Eliminating bradyarrhythmias after orthotopic heart transplantation.

abstract：BACKGROUND:Advances in surgical technique and perioperative myocardial protection have reduced the risk of aortic and mitral valve surgery. Improved methods of valve repair have reduced the proportion of patients who require valve replacement. However, patients who require valve replacement often have advanced disease ...

journal_title：Circulation

authors： Rao V,Christakis GT,Weisel RD,Buth KJ,Ikonomidis JS,Shirai T,Cohen G,David TE

更新日期：1996-11-01 00:00:00

abstract：:Many basic concepts of cardiac output and arterial pressure control have changed considerably in the past few years. In general, each tissue controls its own local resistance and blood flow regardless of the level of arterial pressure; the sum of the local flows then determines the venous return and cardiac output. Ho...

journal_title：Circulation

authors： Guyton AC

更新日期：1981-12-01 00:00:00

abstract：:We have shown previously that the physical properties of myocardium in dogs can be characterized with quantitative ultrasonic integrated backscatter and that interrogation of the tissue with ultrasound can delineate cardiac cycle-dependent changes in ultrasonic backscatter in normal tissue that disappear with ischemia...

journal_title：Circulation

authors： Vered Z,Barzilai B,Mohr GA,Thomas LJ 3rd,Genton R,Sobel BE,Shoup TA,Melton HE,Miller JG,Pérez JE

更新日期：1987-11-01 00:00:00

abstract：BACKGROUND:We have demonstrated that myocardial acceleration during isovolumic contraction (IVA) is a sensitive index of right ventricular contractile function. In this study, we assessed the usefulness of IVA to measure left ventricular (LV) contractile function and force-frequency relationships in an experimental pre...

journal_title：Circulation

authors： Vogel M,Cheung MM,Li J,Kristiansen SB,Schmidt MR,White PA,Sorensen K,Redington AN

更新日期：2003-04-01 00:00:00

abstract：BACKGROUND:There is no consensus on how, when, or at what intensity exercise should be performed after heart transplantation (HTx). We have recently shown that high-intensity interval training (HIT) is safe, well tolerated, and efficacious in the maintenance state after HTx, but studies have not investigated HIT effect...

journal_title：Circulation

authors： Nytrøen K,Rolid K,Andreassen AK,Yardley M,Gude E,Dahle DO,Bjørkelund E,Relbo Authen A,Grov I,Philip Wigh J,Have Dall C,Gustafsson F,Karason K,Gullestad L

更新日期：2019-05-07 00:00:00

abstract：:Twenty-three children with valvar or discrete subvalvar aortic stenosis underwent a controlled, progressive bicycle exercise test within 6 months before and 3-30 months after surgery for left ventricular outflow tract obstruction. The patients were divided into three groups according to the preoperative resting gradie...

journal_title：Circulation

authors： Whitmer JT,James FW,Kaplan S,Schwartz DC,Knight MJ

更新日期：1981-02-01 00:00:00

abstract：BACKGROUND:Although previous studies have shown functional improvements in patients who undergo coronary artery bypass graft (CABG) surgery, data are conflicting on whether the gains achieved by women are similar to or less than those achieved by men. METHODS AND RESULTS:We compared physical and psychological function...

journal_title：Circulation

authors： Vaccarino V,Lin ZQ,Kasl SV,Mattera JA,Roumanis SA,Abramson JL,Krumholz HM

更新日期：2003-11-25 00:00:00

abstract：BACKGROUND:New methods of R-R interval variability based on fractal scaling and nonlinear dynamics ("chaos theory") may give new insights into heart rate dynamics. The aims of this study were to (1) systematically characterize and quantify the effects of aging from early childhood to advanced age on 24-hour heart rate ...

journal_title：Circulation

authors： Pikkujämsä SM,Mäkikallio TH,Sourander LB,Räihä IJ,Puukka P,Skyttä J,Peng CK,Goldberger AL,Huikuri HV

更新日期：1999-07-27 00:00:00

abstract：:Knowledge of the potential gradient field created by defibrillation electrodes is important for the understanding and improvement of defibrillation. To obtain this knowledge by direct measurements, potentials were recorded from 60 epicardial, eight septal, and 36 right ventricular transmural electrodes in six open-che...

journal_title：Circulation

authors： Chen PS,Wolf PD,Claydon FJ,Dixon EG,Vidaillet HJ Jr,Danieley ND,Pilkington TC,Ideker RE

更新日期：1986-09-01 00:00:00

abstract：BACKGROUND:An imbalance of sympathetic and parasympathetic drive to the heart is an important risk factor for cardiac death in patients with coronary heart disease, diabetes, and renal insufficiency. The amount of neurotransmitter released from peripheral autonomic nerves is modulated by presynaptic receptor systems. I...

journal_title：Circulation

authors： Oberhauser V,Schwertfeger E,Rutz T,Beyersdorf F,Rump LC

更新日期：2001-03-27 00:00:00

abstract：BACKGROUND:Myocardial perfusion reserve can be noninvasively assessed with cardiovascular MR. In this study, the diagnostic accuracy of this technique for the detection of significant coronary artery stenosis was evaluated. METHODS AND RESULTS:In 15 patients with single-vessel coronary artery disease and 5 patients wi...

journal_title：Circulation

authors： Al-Saadi N,Nagel E,Gross M,Bornstedt A,Schnackenburg B,Klein C,Klimek W,Oswald H,Fleck E

更新日期：2000-03-28 00:00:00

abstract：BACKGROUND:Multicomponent atrial electrograms and "slow pathway potentials" are helpful in identifying target sites for radiofrequency catheter ablation of the slow pathway in patients with atrioventricular (AV) nodal reentrant tachycardia. The purpose of this study was to compare the atrial electrograms recorded at va...

journal_title：Circulation

authors： Niebauer MJ,Daoud E,Williamson B,Man KC,Strickberger A,Hummel J,Morady F

更新日期：1995-07-01 00:00:00

abstract：:Minoxidil, a potent predominant arterial dilator, improves hemodynamics over the short term in patients with heart failure. In random double-blind fashion 17 patients with chronic left heart failure were given minoxidil (nine patients) or placebo (eight patients) in addition to digoxin and diuretics for 3 months. Card...

journal_title：Circulation

authors： Franciosa JA,Jordan RA,Wilen MM,Leddy CL

更新日期：1984-07-01 00:00:00

abstract：BACKGROUND:It is unclear whether increased left ventricular (LV) mass in overweight individuals is related to their adiposity or to greater fat-free mass (FFM). METHODS AND RESULTS:We compared echocardiographic LV mass to FFM and adipose body mass by bioelectric impedance and to anthropometric measurements in 3107 Ame...

journal_title：Circulation

authors： Bella JN,Devereux RB,Roman MJ,O'Grady MJ,Welty TK,Lee ET,Fabsitz RR,Howard BV

更新日期：1998-12-08 00:00:00

abstract：:Volume loading is used to treat hemodynamically compromised patients with acute pulmonary embolism despite data to suggest that volume loading after embolism might cause a leftward shift of the ventricular septum with a subsequent decrease in left ventricular (LV) end-diastolic volume and stroke work. We studied 10 cl...

journal_title：Circulation

authors： Belenkie I,Dani R,Smith ER,Tyberg JV

更新日期：1989-07-01 00:00:00

abstract：BACKGROUND:High-mobility group box-1 (HMGB1) is a nuclear factor released by necrotic cells and by activated immune cells. HMGB1 signals via members of the toll-like receptor family and the receptor for advanced glycation end products (RAGE). Although HMGB1 has been implicated in ischemia/reperfusion (I/R) injury of th...

journal_title：Circulation

authors： Andrassy M,Volz HC,Igwe JC,Funke B,Eichberger SN,Kaya Z,Buss S,Autschbach F,Pleger ST,Lukic IK,Bea F,Hardt SE,Humpert PM,Bianchi ME,Mairbäurl H,Nawroth PP,Remppis A,Katus HA,Bierhaus A

更新日期：2008-06-24 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：:To investigate whether iron is involved in the reperfusion syndrome by aggravating free radical injury, the hearts from iron-loaded and control rats were perfused under normoxic, anoxic, and reperfusion conditions. Normoxic perfusion revealed no change in coronary flow, contractility, or lactate dehydrogenase (LDH) re...

journal_title：Circulation

authors： van der Kraaij AM,Mostert LJ,van Eijk HG,Koster JF

更新日期：1988-08-01 00:00:00

abstract：BACKGROUND:Sudden Unexplained Death Syndrome (SUDS) is the leading cause of death in young, healthy, Southeast Asian men. The role of an implantable cardioverter defibrillator (ICD) for mortality reduction in these patients remains unclear. METHODS AND RESULTS:The Defibrillator Versus beta-Blockers for Unexplained Dea...

journal_title：Circulation

authors： Nademanee K,Veerakul G,Mower M,Likittanasombat K,Krittayapong R,Bhuripanyo K,Sitthisook S,Chaothawee L,Lai MY,Azen SP

更新日期：2003-05-06 00:00:00

abstract：BACKGROUND:Expansion of an acute myocardial infarction predicts progressive left ventricular (LV) dilatation, functional deterioration, and early death. This study tests the hypothesis that restraining expansion of an acute infarction preserves LV geometry and resting function. METHODS AND RESULTS:In 23 sheep, snares ...

journal_title：Circulation

authors： Kelley ST,Malekan R,Gorman JH 3rd,Jackson BM,Gorman RC,Suzuki Y,Plappert T,Bogen DK,Sutton MG,Edmunds LH Jr

更新日期：1999-01-05 00:00:00

abstract：:To determine the long-term efficacy of apical left ventricular to aortic conduits in palliating complex left ventricular outflow obstruction, we reviewed our entire experience of 20 pediatric patients who underwent placement of a composite porcine valve-bearing conduit from the left ventricular apex to the aorta from ...

journal_title：Circulation

authors： Frommelt PC,Rocchini AP,Bove EL

更新日期：1991-11-01 00:00:00

abstract：BACKGROUND:Convincing evidence suggests that atherosclerosis is an inflammatory disease. The inflammatory response is an important determinant of atherosclerotic plaque instability. Therefore, we investigated the prognostic impact of key inflammatory players, namely the inflammatory marker C-reactive protein (CRP) and ...

journal_title：Circulation

authors： Heeschen C,Dimmeler S,Hamm CW,Fichtlscherer S,Boersma E,Simoons ML,Zeiher AM,CAPTURE Study Investigators.

更新日期：2003-04-29 00:00:00

abstract：BACKGROUND:Heparin-induced thrombocytopenia (HIT) is an immune-mediated syndrome caused by heparin. Complications range from thrombocytopenia to thrombocytopenia with thrombosis. We report a prospective, historical- controlled study evaluating the efficacy and safety of argatroban, a direct thrombin inhibitor, as antic...

journal_title：Circulation

authors： Lewis BE,Wallis DE,Berkowitz SD,Matthai WH,Fareed J,Walenga JM,Bartholomew J,Sham R,Lerner RG,Zeigler ZR,Rustagi PK,Jang IK,Rifkin SD,Moran J,Hursting MJ,Kelton JG,ARG-911 Study Investigators.

更新日期：2001-04-10 00:00:00

abstract：BACKGROUND:Right ventricular (RV) dilatation that occurs as a consequence of RV infarction is thought to produce hemodynamic instability by reducing left ventricular (LV) preload and compliance. We hypothesized that these geometric changes may also adversely affect LV systolic performance. METHODS AND RESULTS:Twelve 4...

journal_title：Circulation

authors： Brookes C,Ravn H,White P,Moeldrup U,Oldershaw P,Redington A

更新日期：1999-08-17 00:00:00

abstract：BACKGROUND:The association of anticardiolipin (aCL) antibodies with coronary artery disease has been shown in several studies but remains controversial. We evaluated the association of aCL and anti-beta(2)-glycoprotein I (abeta(2)GPI) antibodies with the risk of recurrent cardiac events in postinfarction patients. MET...

journal_title：Circulation

authors： Bili A,Moss AJ,Francis CW,Zareba W,Watelet LF,Sanz I

更新日期：2000-09-12 00:00:00

abstract：BACKGROUND:Hypertrophic cardiomyopathy (HCM) is characterized by myocardial hypertrophy of unknown etiology. Missense mutations of the cardiac beta-myosin-heavy-chain (beta-MHC) gene that may be responsible for cardiac hypertrophy have been detected in patients with HCM. On the other hand, gross structural abnormalitie...

journal_title：Circulation

authors： Nishi H,Kimura A,Harada H,Koga Y,Adachi K,Matsuyama K,Koyanagi T,Yasunaga S,Imaizumi T,Toshima H

更新日期：1995-06-15 00:00:00

abstract：BACKGROUND:Patients with bicuspid aortic valve (AV) stenosis were excluded from the pivotal evaluations of transcatheter AV replacement (TAVR) devices. We sought to evaluate the outcomes of TAVR in patients with bicuspid AV stenosis in comparison with those with tricuspid AV stenosis. METHODS:We used data from the Soc...

journal_title：Circulation

authors： Halim SA,Edwards FH,Dai D,Li Z,Mack MJ,Holmes DR,Tuzcu EM,Thourani VH,Harrison JK,Brennan JM

更新日期：2020-03-31 00:00:00

abstract：BACKGROUND:Heterogeneous electrophysiological properties, which may be due in part to autonomic innervation, are important in the maintenance of atrial fibrillation (AF). We hypothesized that heterogeneous sympathetic denervation with phenol would create a milieu for sustained AF. METHODS AND RESULTS:After the determi...

journal_title：Circulation

authors： Olgin JE,Sih HJ,Hanish S,Jayachandran JV,Wu J,Zheng QH,Winkle W,Mulholland GK,Zipes DP,Hutchins G

更新日期：1998-12-08 00:00:00

abstract：:A patient is described in whom a large congenital aneurysm or diverticulum of the right atrium caused repeated attacks of supraventricular arrhythmia and a strikingly reduced cardiac output. The aneurysm, which contained a large thrombus, was demonstrated by preoperative angiographic examinations. At the time of opera...

journal_title：Circulation

authors： Morrow AG,Behrendt DM

更新日期：1968-07-01 00:00:00

abstract：BACKGROUND:Symptomatic prolonged sinus pauses on termination of atrial fibrillation (AF) are an indication for pacemaker implantation. We evaluated sinus node function and clinical outcome in patients with prolonged sinus pauses on termination of arrhythmia who underwent ablation of paroxysmal AF. METHODS AND RESULTS:...

journal_title：Circulation

authors： Hocini M,Sanders P,Deisenhofer I,Jaïs P,Hsu LF,Scavée C,Weerasoriya R,Raybaud F,Macle L,Shah DC,Garrigue S,Le Metayer P,Clémenty J,Haïssaguerre M

更新日期：2003-09-09 00:00:00