Abstract:
:The aim of this investigation was to determine the difference in accuracy between two frequently published noninvasive indicators of severity of coronary artery disease (exercise-induced ST segment depression and heart rate-adjusted ST depression [ST/HR index]). The study was designed as a survey of consecutive patients undergoing exercise electrocardiography and coronary angiography. There were a total of 2,270 patients without prior myocardial infarction or cardiac valvular disease referred for angiography from eight institutions in three countries; 401 of these patients had triple-vessel or left main coronary artery disease. The sensitivities of ST depression and ST/HR index in detecting triple-vessel or left main coronary artery disease were, respectively, 75% and 78% (p = 0.08) at cut point values where their specificities were equal (64%). This small increase in the accuracy of the ST/HR index was evident only at peak exercise heart rates below the median value of 132 beats/min, where the sensitivities of ST depression and ST/HR index were 73% and 76% (p = 0.03), respectively, at cut point values corresponding to a specificity of 60%. These results were consistent at all eight participating institutions. The increase in accuracy achieved by dividing exercise-induced ST depression by heart rate is small and confined exclusively to a low exercise heart rate. This lack of superiority cannot be generalized to all methods of heart rate adjustment.
journal_name
J Am Coll Cardioljournal_title
Journal of the American College of Cardiologyauthors
Bobbio M,Detrano R,Schmid JJ,Janosi A,Righetti A,Pfisterer M,Steinbrunn W,Guppy KH,Abi-Mansour P,Deckers JWdoi
10.1016/0735-1097(92)90044-nsubject
Has Abstract,Author List Incompletepub_date
1992-01-01 00:00:00pages
11-8issue
1eissn
0735-1097issn
1558-3597pii
0735-1097(92)90044-Njournal_volume
19pub_type
临床试验,杂志文章,多中心研究abstract:OBJECTIVES:We administered pilsicainide chloride, a class Ic pure sodium channel blocker, to patients with Brugada syndrome (BS) and evaluated the occurrence of ventricular arrhythmia (VA) and T-wave alternans (TWA). BACKGROUND:Ventricular arrhythmia and TWA are sometimes induced by a sodium channel blocker challenge ...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/j.jacc.2003.06.004
更新日期:2003-11-05 00:00:00
abstract:OBJECTIVES:This study sought to analyze the outcomes of revascularization procedures in the treatment of allograft coronary disease. BACKGROUND:Allograft vasculopathy is the main factor limiting survival of heart transplant recipients. Because no medical therapy prevents allograft atherosclerosis, and retransplantatio...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,多中心研究
doi:10.1016/0735-1097(95)00124-i
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abstract:OBJECTIVES:This study was designed to determine whether atrial natriuretic peptide and skeletal alpha-actin messenger RNAs (mRNAs) are co-localized in ventricular myocytes of patients with dilated cardiomyopathy. BACKGROUND:Atrial natriuretic peptide and skeletal alpha-actin are known as augmented genes with cardiac h...
journal_title:Journal of the American College of Cardiology
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doi:10.1016/0735-1097(95)00145-p
更新日期:1995-07-01 00:00:00
abstract::The complexity of the events that culminate in intimal proliferation after arterial injury and similarities between this response and benign neoplasia suggest that conventional medical therapies will continue to be unsuccessful in preventing recurrent stenosis after percutaneous coronary revascularization. By preventi...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,评审
doi:10.1016/0735-1097(91)90948-9
更新日期:1991-05-01 00:00:00
abstract:OBJECTIVES:We examined the incidence of pulmonary embolism after cardiac surgery. BACKGROUND:Because venous thromboembolism is considered to be an uncommon complication after cardiac surgery, its incidence was documented in a consecutive series of 1,033 patients who underwent cardiac surgery over a 5-year period. MET...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/0735-1097(93)90358-8
更新日期:1993-03-15 00:00:00
abstract:OBJECTIVES:The goal of this study was to test the hypothesis that induction of an immune response to heat shock protein (Hsp) 70 would increase intimal thickening in a rat carotid-injury model. BACKGROUND:Restenosis resulting from intimal thickening poses a major limitation to the long-term success of coronary angiopl...
journal_title:Journal of the American College of Cardiology
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doi:10.1016/s0735-1097(01)01579-0
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abstract:OBJECTIVES:The purpose of this study was to clarify the impact of sex-related differences in transcatheter aortic valve implantation (TAVI) for high-risk patients with severe aortic stenosis. BACKGROUND:Although TAVI is becoming a mature technique, the impact of sex differences remains unclear. METHODS:The TAVI patie...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/j.jacc.2011.10.877
更新日期:2012-02-07 00:00:00
abstract:OBJECTIVES:This study sought to determine the incidence of aspirin nonresponsiveness in addition to clopidogrel nonresponsiveness and whether this association identifies patients at an increased risk of drug-eluting stent (DES) thrombosis. BACKGROUND:Nonresponsiveness to clopidogrel is a predictor of DES thrombosis. N...
journal_title:Journal of the American College of Cardiology
pub_type: 临床试验,杂志文章
doi:10.1016/j.jacc.2008.05.032
更新日期:2008-08-26 00:00:00
abstract::Intermediate-risk (submassive) pulmonary embolism (PE) describes normotensive patients with evidence of right ventricular compromise, whereas high-risk (massive) PE comprises those who have experienced hemodynamic decompensation with hypotension, cardiogenic shock, or cardiac arrest. Together, these 2 syndromes repres...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,评审
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更新日期:2020-11-03 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
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更新日期:2007-09-18 00:00:00
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journal_title:Journal of the American College of Cardiology
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更新日期:1992-11-15 00:00:00
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pub_type: 杂志文章,随机对照试验
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更新日期:2014-06-24 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,评审
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更新日期:2019-11-19 00:00:00
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更新日期:2002-04-03 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/0735-1097(89)90499-3
更新日期:1989-02-01 00:00:00
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更新日期:2014-10-07 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/0735-1097(89)90268-4
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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
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更新日期:2010-11-16 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/0735-1097(91)90651-o
更新日期:1991-06-01 00:00:00
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journal_title:Journal of the American College of Cardiology
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更新日期:2007-12-18 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,评审
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更新日期:2005-11-01 00:00:00
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更新日期:2013-07-23 00:00:00
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更新日期:2010-07-27 00:00:00
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journal_title:Journal of the American College of Cardiology
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journal_title:Journal of the American College of Cardiology
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更新日期:1993-01-01 00:00:00
abstract:OBJECTIVES:We investigated the role of SH2-domain containing phosphatase-1 (SHP-1) in endothelial reduced nicotinamide adenine dinucleotide (phosphate) (NAD[P]H)-oxidase-dependent oxidant production. BACKGROUND:Superoxide (O2*-) generation by endothelial NAD(P)H-oxidase promotes endothelial dysfunction and atheroscler...
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更新日期:2005-05-17 00:00:00
abstract:OBJECTIVES:The hypothesis of this study was that evaluation of myocardial flow and metabolism using nitrogen-13 (N-13) ammonia kinetic modeling with dynamic positron emission tomographic (PET) imaging could identify regions of myocardial scar and viable myocardium as defined by fluorine-18 fluorodeoxyglucose (F-18 FDG)...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
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更新日期:1997-03-01 00:00:00
abstract::Kawasaki disease (KD) is an acute, self-limited vasculitis that typically occurs in young children and was first described by Japanese pediatrician Tomisaku Kawasaki in 1967. Although originally thought to be a rare condition, KD has become the most common cause of acquired heart disease in the pediatric age group in ...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.jacc.2009.04.102
更新日期:2009-11-17 00:00:00
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journal_title:Journal of the American College of Cardiology
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更新日期:2002-06-19 00:00:00
abstract:OBJECTIVES:The purpose of this study was to investigate whether therapy with nitroglycerin (GTN) would lead to abnormal coronary artery responses to the endothelium-dependent vasodilator acetylcholine. BACKGROUND:Nitroglycerin therapy is associated with specific biochemical changes in the vasculature that may lead to ...
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
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更新日期:1998-12-01 00:00:00