Congenital aneurysms of the left atrium: recognition by cross-sectional echocardiography.

abstract：:Acute intravenous administration of the new beta 1-adrenergic receptor partial agonist xamoterol lowers left ventricular end-diastolic pressure and improves the isovolumic indexes of inotropic state and relaxation. To determine if these hemodynamic changes were maintained after prolonged administration, the dose-respo...

journal_title：Circulation

authors： Pouleur H,Etienne J,Van Mechelen H,Gurné O,Rousseau MF

更新日期：1990-02-01 00:00:00

abstract：:The Persantine-Aspirin Reinfarction Study (PARIS) was a randomized, controlled, double-blind study of dipyridamole (Persantine) and aspirin in secondary prevention of coronary heart disease. Two thousand twenty-six men and women with myocardial infarction (MI) documented by electrocardiographic findings, clinical hist...

journal_title：Circulation

authors：

更新日期：1980-09-01 00:00:00

abstract：:It has been suggested that the beneficial effects of reperfusing ischemic myocardium might be in part reversed by the occurrence of "reperfusion injury." One possible mechanism could be the generation of oxygen free radicals. Superoxide dismutase enzymatically scavenges superoxide radicals by dismutation to hydrogen p...

journal_title：Circulation

authors： Ambrosio G,Weisfeldt ML,Jacobus WE,Flaherty JT

更新日期：1987-01-01 00:00:00

abstract：BACKGROUND:The detection and differentiation of intracardiac masses is still challenging and may include neoplasms and thrombi. The aim of this study was the investigation of a targeted, fibrin-specific contrast agent (EP-2104R) for molecular targeted magnetic resonance imaging (MRI) of left atrial clots. METHODS AND ...

journal_title：Circulation

authors： Spuentrup E,Fausten B,Kinzel S,Wiethoff AJ,Botnar RM,Graham PB,Haller S,Katoh M,Parsons EC Jr,Manning WJ,Busch T,Günther RW,Buecker A

更新日期：2005-07-19 00:00:00

abstract：BACKGROUND:Arterial hypertension is a prime cause of morbidity and mortality in the general population. Pharmacological treatment has limitations resulting from drug side effects, costs, and patient compliance. Thus, we investigated whether traditional Chinese medicine acupuncture is able to lower blood pressure. METH...

journal_title：Circulation

authors： Flachskampf FA,Gallasch J,Gefeller O,Gan J,Mao J,Pfahlberg AB,Wortmann A,Klinghammer L,Pflederer W,Daniel WG

更新日期：2007-06-19 00:00:00

abstract：BACKGROUND:Ambulatory outpatients (n = 150) with a history of paroxysmal supraventricular arrhythmia were studied to establish the characteristics of the first recurrence of symptomatic tachycardia (time to first recurrence, heart rate during tachycardia, and observed rhythm that was regular versus irregular) when no a...

journal_title：Circulation

authors： Clair WK,Wilkinson WE,McCarthy EA,Page RL,Pritchett EL

更新日期：1993-04-01 00:00:00

abstract：BACKGROUND:Pulmonary arterial hypertension (PAH) is a life-threatening disease, characterized by vascular smooth muscle cell hyperproliferation. The calcium/calmodulin-dependent phosphodiesterase 1 (PDE1) may play a major role in vascular smooth muscle cell proliferation. METHODS AND RESULTS:We investigated the expres...

journal_title：Circulation

authors： Schermuly RT,Pullamsetti SS,Kwapiszewska G,Dumitrascu R,Tian X,Weissmann N,Ghofrani HA,Kaulen C,Dunkern T,Schudt C,Voswinckel R,Zhou J,Samidurai A,Klepetko W,Paddenberg R,Kummer W,Seeger W,Grimminger F

更新日期：2007-05-01 00:00:00

abstract：:Mapping of blood velocities across the lumen of the ascending aorta was performed in eight patients during open-heart surgery. A Doppler ultrasound probe was constructed to measure velocities in 2 mm steps from the maximum convexity to the maximum concavity of aorta, 6 to 7 cm above the aortic valve. In five patients ...

journal_title：Circulation

authors： Segadal L,Matre K

更新日期：1987-07-01 00:00:00

abstract：BACKGROUND:Regional sympathetic denervation, such as that produced by a myocardial infarction, causes electrophysiological heterogeneity in the ventricles. The purpose of this study was to test the hypothesis that such denervation could cause drugs to exert heterogeneous myocardial effects. METHODS AND RESULTS:Sympath...

journal_title：Circulation

authors： Stanton MS,Zipes DP

更新日期：1991-10-01 00:00:00

abstract：:Recent molecular studies have suggested that viral myocarditis frequently underlies human congestive cardiomyopathy; however, only moderately sensitive and specific techniques were used. Polymerase chain reaction (PCR) gene amplification is a sensitive, specific technique ideally suited for the diagnosis of viral dise...

journal_title：Circulation

authors： Jin O,Sole MJ,Butany JW,Chia WK,McLaughlin PR,Liu P,Liew CC

更新日期：1990-07-01 00:00:00

abstract：:A series of 252 isolated aortic homograft valves in 248 patients have been followed for 9 to 16.5 years (mean 10.8). The valves were sterilized in antibiotic solution and stored in a nutrient medium at 4 degrees C and were nonvital. There were 15 in-hospital deaths (6%) and a mortality of 2.7% in patients undergoing a...

journal_title：Circulation

authors： Barratt-Boyes BG,Roche AH,Subramanyan R,Pemberton JR,Whitlock RM

更新日期：1987-04-01 00:00:00

abstract：BACKGROUND:Atrial fibrillation (AF) after cardiac surgery is associated with increased risk of complications, length of stay, and cost of care. Observational evidence suggests that patients who have undergone previous statin therapy have a lower incidence of postoperative AF. We tested this observation in a randomized,...

journal_title：Circulation

authors： Patti G,Chello M,Candura D,Pasceri V,D'Ambrosio A,Covino E,Di Sciascio G

更新日期：2006-10-03 00:00:00

abstract：BACKGROUND:Few data exist regarding the effects of angiotensin converting enzyme inhibitors in patients with regurgitant valvular lesions. We postulated an immediate improvement in cardiac performance with captopril in mitral regurgitation, which, in a hemodynamically compensated group of patients, might be mediated th...

journal_title：Circulation

authors： Wisenbaugh T,Essop R,Sareli P

更新日期：1991-11-01 00:00:00

abstract：BACKGROUND:A key component of reperfusion of myocardial infarction is an immediate inflammatory response, which enhances tissue repair. Matrix turnover is crucial to tissue repair, and matrix metalloproteinases (MMPs) are key enzymes involved in matrix degradation. The hypothesis tested is that one inflammation-based e...

journal_title：Circulation

authors： Lindsey M,Wedin K,Brown MD,Keller C,Evans AJ,Smolen J,Burns AR,Rossen RD,Michael L,Entman M

更新日期：2001-05-01 00:00:00

abstract：BACKGROUND:Left ventricular wall motion (WM) abnormalities have recognized prognostic significance in patients with coronary or other heart diseases; however, whether abnormal WM predicts adverse events in adults without overt cardiovascular disease has not been assessed. Our objective was to determine whether echocard...

journal_title：Circulation

authors： Cicala S,de Simone G,Roman MJ,Best LG,Lee ET,Wang W,Welty TK,Galloway JM,Howard BV,Devereux RB

更新日期：2007-07-10 00:00:00

abstract：:Background: In ISCHEMIA, an initial invasive strategy did not significantly reduce rates of cardiovascular events or all-cause mortality compared with a conservative strategy in patients with stable ischemic heart disease and moderate/severe myocardial ischemia. The most frequent component of composite cardiovascular ...

journal_title：Circulation

authors： Chaitman BR,Alexander KP,Cyr DD,Berger JS,Reynolds HR,Bangalore S,Boden WE,Lopes RD,Demkow M,Perna GP,Riezebos RK,McFalls EO,Banerjee S,Bagai A,Gosselin G,O'Brien SM,Rockhold FW,Waters DD,Thygesen KA,Stone GW,Whit

更新日期：2020-12-03 00:00:00

abstract：BACKGROUND:The differentiation of hypertrophic cardiomyopathy (HCM) from hypertensive left ventricular hypertrophy (H-LVH) on the basis of morphological information obtained by conventional echocardiography is occasionally problematic. We investigated whether strain rate (SR) imaging derived from tissue Doppler imaging...

journal_title：Circulation

authors： Kato TS,Noda A,Izawa H,Yamada A,Obata K,Nagata K,Iwase M,Murohara T,Yokota M

更新日期：2004-12-21 00:00:00

abstract：:In this double-blind randomized study, 19 patients with acute transmural myocardial infarction were treated with methylprednisolone administered 4.4 +/- 0.7 hours (+/- SEM) after the onset of chest pain, and were compared with 21 patients who received placebo 4.5 +/- 0.4 hours after the start of clinical symptoms. The...

journal_title：Circulation

authors： Madias JE,Hood WB Jr

更新日期：1982-06-01 00:00:00

abstract：:To determine the contribution of disopyramide's suggested opposing direct depressant and indirect acceleratory actions on sinus node function, we studied the effects of disopyramide, 1 x 10(-7) to 1 x 10(-4) M, on isolated rabbit sinus node preparations using standard microelectrode techniques. Transmembrane potential...

journal_title：Circulation

authors： Katoh T,Karagueuzian HS,Jordan J,Mandel WJ

更新日期：1982-12-01 00:00:00

abstract：:Although thrombolytic therapy has been a major advance in the treatment of acute myocardial infarction, in at least 25% of patients the artery remains occluded after administration. In these patients, the strategy of "rescue" or "salvage" angioplasty is frequently used although follow-up data are limited. Sixty-three ...

journal_title：Circulation

authors： Holmes DR Jr,Gersh BJ,Bailey KR,Reeder GS,Bresnahan JF,Bresnahan DR,Vlietstra RE

更新日期：1990-03-01 00:00:00

abstract：BACKGROUND:Propylthiouracil (PTU) is used to treat hyperthyroid patients by its hypothyroid effect. PTU also is found to have potent antioxidant and immunosuppressive effects. These findings suggest that PTU may play a role in the prevention of atherosclerosis. METHODS AND RESULTS:This study evaluates the effect of PT...

journal_title：Circulation

authors： Chen WJ,Lin KH,Lai YJ,Yang SH,Pang JH

更新日期：2004-09-07 00:00:00

abstract：:End-systolic pressure (PES), volume (VES), wall tension (TES) and circumference (CES) of the human left ventricle were studied at cardiac catheterization in 24 subjects with varying degrees of left ventricular dysfunction. Acute alterations in systolic load consistently resulted in changes in VES and CES, with a small...

journal_title：Circulation

authors： Grossman W,Braunwald E,Mann T,McLaurin LP,Green LH

更新日期：1977-11-01 00:00:00

abstract：BACKGROUND:This study examined revascularization rates after acute myocardial infarction (AMI) for Aboriginal and non-Aboriginal patients sequentially controlling for admitting hospital and risk factors. METHODS AND RESULTS:Hospital data from the state of New South Wales, Australia (July 2000 through December 2008) we...

journal_title：Circulation

authors： Randall DA,Jorm LR,Lujic S,O'Loughlin AJ,Eades SJ,Leyland AH

更新日期：2013-02-19 00:00:00

abstract：:Current imaging modalities can provide only a qualitative or semiquantitative measure of the severity of aortic regurgitation. Ultrafast computed tomography (CT) has the capability of rapid imaging (17 frames/sec) coupled with high spatial resolution (1.5 mm2). Eight millimeter thick images can be acquired to interrog...

journal_title：Circulation

authors： Reiter SJ,Rumberger JA,Stanford W,Marcus ML

更新日期：1987-09-01 00:00:00

abstract：BACKGROUND:Long-term implantable left ventricular assist devices (LVADs) are increasingly used as a bridge to cardiac transplantation and may be used as long-term therapy for end-stage heart failure. After insertion of an LVAD, patients frequently become ambulatory. Sensors contained within these devices can measure th...

journal_title：Circulation

authors： Foray A,Williams D,Reemtsma K,Oz M,Mancini D

更新日期：1996-11-01 00:00:00

abstract：:Prenalterol, a beta-adrenergic agonist, was given to nine patients with angiographically proved coronary artery disease. Subjects were studied during chronic beta-adrenergic blockade. The adequacy of blockade was assessed by the exercise heart rate response and by plasma concentrations of blocking agents. After increm...

journal_title：Circulation

authors： Shiu MF,Ireland MA,Littler WA

更新日期：1981-12-01 00:00:00

abstract：BACKGROUND:Two different techniques have been developed for radiofrequency catheter ablation of typical atrioventricular nodal reentry (AVNRT). Lesions made anteriorly near the apex of the triangle of Koch usually eliminate fast pathway function, whereas lesions made posteriorly near the ostium of the coronary sinus se...

journal_title：Circulation

authors： Langberg JJ,Leon A,Borganelli M,Kalbfleisch SJ,el-Atassi R,Calkins H,Morady F

更新日期：1993-05-01 00:00:00

abstract：:The indication for prophylactic temporary and permanent pacing during acute myocardial infarction (MI) complicated by bundle branch block is high risk of progression via a Type II pattern to second or third degree (high degree) AV block during hospitalization or follow-up. In this study, determinants of high degree AV...

journal_title：Circulation

authors： Hindman MC,Wagner GS,JaRo M,Atkins JM,Scheinman MM,DeSanctis RW,Hutter AH Jr,Yeatman L,Rubenfire M,Pujura C,Rubin M,Morris JJ

更新日期：1978-10-01 00:00:00

abstract：BACKGROUND:Chronic thromboembolic pulmonary hypertension (CTEPH) is a disorder characterized by pulmonary arterial hypertension as a consequence of organized thrombotic material in the central pulmonary arteries. Incomplete resolution of acute pulmonary emboli is believed to be pathogenically important; however, the me...

journal_title：Circulation

authors： Olman MA,Marsh JJ,Lang IM,Moser KM,Binder BR,Schleef RR

更新日期：1992-10-01 00:00:00

abstract：BACKGROUND:The management of asymptomatic severe mitral regurgitation remains controversial. The aim of this study was to evaluate the outcome of a watchful waiting strategy in which patients are referred to surgery when symptoms occur or when asymptomatic patients develop left ventricular (LV) enlargement, LV dysfunct...

journal_title：Circulation

authors： Rosenhek R,Rader F,Klaar U,Gabriel H,Krejc M,Kalbeck D,Schemper M,Maurer G,Baumgartner H

更新日期：2006-05-09 00:00:00