The challenge of cardiomyopathy.

abstract：OBJECTIVES:We conducted an economic analysis to assess the extent to which a reduction in adverse drug reactions induced by low osmolality compared with high osmolality contrast media during diagnostic angiocardiography would result in savings to hospitals, society and third-party payers that would offset the substanti...

journal_title：Journal of the American College of Cardiology

authors： Powe NR,Davidoff AJ,Moore RD,Brinker JA,Anderson GF,Litt MR,Gopalan R,Graziano SL,Steinberg EP

更新日期：1993-06-01 00:00:00

abstract：OBJECTIVES:We evaluated the value of coronary flow reserve (CFR), as determined by transthoracic Doppler echocardiography (TTDE), for physiologic assessment of coronary artery stenosis severity, and we compared TTDE measurements with those obtained by exercise thallium-201 (Tl-201) single-photon emission computed tomog...

journal_title：Journal of the American College of Cardiology

authors： Daimon M,Watanabe H,Yamagishi H,Muro T,Akioka K,Hirata K,Takeuchi K,Yoshikawa J

更新日期：2001-04-01 00:00:00

abstract：:To simplify and clarify the methods of obtaining attenuation-corrected equilibrium radionuclide angiographic estimates of absolute left ventricular volumes, 27 patients who also had biplane contrast cineangiography were evaluated. Background-corrected left ventricular end-diastolic and end-systolic counts were obtaine...

journal_title：Journal of the American College of Cardiology

authors： Starling MR,Dell'Italia LJ,Walsh RA,Little WC,Benedetto AR,Nusynowitz ML

更新日期：1984-03-01 00:00:00

abstract：:Major clinical uses of the new Doppler color flow mapping technologies involve the imaging of disturbed flow through cardiac defects or valves. Nevertheless, there is little general understanding of the determinants of flow and of how flow is imaged by these new systems. This review will attempt to relate the hydrodyn...

journal_title：Journal of the American College of Cardiology

authors： Sahn DJ

更新日期：1988-11-01 00:00:00

abstract：:In a 69 year old woman with a "sticking" Björk-Shiley mitral prosthesis, the diagnosis was suggested by both the two-dimensional and the Doppler ultrasound examinations. In particular, the findings of early diastolic paradoxic septal motion, intermittent delayed opening of the prosthetic disc and variable timing of th...

journal_title：Journal of the American College of Cardiology

authors： Mann DL,Gillam LD,Marshall JE,King ME,Weyman AE

更新日期：1986-10-01 00:00:00

abstract：OBJECTIVES:The goal of this study was to detect transplant arteriopathy (Tx-CHD) by a reduced myocardial perfusion reserve (MPR) and resting endomyocardial/epimyocardial perfusion ratio (Endo/Epi ratio). BACKGROUND:Transplant arteriopathy often lacks clinical symptoms and is the reason for frequent surveillance angiog...

journal_title：Journal of the American College of Cardiology

authors： Muehling OM,Wilke NM,Panse P,Jerosch-Herold M,Wilson BV,Wilson RF,Miller LW

更新日期：2003-09-17 00:00:00

abstract：OBJECTIVES:The aim of this study was to determine if ablation that targets patient-specific atrial fibrillation (AF)-sustaining substrates (rotors or focal sources) is more durable than trigger ablation alone at preventing late AF recurrence. BACKGROUND:Late recurrence substantially limits the efficacy of pulmonary ve...

journal_title：Journal of the American College of Cardiology

authors： Narayan SM,Baykaner T,Clopton P,Schricker A,Lalani GG,Krummen DE,Shivkumar K,Miller JM

更新日期：2014-05-06 00:00:00

abstract：OBJECTIVES:The purpose of this study is to evaluate the feasibility in detecting blood flow in the left anterior descending coronary artery (LAD) using transthoracic color Doppler (CD) imaging (in both second harmonic and fundamental mode) along with contrast enhancement and to verify if this new noninvasive method alo...

journal_title：Journal of the American College of Cardiology

authors： Caiati C,Zedda N,Montaldo C,Montisci R,Iliceto S

更新日期：1999-07-01 00:00:00

abstract：OBJECTIVES:The aim of this study was to examine whether restrictive right ventricular (RV) physiology (the presence of antegrade pulmonary arterial flow in late diastole) occurred in patients with moderate to severe isolated pulmonary valvular stenosis (PVS) and to estimate its prevalence and relationship to RV functio...

journal_title：Journal of the American College of Cardiology

authors： Lam YY,Kaya MG,Goktekin O,Gatzoulis MA,Li W,Henein MY

更新日期：2007-10-09 00:00:00

abstract：OBJECTIVES:The purpose of this study was to examine the effect of intracoronary radiation therapy (IRT) in diabetic patients with in-stent restenosis (ISR). BACKGROUND:Diabetic patients are at an increased risk for restenosis, repeat revascularization procedures and late mortality after percutaneous coronary intervent...

journal_title：Journal of the American College of Cardiology

authors： Gruberg L,Waksman R,Ajani AE,Kim HS,White RL,Pinnow EE,Satler LF,Pichard AD,Kent KM,Lindsay J Jr

更新日期：2002-06-19 00:00:00

abstract：OBJECTIVES:We sought to identify age-related differences in the ventricular response of patients after bidirectional cavopulmonary anastomosis (CPA) and to compare changes in the ventricular response among children < 3 years of age who underwent CPA with that of age-matched control subjects who had a systemic to pulmon...

journal_title：Journal of the American College of Cardiology

authors： Forbes TJ,Gajarski R,Johnson GL,Reul GJ,Ott DA,Drescher K,Fisher DJ

更新日期：1996-11-01 00:00:00

abstract：:The Western Washington Intravenous Streptokinase in Acute Myocardial Infarction Trial randomized 368 patients with symptoms and signs of acute myocardial infarction of less than 6 h duration to either conventional care or 1.5 million units of intravenous streptokinase. The mean time to randomization was 209 min and 52...

journal_title：Journal of the American College of Cardiology

authors： Ritchie JL,Cerqueira M,Maynard C,Davis K,Kennedy JW

更新日期：1988-04-01 00:00:00

abstract：OBJECTIVES:We present a new method in which a priori knowledge of the blood velocity fields within the boundary layer at the vessel wall, combined with acquisition of high resolution magnetic resonance imaging (MRI) blood velocity data, allow exact modeling at the subpixel level. BACKGROUND:Methods are lacking for acc...

journal_title：Journal of the American College of Cardiology

authors： Oyre S,Ringgaard S,Kozerke S,Paaske WP,Erlandsen M,Boesiger P,Pedersen EM

更新日期：1998-07-01 00:00:00

abstract：:A total of 1,275 elderly patients (70 years and older) underwent coronary artery bypass alone from 1970 to 1981. The percent of elderly patients who underwent coronary bypass surgery alone increased from 2.04% in 1971 to 8.2% in 1981. Most of the patients had severe, disabling or unstable angina pectoris. The overall ...

journal_title：Journal of the American College of Cardiology

authors： Elayda MA,Hall RJ,Gray AG,Mathur VS,Cooley DA

更新日期：1984-06-01 00:00:00

abstract：OBJECTIVES:This study examined the relation between left atrial spontaneous echo contrast, hematologic variables and thrombo-embolism in patients with nonvalvular atrial fibrillation. BACKGROUND:Left atrial spontaneous echo contrast is associated with left atrial stasis and thromboembolism in patients with nonvalvular...

journal_title：Journal of the American College of Cardiology

authors： Black IW,Chesterman CN,Hopkins AP,Lee LC,Chong BH,Walsh WF

更新日期：1993-02-01 00:00:00

abstract：BACKGROUND:Coronary computed tomography angiography (CTA) is increasingly being used for evaluation of coronary artery disease (CAD). As a result of the widely reported potential of carcinogenic risk from x-ray based examinations, many strategies have been developed for dose reduction with CTA. OBJECTIVES:The purpose ...

journal_title：Journal of the American College of Cardiology

authors： Stehli J,Fuchs TA,Bull S,Clerc OF,Possner M,Buechel RR,Gaemperli O,Kaufmann PA

更新日期：2014-08-26 00:00:00

abstract：OBJECTIVES:The goal of this study was to investigate whether the "warm-up" effect in angina protects against ischemic left ventricular (LV) dysfunction. BACKGROUND:After exercise, patients with coronary disease demonstrate persistent myocardial dysfunction, which may represent stunning, as well as warm-up protection a...

journal_title：Journal of the American College of Cardiology

authors： Kelion AD,Webb TP,Gardner MA,Ormerod OJ,Banning AP

更新日期：2001-03-01 00:00:00

abstract：OBJECTIVES:We tested the hypothesis that CD40 ligand (CD40L) induces a prothrombotic state by enhancing oxidative stress. BACKGROUND:Patients with hypercholesterolemia show an ongoing prothrombotic state, but the underlying mechanism is still unclear. METHODS:Circulating levels of the soluble form of CD40L (sCD40L), ...

journal_title：Journal of the American College of Cardiology

authors： Sanguigni V,Ferro D,Pignatelli P,Del Ben M,Nadia T,Saliola M,Sorge R,Violi F

更新日期：2005-01-04 00:00:00

abstract：OBJECTIVES:We evaluated telomerase activity in circulating polymorphonuclear neutrophils (PMN) and in PMN isolated from coronary atherosclerotic plaques by a novel approach. BACKGROUND:Delayed apoptosis of PMN have been demonstrated in unstable angina (UA). These cells have a finite lifespan with low telomerase activi...

journal_title：Journal of the American College of Cardiology

authors： Narducci ML,Grasselli A,Biasucci LM,Farsetti A,Mulè A,Liuzzo G,La Torre G,Niccoli G,Mongiardo R,Pontecorvi A,Crea F

更新日期：2007-12-18 00:00:00

abstract：OBJECTIVES:The purpose of this study was to assess the effects of ramipril on left ventricular mass (LVM) and function in vascular disease patients with controlled blood pressure (BP) and with preserved left ventricular ejection fraction (LVEF). BACKGROUND:Increased LVM and left ventricular (LV) volume and decreased L...

journal_title：Journal of the American College of Cardiology

authors： Lonn E,Shaikholeslami R,Yi Q,Bosch J,Sullivan B,Tanser P,Magi A,Yusuf S

更新日期：2004-06-16 00:00:00

abstract：:The objectives of this study were to evaluate the effects of alterations in loading induced by lower body negative pressure on aortic blood flow velocity and acceleration. Twenty-seven normal men were studied during various levels of lower body negative pressure (0 to -60 mm Hg) during which echocardiographic, Doppler...

journal_title：Journal of the American College of Cardiology

authors： Berk MR,Evans J,Knapp C,Harrison MR,Kotchen T,DeMaria AN

更新日期：1990-04-01 00:00:00

abstract：OBJECTIVES:The present study examined whether sudden death in patients with hypertrophic cardiomyopathy occurred with a particular pattern of frequency throughout the day. BACKGROUND:Previous investigators have shown a circadian distribution in the occurrence of sudden death and other cardiovascular events in patients...

journal_title：Journal of the American College of Cardiology

authors： Maron BJ,Kogan J,Proschan MA,Hecht GM,Roberts WC

更新日期：1994-05-01 00:00:00

abstract：OBJECTIVES:This study sought to ascertain whether high-dose allopurinol causes regression of left ventricular mass (LVM) in patients with type 2 diabetes mellitus (T2DM). BACKGROUND:Left ventricular hypertrophy (LVH) is common in T2DM and contributes to patients' high cardiovascular (CV) event rate. Oxidative stress (...

journal_title：Journal of the American College of Cardiology

authors： Szwejkowski BR,Gandy SJ,Rekhraj S,Houston JG,Lang CC,Morris AD,George J,Struthers AD

更新日期：2013-12-17 00:00:00

abstract：:To date, attempted balloon dilation of stenotic standard Blalock-Taussig shunts has been largely disappointing. It has been suggested that this may be due to the use of balloons of insufficient diameter. Balloon dilation of stenotic Blalock-Taussig shunts was attempted with use of relatively large balloons in five pat...

journal_title：Journal of the American College of Cardiology

authors： Marks LA,Mehta AV,Marangi D

更新日期：1991-08-01 00:00:00

abstract：OBJECTIVES:To examine the relationship between the persistence of ST segment depression in leads V5-V6 after Q-wave anterior wall myocardial infarction (MI) and the filling pattern of the left ventricle (LV). BACKGROUND:Precordial ST segment depression predominantly in leads V5-V6 is associated with increased in-hospi...

journal_title：Journal of the American College of Cardiology

authors： Assali A,Sclarovsky S,Herz I,Vaturi M,Gilad I,Solodky A,Zafrir N,Adler Y,Sagie A,Birnbaum Y,Hasdai D

更新日期：2000-02-01 00:00:00

abstract：OBJECTIVES:This study sought to compare the safety, efficacy and clinical utility of the Amplatzer septal occluder (ASO) for closure of secundum atrial septal defect (ASD) with surgical closure. BACKGROUND:The clinical utility of a device such as the ASO can only be judged against the results of contemporaneous surger...

journal_title：Journal of the American College of Cardiology

authors： Du ZD,Hijazi ZM,Kleinman CS,Silverman NH,Larntz K,Amplatzer Investigators.

更新日期：2002-06-05 00:00:00

abstract：OBJECTIVES:We sought to evaluate approaches used to control rate, the effectiveness of rate control, and switches from one drug class to another in the Atrial Fibrillation Follow-up Investigation of Rhythm Management (AFFIRM) study. BACKGROUND:The AFFIRM study showed that atrial fibrillation (AF) can be treated effect...

journal_title：Journal of the American College of Cardiology

authors： Olshansky B,Rosenfeld LE,Warner AL,Solomon AJ,O'Neill G,Sharma A,Platia E,Feld GK,Akiyama T,Brodsky MA,Greene HL,AFFIRM Investigators.

更新日期：2004-04-07 00:00:00

abstract：OBJECTIVES:the purpose of this study was to evaluate the association of the percentage of platelet inhibitory response to clopidogrel as assessed by modified thromboelastography with bleeding and transfusion requirement after off-pump coronary artery bypass graft (OPCABG) surgery. BACKGROUND:Interindividual variabilit...

journal_title：Journal of the American College of Cardiology

authors： Kwak YL,Kim JC,Choi YS,Yoo KJ,Song Y,Shim JK

更新日期：2010-12-07 00:00:00

abstract：:The St. Jude valve is a new bileaflet disc cardiac valve prosthesis designed to avoid some of the hemodynamic drawbacks of other prostheses. The in vivo flow characteristics of the St. Jude aortic valve (42 patients) were studied and compared with those of three other commonly used aortic prostheses. Björk-Shiley (12 ...

journal_title：Journal of the American College of Cardiology

authors： Gray RJ,Chaux A,Matloff JM,DeRobertis M,Raymond M,Stewart M,Yoganathan A

更新日期：1984-02-01 00:00:00

abstract：:The effects of coronary revascularization by percutaneous transluminal coronary angioplasty or coronary bypass grafting, or both, on survival were evaluated in 81 patients with cardiogenic shock complicating acute myocardial infarction. Thirty-two patients had successful revascularization and 49 patients had unsuccess...

journal_title：Journal of the American College of Cardiology

authors： Moosvi AR,Khaja F,Villanueva L,Gheorghiade M,Douthat L,Goldstein S

更新日期：1992-04-01 00:00:00