Abstract：
BACKGROUND:Peak oxygen uptake (VO2) measured during cardiopulmonary exercise testing (CPX) is often used as an outcome measure in clinical trials. The purposes of this study are (a) to report the outcomes of a quality assurance (QA) procedure instituted in multisite clinical trials by a CPX data core laboratory and (b) to report a normative VO2 reference dataset for future use. METHODS:The CPX laboratory at each site participating in a multisite clinical trial in which Henry Ford Hospital served as the CPX data core laboratory was required to pass a standardized QA procedure before site activation and regularly thereafter. Data were compared with a VO2 reference dataset (pilot data) and assessed for test-retest reproducibility. VO2 data that represented a normal physiologic response were used to develop a final normative VO2 reference dataset. RESULTS:Between 2003 and 2006, 81 laboratories submitted 144 baseline QA tests. Of these, 34% did not initially meet the passing criteria, largely because of poor test-retest reproducibility. Among all QA tests submitted to the core laboratory, 159 unique volunteers had exercise data that met the criteria to be entered into the final normative VO2 reference dataset. Within this dataset, the mean coefficient of variation for VO2 between the test and retest was 5.1%. CONCLUSION:A standardized QA procedure can be used to identify aberrant data and minimize the variability of VO2 measured in a clinical trial or the routine evaluation of patients.
journal_name
J Card Failjournal_title
Journal of cardiac failureauthors
Brawner CA,Ehrman JK,Aldred H,Schairer JR,Keteyian SJdoi
10.1016/j.cardfail.2008.01.001subject
Has Abstractpub_date
2008-05-01 00:00:00pages
283-9issue
4eissn
1071-9164issn
1532-8414pii
S1071-9164(08)00019-5journal_volume
14pub_type
杂志文章abstract：BACKGROUND:We recently reported that serum levels of pentosidine, one of the well-defined advanced glycation end products (AGE), was an independent prognostic factor for heart failure. Receptor for AGEs (RAGE) is expressed in a variety of tissues, and RAGE has a C-truncated secretory isoform of the receptor protein, te...
journal_title：Journal of cardiac failure
pub_type： 杂志文章
doi：10.1016/j.cardfail.2007.10.019
更新日期：2008-03-01 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:Anemia is associated with higher morbidity and mortality in patients with heart failure (HF), but its implications for heath care costs are not well described. METHODS AND RESULTS:We analyzed data on 1056 patients with symptomatic HF seen at Duke University between 2002 and 2006. Health care costs were obta...
journal_title：Journal of cardiac failure
pub_type： 杂志文章
doi：10.1016/j.cardfail.2009.06.435
更新日期：2009-12-01 00:00:00
abstract：BACKGROUND:Studies have shown that neither ejection fraction nor hemodynamic abnormalities during exercise in chronic heart failure (HF) correlate with symptoms of fatigue and exhaustion. The concept that exercise limitation in patients with chronic HF is due to abnormal hemodynamics during exercise has been revised to...
journal_title：Journal of cardiac failure
pub_type： 杂志文章,评审
doi：10.1016/j.cardfail.2005.03.002
更新日期：2005-09-01 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:Sympathetic adrenergic stimulation and the renin-angiotensin-aldosterone system are highly elevated in right heart failure. We evaluated if treatment with the adrenergic receptor blocker bisoprolol or the angiotensin II receptor blocker losartan could prevent the progression of right ventricular (RV) hypertr...
journal_title：Journal of cardiac failure
pub_type： 杂志文章
doi：10.1016/j.cardfail.2014.08.003
更新日期：2014-11-01 00:00:00
abstract：BACKGROUND:Fluid overload is common in heart failure (HF) and obesity; however, the relationship between the extent of intravascular volume expansion and indices such as body mass index (BMI) in obese and non-obese patients with HF has not been defined to address the issue of a HF obesity phenotype. METHODS:Total bloo...
journal_title：Journal of cardiac failure
pub_type： 杂志文章
doi：10.1016/j.cardfail.2019.09.010
更新日期：2020-02-01 00:00:00
abstract：INTRODUCTION:Orthotopic heart transplantation (OHT) is contraindicated in morbidly obese patients with end-stage heart failure (HF), for whom cardiac allograft is the only means for long-term survival. Bariatric surgery may allow them to achieve target body mass index (BMI) for OHT METHODS: From 4/2014 to 12/2018, 26 m...
journal_title：Journal of cardiac failure
pub_type： 杂志文章
doi：10.1016/j.cardfail.2020.04.020
更新日期：2020-11-01 00:00:00
abstract：BACKGROUND:Ultrafiltration (UF) can rapidly and predictably remove extracellular and intravascular fluid volume. To date, assessment of UF in patients with cardiovascular disease has been confined to short- and medium-term studies in patients with a principal diagnosis of acute heart failure. METHODS:In-hospital and l...
journal_title：Journal of cardiac failure
pub_type： 杂志文章
doi：10.1016/j.cardfail.2008.02.003
更新日期：2008-08-01 00:00:00
abstract：BACKGROUND:This is the first study to examine the effect of acute (24-hour) beta-blocker withholding on ventilatory efficiency in patients with advanced chronic heart failure (CHF) during maximal incremental treadmill cardiopulmonary exercise test. METHODS AND RESULTS:Seventeen CHF patients were studied either 3 hours...
journal_title：Journal of cardiac failure
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.cardfail.2010.02.006
更新日期：2010-07-01 00:00:00
abstract：BACKGROUND:Increased serum leptin concentration has been linked to increased ventilation in patients with mild heart failure (HF). However, in animal models the absence of leptin has also been associated with increased ventilation. This study evaluated the relationship of circulating leptin concentration with exercise ...
journal_title：Journal of cardiac failure
pub_type： 杂志文章
doi：10.1016/j.cardfail.2013.10.004
更新日期：2013-11-01 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: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:Cachexia in chronic heart failure carries a poor prognosis, but little is known about the influence of body mass on the prognosis of noncachectic heart failure patients. METHODS:We studied 589 consecutive chronic heart failure patients followed for at least a year, in whom there were accurate baseline data ...
journal_title：Journal of cardiac failure
pub_type： 杂志文章
doi：10.1054/jcaf.2003.4
更新日期：2003-02-01 00:00:00
abstract：BACKGROUND:Digitalis glycosides are known to improve the hemodynamic and neurohormonal perturbations that contribute to heart failure (HF)-induced renal dysfunction (RD). The objective of this study was to determine if randomization to digoxin is associated with improvement in renal function (IRF) and to evaluate if pa...
journal_title：Journal of cardiac failure
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.cardfail.2013.03.002
更新日期：2013-05-01 00:00:00
abstract：BACKGROUND:In patients with pulmonary arterial hypertension (PAH) the relationship between hemodynamic impairment experienced during daily activity and that during exercise testing is not known. METHODS AND RESULTS:Ten PAH patients received an implantable hemodynamic monitor that continuously recorded and stored right...
journal_title：Journal of cardiac failure
pub_type： 杂志文章
doi：10.1016/j.cardfail.2014.04.019
更新日期：2014-07-01 00:00:00
abstract：BACKGROUND:Myocarditis complicated by cardiogenic shock remains a complex problem. The use of acute mechanical circulatory support devices for cardiogenic shock is growing. We explored the utility of Impella transvalvular microaxial flow catheters in the setting of myocarditis with cardiogenic shock. METHODS AND RESUL...
journal_title：Journal of cardiac failure
pub_type： 杂志文章,多中心研究
doi：10.1016/j.cardfail.2018.09.007
更新日期：2018-10-01 00:00:00
abstract：BACKGROUND:Tissue kallikrein is a serine proteinase that generates the vasoactive kinin peptide, which produces vasodilatory, angiogenic, and antiapoptotic effects. In this study, we investigated the effect of a stable supply of kallikrein and kinin on ventricular remodeling and blood vessel growth in rats after myocar...
journal_title：Journal of cardiac failure
pub_type： 杂志文章
doi：10.1016/j.cardfail.2007.04.009
更新日期：2007-09-01 00:00:00
abstract：BACKGROUND:The proinflammatory cytokines have been implicated in the pathogenesis of heart failure. Recent studies have shown that beta-adrenergic blockade can modulate cytokine production. This study investigates the different impact of different degrees of sympathetic antagonism on circulating levels of cytokines in ...
journal_title：Journal of cardiac failure
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/j.cardfail.2004.07.006
更新日期：2005-04-01 00:00:00
abstract：BACKGROUND:Numerous models predicting the risk of incident heart failure (HF) have been developed; however, evidence of their methodological rigor and reporting remains unclear. This study critically appraises the methods underpinning incident HF risk prediction models. METHODS AND RESULTS:EMBASE and PubMed were searc...
journal_title：Journal of cardiac failure
pub_type： 杂志文章,评审
doi：10.1016/j.cardfail.2017.03.005
更新日期：2017-09-01 00:00:00
abstract：BACKGROUND:Epidemiological studies typically diagnose heart failure (HF) at the time of hospitalization, and have not evaluated the prevalence of HF symptoms in CKD patients without a prior HF diagnosis. METHODS AND RESULTS:We modified the Kansas City Cardiomyopathy Questionnaire (KCCQ) to detect and quantify symptoms...
journal_title：Journal of cardiac failure
pub_type： 杂志文章
doi：10.1016/j.cardfail.2010.08.009
更新日期：2011-01-01 00:00:00
abstract：BACKGROUND:The present study examined the influence of rapid intravenous fluid loading (RFL) on airway structure and pulmonary vascular volumes using computed tomography imaging and the subsequent impact on pulmonary function in healthy adults (n = 16). METHODS AND RESULTS:Total lung capacity (DeltaTLC = -6%), forced ...
journal_title：Journal of cardiac failure
pub_type： 杂志文章
doi：10.1016/j.cardfail.2009.08.005
更新日期：2010-02-01 00:00:00
abstract：:Heart failure (HF) is an increasingly common syndrome associated with high mortality and economic burden, and there has been a paucity over the past decade of new pharmacotherapies that improve outcomes. However, recent data from a large randomized controlled trial compared the novel agent LCZ696, a dual-acting angiot...
journal_title：Journal of cardiac failure
pub_type： 杂志文章,评审
doi：10.1016/j.cardfail.2015.07.008
更新日期：2015-09-01 00:00:00
abstract：BACKGROUND:A greater understanding of how beliefs and perceptions inform LVAD placement refusals can help ensure that standards for informed decision making are met. We report on the factors that influence refusal and what accounts for changes in decliners' decision-making process when, and if, that occurs. METHOD AND...
journal_title：Journal of cardiac failure
pub_type： 杂志文章
doi：10.1016/j.cardfail.2015.06.008
更新日期：2015-10-01 00:00:00
abstract：:The authors have previously shown that the resistance ratio (RR) is increased in patients with congestive heart failure (CHF), and that the patients with the highest RRs have an increased mortality. The authors hypothesized that CHF patients with the lowest maximum oxygen consumption and the most impaired Weber functi...
journal_title：Journal of cardiac failure
pub_type： 杂志文章
doi：10.1016/1071-9164(94)90005-1
更新日期：1994-10-01 00:00:00
abstract：BACKGROUND:Empirical evidence supporting the benefits of dietary recommendations for patients with advanced heart failure is scarce. We prospectively evaluated the relation of dietary habits to pre-transplant clinical outcomes in the multisite observational Waiting for a New Heart Study. METHODS AND RESULTS:A total of...
journal_title：Journal of cardiac failure
pub_type： 杂志文章,多中心研究
doi：10.1016/j.cardfail.2013.02.004
更新日期：2013-04-01 00:00:00
abstract：BACKGROUND:In chronic heart failure (CHF), persistent autonomic derangement and neurohumoral activation cause structural end-organ damage, decrease exercise capacity, and reduce quality of life. Beneficial effects of pharmacotherapy and of exercise training in CHF have been documented at various functional and structur...
journal_title：Journal of cardiac failure
pub_type： 杂志文章,评审
doi：10.1016/j.cardfail.2006.12.006
更新日期：2007-05-01 00:00:00
abstract：BACKGROUND:Survival of patients with congenital heart defects including increased right ventricular pressure load (ie, tetralogy of Fallot) or pulmonary hypertension is dependent on the function of the right ventricle (RV). RV remodeling has several effects with progressive transition from compensated status to heart f...
journal_title：Journal of cardiac failure
pub_type： 杂志文章
doi：10.1016/j.cardfail.2020.02.006
更新日期：2020-07-01 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：BACKGROUND:Insulin resistance is present in the setting of congestive heart failure. Glucagon-like peptide-1 (GLP-1) is a naturally occurring incretin with both insulinotropic and insulinomimetic properties. METHODS AND RESULTS:We investigated the safety and efficacy of a 5-week infusion of GLP-1 (2.5 pmol/kg/min) add...
journal_title：Journal of cardiac failure
pub_type： 杂志文章
doi：10.1016/j.cardfail.2006.08.211
更新日期：2006-12-01 00:00:00
