Contribution of myocardium responsible for ventricular tachycardia to abnormalities detected by analysis of signal-averaged ECGs.

abstract：:The loss of coronary vasodilator reserve after ischemia-reperfusion may be due to endothelial injury, and this vascular dysfunction may contribute to functional alterations observed after ischemia. To determine whether endothelial dysfunction occurs after relatively brief periods of moderate low-flow ischemia in vivo,...

journal_title：Circulation

authors： Headrick JP,Angello DA,Berne RM

更新日期：1990-12-01 00:00:00

abstract：BACKGROUND:Enteroviruses (EVs) and adenoviruses (ADVs) have been considered common causes of myocarditis and dilated cardiomyopathy. In the present study, we report on the association of parvovirus B19 (PVB19) genomes in the clinical setting of acute myocarditis. METHODS AND RESULTS:This study included 24 consecutive ...

journal_title：Circulation

authors： Kühl U,Pauschinger M,Bock T,Klingel K,Schwimmbeck CP,Seeberg B,Krautwurm L,Poller W,Schultheiss HP,Kandolf R

更新日期：2003-08-26 00:00:00

abstract：BACKGROUND:The treatment of unstable angina targets the specific pathophysiological thrombotic process at the site of the active culprit lesion. In unstable angina due to a restenotic lesion, smooth muscle cell proliferation and increased vasoreactivity may play a more important role than thrombus formation. Therefore,...

journal_title：Circulation

authors： Doucet S,Malekianpour M,Théroux P,Bilodeau L,Côté G,de Guise P,Dupuis J,Joyal M,Gosselin G,Tanguay JF,Juneau M,Harel F,Nattel S,Tardif JC,Lespérance J

更新日期：2000-03-07 00:00:00

abstract：BACKGROUND:Cardiac transplantation and chronic myocardial infarction interrupt vagal afferent nerve fibers, which originate mainly from the ventricles. Marked abnormalities of reflexes mediated by cardiopulmonary receptors with vagal afferent fibers have been demonstrated after both cardiac transplantation and chronic ...

journal_title：Circulation

authors： Minisi AJ,Cersley TL

更新日期：1994-10-01 00:00:00

abstract：BACKGROUND:Catheter-based intrapericardial (IPC) delivery of therapeutic agents has recently been demonstrated. Paclitaxel is known to inhibit vascular smooth muscle cell proliferation. This study examined the effect of IPC instillation of paclitaxel on neointimal proliferation after balloon overstretch of porcine coro...

journal_title：Circulation

authors： Hou D,Rogers PI,Toleikis PM,Hunter W,March KL

更新日期：2000-09-26 00:00:00

abstract：:Premature opening of the pulmonary valve (opening independent of atrial or ventricular systole) was originally described in a case of sinus of Valsalva rupture into the right atrium. Since that time we have observed five additional cases in which the pulmonary valve opened prematurely. Entities encountered included: 1...

journal_title：Circulation

authors： Wann LS,Weyman AE,Dillon JC,Feigenbaum H

更新日期：1977-01-01 00:00:00

abstract：BACKGROUND:Macrophages in human atherosclerotic plaques produce a family of matrix metalloproteinases (MMPs), which may influence vascular remodeling and plaque disruption. Because oxidized LDL (ox-LDL) is implicated in many proatherogenic events, we hypothesized that ox-LDL would regulate expression of MMP-9 and tissu...

journal_title：Circulation

authors： Xu XP,Meisel SR,Ong JM,Kaul S,Cercek B,Rajavashisth TB,Sharifi B,Shah PK

更新日期：1999-03-02 00:00:00

abstract：BACKGROUND:Brugada syndrome (BrS) primarily associates with the loss of sodium channel function. Previous studies showed features consistent with sodium current (INa) deficit in patients carrying desmosomal mutations, diagnosed with arrhythmogenic cardiomyopathy (or arrhythmogenic right ventricular cardiomyopathy). Exp...

journal_title：Circulation

authors： Cerrone M,Lin X,Zhang M,Agullo-Pascual E,Pfenniger A,Chkourko Gusky H,Novelli V,Kim C,Tirasawadichai T,Judge DP,Rothenberg E,Chen HS,Napolitano C,Priori SG,Delmar M

更新日期：2014-03-11 00:00:00

abstract：BACKGROUND:Right ventricular (RV) function is the major determinant for both functional capacity and survival in patients with pulmonary arterial hypertension (PAH). Despite the recognized clinical importance of preserving RV function, the subcellular mechanisms that govern the transition from a compensated to a decomp...

journal_title：Circulation

authors： Omura J,Habbout K,Shimauchi T,Wu WH,Breuils-Bonnet S,Tremblay E,Martineau S,Nadeau V,Gagnon K,Mazoyer F,Perron J,Potus F,Lin JH,Zafar H,Kiely DG,Lawrie A,Archer SL,Paulin R,Provencher S,Boucherat O,Bonnet S

更新日期：2020-10-13 00:00:00

abstract：BACKGROUND:A mortality follow-up of 12,866 men was conducted 16 years after randomization to special intervention (SI) or usual care (UC) groups of the Multiple Risk Factor Intervention Trial to assess the long-term effect of cardiovascular risk factor intervention on coronary heart disease (CHD), cardiovascular death ...

journal_title：Circulation

authors：

更新日期：1996-09-01 00:00:00

abstract：BACKGROUND:Mesenchymal stem cells (MSCs) are bone marrow stromal cells that are in phase 1 clinical studies of cellular cardiomyoplasty. However, the electrophysiological effects of MSC transplantation have not been studied. Although improvement of ventricular function would represent a positive outcome of MSC transpla...

journal_title：Circulation

authors： Chang MG,Tung L,Sekar RB,Chang CY,Cysyk J,Dong P,Marbán E,Abraham MR

更新日期：2006-04-18 00:00:00

abstract：BACKGROUND:Reperfusion of acutely infarcted myocardium may be beneficial in limiting infarct expansion and ventricular remodeling even if established after the time that salvage of ischemic myocardium is possible. METHODS AND RESULTS:To examine the permanency, time course, and mechanism of this effect of late reperfus...

journal_title：Circulation

authors： Boyle MP,Weisman HF

更新日期：1993-12-01 00:00:00

abstract：BACKGROUND:The aim of this study was to determine whether antianginal medications affect the prognostic value of pharmacological stress echocardiography. METHODS AND RESULTS:From the EPIC-EDIC Data Bank, 7333 patients (5452 men; age; 59+/-10 years) underwent pharmacological stress echocardiography with either high-dos...

journal_title：Circulation

authors： Sicari R,Cortigiani L,Bigi R,Landi P,Raciti M,Picano E,Echo-Persantine International Cooperative (EPIC) Study Group.,Echo-Dobutamine International Cooperative (EDIC) Study Group.

更新日期：2004-05-25 00:00:00

abstract：:Normal right ventricular muscles and similar preparations obtained from cats with signs of subacute right ventricular failure (RVF) (3 to 14 days after pressure overload induced by pulmonary artery coarctation) were studied during stimulation (at 0.5 Hz) and exposure to high-K+ Tyrode's solution. Twitch force, rate of...

journal_title：Circulation

authors： Gaide MS,Kimura S,Lodge NJ,Cameron JS,Kozlovskis PL,Myerburg RJ,Bassett AL

更新日期：1986-03-01 00:00:00

abstract：BACKGROUND:Sympathetic activation and respiratory abnormalities may each be implicated in the pathophysiology of congestive heart failure (CHF). Chemoreflexes are an important mechanism regulating both sympathetic drive and breathing. We therefore tested the hypothesis that chemoreflex function is altered in CHF. METH...

journal_title：Circulation

authors： Narkiewicz K,Pesek CA,van de Borne PJ,Kato M,Somers VK

更新日期：1999-07-20 00:00:00

abstract：:Thirty patients with triple-vessel coronary artery disease proven by angiography, symptomatic angina and a positive ECG stress test were evaluated with thallium-201 (201TI) scintigraphy. Twenty patients also had aortocoronary saphenous vein bypass surgery; 15 of them had repeat noninvasive evaluation. Seventy percent ...

journal_title：Circulation

authors： Leppo J,Yipintsoi T,Blankstein R,Bontemps R,Freeman LM,Zohman L,Scheuer J

更新日期：1979-04-01 00:00:00

abstract：:Early afterdepolarizations (EADs) are depolarizing potentials that occur before complete repolarization. They may be important in the acquired and possibly the idiopathic long QT syndrome and associated ventricular tachycardia (VT). The purpose of these experiments was to study in 20 open-chest dogs the effects of sym...

journal_title：Circulation

authors： Ben-David J,Zipes DP

更新日期：1988-11-01 00:00:00

abstract：BACKGROUND:This study compared the efficacy of ischemic preconditioning (IPC) and sodium-hydrogen exchanger (NHE)-1 inhibition to reduce infarct size (IS) induced by a 90-minute ischemic insult and examined the interaction between NHE-1 inhibition and IPC. METHODS AND RESULTS:In a canine infarct model, either IPC, pro...

journal_title：Circulation

authors： Gumina RJ,Buerger E,Eickmeier C,Moore J,Daemmgen J,Gross GJ

更新日期：1999-12-21 00:00:00

abstract：BACKGROUND:Angiotensin II (Ang II) plays a critical role in the development of vascular lesions in hypertension, atherosclerosis, and several renal diseases. Because Ang II may contribute to the leukocyte recruitment associated with these pathological states, the aim of the present study was to assess the role of Ang I...

journal_title：Circulation

authors： Piqueras L,Kubes P,Alvarez A,O'Connor E,Issekutz AC,Esplugues JV,Sanz MJ

更新日期：2000-10-24 00:00:00

abstract：:This study was undertaken to determine if computerized tomography (CT scanning) with an EMI cranial scanner could detect edema associated with myocardial ischemia in canine hearts. A localized area of decreased density in the posterior papillary muscle and surrounding myocardium was detected on serial 8 mm CT scan sli...

journal_title：Circulation

authors： Powell WJ Jr,wittenberg J,Maturi RA,Dinsmore RE,Miller SW

更新日期：1977-01-01 00:00:00

abstract：:The first stage of a repair of pulmonary atresia with intact ventricular septum (type I) was attempted in a 2-day-old infant. At surgery, decompression of the hypertensive small right ventricle was followed by a sudden loss of myocardial contractility and death. Postmortem examination revealed a fistula with a large o...

journal_title：Circulation

authors： O'Connor WN,Cottrill CM,Johnson GL,Noonan JA,Todd EP

更新日期：1982-04-01 00:00:00

abstract：BACKGROUND:Arterial remodeling after balloon angioplasty has been recognized as a major determinant of restenosis. Perturbation of collagen metabolism might be important. After balloon injury, matrix metalloproteinase (MMP) expression is upregulated. We investigated the effect of Batimastat, a nonspecific MMP inhibitor...

journal_title：Circulation

authors： de Smet BJ,de Kleijn D,Hanemaaijer R,Verheijen JH,Robertus L,van Der Helm YJ,Borst C,Post MJ

更新日期：2000-06-27 00:00:00

abstract：BACKGROUND:The role of infections and inflammation in the pathophysiology of coronary heart disease is emerging. We studied the independent and joint effects of these 2 components on coronary risk. METHODS AND RESULTS:We measured baseline levels of C-reactive protein (CRP) and antibodies to adenovirus, enterovirus, cy...

journal_title：Circulation

authors： Roivainen M,Viik-Kajander M,Palosuo T,Toivanen P,Leinonen M,Saikku P,Tenkanen L,Manninen V,Hovi T,Mänttäri M

更新日期：2000-01-25 00:00:00

abstract：BACKGROUND:Whether the benefit in quality of life (QOL) after percutaneous coronary intervention depends on the severity of the stenosis as determined by fractional flow reserve (FFR) remains unknown. This study sought to investigate the relationship between FFR values and improvement in QOL. METHODS:From the FAME 1 a...

journal_title：Circulation

authors： Nishi T,Piroth Z,De Bruyne B,Jagic N,Möbius-Winkler S,Kobayashi Y,Derimay F,Fournier S,Barbato E,Tonino P,Jüni P,Pijls NHJ,Fearon WF

更新日期：2018-10-23 00:00:00

abstract：:To determine whether a ventricular (LV) end-systolic dimension (ESD) greater than or equal to 55 mm and LV left fractional shortening less than 25% are risk factors for aortic valve replacement (AVR) in patients with aortic insufficiency, we analyzed the clinical course and M-mode echocardiograms in 47 consecutive pat...

journal_title：Circulation

authors： Fioretti P,Roelandt J,Bos RJ,Meltzer RS,van Hoogenhuijze D,Serruys PW,Nauta J,Hugenholtz PG

更新日期：1983-01-01 00:00:00

abstract：BACKGROUND:Tumor necrosis factor alpha (TNF-alpha) increases in patients with severe congestive heart failure (CHF) and cachexia. Two naturally occurring modulators of TNF-alpha activity have been identified in human serum. These two soluble proteins are the extracellular domains of the TNF receptors (sTNF-RI and sTNF-...

journal_title：Circulation

authors： Ferrari R,Bachetti T,Confortini R,Opasich C,Febo O,Corti A,Cassani G,Visioli O

更新日期：1995-09-15 00:00:00

abstract：BACKGROUND:Functional mitral regurgitation (MR) is caused by systolic traction on the mitral leaflets related to ventricular distortion. Little is known about whether chronic tethering causes the mitral leaflet area to adapt to the geometric needs imposed by tethering, in part because of inability to reconstruct leafle...

journal_title：Circulation

authors： Chaput M,Handschumacher MD,Tournoux F,Hua L,Guerrero JL,Vlahakes GJ,Levine RA

更新日期：2008-08-19 00:00:00

abstract：BACKGROUND:Vascular endothelial growth factor (VEGF) is an important active protein for the induction of angiogenesis and improvement in cardiac function after myocardial ischemia; however, the lack of a delivery system targeted to the injured myocardium reduces the local therapeutic efficacy of VEGF and increases its ...

journal_title：Circulation

authors： Zhang J,Ding L,Zhao Y,Sun W,Chen B,Lin H,Wang X,Zhang L,Xu B,Dai J

更新日期：2009-04-07 00:00:00

abstract：BACKGROUND:Brain natriuretic peptide is a novel natriuretic peptide that is secreted predominantly from the ventricles, and its plasma levels have been shown to be markedly increased in patients with chronic congestive heart failure. This study was designed to examine the plasma levels of brain natriuretic peptide as w...

journal_title：Circulation

authors： Morita E,Yasue H,Yoshimura M,Ogawa H,Jougasaki M,Matsumura T,Mukoyama M,Nakao K

更新日期：1993-07-01 00:00:00

abstract：BACKGROUND:Atrial fibrillation (AF), the most common sustained arrhythmia in hypertrophic cardiomyopathy (HCM), is capable of producing symptoms that impact quality of life and is associated with risk for embolic stroke. However, the influence of AF on clinical course and outcome in HCM remains incompletely resolved. ...

journal_title：Circulation

authors： Rowin EJ,Hausvater A,Link MS,Abt P,Gionfriddo W,Wang W,Rastegar H,Estes NAM,Maron MS,Maron BJ

更新日期：2017-12-19 00:00:00