Immediate effect of expiratory loading on left ventricular stroke volume.

abstract：BACKGROUND:One or more brief episodes of coronary artery occlusion protect or "precondition" the myocardium perfused by that artery from a subsequent episode of sustained ischemia. We sought to determine whether ischemic preconditioning protects only those myocytes subjected to brief coronary occlusion or whether brief...

journal_title：Circulation

authors： Przyklenk K,Bauer B,Ovize M,Kloner RA,Whittaker P

更新日期：1993-03-01 00:00:00

abstract：BACKGROUND:We compared ischemic preconditioning (IP) induced with a single cycle of transient ischemia and reperfusion with that induced by multiple cycles in terms of (1) efficacy of protection against myocardial necrosis and (2) susceptibility to pharmacological blockade by inhibition of protein kinase C (PKC) or ele...

journal_title：Circulation

authors： Sandhu R,Diaz RJ,Mao GD,Wilson GJ

更新日期：1997-08-05 00:00:00

abstract：BACKGROUND:Sympathetic activation and respiratory abnormalities may each be implicated in the pathophysiology of congestive heart failure (CHF). Chemoreflexes are an important mechanism regulating both sympathetic drive and breathing. We therefore tested the hypothesis that chemoreflex function is altered in CHF. METH...

journal_title：Circulation

authors： Narkiewicz K,Pesek CA,van de Borne PJ,Kato M,Somers VK

更新日期：1999-07-20 00:00:00

abstract：BACKGROUND:Previous studies suggest that rigid fixation of the mitral annulus with an annuloplasty ring may impair left ventricular (LV) systolic performance. We used load-insensitive indexes of global and regional LV contractile mechanics to test the hypothesis that rigid fixation of the mitral annulus alters LV systo...

journal_title：Circulation

authors： Rayhill SC,Castro LJ,Nizyporuk MA,Ingels NB Jr,Daughters GT,Derby GC,Tye TL,Bolger AF,Miller DC

更新日期：1992-11-01 00:00:00

abstract：BACKGROUND:Differences in vascular reactivity to phenylephrine (PE) responsiveness have been largely evidenced in patients undergoing cardiac surgery with cardiopulmonary bypass (CPB). Because nitric oxide (NO) strongly affects modulation of the vascular tone in response to vasopressor agents, we hypothesized that the ...

journal_title：Circulation

authors： Philip I,Plantefeve G,Vuillaumier-Barrot S,Vicaut E,LeMarie C,Henrion D,Poirier O,Levy BI,Desmonts JM,Durand G,Benessiano J

更新日期：1999-06-22 00:00:00

abstract：:A case history of a 46-year-old Negro male was presented with rheumatic aortic insufficiency, angina pectoris, and possible subacute bacterial endocarditis. While hospitalized, the patient developed angina pectoris associated with micturition. This was not accompanied by a change in blood pressure, pulse, or increase ...

journal_title：Circulation

authors： Morris JJ,McIntosh HD

更新日期：1963-01-01 00:00:00

abstract：BACKGROUND:Although black cardiac patients receive fewer revascularization procedures than whites, it is unclear whether this has a detrimental impact on outcomes. The objective of our study was to compare 6-month functional status and angina outcomes among blacks and whites with documented coronary disease and to asse...

journal_title：Circulation

authors： Kaul P,Lytle BL,Spertus JA,DeLong ER,Peterson ED

更新日期：2005-03-15 00:00:00

abstract：:Hypertrophic cardiomyopathy (HCM) or idiopathic hypertrophic subaortic stenosis (IHSS) has been defined as an autosomal dominant myocardial disease characterized by specific physical findings, echocardiographic features, asymmetric septal hypertrophy and disordered myocardial architecture. Echocardiographic and scinti...

journal_title：Circulation

authors： Come PC,Bulkley BH,Goodman ZD,Hutchins GM,Pitt B,Fortuin NJ

更新日期：1977-06-01 00:00:00

abstract：BACKGROUND:ST-segment depression during exercise testing is frequently observed in the absence of restenosis after coronary angioplasty. METHODS AND RESULTS:We studied the determinants of this phenomenon in 70 consecutive patients with unstable angina related to a single left anterior descending coronary artery lesion...

journal_title：Circulation

authors： Beregi JP,Bauters C,McFadden EP,Quandalle P,Bertrand ME,Lablanche JM

更新日期：1994-07-01 00:00:00

abstract：BACKGROUND:Platelet aggregation plays a critical role in myocardial infarction and stroke; however, the role of platelet secretion in atherosclerotic vascular disease is poorly understood. Therefore, we examined the hypothesis that platelet dense-granule secretion modulates thrombosis, inflammation, and atherosclerotic...

journal_title：Circulation

authors： King SM,McNamee RA,Houng AK,Patel R,Brands M,Reed GL

更新日期：2009-09-01 00:00:00

abstract：:One hundred eighteen consecutive patients undergoing valve replacement for aortic stenosis were analyzed to determine the incidence of and predisposing factors to postoperative atrial tachyarrhythmias. Univariate and multivariate analyses were performed on 70 clinical, hemodynamic, radiographic, electrocardiographic, ...

journal_title：Circulation

authors： Douglas PS,Hirshfeld JW Jr,Edmunds LH Jr

更新日期：1985-09-01 00:00:00

abstract：BACKGROUND:Fortilin, a recently characterized nuclear antiapoptotic factor structurally distinct from inhibitor of apoptosis proteins (IAPs) and Bcl-2 family member proteins, has been suggested to be involved in cell survival and regulation of apoptosis within the cardiovascular system. In this continued investigation,...

journal_title：Circulation

authors： Tulis DA,Mnjoyan ZH,Schiesser RL,Shelat HS,Evans AJ,Zoldhelyi P,Fujise K

更新日期：2003-01-07 00:00:00

abstract：BACKGROUND:Pharmacological evidence has implicated ATP-sensitive K(+) (K(ATP)) channels as the effectors of cardioprotection, but the relative roles of mitochondrial (mitoK(ATP)) and sarcolemmal (surfaceK(ATP)) channels remain controversial. METHODS AND RESULTS:We examined the effects of the K(ATP) channel blocker HMR...

journal_title：Circulation

authors： Sato T,Sasaki N,Seharaseyon J,O'Rourke B,Marbán E

更新日期：2000-05-23 00:00:00

abstract：BACKGROUND:Peripheral arterial disease (PAD) is associated with an impairment in exercise performance and muscle function that is not fully explained by the reduced leg blood flow during exercise. This study characterized the effects of PAD on muscle function, histology, and metabolism. METHODS AND RESULTS:Twenty-six ...

journal_title：Circulation

authors： Regensteiner JG,Wolfel EE,Brass EP,Carry MR,Ringel SP,Hargarten ME,Stamm ER,Hiatt WR

更新日期：1993-02-01 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:We previously found in a pig coronary balloon injury model that vitamins C and E as well as probucol had beneficial effects on the vessel response to injury measured by morphometry These effects correlated with an inhibition in the ability to oxidize LDLs ex vivo, suggesting that the morphological response w...

journal_title：Circulation

authors： Nunes GL,Robinson K,Kalynych A,King SB 3rd,Sgoutas DS,Berk BC

更新日期：1997-11-18 00:00:00

abstract：:Twenty-four hour noninvasive ambulatory blood pressure and heart rate monitoring was performed on patients who underwent orthotopic cardiac transplantation, as part of the investigation of the de novo hypertension that developes in such patients. Patients with essential hypertension served as control subjects. The res...

journal_title：Circulation

authors： Reeves RA,Shapiro AP,Thompson ME,Johnsen AM

更新日期：1986-03-01 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:Increasingly, the diagnostic codes from administrative claims data are being used as clinical outcomes. METHODS AND RESULTS:Data from the Cardiovascular Health Study (CHS) were used to compare event rates and risk factor associations between adjudicated hospitalized cardiovascular events and claims-based me...

journal_title：Circulation

authors： Psaty BM,Delaney JA,Arnold AM,Curtis LH,Fitzpatrick AL,Heckbert SR,McKnight B,Ives D,Gottdiener JS,Kuller LH,Longstreth WT Jr

更新日期：2016-01-12 00:00:00

abstract：BACKGROUND:This experiment sought to determine the effects of fish oil on superoxide anion production in the myocardium and coronary arteries of atherosclerotic monkeys. Recent evidence indicates that dietary supplementation with fish oil preserves normal vasomotion of atherosclerotic coronary arteries and reduces dama...

journal_title：Circulation

authors： Supari F,Ungerer T,Harrison DG,Williams JK

更新日期：1995-02-15 00:00:00

abstract：:D8/17, a B cell alloantigen, and its occurrence with DR/DQ antigens was examined in 54 patients with rheumatic heart disease and matched North Indian controls. Thirty-four patients (62.9%) carried D8/17 as compared with a frequency of 12.5% in controls (chi 2 by Yates', 18.75; p less than 0.0001). A marginally increas...

journal_title：Circulation

authors： Taneja V,Mehra NK,Reddy KS,Narula J,Tandon R,Vaidya MC,Bhatia ML

更新日期：1989-08-01 00:00:00

abstract：:To describe the coronary arteriographic findings during early transmural myocardial infarction and to define the prevalence of coronary thrombosis by arteriography, we performed coronary arteriography and left ventriculography within 24 hours from symptom onset of transmural myocardial infarction in 517 patients. The ...

journal_title：Circulation

authors： DeWood MA,Spores J,Hensley GR,Simpson CS,Eugster GS,Sutherland KI,Grunwald RP,Shields JP

更新日期：1983-08-01 00:00:00

abstract：BACKGROUND:Hemodialysis vascular access dysfunction is the single most important cause of morbidity in kidney hemodialysis patients. Failure of an arteriovenous polytetrafluoroethylene (PTFE) graft, the most common form of hemodialysis access, is primarily due to intimal hyperplasia and thrombosis at the venous anastom...

journal_title：Circulation

authors： Luo Z,Akita GY,Date T,Treleaven C,Vincent KA,Woodcock D,Cheng SH,Gregory RJ,Jiang C

更新日期：2005-04-05 00:00:00

abstract：BACKGROUND:Despite intensive investigation, how DNA methylation influences endothelial function remains poorly understood. We used methyl-CpG-binding domain protein 2 (MBD2), an interpreter for DNA methylome-encoded information, to dissect the impact of DNA methylation on endothelial function in both physiological and ...

journal_title：Circulation

authors： Rao X,Zhong J,Zhang S,Zhang Y,Yu Q,Yang P,Wang MH,Fulton DJ,Shi H,Dong Z,Wang D,Wang CY

更新日期：2011-06-28 00:00:00

abstract：BACKGROUND:Although the use of physical signs for the diagnosis of ventricular tachycardia (VT) was described in the early 1900s, their value in this role has never been systematically assessed. METHODS AND RESULTS:Using a blinded, randomized protocol, we examined the ability of 26 clinicians to detect ventriculoatria...

journal_title：Circulation

authors： Garratt CJ,Griffith MJ,Young G,Curzen N,Brecker S,Rickards AF,Camm AJ

更新日期：1994-12-01 00:00:00

abstract：BACKGROUND:Risk stratification algorithms for coronary artery bypass grafting (CABG) do not include a weighting for preoperative mild renal impairment defined as a serum creatinine 130 to 199 micromol/L (1.47 to 2.25 mg/dL), which may impact mortality and morbidity after CABG. METHODS AND RESULTS:We reviewed prospecti...

journal_title：Circulation

authors： Zakeri R,Freemantle N,Barnett V,Lipkin GW,Bonser RS,Graham TR,Rooney SJ,Wilson IC,Cramb R,Keogh BE,Pagano D

更新日期：2005-08-30 00:00:00

abstract：:A new two-dimensional echocardiographic technique was developed to detect peripheral right coronary aneurysms in Kawasaki disease. Because the main stem of the right coronary artery runs along the tricuspid valve ring and the posterior interventricular groove, these regions were examined for coronary aneurysms using t...

journal_title：Circulation

authors： Yoshida H,Maeda T,Funabashi T,Nakaya S,Takabatake S,Taniguchi N

更新日期：1982-05-01 00:00:00

abstract：BACKGROUND:The optimal duration of dual-antiplatelet therapy and the risk-benefit ratio for long-term dual-antiplatelet therapy after coronary stenting remain poorly defined. We evaluated the impact of up to 6 versus 24 months of dual-antiplatelet therapy in a broad all-comers patient population receiving a balanced pr...

journal_title：Circulation

authors： Valgimigli M,Campo G,Monti M,Vranckx P,Percoco G,Tumscitz C,Castriota F,Colombo F,Tebaldi M,Fucà G,Kubbajeh M,Cangiano E,Minarelli M,Scalone A,Cavazza C,Frangione A,Borghesi M,Marchesini J,Parrinello G,Ferrari R,P

更新日期：2012-04-24 00:00:00

abstract：BACKGROUND:In the last decades, interest has increased in the potential deleterious atherogenic effects of some cellular elastase activities. The results of experimental and clinical investigations were inconsistent. In this report, we assessed the associations of serum elastase activity and serum elastase inhibitors w...

journal_title：Circulation

authors： Zureik M,Robert L,Courbon D,Touboul PJ,Bizbiz L,Ducimetière P

更新日期：2002-06-04 00:00:00

abstract：BACKGROUND:After cardiopulmonary bypass (CPB), pulmonary hypertension and its associated increased vascular reactivity are a major source of morbidity, particularly for children with increased pulmonary blood flow. Although post-CPB pulmonary hypertension is well described, its mechanisms remain incompletely understood...

journal_title：Circulation

authors： Reddy VM,Hendricks-Munoz KD,Rajasinghe HA,Petrossian E,Hanley FL,Fineman JR

更新日期：1997-02-18 00:00:00