Mechanism of atrial sounds in atrial fibrillation. Phonoechocardiographic correlation. Report of a case.

abstract：BACKGROUND:Single-site ventricular pacing in patients with heart failure, atrial fibrillation, and severe atrioventricular (AV) nodal block risks the generation of discoordinate contraction. Whether altering the site of stimulation can offset this detrimental effect and what role sequential right ventricular-left ventr...

journal_title：Circulation

authors： Hay I,Melenovsky V,Fetics BJ,Judge DP,Kramer A,Spinelli J,Reister C,Kass DA,Berger RD

更新日期：2004-11-30 00:00:00

abstract：:One of the noninvasive methods of evaluating left ventricular performance is the measurement of left ventricular systolic time intervals (LVSTI). However, noninvasive measurement of right ventricular systole by this technique has been unreliable because of the inability to accurately time the onset of right ventricula...

journal_title：Circulation

authors： Hirschfeld S,Meyer R,Schwartz DC,Korfhagen J,Kaplan S

更新日期：1975-02-01 00:00:00

abstract：:Over an 8-year period, 20 patients underwent operative repair of ventricular aneurysms during the first 8 weeks after acute myocardial infarction. All patients with multivessel coronary occlusive disease underwent concomitant coronary artery bypass grafting. There was one hospital death, for an early mortality rate o...

journal_title：Circulation

authors： Walker WE,Stoney WS,Alford WC Jr,Burrus GR,Glassford DM,Thomas CS Jr

更新日期：1980-08-01 00:00:00

abstract：:All of the electrophysiological mechanisms of arrhythmias are sensitive to the influences of the autonomic nervous system, particularly to its adrenergic limb. Arrhythmogenic areas may also be dependent on the inhomogeneity of these influences because of their pathophysiological structure and/or the neurogenic or humo...

journal_title：Circulation

authors： Coumel P,Leenhardt A

更新日期：1991-04-01 00:00:00

abstract：BACKGROUND:Calcineurin is a calcium-regulated phosphatase that plays a major role in cardiac hypertrophy. We previously described that alternative splicing of the calcineurin Aβ (CnAβ) gene generates the CnAβ1 isoform, with a unique C-terminal region that is different from the autoinhibitory domain present in all other...

journal_title：Circulation

authors： Felkin LE,Narita T,Germack R,Shintani Y,Takahashi K,Sarathchandra P,López-Olañeta MM,Gómez-Salinero JM,Suzuki K,Barton PJ,Rosenthal N,Lara-Pezzi E

更新日期：2011-06-21 00:00:00

abstract：BACKGROUND:Chronic pulmonary regurgitation after repair of tetralogy of Fallot (TOF) may lead to right ventricular dilatation, which may be accompanied by ventricular tachycardia and sudden death. We aimed to examine the effects of pulmonary valve replacement (PVR) on (1) certain electrocardiographic markers predictive...

journal_title：Circulation

authors： Therrien J,Siu SC,Harris L,Dore A,Niwa K,Janousek J,Williams WG,Webb G,Gatzoulis MA

更新日期：2001-05-22 00:00:00

abstract：BACKGROUND:Arterial grafts for CABG have been used increasingly, and the radial artery (RA) has become a preferable graft, secondary to the internal mammary artery (IMA). In the present study, we investigated and compared NO release and endothelium-derived hyperpolarizing factor (EDHF)-mediated hyperpolarization for IM...

journal_title：Circulation

authors： He GW,Liu ZG

更新日期：2001-09-18 00:00:00

abstract：:The cause and associated pathophysiology of precordial ST-segment depression (ST decreases) during acute inferior myocardial infarction (IMI) are controversial. To investigate this problem, electrocardiographic findings in 48 consecutive patients with acute IMI were prospectively compared with results of coronary angi...

journal_title：Circulation

authors： Gibson RS,Crampton RS,Watson DD,Taylor GJ,Carabello BA,Holt ND,Beller GA

更新日期：1982-10-01 00:00:00

abstract：BACKGROUND:Altered composition of the gut microbiota is involved in both the onset and progression of obesity and diabetes mellitus. However, the link between gut microbiota and obesity-related cardiovascular complications has not been explored. The present study was designed to investigate the role of Akkermansia muci...

journal_title：Circulation

authors： Li J,Lin S,Vanhoutte PM,Woo CW,Xu A

更新日期：2016-06-14 00:00:00

abstract：BACKGROUND:Drug-coated balloons (DCBs) have shown promise in improving the outcomes for patients with peripheral artery disease. We compared a paclitaxel-coated balloon with percutaneous transluminal angioplasty (PTA) for the treatment of symptomatic superficial femoral and popliteal artery disease. METHODS AND RESULT...

journal_title：Circulation

authors： Tepe G,Laird J,Schneider P,Brodmann M,Krishnan P,Micari A,Metzger C,Scheinert D,Zeller T,Cohen DJ,Snead DB,Alexander B,Landini M,Jaff MR,IN.PACT SFA Trial Investigators.

更新日期：2015-02-03 00:00:00

abstract：BACKGROUND:The myocardial velocity gradient (MVG) is a recent index of regional myocardial function derived from endocardial and epicardial velocities obtained by tissue Doppler imaging (TDI). This index might be useful for discriminating between physiological and pathological left ventricular hypertrophy (LVH) and for...

journal_title：Circulation

authors： Derumeaux G,Mulder P,Richard V,Chagraoui A,Nafeh C,Bauer F,Henry JP,Thuillez C

更新日期：2002-04-02 00:00:00

abstract：BACKGROUND:Hemodynamic efficiency of Fontan circulation is believed to be a major determinant of outcome. Prior research on flow dynamics in different modifications of Fontan circulation used in vitro models and computer-based simulation. This study was designed to compare in vivo flow dynamics in the systemic venous p...

journal_title：Circulation

authors： Be'eri E,Maier SE,Landzberg MJ,Chung T,Geva T

更新日期：1998-12-22 00:00:00

abstract：BACKGROUND:Performance of coronary artery bypass graft (CABG) during an acute coronary syndrome (ACS) is mainly used in high-risk patients. Although potentially life-saving, patients undergoing early CABG are traditionally associated with a worse outcome than those not requiring CABG. Is this really true in an unselect...

journal_title：Circulation

authors： Monteiro P,Portuguese Registry on Acute Coronary Syndromes.

更新日期：2006-07-04 00:00:00

abstract：BACKGROUND:gp130, a signal transducer of the IL-6-related cytokines, is expressed ubiquitously, including in the heart. The activation of gp130 in cardiac myocytes was reported to induce myocardial hypertrophy. The downstream side of gp130 consists of two distinct pathways in cardiac myocytes, one a Janus kinase/signal...

journal_title：Circulation

authors： Kunisada K,Tone E,Fujio Y,Matsui H,Yamauchi-Takihara K,Kishimoto T

更新日期：1998-07-28 00:00:00

abstract：BACKGROUND:Inhomogeneity of dose distribution and anatomic aspects of the atherosclerotic plaque may influence the outcome of irradiated lesions after balloon angioplasty (BA). We evaluated the influence of delivered dose and morphological characteristics of coronary stenoses treated with beta-radiation after BA. METH...

journal_title：Circulation

authors： Sabaté M,Marijnissen JP,Carlier SG,Kay IP,van der Giessen WJ,Coen VL,Ligthart JM,Boersma E,Costa MA,Levendag PC,Serruys PW

更新日期：2000-05-30 00:00:00

abstract：:Serial electrophysiologic testing of multiple drugs was performed in 21 patients with recurrent atrioventricular (AV) nodal reentrant paroxysmal supraventricular tachycardia (PSVT). All patients had reproducible sustained PSVT induced before drug administration. Serial daily PSVT induction was attempted after administ...

journal_title：Circulation

authors： Bauernfeind RA,Wyndham CR,Dhingra RC,Swiryn SP,Palileo E,Strasberg B,Rosen KM

更新日期：1980-12-01 00:00:00

abstract：:To determine the effect of calcium-channel blockers on beta-adrenergic receptors, we studied the interactions of verapamil, diltiazem, and nifedipine with both human lymphocyte beta 2-adrenergic receptors and rat myocardial beta 1-adrenergic receptors by means of radioligand binding assays. We also determined the func...

journal_title：Circulation

authors： Feldman RD,Park GD,Lai CY

更新日期：1985-09-01 00:00:00

abstract：BACKGROUND:A family history of coronary heart disease (CHD) is an independent risk factor for cardiovascular events. However, the mechanisms underlying this susceptibility have not been fully elucidated. We hypothesized that an important mediator of the familial predisposition to CHD is subclinical atherosclerosis, whi...

journal_title：Circulation

authors： Wang TJ,Nam BH,D'Agostino RB,Wolf PA,Lloyd-Jones DM,MacRae CA,Wilson PW,Polak JF,O'Donnell CJ

更新日期：2003-08-05 00:00:00

abstract：:Predictability of prognosis was analyzed in 630 patients who were alive 30 days after valve replacement (1965-1986) for aortic stenosis. Follow-up totaled 4,072 patient-years. During the operative periods of 1965-1971 (n = 62), 1972-1976 (n = 164), 1977-1981 (n = 158), and 1982-1986 (n = 246), decreases in cardiothora...

journal_title：Circulation

authors： Lund O

更新日期：1990-07-01 00:00:00

abstract：BACKGROUND:In the twin-to-twin transfusion syndrome (TTTS), pressure rather than volume overload is increasingly considered as a key factor in the pathogenesis of the cardiomyopathy of the recipient twin. If this is the case, cardiac dysfunction should be among the first signs observed with TTTS. The objective of this ...

journal_title：Circulation

authors： Raboisson MJ,Fouron JC,Lamoureux J,Leduc L,Grignon A,Proulx F,Gamache S

更新日期：2004-11-09 00:00:00

abstract：BACKGROUND:Diabetes mellitus is a prevalent public health problem that affects about one-third of the US population and leads to serious vascular complications with increased risk for coronary artery disease. How bone marrow hematopoiesis contributes to diabetes mellitus complications is incompletely understood. We inv...

journal_title：Circulation

authors： Hoyer FF,Zhang X,Coppin E,Vasamsetti SB,Modugu G,Schloss MJ,Rohde D,McAlpine CS,Iwamoto Y,Libby P,Naxerova K,Swirski FK,Dutta P,Nahrendorf M

更新日期：2020-07-21 00:00:00

abstract：BACKGROUND:Several clinical studies have demonstrated a general superiority of biphasic waveform defibrillation compared with monophasic waveform defibrillation using epicardial lead systems. To test the breadth of utility of biphasic waveforms in humans, a prospective, randomized evaluation of defibrillation efficacy ...

journal_title：Circulation

authors： Bardy GH,Troutman C,Johnson G,Mehra R,Poole JE,Dolack GL,Kudenchuk PJ,Gartman DM

更新日期：1991-08-01 00:00:00

abstract：BACKGROUND:Albumin microbubbles that are used for contrast echocardiography persist within the myocardial microcirculation after ischemia/reperfusion (I-R). The mechanism responsible for this phenomenon is unknown. METHODS AND RESULTS:Intravital microscopy of the microcirculation of exteriorized cremaster muscle was p...

journal_title：Circulation

authors： Lindner JR,Coggins MP,Kaul S,Klibanov AL,Brandenburger GH,Ley K

更新日期：2000-02-15 00:00:00

abstract：BACKGROUND:Despite the fact that nonsteroidal anti-inflammatory drugs (NSAIDs) are contraindicated among patients with established cardiovascular disease, many receive NSAID treatment for a short period of time. However, little is known about the association between NSAID treatment duration and risk of cardiovascular d...

journal_title：Circulation

authors： Schjerning Olsen AM,Fosbøl EL,Lindhardsen J,Folke F,Charlot M,Selmer C,Lamberts M,Bjerring Olesen J,Køber L,Hansen PR,Torp-Pedersen C,Gislason GH

更新日期：2011-05-24 00:00:00

abstract：BACKGROUND:Eplerenone is known to reduce time to first hospitalization for heart failure or cardiovascular death in patients with heart failure and mild symptoms. In chronic diseases such as heart failure, characterized by repeat hospitalizations, analyzing all heart failure hospitalizations, not just the first, should...

journal_title：Circulation

authors： Rogers JK,McMurray JJ,Pocock SJ,Zannad F,Krum H,van Veldhuisen DJ,Swedberg K,Shi H,Vincent J,Pitt B

更新日期：2012-11-06 00:00:00

abstract：BACKGROUND:Whether passively collected data can substitute for adjudicated outcomes to reproduce the magnitude and direction of treatment effect observed in cardiovascular clinical trials is not well known. METHODS:We linked adults ≥65 years of age in the HiR (US CoreValve Pivotal High Risk) and SURTAVI trials (Surgic...

journal_title：Circulation

authors： Strom JB,Faridi KF,Butala NM,Zhao Y,Tamez H,Valsdottir LR,Brennan JM,Shen C,Popma JJ,Kazi DS,Yeh RW

更新日期：2020-07-21 00:00:00

abstract：BACKGROUND:Two sequential biphasic shocks delivered over separate lead configurations markedly improve defibrillation efficacy compared with a single shock alone. We investigated the effect of varying the intershock interval between sequential biphasic shocks on defibrillation. METHODS AND RESULTS:Defibrillation thres...

journal_title：Circulation

authors： Johnson EE,Alferness CA,Wolf PD,Smith WM,Ideker RE

更新日期：1992-06-01 00:00:00

abstract：BACKGROUND:Pulse pressure (PP) increases with age as a result of arterial stiffening and is a powerful predictor of cardiovascular disease. Type 1 diabetes is associated with excessive cardiovascular mortality and increased arterial stiffness. We examined whether the age-related blood pressure changes in type 1 diabeti...

journal_title：Circulation

authors： Rönnback M,Fagerudd J,Forsblom C,Pettersson-Fernholm K,Reunanen A,Groop PH,Finnish Diabetic Nephropathy (FinnDiane) Study Group.

更新日期：2004-08-31 00:00:00

abstract：:Two-dimensional echocardiography can provide serial cross-sectional images of the left ventricular cavity. We examined whether such serial images from steady-state ejecting hearts would allow three-dimensional reconstruction and accurate volume estimation without major geometric assumptions. Cross-circulated, paced do...

journal_title：Circulation

authors： Eaton LW,Maughan WL,Shoukas AA,Weiss JL

更新日期：1979-08-01 00:00:00

abstract：OBJECTIVE:Previous studies comparing off-pump coronary artery bypass surgery (OPCABG) to conventional techniques utilizing cardiopulmonary bypass (CABG-CPB) have failed to provide patient selection guidelines. We sought to determine guidelines, attempting to rectify the limitations of previous studies. METHODS AND RES...

journal_title：Circulation

authors： Magee MJ,Coombs LP,Peterson ED,Mack MJ

更新日期：2003-09-09 00:00:00