensity analysis was used to match patients. Transdermal nicotine therapy appears safe and does not have an effec ...
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Journal ArticleAm Heart Hosp J · 2005
By averting restenoses, drug-eluting stents (DES) reduce the need for repeat revascularization procedures and improve quality of life. Large, randomized clinical trials including the Sirolimus-Eluting Balloon Expandable Stent in Treatment of Patients With ...
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Journal ArticleJAMA · October 6, 2004
CONTEXT: It is unclear if blood transfusion in anemic patients with acute coronary syndromes is associated with improved survival. OBJECTIVE: To determine the association between blood transfusion and mortality among patients with acute coronary syndromes ...
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Journal ArticleJ Am Coll Cardiol · October 6, 2004
OBJECTIVES: The purpose of this study was to evaluate mortality and readmission rates of heart failure (HF) patients after major noncardiac surgery. BACKGROUND: There is a lack of generalizable outcome data on HF patients undergoing major noncardiac surger ...
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Journal ArticleJ Am Coll Cardiol · July 7, 2004
OBJECTIVES: The purpose of this study was to determine whether state-mandated continuing medical education (CME) requirements affect the use of evidence-based therapies and outcomes in patients with acute myocardial infarction (AMI). BACKGROUND: The Instit ...
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Journal ArticleArch Intern Med · May 24, 2004
BACKGROUND: Although the Medicare entitlement provides universal hospital care coverage for elderly Americans, disparities in care processes after acute myocardial infarction still exist. Whether these disparities account for increased mortality among elde ...
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Journal ArticleAm J Cardiol · May 15, 2004
In 107 patients with coronary disease and severe left ventricular dysfunction, we examined the prognostic power of viability identified by dobutamine stress echocardiography. At a mean follow-up of 27 months, patients with viable myocardium who underwent r ...
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Journal ArticleJ Am Coll Cardiol · February 18, 2004
OBJECTIVES: To identify the prevalent and prognostically important coexisting illnesses among single coronary artery disease (CAD) patients. BACKGROUND: As the population ages, physicians are increasingly required to make decisions concerning patients with ...
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Journal ArticleAm J Cardiol · February 15, 2004
Echocardiograms of 290 patients with dilated cardiomyopathy (ejection fraction < or =35%) were reviewed for the presence of left ventricular (LV) apical abnormalities; outcomes of stroke and death were then correlated with the presence of LV thrombus. Duri ...
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Journal ArticleHealth Serv Res · February 2004
OBJECTIVE: To examine the effects of market-level managed care activity on the treatment, cost, and outcomes of care for Medicare fee-for-service acute myocardial infarction (AMI) patients. DATA SOURCES/STUDY SETTING: Patients from the Cooperative Cardiova ...
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Journal ArticleAm Heart J · January 2004
BACKGROUND: Echocardiography is used commonly in clinical practice when caring for patients with heart failure. It is unknown whether the presence of certain findings provides an incremental ability to predict survival beyond the use of baseline clinical f ...
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Journal ArticleArch Intern Med · June 23, 2003
BACKGROUND: The Institute of Medicine's report To Err Is Human: Building a Safer Health System recommends pharmacist participation in patient rounds as an immediate approach to reducing medical errors. In the same report and in prior publications, cardiova ...
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Journal ArticleCardiol Clin · May 2003
Cardiac imaging, specifically echocardiography, has greatly enhanced the ability of clinicians to effectively diagnose and manage IE. Echocardiograms should generally be obtained in all patients suspected of having IE, both to establish the diagnosis and t ...
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Journal ArticleJ Am Coll Cardiol · March 19, 2003
OBJECTIVES: We sought to determine the overall prognostic importance of left ventricular hypertrophy (LVH) among patients with coronary artery disease (CAD), as well as to determine whether this risk varies as a function of race or gender. BACKGROUND: Left ...
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Journal ArticleAm Heart Hosp J · 2003
Quality assurance and improvement have increasingly been the focus of health care providers, third-party payers, and patients. Because cardiovascular procedures are common, easily identifiable with claims data, and account for a relatively large proportion ...
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Journal ArticleAm Heart J · December 2002
BACKGROUND: Fenfluramine-derivative diet pills were withdrawn from the market in 1997 because of an association with valvular regurgitation, but subsequent estimates of the prevalence of this condition have varied widely. We systematically reviewed evidenc ...
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Journal ArticleInfect Dis Clin North Am · June 2002
With the ability to structurally characterize cardiac manifestations, echocardiography is used for the diagnosis and management of infective endocarditis. In establishing the diagnosis according to the Duke criteria, the findings of endocardial involvement ...
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Journal ArticleArch Intern Med · January 14, 2002
BACKGROUND: Limited data exist on recent demographic and microbiological changes in infective endocarditis (IE) and the impact of these changes on patient survival. METHODS: Data were collected from all patients with definite or possible IE at Duke Univers ...
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Journal ArticleCatheter Cardiovasc Interv · January 2002
We sought to evaluate the relative cost of surgical and device closure of atrial septal defect. Device closure for atrial septal defects is becoming an alternative to surgical closure. We examined the hospital-generated cost data in 13 patients who underwe ...
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Journal ArticleCardiovascular Reviews and Reports · January 1, 2002
The assessment of quality is gaining more importance as physicians and hospitals are expected to adhere to standards of quality care. Cardiovascular procedures, such as percutaneous coronary intervention (PCI), lend themselves to quality assessment because ...
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Journal ArticleAm Heart J · November 2001
BACKGROUND: The segment of patients with advanced coronary artery disease, or disease that is not amenable to conventional revascularization therapies, continues to grow. Because the natural history of these patients is less defined, the appropriate end po ...
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Journal ArticleAm Heart J · July 2001
BACKGROUND: The purpose of this study was to examine the use of post-myocardial infarction (MI) risk stratification in the elderly. Although expert panels have recommended risk stratification after MI, limited data are available on whether patients actuall ...
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Journal ArticleAm J Cardiol · April 15, 2001
The identification of an association between fenfluramines and valvular disease has raised the possibility of a similar association between another class of medications that increases local levels of serotonin, the selective serotonin-reuptake inhibitors ( ...
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Journal ArticleAnn Intern Med · February 20, 2001
BACKGROUND: An association between the dietary suppressants fenfluramine and dexfenfluramine and valvular heart disease was first described in patients from North Dakota and Minnesota in 1997. Limited data are available on the natural history of this valvu ...
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Journal ArticleCirculation · May 2, 2000
BACKGROUND: The combination of fenfluramine and phentermine was a widely used obesity treatment before the withdrawal of fenfluramine for an association with heart valve regurgitation. The prevalence and clinical significance of regurgitation among patient ...
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Journal ArticlePharmacoeconomics · March 2000
OBJECTIVE: To evaluate the relationship between how much a new cardiovascular therapy improves clinical outcomes over current therapies and how much more it can cost while still remaining 'economically attractive'. DESIGN: We developed a decision model to ...
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Journal ArticleArch Intern Med · October 25, 1999
BACKGROUND: Although calcium channel blockers are a useful therapy in relieving angina, lowering blood pressure, and slowing conduction of atrial fibrillation, growing evidence has cast doubt on their safety in patients with coronary disease. OBJECTIVE: To ...
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Journal ArticleAnn Intern Med · May 18, 1999
BACKGROUND: The appropriate duration of therapy for catheter-associated Staphylococcus aureus bacteremia is controversial. Conventional practice dictates that all patients receive prolonged courses of intravenous antibiotics. Some clinicians recommend abbr ...
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Journal ArticleCardiol Clin · February 1999
Old age as our society is experiencing it is a new phenomenon. Never before in history have societies of developed countries enjoyed such longevity of life. In the next several decades the United States will face an unparalleled increase in the absolute nu ...
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Journal ArticlePacing Clin Electrophysiol · October 1998
We report a 51-year-old man with severe ischemic cardiomyopathy and heart failure in whom incessant bigeminal ventricular ectopy failed to generate a detectable arterial pressure. This created a mechanical bradycardia despite an adequate electrical heart r ...
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Journal ArticleJ Am Coll Cardiol · October 1998
OBJECTIVE: The aim of this study was to examine the effects of provider profiling on bypass surgery access and outcomes in elderly patients in New York. BACKGROUND: Since 1989, New York (NY) has compiled provider-specific bypass surgery mortality reports. ...
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Journal ArticleAm J Cardiol · November 15, 1997
Patients with known coronary disease and low-density lipoprotein >130 mg/dl who are followed by cardiologists after myocardial infarction are more than twice as likely to receive a cholesterol-lowering agent than patients followed by general internists. ...
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Journal ArticleJ Am Coll Cardiol · October 1997
OBJECTIVES: This study examined the impact of early hospital discharge on short-term clinical outcomes of elderly patients treated with coronary artery bypass graft surgery (CABG) in the United States in 1992. BACKGROUND: Protocols that encourage earlier d ...
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Journal ArticleCirculation · June 3, 1997
BACKGROUND: With the expectation that physicians who perform larger numbers of coronary angioplasty procedures will have better outcomes, the American College of Cardiology/ American Heart Association guidelines recommend minimum physician volumes of 75 pr ...
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Journal ArticleMed Care · April 1997
OBJECTIVES: The purpose of this study was to examine the national variability in patient-level cost and length of stay for coronary artery bypass grafting (CABG) in Medicare patients. METHODS: Retrospective multivariate regression analysis was done using M ...
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Journal ArticleHealth Serv Res · February 1997
OBJECTIVES: To assess the relative abilities of clinical and administrative data to predict mortality and to assess hospital quality of care for CABG surgery patients. DATA SOURCES/STUDY SETTING: 1991-1992 data from New York's Cardiac Surgery Reporting Sys ...
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Journal ArticleProc AMIA Annu Fall Symp · 1997
Newer pharmacologic agents have demonstrated significant clinical and economic benefit in high-risk percutaneous transluminal coronary angioplasty (PTCA) patients. However, the higher costs of these agents may prohibit their use in lower-risk coronary arte ...
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Journal ArticleJournal of the American Medical Informatics Association · January 1, 1997
Newer pharmacologic agents have demonstrated significant clinical and economic benefit in high-risk percutaneous transluminal coronary angioplasty (PTCA) patients. However, the higher costs of these agents may prohibit their use in lower-risk coronary arte ...
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Journal ArticleN Engl J Med · December 19, 1996
BACKGROUND: In order to limit costs, health care organizations in the United States are shifting medical care from specialists to primary care physicians. Although primary care physicians provide less resource-intensive care, there is little information co ...
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Journal ArticleCirculation · August 15, 1996
BACKGROUND: In the EPIC trial, c7E3 Fab, an antiplatelet IIb/ IIIa receptor antibody, reduced 30-day ischemic end points after high-risk coronary angioplasty by 35% and 6-month ischemic events by 23% but increased in-hospital bleeding episodes. METHODS AND ...
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Journal ArticleJ Gen Intern Med · June 1996
An experimental pilot study using repeated measures to examine the impact of an interactive video program on the decision making of patients with ischemic heart disease was carried on at a tertiary care center and a Veterans Affairs hospital. The patients ...
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Journal ArticleCirculation · November 1, 1995
BACKGROUND: Coronary artery bypass graft surgery is increasingly common in patients of age > or = 80 years. Single-institution reviews have cited a wide range of mortality results after bypass surgery in this age group, in part because of limited sample si ...
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Journal ArticleN Engl J Med · December 15, 1994
BACKGROUND: Previous studies have found that hospitals at which more procedures, such as coronary-artery bypass grafting (CABG) and other vascular surgery, are performed have lower rates of mortality related to these procedures than hospitals where fewer s ...
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Journal ArticleAnn Intern Med · December 15, 1994
OBJECTIVE: To examine secular changes in the use and outcome of percutaneous transluminal coronary angioplasty and cardiac bypass graft surgery in the elderly. DESIGN: A retrospective cohort study based on a longitudinal database created from the administr ...
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Journal ArticleCirculation · May 1994
BACKGROUND: Survival after coronary artery bypass graft surgery (CABG) and medical therapy in patients with coronary artery disease (CAD) has been studied in both randomized trials and observational treatment comparisons. Over the past decade, the use of c ...
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Journal ArticleAm J Cardiol · March 1, 1994
Thrombolytic therapy for acute myocardial infarction (AMI) has reduced mortality at the expense of additional intracranial hemorrhages. To determine whether this trade-off has been optimized, a decision analysis was performed using pooled data to determine ...
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Journal ArticleJ Clin Epidemiol · March 1994
Health services researchers rely heavily on administrative data bases, but incomplete or incorrect coding may bias risk models based on administrative data. The best method for validating administrative data is to collect detailed information about the sam ...
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Journal ArticleAnn Intern Med · October 15, 1993
OBJECTIVE: To determine the suitability of insurance claims information for use in clinical outcomes research in ischemic heart disease. DESIGN: Concordance study of two databases. SETTING: Tertiary care referral center. PATIENTS: A total of 12,937 consecu ...
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