Surgery for Aortic Dilatation in Patients With Bicuspid Aortic Valves: A Statement of Clarification From the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines.

abstract：BACKGROUND:Depression is an independent risk factor for myocardial infarction (MI). Selective serotonin reuptake inhibitors (SSRIs) may reduce this risk through attenuation of serotonin-mediated platelet activation in addition to treatment of depression itself. METHODS AND RESULTS:case-control study of first MI in smo...

journal_title：Circulation

authors： Sauer WH,Berlin JA,Kimmel SE

更新日期：2001-10-16 00:00:00

abstract：BACKGROUND:Lifetime risk for atherosclerotic cardiovascular disease (CVD) has not previously been estimated, and the effect of risk factor burden on lifetime risk is unknown. METHODS AND RESULTS:We included all Framingham Heart Study participants who were free of CVD (myocardial infarction, coronary insufficiency, ang...

journal_title：Circulation

authors： Lloyd-Jones DM,Leip EP,Larson MG,D'Agostino RB,Beiser A,Wilson PW,Wolf PA,Levy D

更新日期：2006-02-14 00:00:00

abstract：BACKGROUND:Patients with heart failure and systolic dysfunction may develop disordered breathing during sleep. Repeated episodes of apnea and hypopnea may result in desaturation and arousals, which could adversely affect left ventricular function. The purpose of this study was to determine the short-term effects of con...

journal_title：Circulation

authors： Javaheri S

更新日期：2000-02-01 00:00:00

abstract：BACKGROUND:To examine the effect of plasminogen activator therapy on vascular permeability, we used a modified rabbit mesenteric model of extravascular tissue accumulation of radiolabeled albumin. METHODS AND RESULTS:Albumin deposition was measured after saline, tissue-type plasminogen activator (t-PA; 0.86 mg/kg for ...

journal_title：Circulation

authors： Rudd MA,Johnstone MT,Rabbani LE,George D,Ware JA,Loscalzo J

更新日期：1991-12-01 00:00:00

abstract：BACKGROUND:The mechanisms of thrombosis on plaque erosion are poorly understood. We examined the potential role of endothelial apoptosis in endothelial erosion and vessel thrombosis. METHODS AND RESULTS:Segments of New Zealand White rabbit femoral arteries were temporarily isolated in vivo. One artery was incubated wi...

journal_title：Circulation

authors： Durand E,Scoazec A,Lafont A,Boddaert J,Al Hajzen A,Addad F,Mirshahi M,Desnos M,Tedgui A,Mallat Z

更新日期：2004-06-01 00:00:00

abstract：BACKGROUND:Smoking is a major risk factor for cardiovascular events. One of the potential mechanisms may be related to both coronary endothelial dysfunction and increased inflammatory response. The present study was designed to test the hypothesis that smoking is associated with epicardial coronary endothelial dysfunct...

journal_title：Circulation

authors： Lavi S,Prasad A,Yang EH,Mathew V,Simari RD,Rihal CS,Lerman LO,Lerman A

更新日期：2007-05-22 00:00:00

abstract：:Analysis of the Framingham Heart Study experience between 1958 and 1970 showed a progressive increase in the rate of treatment and control of hypertension. With cross-sectional criteria to define diastolic hypertension, the treatment rate rose from 35% in 1958 through 1960 to 69% in 1968 through 1970 (p less than .001...

journal_title：Circulation

authors： Shea S,Cook EF,Kannel WB,Goldman L

更新日期：1985-01-01 00:00:00

abstract：BACKGROUND:Denervation supersensitivity has been proposed as a mechanism for the relation between ventricular arrhythmias and the sympathetic nervous system. Evaluation of this phenomenon in humans has become feasible only recently with the development of noninvasive scintigraphic methods for evaluating the pattern of ...

journal_title：Circulation

authors： Calkins H,Allman K,Bolling S,Kirsch M,Wieland D,Morady F,Schwaiger M

更新日期：1993-07-01 00:00:00

abstract：BACKGROUND:The purpose of this study was to determine the influence of clinical characteristics on shock occurrence and survival in 241 patients with implantable cardioverter-defibrillator (ICD) therapy. METHODS AND RESULTS:Two hundred forty-one consecutive patients underwent ICD implantation between November 1982 and...

journal_title：Circulation

authors： Grimm W,Flores BT,Marchlinski FE

更新日期：1993-06-01 00:00:00

abstract：BACKGROUND:Several nonpharmacological interventions, including exercise, are recommended in primary prevention of hypertension and other cardiovascular diseases in which the pathogenetic role of endothelial dysfunction has been suggested. We studied the effects of long-term aerobic exercise on endothelial function in p...

journal_title：Circulation

authors： Higashi Y,Sasaki S,Kurisu S,Yoshimizu A,Sasaki N,Matsuura H,Kajiyama G,Oshima T

更新日期：1999-09-14 00:00:00

abstract：:Disorders associated with the overproduction or delayed clearance of beta-very low density lipoprotein and low density lipoprotein (LDL) are strikingly related to premature coronary artery disease. There are five recognized classes of LDL-lowering drugs, each acting through different basic mechanisms. The increased pr...

journal_title：Circulation

authors： Levy RI,Troendle AJ,Fattu JM

更新日期：1993-04-01 00:00:00

abstract：:The initial myocardial uptake of thallium-201 depends on myocardial blood flow distribution. The phenomenon of delayed thallium redistribution after transiently or chronically altered myocardial perfusion has been described. The net myocardial accumulation of thallium-201 after injection depends upon the net balance b...

journal_title：Circulation

authors： Grunwald AM,Watson DD,Holzgrefe HH Jr,Irving JF,Beller GA

更新日期：1981-09-01 00:00:00

abstract：:The significance of the direction of the ST-segment shifts on the 12-lead electrocardiogram was evaluated in 82 consecutive patients with unstable angina. Eighteen patients with ST-segment elevation (group I) were compared with 64 patients with ST-segment depression (group II). There was no difference between group I ...

journal_title：Circulation

authors： Plotnick GD,Conti CR

更新日期：1975-06-01 00:00:00

abstract：BACKGROUND:Drugs with negative inotropic effect are widely used to decrease obstruction in hypertrophic cardiomyopathy (HCM). However, the mechanism of therapeutic benefit has not been studied. METHODS AND RESULTS:We used M-mode, two-dimensional, and pulsed Doppler echocardiography to study 11 patients with obstructiv...

journal_title：Circulation

authors： Sherrid MV,Pearle G,Gunsburg DZ

更新日期：1998-01-06 00:00:00

abstract：BACKGROUND:Vascular smooth muscle cell (VMSC) proliferation is an essential component of myointimal hyperplasia, which is implicated in the failure of 30% to 50% of vascular interventions, such as coronary angioplasty and peripheral vein grafting. We have shown that cells derived from stenotic lesions in infrainguinal ...

journal_title：Circulation

authors： Refson JS,Schachter M,Patel MK,Hughes AD,Munro E,Chan P,Wolfe JH,Sever PS

更新日期：1998-06-30 00:00:00

abstract：BACKGROUND:Oxidative stress has been implicated in vascular injury and atherogenesis, and antioxidant treatment has shown favorable results in preclinical studies. Despite this, antioxidant therapy has failed to show benefit in clinical trials. Failure of antioxidants in clinical trials may be partly because such thera...

journal_title：Circulation

authors： Chyu KY,Babbidge SM,Zhao X,Dandillaya R,Rietveld AG,Yano J,Dimayuga P,Cercek B,Shah PK

更新日期：2004-05-25 00:00:00

abstract：BACKGROUND:The pathophysiological mechanisms leading to acceleration of ventricular tachycardia (VT) are still unclear. METHODS AND RESULTS:High-resolution epicardial mapping was used to study the mechanisms of VT acceleration by programmed electrical stimulation (PES) in a model of sustained reentrant VT in Langendor...

journal_title：Circulation

authors： Brugada J,Brugada P,Boersma L,Mont L,Kirchhof C,Wellens HJ,Allessie MA

更新日期：1991-05-01 00:00:00

abstract：BACKGROUND:The outcome of aortic valve replacement in patients with severe aortic stenosis, low transvalvular gradient, and severe left ventricular dysfunction is not well known. METHODS AND RESULTS:Between 1985 and 1995, 52 patients with left ventricular ejection fraction (EF) < or =35% and aortic stenosis with trans...

journal_title：Circulation

authors： Connolly HM,Oh JK,Schaff HV,Roger VL,Osborn SL,Hodge DO,Tajik AJ

更新日期：2000-04-25 00:00:00

abstract：BACKGROUND:It was the aim of this study to assess the long-term effects of physical exercise and low-fat diet on the progression of coronary artery disease. At the beginning of the study, 113 male patients with coronary artery disease were randomized to an intervention group (n=56) or a control group (n=57); 90 patient...

journal_title：Circulation

authors： Niebauer J,Hambrecht R,Velich T,Hauer K,Marburger C,Kälberer B,Weiss C,von Hodenberg E,Schlierf G,Schuler G,Zimmermann R,Kübler W

更新日期：1997-10-21 00:00:00

abstract：BACKGROUND:Coronary perfusion pressure has been shown to be a significant determinant of return of spontaneous circulation from cardiac arrest during asystole and electromechanical dissociation. The addition of interposed abdominal compression to otherwise standard cardiopulmonary resuscitation (CPR) increases coronary...

journal_title：Circulation

authors： Sack JB,Kesselbrenner MB,Jarrad A

更新日期：1992-12-01 00:00:00

abstract：BACKGROUND:The characteristics of transmembrane potential (TMP) at the core of functional reentry in the atrium are not well understood. METHODS AND RESULTS:In protocol 1 (11 dogs), isolated perfused canine right atria were mapped from the endocardial surface while simultaneous TMPs were recorded from the epicardial s...

journal_title：Circulation

authors： Athill CA,Ikeda T,Kim YH,Wu TJ,Fishbein MC,Karagueuzian HS,Chen PS

更新日期：1998-10-13 00:00:00

abstract：BACKGROUND:It is not known whether subspecialty care by cardiologists improves outcomes in heart failure patients from the community over care by other physicians. METHODS AND RESULTS:Using administrative data, we monitored 38 702 consecutive patients with first-time hospitalization for heart failure in Ontario, Canad...

journal_title：Circulation

authors： Jong P,Gong Y,Liu PP,Austin PC,Lee DS,Tu JV

更新日期：2003-07-15 00:00:00

abstract：BACKGROUND:The aim of this prospective, randomized study was to examine whether additional school exercise lessons would result in improved peak oxygen uptake (primary end point) and body mass index-standard deviation score, motor and coordinative abilities, circulating progenitor cells, and high-density lipoprotein ch...

journal_title：Circulation

authors： Walther C,Gaede L,Adams V,Gelbrich G,Leichtle A,Erbs S,Sonnabend M,Fikenzer K,Körner A,Kiess W,Bruegel M,Thiery J,Schuler G

更新日期：2009-12-01 00:00:00

abstract：BACKGROUND:Anisotropic conduction properties may provide a substrate for reentrant arrhythmias. We investigated the age-dependent changes of structural and functional anisotropy in isolated right atria from infant (1 to 2 months), young (6 to 12 months), and old (6 to 10 years) dogs. METHODS AND RESULTS:The histology ...

journal_title：Circulation

authors： Koura T,Hara M,Takeuchi S,Ota K,Okada Y,Miyoshi S,Watanabe A,Shiraiwa K,Mitamura H,Kodama I,Ogawa S

更新日期：2002-04-30 00:00:00

abstract：BACKGROUND:beta-Adrenergic receptor kinase 1 (beta ARK1) mediates beta-adrenergic receptor signaling via receptor phosphorylation, which results in functional uncoupling. The physiological importance of beta ARK1 on cardiac performance in the setting of ischemia and reperfusion injury, however, has not been clearly est...

journal_title：Circulation

authors： Chen EP,Bittner HB,Akhter SA,Koch WJ,Davis RD

更新日期：1998-11-10 00:00:00

abstract：BACKGROUND:Previous experimental studies have shown that the effect of serotonin on a coronary stenosis depends on whether that stenosis is compliant or fixed. However, the relation between coronary stenosis morphology and the response to serotonin in patients with angina is not known. METHODS AND RESULTS:Using comput...

journal_title：Circulation

authors： Tousoulis D,Davies G,McFadden E,Clarke J,Kaski JC,Maseri A

更新日期：1993-10-01 00:00:00

abstract：BACKGROUND:Obesity is a risk factor for impaired cardiac performance, particularly in women. Animal studies suggest that alterations in myocardial fatty acid metabolism and efficiency in obesity can cause decreased cardiac performance. In the present study, we tested the hypothesis that myocardial fatty acid metabolism...

journal_title：Circulation

authors： Peterson LR,Herrero P,Schechtman KB,Racette SB,Waggoner AD,Kisrieva-Ware Z,Dence C,Klein S,Marsala J,Meyer T,Gropler RJ

更新日期：2004-05-11 00:00:00

abstract：BACKGROUND:Experimental models suggest that brain natriuretic peptide (BNP) can modify left ventricular diastolic performance. The aim of this study was to evaluate the effects of BNP on resting and exercise hemodynamics and neurohormones in patients with isolated diastolic heart failure. METHODS AND RESULTS:Six patie...

journal_title：Circulation

authors： Clarkson PB,Wheeldon NM,MacFadyen RJ,Pringle SD,MacDonald TM

更新日期：1996-06-01 00:00:00

abstract：BACKGROUND:Low endothelial shear stress (ESS) promotes the development of atherosclerosis; however, its role in the progression of atherosclerotic plaques and evolution to inflamed high-risk plaques has not been studied. Our hypothesis was that the lowest values of ESS are responsible for the development of high-risk c...

journal_title：Circulation

authors： Chatzizisis YS,Jonas M,Coskun AU,Beigel R,Stone BV,Maynard C,Gerrity RG,Daley W,Rogers C,Edelman ER,Feldman CL,Stone PH

更新日期：2008-02-26 00:00:00

abstract：:Cerebral and retinal ischemic events have been described in mitral valve prolapse. To determine whether platelets play a part in the pathogenesis of thromboembolism we studied 29 patients with mitral valve prolapse, including nine (group I) with thromboembolism (cerebral, retinal and deep venous), eight (group II) wit...

journal_title：Circulation

authors： Walsh PN,Kansu TA,Corbett JJ,Savion PJ,Goldburgh WP,Schatz NJ

更新日期：1981-03-01 00:00:00