Abstract:
BACKGROUND:Ventricular remodeling often occurs after myocardial infarction, yet the natural history remains unpredictable because of the chronicity of the process and therapeutic interventions involved. We induced cardiac dysfunction in an ovine model via selective microembolization of the circumflex coronary artery (LCx) to test the hypothesis that ventricular remodeling progresses following coronary microembolization for up to 24 months. Methods and results Sheep underwent weekly selective microembolization of the LCx until left ventricular ejection fraction stabilized <35% for 2 consecutive weeks. In a subgroup carried out to 4 months, the end-systolic pressure-volume relationship slope decreased from 2.3+/-0.6 (baseline) to 1.3+/-0.5 at month 4 (P<.05). In a second group, echocardiography at 24 months, the ejection fraction decreased from 51+/-3% (baseline) to 25+/-2% (month 5) (P<.05) and stabilized through month 24 (23+/-5%, P<.05), whereas left ventricular end-systolic area and left ventricular end-diastolic area increased by 222% and 98%, respectively, through month 24. CONCLUSIONS:Selective microembolization of the LCx induces left ventricular dysfunction followed by dilated, ischemic cardiomyopathy, which continues to progress for up to 2 years despite stabilization of left ventricular ejection fraction. This model of ventricular remodeling secondary to microinfarction may be a useful experimental platform for large animal heart failure investigations.
journal_name
J Card Failjournal_title
Journal of cardiac failureauthors
Monreal G,Gerhardt MA,Kambara A,Abrishamchian AR,Bauer JA,Goldstein AHdoi
10.1016/j.cardfail.2003.08.013keywords:
subject
Has Abstractpub_date
2004-04-01 00:00:00pages
174-83issue
2eissn
1071-9164issn
1532-8414pii
S1071916403007097journal_volume
10pub_type
杂志文章abstract:BACKGROUND:Urinary liver-type fatty acid-binding protein (L-FABP) is a potential biomarker for acute kidney injury, and it in turn increases cardiovascular mortality. We tested whether the urinary L-FABP level predicted short- and mid-term outcomes in patients with acute heart failure. METHODS AND RESULTS:We enrolled ...
journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2018.07.003
更新日期:2018-08-01 00:00:00
abstract:BACKGROUND:The effect of elevated heart rate (HR) on outcomes after heart transplantation (HT) has not been well established. The aim of this study was to assess predictors of elevated HR following HT and its impact on outcomes. METHODS AND RESULTS:We retrospectively evaluated 394 patients who underwent HT at 2 academ...
journal_title:Journal of cardiac failure
pub_type: 杂志文章,多中心研究
doi:10.1016/j.cardfail.2019.01.009
更新日期:2019-04-01 00:00:00
abstract:OBJECTIVES:There have been no published recommendations about staffing needs for a heart failure (HF) clinic or an office setting focused on heart transplant. The goal of this survey was to understand the current staffing environment of HF, transplant, and mechanical circulatory support device (MCSD) programs in the Un...
journal_title:Journal of cardiac failure
pub_type: 杂志文章,多中心研究
doi:10.1016/j.cardfail.2011.04.001
更新日期:2011-05-01 00:00:00
abstract:BACKGROUND:Pediatric heart failure (HF) patients have a suboptimal response to traditional HF medications, although phosphodiesterase-3 inhibition (PDE3i) has been used with greater success than in the adult HF population. We hypothesized that molecular alterations specific to children with HF and HF etiology may affec...
journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2016.07.429
更新日期:2017-01-01 00:00:00
abstract:BACKGROUND:For over a century, the dog model has been used widely in research studying cardiovascular physiology pertinent to humans. It has been specially applied, over the past 2 decades, in research on the pathophysiology and treatment of left ventricular (LV) remodeling and heart failure. METHODS AND RESULTS:Becau...
journal_title:Journal of cardiac failure
pub_type: 杂志文章,评审
doi:10.1054/jcaf.2002.129274
更新日期:2002-12-01 00:00:00
abstract:BACKGROUND:To determine the feasibility of peripheral intravenous volume analysis (PIVA) of venous waveforms for assessing volume overload in patients admitted to the hospital with acute decompensated heart failure (ADHF). METHODS:Venous waveforms were captured from a peripheral intravenous catheter in subjects admitt...
journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2018.05.003
更新日期:2018-08-01 00:00:00
abstract:BACKGROUND:The clinical consequences of prehospital delay in heart failure (HF) patients are unknown. This study explores the relationship between prehospital delay of HF patients and length of hospital stay, plasma values of brain natriuretic peptides (BNP) as well as the association of delay with all-cause mortality,...
journal_title:Journal of cardiac failure
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1016/j.cardfail.2011.12.007
更新日期:2012-03-01 00:00:00
abstract:BACKGROUND:Heart failure (HF) guidelines recommend treatment with multiple medications to improve survival, functioning, and quality of life. Yet, HF treatments can be costly, resulting in significant economic burden for some patients. To date, there are few data on the impact of patients' perceived difficulties in aff...
journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2006.03.004
更新日期:2006-06-01 00:00:00
abstract:BACKGROUND:Altering the renin-angiotensin aldosterone system improve mortality in heart failure (HF) in part through an improvement in nitric oxide (NO)-mediated endothelial function. This study examined if spironolactone affects endothelial nitric oxide synthase (eNOS) and NO-mediated vasorelaxation in HF. METHODS AN...
journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2006.01.002
更新日期:2006-04-01 00:00:00
abstract:BACKGROUND:Diabetes is associated with increased risk of mortality in heart failure. We examined the association of diabetes with expenditures, hospitalizations, and procedures among Medicare beneficiaries with heart failure during the last 6 months of life. METHODS AND RESULTS:In a 5% national Medicare sample, the pr...
journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2011.09.011
更新日期:2012-01-01 00:00:00
abstract:BACKGROUND:Phosphodiesterase-5A inhibitors (PDE5i) are sometimes used in patients with advanced heart failure with reduced ejection fraction before heart transplant or left ventricular assist device implantation to decrease right ventricular (RV) afterload and mitigate the risk of right heart failure. Conflicting evide...
journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2020.11.007
更新日期:2020-11-21 00:00:00
abstract:BACKGROUND:The value of the plain chest roentgenogram in predicting cardiac status remains controversial. METHODS AND RESULTS:A total of 111 randomly selected survivors of acute myocardial infarction (age 38 to 83 years) were studied prospectively. X-ray and radionuclide examinations were performed on a morning in the...
journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2004.10.004
更新日期:2005-05-01 00:00:00
abstract:INTRODUCTION:This study was designed to determine if physicians' attitudes and recommendations surrounding implantable cardioverter-defibrillators (ICDs) are regionally associated with ICD use. METHODS AND RESULTS:A national sample of 9969 members of the American College of Cardiology was surveyed electronically. Resp...
journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2010.11.009
更新日期:2011-04-01 00:00:00
abstract:BACKGROUND:Coronary artery disease is the most common cause of heart failure (HF) in developed countries. The aim of this study was to elucidate the mechanisms of reduction of arrhythmias after sacubitril/valsartan (LCZ696) therapy in a myocardial infarction (MI)-HF rabbit model. METHODS AND RESULTS:Chronic MI in rabb...
journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2020.03.007
更新日期:2020-06-01 00:00:00
abstract:BACKGROUND:Exercise training can help patients with chronic heart failure but may be limited in its applicability due to age and other comorbidities. This investigation evaluated training responses to prolonged electrical muscle stimulation (EMS) in patients with stable chronic heart failure. METHODS AND RESULTS:In a ...
journal_title:Journal of cardiac failure
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.cardfail.2008.11.005
更新日期:2009-05-01 00:00:00
abstract::Beta-adrenergic blocking agents are standard treatment for patients with mild-to-moderate heart failure. When patients receiving beta-blockers decompensate they often need treatment with a positive inotropic agent. The beta-agonist dobutamine may not produce much increase in cardiac output during full-dose beta-blocke...
journal_title:Journal of cardiac failure
pub_type: 杂志文章,评审
doi:10.1054/jcaf.2001.26655
更新日期:2001-06-01 00:00:00
abstract:BACKGROUND:Idiopathic giant cell myocarditis (GCM) is an uncommon cause of cardiac failure distinguished clinically from lymphocytic myocarditis by rapidly progressive heart failure, arrhythmias, and heart block. Unlike fulminant lymphocytic myocarditis, patients with fulminant cardiac failure caused by GCM may respond...
journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1054/jcaf.2002.32196
更新日期:2002-04-01 00:00:00
abstract::Elevated plasma levels of endothelin (ET) have been reported to accompany the development of heart failure (HF), and therefore, this potent vasoconstrictive peptide has been postulated to contribute to the altered pulmonary hemodynamics that occur in this disease process. The overall goal of this study was to examine ...
journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/s1071-9164(97)90025-7
更新日期:1997-12-01 00:00:00
abstract:BACKGROUND:A link between diabetes mellitus (DM) and heart failure (HF) has been well-recognized for more than a century. HF is also closely linked to abnormal glucose regulation (AGR) and insulin resistance (IR) in patients without DM and, similarly, these conditions commonly coexist. In epidemiological studies, each ...
journal_title:Journal of cardiac failure
pub_type: 杂志文章,评审
doi:10.1016/j.cardfail.2010.05.027
更新日期:2010-09-01 00:00:00
abstract:BACKGROUND:Cardiac resynchronization therapy (CRT) has been shown to improve heart failure (HF) symptoms and survival. We hypothesized that a greater improvement in left-ventricular ejection fraction (LVEF) after CRT is associated with greater survival benefit. METHODS AND RESULTS:In 693 patients across 2 internationa...
journal_title:Journal of cardiac failure
pub_type: 杂志文章,多中心研究
doi:10.1016/j.cardfail.2014.03.001
更新日期:2014-06-01 00:00:00
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journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2012.05.008
更新日期:2012-08-01 00:00:00
abstract:BACKGROUND:Although there have been many studies on the effects of atrial fibrillation (AF) on cardiac function, few studies have been done on its effects on endothelial function. The present study was designed to examine the effects of AF on endothelial function in human subjects. METHODS AND RESULTS:Changes in forea...
journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1054/jcaf.2001.22107
更新日期:2001-03-01 00:00:00
abstract:BACKGROUND:Recovery of ventricular function during left ventricular assist device (LVAD) support allowing device explantation occurs infrequently. We explored the hypothesis that certain patient profiles are more likely to exhibit LV recovery during LVAD support. METHODS AND RESULTS:A retrospective analysis of data fr...
journal_title:Journal of cardiac failure
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1016/j.cardfail.2012.01.020
更新日期:2012-05-01 00:00:00
abstract:BACKGROUND:Some of the most frequent manifestations of heart involvement in human immunodeficiency virus (HIV) infection include right and left ventricular dysfunction. The pathogenesis remains obscure. METHODS AND RESULTS:This prospective clinical and echocardiographic study involved 181 patients at all stages of HIV...
journal_title:Journal of cardiac failure
pub_type: 临床试验,杂志文章
doi:10.1016/s1071-9164(98)90504-8
更新日期:1998-03-01 00:00:00
abstract:BACKGROUND:Little is known about guideline-directed pharmacotherapy use in patients with heart failure and reduced ejection fraction (HFrEF) discharged to skilled nursing facilities (SNFs). This study aimed to describe the use of angiotensin-converting enzyme inhibitors (ACEIs)/angiotensin receptor blocker (ARBs) and e...
journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2017.09.007
更新日期:2017-12-01 00:00:00
abstract:BACKGROUND:Although beta-blockers were well-tolerated by heart failure (HF) patients in clinical trials, tolerability of these drugs in a general population of HF patients is not well-described. METHODS:We studied a total of 308 encounters with beta-blockers therapy in 268 ambulatory HF patients. Side effects and freq...
journal_title:Journal of cardiac failure
pub_type: 杂志文章,多中心研究
doi:10.1054/jcaf.2003.34
更新日期:2003-06-01 00:00:00
abstract:BACKGROUND:Heightened activity of the sympathetic nervous system in heart failure patients is a major contributor to disease progression and death. I-123 metaiodobenzylguanidine (MIBG) provides an accurate, noninvasive method to assess cardiac sympathetic nerve activity. METHODS:Thirty-seven patients with New York Hea...
journal_title:Journal of cardiac failure
pub_type: 临床试验,杂志文章
doi:10.1054/s1071-9164(03)00134-9
更新日期:2003-10-01 00:00:00
abstract::Heart failure (HF) is a syndrome characterized by high mortality, frequent hospitalization, reduced quality of life, and a complex therapeutic regimen. Knowledge about HF is accumulating so rapidly that individual clinicians may be unable to readily and adequately synthesize new information into effective strategies o...
journal_title:Journal of cardiac failure
pub_type: 杂志文章,实务指引
doi:10.1016/j.cardfail.2005.11.005
更新日期:2006-02-01 00:00:00
abstract:BACKGROUND:Thiazolidinediones are associated with fluid retention, often interpreted as worsening cardiac function, limiting their use in patients with heart failure (HF). We compared the effects of pioglitazone and glyburide on cardiac function in patients with type 2 diabetes, systolic dysfunction, and New York Heart...
journal_title:Journal of cardiac failure
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1016/j.cardfail.2008.02.007
更新日期:2008-08-01 00:00:00
abstract:BACKGROUND:Frailty reflects decreased resilience to physiological stressors; its prevalence and prognosis are not fully defined in heart failure with preserved ejection fraction (HFpEF). METHODS:The Short Physical Performance Battery (SPPB) was prospectively obtained in 114 outpatients with HFpEF. The SPPB tests gait ...
journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2018.09.002
更新日期:2019-01-01 00:00:00