Abstract:
OBJECTIVES:The authors investigated predictors of left ventricular ejection fraction (LVEF) super-response to cardiac resynchronization therapy with defibrillator (CRT-D) and whether super-response translated into improved event-free survival in patients with mildly symptomatic heart failure (HF). BACKGROUND:Few data exist on predictors of super-response to CRT-D and associated morbidity and mortality in mildly symptomatic HF populations. METHODS:Patients were assigned to CRT-D with paired echocardiograms at baseline and at 12 months (n = 752). Super-response was defined by the top quartile of LVEF change. Best-subset regression analysis identified predictors of LVEF super-response. Kaplan-Meier survival analysis and Cox proportional hazards regression were performed to investigate associations of response category with development of nonfatal HF event or all-cause death. RESULTS:All 191 super-responders experienced an LVEF increase of ≥14.5% (mean LVEF increase 17.5 ± 2.7%). Six predictors were associated with LVEF super-response to CRT-D therapy: female sex (odds ratio [OR]: 1.96; p = 0.001), no prior myocardial infarction (OR: 1.80; p = 0.005), QRS duration ≥150 ms (OR: 1.79; p = 0.007), left bundle branch block (OR: 2.05; p = 0.006), body mass index <30 kg/m(2) (OR: 1.51; p = 0.035), and smaller baseline left atrial volume index (OR: 1.47; p < 0.001). Cumulative probability of HF or all-cause death at 2 years was 4% in super-responders, 11% in responders, and 26% in hypo-responders (log-rank p < 0.001 overall). In multivariate analysis, hyporesponse was associated with increased risk of HF or all-cause death, compared with super-response (hazard ratio: 5.25; 95% confidence interval: 2.01 to 13.74; p = 0.001). CONCLUSIONS:Six baseline factors predicted LVEF super-response in CRT-D-treated patients with mild HF. Super-response was associated with reduced risk of subsequent cardiac events. (Multicenter Automatic Defibrillator Implantation Trial With Cardiac Resynchronization Therapy [MADIT-CRT]; NCT00180271).
journal_name
J Am Coll Cardioljournal_title
Journal of the American College of Cardiologyauthors
Hsu JC,Solomon SD,Bourgoun M,McNitt S,Goldenberg I,Klein H,Moss AJ,Foster E,MADIT-CRT Executive Committee.doi
10.1016/j.jacc.2012.01.065subject
Has Abstractpub_date
2012-06-19 00:00:00pages
2366-73issue
25eissn
0735-1097issn
1558-3597pii
S0735-1097(12)01243-0journal_volume
59pub_type
临床试验,杂志文章abstract::Installation of automated external defibrillators (AEDs) in schools has been associated with increased survival after sudden cardiac arrest. An authoritative academic research database was interrogated to identify all current state statutes pertaining to AEDs in schools. As of February 2016, 17 of 50 U.S. states (34%)...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.jacc.2017.01.033
更新日期:2017-04-04 00:00:00
abstract::Myocardial thallium-201 scintigraphy is being increasingly employed as a method for assessing the efficacy of coronary reperfusion in acute myocardial infarction. New thallium uptake after intracoronary tracer administration after successful recanalization indicates that nutrient blood flow has been successfully resto...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/s0735-1097(87)80062-1
更新日期:1987-03-01 00:00:00
abstract:OBJECTIVES:This study was designed to establish the direct vascular effects of apelin in vivo in man. BACKGROUND:Apelin is the endogenous ligand for the previously orphaned G-protein-coupled receptor, APJ. This novel pathway is widely expressed in the cardiovascular system and is emerging as an important mediator of c...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/j.jacc.2008.06.013
更新日期:2008-09-09 00:00:00
abstract:OBJECTIVES:To test the hypothesis that the cardiac insulin-like growth factor-1 (IGF-1) system is up-regulated in the failing heart, we measured the pericardial (cardiac) and plasma (circulating) IGF-1 levels in coronary artery disease patients. BACKGROUND:Local IGF-1 systems are regulated differently from the systemi...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/j.jacc.2006.06.048
更新日期:2006-10-03 00:00:00
abstract::The American Board of Internal Medicine has called on directors of cardiology training programs to establish systems to evaluate, document and substantiate those components of overall clinical competence considered essential for certification in the subspecialty. Many of these can be assessed only by repeated direct o...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/0735-1097(88)90307-5
更新日期:1988-06-01 00:00:00
abstract:OBJECTIVES:The purpose of this study was to validate existing 12-lead electrocardiographic (ECG) ST-segment elevation myocardial infarction (STEMI) criteria in the diagnosis of acute myocardial infarction (AMI) and the application of similar ST-segment depression (STEMI-equivalent) criteria with contrast-enhanced cardi...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/j.jacc.2007.04.090
更新日期:2007-09-11 00:00:00
abstract:OBJECTIVES:The purpose of this study was to objectively quantify the similarity of 12-lead electrocardiogram (ECG) waveforms using two quantitative metrics, the correlation coefficient (CORR) and the mean absolute deviation (MAD). BACKGROUND:Comparison of the 12-lead ECG morphology between ventricular tachycardia (VT)...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/s0735-1097(03)00427-3
更新日期:2003-06-04 00:00:00
abstract:OBJECTIVES:The present study was designed to establish possible predictors of unfavorable outcome in infants with pulmonary valve stenosis. BACKGROUND:Balloon pulmonary valvuloplasty is the treatment of choice for typical pulmonary valve stenosis. Patients with dysplastic valves may be less suitable candidates for thi...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/0735-1097(92)90100-2
更新日期:1992-08-01 00:00:00
abstract::Adjusted subcutaneous heparin was used for thromboembolism prophylaxis during 18 pregnancies in 16 women with an artificial heart valve. Oral warfarin was replaced by subcutaneous heparin as soon as pregnancy was confirmed. The dosage of heparin was adjusted to maintain a partial thromboplastin time at 1.5 times the c...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/s0735-1097(86)80116-4
更新日期:1986-07-01 00:00:00
abstract:OBJECTIVES:The objective of this study was to determine the frequency of left atrial thrombus in patients with acute atrial fibrillation. BACKGROUND:It is commonly assumed but unproved that left atrial thrombus in patients with atrial fibrillation begins to form after the onset of atrial fibrillation and that it requi...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/0735-1097(94)00396-8
更新日期:1995-02-01 00:00:00
abstract::The relation among right ventricular preload, afterload and ejection fraction in patients with mitral valve disease has not been well elucidated. In this study, measurements were made of intracardiac pressures and forward cardiac output during cardiac catheterization (n = 43), the ejection fraction by radionuclide ang...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/s0735-1097(84)80278-8
更新日期:1984-06-01 00:00:00
abstract::In a retrospective analysis 139 patients with hypertrophic cardiomyopathy were followed up for 8.9 years (range 1 to 28 years). Patients were divided into two groups: Group 1 consisted of 60 patients with medical therapy and Group 2 of 79 patients with surgical therapy (septal myectomy). Groups 1 and 2 were subdivided...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,评审
doi:10.1016/s0735-1097(10)80176-7
更新日期:1991-03-01 00:00:00
abstract::Relief of left ventricular (LV) outflow obstruction in patients with hypertrophic cardiomyopathy (HCM) and disabling symptoms refractory to maximum medical management has historically been a surgical problem. Surgical septal myectomy permanently abolishes systolic anterior motion of the mitral valve and mitral regurgi...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.jacc.2004.04.063
更新日期:2004-11-16 00:00:00
abstract::The antiarrhythmic effects of verapamil, 17-monochloracetylajmaline, mexiletine and amiodarone were compared in 14 patients with chagasic myocarditis. Drugs and placebo were administered orally in the following order: placebo and verapamil, placebo and 17-monochloracetylajmaline, placebo and mexiletine (1 week each) a...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/s0735-1097(86)80232-7
更新日期:1986-05-01 00:00:00
abstract:OBJECTIVES:We assessed the hypothesis that changes in endothelial vasomotor function in response to optimized therapy for atherosclerotic coronary artery disease predict future cardiovascular events. BACKGROUND:Although endothelial vasomotor dysfunction is a predictor of cardiovascular events, it remains unclear wheth...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/j.jacc.2008.08.074
更新日期:2009-01-27 00:00:00
abstract:OBJECTIVES:This study was designed to prospectively determine, in patients with an acute coronary syndrome, whether the inflammatory marker, C-reactive protein (CRP), measured at hospital admission, discharge, and 1 month later has incremental value to predict outcomes at 1 year. BACKGROUND:The clinical utility of CRP...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.jacc.2008.03.019
更新日期:2008-06-17 00:00:00
abstract:OBJECTIVES:This study investigated the effects of androgens on gene expression in male- and female-donor macrophages. BACKGROUND:Men have more severe coronary disease than women. Androgen exposure increases foam cell formation in male but not female macrophages, and male macrophages express >4-fold more androgen recep...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/j.jacc.2003.07.002
更新日期:2003-10-01 00:00:00
abstract::The results of recatheterization were assessed in a select group of 95 patients enrolled in the Mansfield Scientific Aortic Valvuloplasty Registry to determine whether any procedural or patient-related variables at baseline predicted either initial immediate or follow-up (6.2 +/- 3.3 months) results. At the follow-up ...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/0735-1097(91)90853-2
更新日期:1991-04-01 00:00:00
abstract:BACKGROUND:The optimal systolic blood pressure (SBP) treatment goal is in question, with SPRINT (Systolic Blood Pressure Intervention Trial) suggesting benefit for 120 mm Hg. However, achieving an SBP this low may reduce diastolic blood pressure (DBP) to levels that could compromise myocardial perfusion. OBJECTIVES:Th...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/j.jacc.2016.07.754
更新日期:2016-10-18 00:00:00
abstract:OBJECTIVES:This study aimed to investigate the effect of both history of intermittent atrial tachyarrhythmias (IAT) and in-trial IAT on the risk of heart failure (HF) or death comparing cardiac resynchronization therapy with defibrillator (CRT-D) to implantable cardioverter-defibrillator (ICD) treatment in mildly sympt...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1016/j.jacc.2013.10.074
更新日期:2014-04-01 00:00:00
abstract:OBJECTIVES:This study was directed at developing spatial 62-lead electrocardiogram (ECG) criteria for classification of counterclockwise (CCW) and clockwise (CW) typical atrial flutter (Fl) in patients with and without structural heart disease. BACKGROUND:Electrocardiographic classification of CCW and CW typical atria...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/s0735-1097(00)00549-0
更新日期:2000-04-01 00:00:00
abstract:OBJECTIVES:This study sought to determine the impact of surgical myectomy on long-term survival in hypertrophic cardiomyopathy (HCM). BACKGROUND:Left ventricular (LV) outflow tract obstruction in HCM increases the likelihood of heart failure and cardiovascular death. Although surgical myectomy is the primary treatment...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/j.jacc.2005.02.090
更新日期:2005-08-02 00:00:00
abstract::The utility of using an endurance test as well as a maximal exercise test to assess the effect of amlodipine, a dihydropyridine calcium antagonist, was evaluated in 16 patients with angina pectoris. Amlodipine, 10 mg/day, was compared with placebo in a double blind crossover study. After a 2 week single blind placebo ...
journal_title:Journal of the American College of Cardiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/0735-1097(88)90323-3
更新日期:1988-09-01 00:00:00
abstract:BACKGROUND:Randomized controlled trials comparing short- (≤6 months) with long-term (≥1 year) dual antiplatelet therapy (DAPT) after drug-eluting stent(s) (DES) placement have been insufficiently powered to detect significant differences in the risk of major adverse cardiac events (MACE). OBJECTIVES:This study sought ...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.jacc.2014.12.046
更新日期:2015-03-24 00:00:00
abstract:OBJECTIVES:The aim of this study was to determine the association of SCN5A cardiac sodium (Na(+)) channel mRNA splice variants in white blood cells (WBCs) with risk of arrhythmias in heart failure (HF). BACKGROUND:HF is associated with upregulation of two cardiac SCN5A mRNA splice variants that encode prematurely trun...
journal_title:Journal of the American College of Cardiology
pub_type: 临床试验,杂志文章
doi:10.1016/j.jacc.2014.02.588
更新日期:2014-06-03 00:00:00
abstract:OBJECTIVES:We sought to assess the dynamic temporal course of conduction recovery during and after radiofrequency (RF) catheter ablation of the cavotricuspid isthmus. BACKGROUND:Although cavotricuspid isthmus block is accepted as the best end point of ablation for typical flutter, conduction recovery is thought to und...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/s0735-1097(00)00600-8
更新日期:2000-05-01 00:00:00
abstract::To assess the potential of in vivo nuclear magnetic resonance imaging for the detection of reperfused myocardium, in vivo T2-weighted spin echo images were obtained of dogs at 0.15 tesla. Imaging was done during 3 hours of coronary occlusion (group I), and during 3 hours of coronary occlusion followed by 1 hour of rep...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/s0735-1097(87)80091-8
更新日期:1987-01-01 00:00:00
abstract:OBJECTIVES:We sought to determine the importance of nitric oxide (NO) production in maintaining coronary blood flow during exercise in hearts with collateral-dependent myocardium. BACKGROUND:Coronary collateral vessels demonstrate endothelium-mediated NO-dependent vasodilation in response to agonists such as acetylcho...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/s0735-1097(97)00437-3
更新日期:1998-01-01 00:00:00
abstract:BACKGROUND:Peripartum cardiomyopathy (PPCM) remains a major cause of maternal morbidity and mortality. OBJECTIVES:This study sought to prospectively evaluate recovery of the left ventricular ejection fraction (LVEF) and clinical outcomes in the multicenter IPAC (Investigations of Pregnancy Associated Cardiomyopathy) s...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.jacc.2015.06.1309
更新日期:2015-08-25 00:00:00
abstract::Patients with chronic heart failure (CHF) have a resting restrictive ventilatory defect. Any type of exercise requires patients with CHF to markedly increase their minute ventilation. Patients with chronic obstructive pulmonary disease (COPD) have airflow obstruction that leads to dynamic lung hyperinflation and reduc...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.jacc.2004.03.063
更新日期:2004-08-04 00:00:00