Noninvasive assessment of left ventricular force-frequency relationships using tissue Doppler-derived isovolumic acceleration: validation in an animal model.

abstract：BACKGROUND:To identify patients at risk for postoperative myocardial injury and death, measuring cardiac troponin routinely after noncardiac surgery has been suggested. Such monitoring was implemented in our hospital. The aim of this study was to determine the predictive value of postoperative myocardial injury, as mea...

journal_title：Circulation

authors： van Waes JA,Nathoe HM,de Graaff JC,Kemperman H,de Borst GJ,Peelen LM,van Klei WA,Cardiac Health After Surgery (CHASE) Investigators.

更新日期：2013-06-11 00:00:00

abstract：:Twenty-one reoperations for relief of angina have been performed at Stanford Medical Center in patients who had had previously unsuccessful direct coronary artery surgery. Complete releif of angina was obtained in seven (33%), improvement of angina in six (29%), and no change in angina in eight (38%) after these opera...

journal_title：Circulation

authors：

更新日期：1975-08-01 00:00:00

abstract：BACKGROUND:Endothelial nitric oxide (NO)-mediated responses are impaired in arterioles of male spontaneously hypertensive rats (SHR), but they are still present in female SHR. We hypothesized that in vitro incubation of arterioles of male SHR with estrogen will restore NO-mediated responses by upregulation of endotheli...

journal_title：Circulation

authors： Huang A,Sun D,Koller A,Kaley G

更新日期：2000-01-04 00:00:00

abstract：BACKGROUND:Bias in studies of preventive medications can occur when healthier patients are more likely to initiate and adhere to therapy than less healthy patients. We sought evidence of this bias by examining associations between statin exposure and various outcomes that should not be causally affected by statin expos...

journal_title：Circulation

authors： Dormuth CR,Patrick AR,Shrank WH,Wright JM,Glynn RJ,Sutherland J,Brookhart MA

更新日期：2009-04-21 00:00:00

abstract：BACKGROUND:This study evaluated the hypothesis that transendocardial injections of autologous mononuclear bone marrow cells in patients with end-stage ischemic heart disease could safely promote neovascularization and improve perfusion and myocardial contractility. METHODS AND RESULTS:Twenty-one patients were enrolled...

journal_title：Circulation

authors： Perin EC,Dohmann HF,Borojevic R,Silva SA,Sousa AL,Mesquita CT,Rossi MI,Carvalho AC,Dutra HS,Dohmann HJ,Silva GV,Belém L,Vivacqua R,Rangel FO,Esporcatte R,Geng YJ,Vaughn WK,Assad JA,Mesquita ET,Willerson JT

更新日期：2003-05-13 00:00:00

abstract：BACKGROUND:The extent and mechanism of the antithrombotic properties of fibrin-selective and non-fibrin-selective thrombolytic agents have not yet been established. METHODS AND RESULTS:The antithrombotic, thrombolytic, fibrinogenolytic, and pharmacokinetic properties of the following substances were determined in hams...

journal_title：Circulation

authors： Stassen JM,Nyström A,Hoylaerts M,Collen D

更新日期：1995-03-01 00:00:00

abstract：:Coronal, horizontal, and sagittal sections through the mid-line are excellent ways of depicting the anatomical position of the aortic root and for studying its topographical relationship to the surrounding vascular structures. Minimal radiographic abnormalities or no abnormalities at all may be present with an enlarge...

journal_title：Circulation

authors： Viamote M,Camacho M,Cahill DR,Viamonte M,Mori K

更新日期：1975-02-01 00:00:00

abstract：BACKGROUND:Although molecular biological studies suggest a pathogenic link between enterovirus infection and dilated cardiomyopathy (DCM), the frequency of detection of enteroviral RNA is not consistently high in myocardial tissue from patients with DCM. A recent study has suggested that hepatitis C virus (HCV) may als...

journal_title：Circulation

authors： Okabe M,Fukuda K,Arakawa K,Kikuchi M

更新日期：1997-07-01 00:00:00

abstract：:Using nondenaturing polyacrylamide gel electrophoresis, we have identified two distinct myosin isoenzymes in human atrial tissue that correspond to the V1 and V3 isomyosins found in rat ventricular tissue. Normal left and right atrial appendages have approximately 50% V3. When the left atrium was exposed to hemodynami...

journal_title：Circulation

authors： Buttrick PM,Malhotra A,Brodman R,McDermott L,Lam L

更新日期：1986-09-01 00:00:00

abstract：BACKGROUND:The uptake of oxidized low-density lipoprotein (OxLDL) by macrophage scavenger receptors is thought to be a key process in the formation of foam cells, the hallmark of early atherosclerotic lesions. CXCL16/scavenger receptor for phosphatidylserine and OxLDL is a multifunctional chemokine that exhibits scaven...

journal_title：Circulation

authors： Aslanian AM,Charo IF

更新日期：2006-08-08 00:00:00

abstract：:The clinical and pathologic features of 18 consecutive patients with peripartum cardiomyopathy at The Johns Hopkins Hospital were examined in an attempt to define the incidence of myocarditis and to determine its response to immunosuppressive agents. In addition to routine studies, patients were evaluated with echocar...

journal_title：Circulation

authors： Midei MG,DeMent SH,Feldman AM,Hutchins GM,Baughman KL

更新日期：1990-03-01 00:00:00

abstract：:We assessed the reversibility of functional and morphological changes of arterialized vein segments by returning them to the venous circulation. Thirteen dogs underwent right carotid and femoral veno-arterial grafting. After 12 weeks, veno-arterial grafts were removed for contractility (norepinephrine [NE] and 5-hydro...

journal_title：Circulation

authors： Fann JI,Sokoloff MH,Sarris GE,Yun KL,Kosek JC,Miller DC

更新日期：1990-11-01 00:00:00

abstract：:The influence of cold on the threshold for myocardial ischemia and the efficacy of antianginal drugs in a cold environment were assessed in 24 patients with stable angina and exercise-induced ST depression. Treadmill exercise tests were done according to a randomized double-blind protocol 90 minutes after administrati...

journal_title：Circulation

authors： Juneau M,Johnstone M,Dempsey E,Waters DD

更新日期：1989-05-01 00:00:00

abstract：BACKGROUND:Predictors of antiplatelet therapy discontinuation (ATD) during the first year after drug-eluting stent implantation are poorly known. METHODS AND RESULTS:This was a prospective study with 3-, 6-, 9-, and 12-month follow-up of patients receiving at least 1 drug-eluting stent between January and April 2008 i...

journal_title：Circulation

authors： Ferreira-González I,Marsal JR,Ribera A,Permanyer-Miralda G,García-Del Blanco B,Martí G,Cascant P,Martín-Yuste V,Brugaletta S,Sabaté M,Alfonso F,Capote ML,De La Torre JM,Ruíz-Lera M,Sanmiguel D,Cárdenas M,Pujol B,Baz JA

更新日期：2010-09-07 00:00:00

abstract：BACKGROUND:Beta-blockers improve clinical outcome when administered early after acute myocardial infarction. However, whether beta-blockers actually reduce the myocardial infarction size is still in dispute. Cardiac magnetic resonance imaging can accurately depict the left ventricular (LV) ischemic myocardium at risk (...

journal_title：Circulation

authors： Ibanez B,Prat-González S,Speidl WS,Vilahur G,Pinero A,Cimmino G,García MJ,Fuster V,Sanz J,Badimon JJ

更新日期：2007-06-12 00:00:00

abstract：:Despite a 2% to 3% prevalence of echocardiographically defined mitral valve prolapse (MVP) in the general population, the actual burden, risk stratification, and treatment of the so-called arrhythmic MVP are unknown. The clinical profile is characterized by a patient, usually female, with mostly bileaflet myxomatous d...

journal_title：Circulation

authors： Basso C,Iliceto S,Thiene G,Perazzolo Marra M

更新日期：2019-09-10 00:00:00

abstract：:The hypothesis tested in this study was that despite the presence of severe postischemic myocardial dysfunction ("stunning"), the extraction and subsequent intracellular washout of thallium 201 should be preserved as long as irreversible sarcolemmal membrane injury was avoided. To produce myocardial stunning, 19 open-...

journal_title：Circulation

authors： Moore CA,Cannon J,Watson DD,Kaul S,Beller GA

更新日期：1990-05-01 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：:To investigate whether a fixed external reference system should be used to most accurately describe regional left ventricular wall motion, we used vectors to analyze a simple model of ventricular contraction. If measured in a fixed external reference system, motion of implanted radiopaque midwall markers may contain t...

journal_title：Circulation

authors： Clayton PD,Jeppson GM,Klausner SC

更新日期：1982-06-01 00:00:00

abstract：BACKGROUND:We investigated whether L-arginine induces regression of preexisting atheromatous lesions and reversal of endothelial dysfunction in hypercholesterolemic rabbits, whether similar effects can be obtained by cholesterol-lowering therapy with lovastatin, and which mechanism leads to these effects. METHODS AND ...

journal_title：Circulation

authors： Böger RH,Bode-Böger SM,Brandes RP,Phivthong-ngam L,Böhme M,Nafe R,Mügge A,Frölich JC

更新日期：1997-08-19 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:Increased plasma levels of atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP) have been identified as predictors of cardiac dysfunction and prognosis in congestive heart failure and ischemic heart disease. In severe sepsis patients, however, no information is available yet about the prognos...

journal_title：Circulation

authors： Brueckmann M,Huhle G,Lang S,Haase KK,Bertsch T,Weiss C,Kaden JJ,Putensen C,Borggrefe M,Hoffmann U

更新日期：2005-07-26 00:00:00

abstract：BACKGROUND:Five years ago, we described a specific ECG pattern of right bundle-branch block and ST-segment elevation in leads V1 through V3 associated with sudden death in patients without demonstrable structural heart disease. Information on long-term outcome has become available due to pooled data on a large cohort o...

journal_title：Circulation

authors： Brugada J,Brugada R,Brugada P

更新日期：1998-02-10 00:00:00

abstract：BACKGROUND:Disease-associated electrophysiological alterations may contribute to the increased predisposition to arrhythmias of the hypertrophied or failing myocardium. An I(f)-like current is expressed in rat left ventricular myocytes (LVMs), its amplitude being linearly related to the severity of cardiac hypertrophy....

journal_title：Circulation

authors： Cerbai E,Pino R,Porciatti F,Sani G,Toscano M,Maccherini M,Giunti G,Mugelli A

更新日期：1997-02-04 00:00:00

abstract：BACKGROUND:Myocardial afterload depends on left ventricular (LV) cavity size, pressure, and wall thickness, all of which change markedly throughout ejection. We assessed the relationship between instantaneous ejection-phase pressure and myocardial stress and the effect of arterial wave reflections on myocardial stress ...

journal_title：Circulation

authors： Chirinos JA,Segers P,Gupta AK,Swillens A,Rietzschel ER,De Buyzere ML,Kirkpatrick JN,Gillebert TC,Wang Y,Keane MG,Townsend R,Ferrari VA,Wiegers SE,St John Sutton M

更新日期：2009-06-02 00:00:00

abstract：:Power outputs that are below the anaerobic threshold (theta an) may be sustained for prolonged durations, whereas power outputs that are greater than theta an result in a significant reduction in the tolerable duration to fatigue. The theta an may therefore be considered to demarcate exercise intensity into moderate (...

journal_title：Circulation

authors： Whipp BJ

更新日期：1987-12-01 00:00:00

abstract：BACKGROUND:Heart failure treatment depends partly on the underlying cause of the disease. We evaluated cardiovascular magnetic resonance (CMR) for the problem of differentiating dilated cardiomyopathy (DCM) from left ventricular (LV) dysfunction caused by coronary artery disease (CAD). METHODS AND RESULTS:Late gadolin...

journal_title：Circulation

authors： McCrohon JA,Moon JC,Prasad SK,McKenna WJ,Lorenz CH,Coats AJ,Pennell DJ

更新日期：2003-07-08 00:00:00

abstract：BACKGROUND:The coronary artery collateral circulation may be beneficial in protecting against myocardial ischemia and necrosis. However, there is a tremendous interindividual variability in the degree of new collateral formation in patients with coronary artery disease. The basis for this interindividual heterogeneity ...

journal_title：Circulation

authors： Schultz A,Lavie L,Hochberg I,Beyar R,Stone T,Skorecki K,Lavie P,Roguin A,Levy AP

更新日期：1999-08-03 00:00:00

abstract：BACKGROUND:Serum bilirubin is an endogenous antioxidant that is routinely measured before a statin is prescribed primarily to assess liver function, but the association with cardiovascular disease (CVD) in this population has not been explored. METHOD AND RESULTS:We identified patients from a United Kingdom primary ca...

journal_title：Circulation

authors： Horsfall LJ,Nazareth I,Petersen I

更新日期：2012-11-27 00:00:00

abstract：:In 18 patients with stable effort angina, verapamil, 80 mg four times daily, was compared with propranolol, 80 mg four times daily, in a double-blind, placebo-controlled trial to assess the effects on anginal threshold, exercise capacity and left ventricular function measured by gated equilibrium blood pool scanning. ...

journal_title：Circulation

authors： Sadick NN,Tan AT,Fletcher PJ,Morris J,Kelly DT

更新日期：1982-09-01 00:00:00