Widening of the excitable gap during pharmacological cardioversion of atrial fibrillation in the goat: effects of cibenzoline, hydroquinidine, flecainide, and d-sotalol.

abstract：BACKGROUND:The combination of statin therapy and PCSK9 (proprotein convertase subtilisin/kexin type 9) inhibition markedly lowers low-density lipoprotein cholesterol (LDL-C) and reduces cardiovascular event rates. Whether residual inflammatory risk as measured by on-treatment high sensitivity C-reactive protein (hsCRP)...

journal_title：Circulation

authors： Pradhan AD,Aday AW,Rose LM,Ridker PM

更新日期：2018-07-10 00:00:00

abstract：BACKGROUND:The synthetic catecholamine dobutamine increases stroke volume in normal subjects and in patients with congestive heart failure. In addition to its direct influence on myocardial contractility, dobutamine may significantly modulate vascular tone because of its alpha- and beta-adrenergic agonist activity. ME...

journal_title：Circulation

authors： Binkley PF,Murray KD,Watson KM,Myerowitz PD,Leier CV

更新日期：1991-09-01 00:00:00

abstract：BACKGROUND:Lipoprotein(a) [Lp(a)] may play a causal role in atherosclerosis. PCSK9 (proprotein convertase subtilisin/kexin 9) inhibitors have been shown to significantly reduce plasma Lp(a) concentration. However, the relationship between Lp(a) levels, PCSK9 inhibition, and cardiovascular risk reduction remains undefin...

journal_title：Circulation

authors： O'Donoghue ML,Fazio S,Giugliano RP,Stroes ESG,Kanevsky E,Gouni-Berthold I,Im K,Lira Pineda A,Wasserman SM,Češka R,Ezhov MV,Jukema JW,Jensen HK,Tokgözoğlu SL,Mach F,Huber K,Sever PS,Keech AC,Pedersen TR,Sabatine MS

更新日期：2019-03-19 00:00:00

abstract：BACKGROUND:It is still unclear what role the sinus node may play in the genesis or perpetuation of atrial fibrillation. Therefore, we studied the electrical activity in different regions of the sinus node during atrial fibrillation. METHODS AND RESULTS:In Langendorff-perfused rabbit hearts, paroxysms of atrial fibrill...

journal_title：Circulation

authors： Kirchhof CJ,Allessie MA

更新日期：1992-07-01 00:00:00

abstract：:The National Heart, Lung, and Blood Institute and Office of Rare Diseases at the National Institutes of Health organized a workshop (September 14 to 15, 2006, in Bethesda, Md) to advise on new research directions needed for improved identification and treatment of rare inherited arrhythmias. These included the followi...

journal_title：Circulation

authors： Lehnart SE,Ackerman MJ,Benson DW Jr,Brugada R,Clancy CE,Donahue JK,George AL Jr,Grant AO,Groft SC,January CT,Lathrop DA,Lederer WJ,Makielski JC,Mohler PJ,Moss A,Nerbonne JM,Olson TM,Przywara DA,Towbin JA,Wang LH,M

更新日期：2007-11-13 00:00:00

abstract：:We made continuous electrocardiographic recordings on magnetic tape during 15 episodes of ischemia in five patients with variant angina to determine the characteristics of the QRS changes. Orthogonal leads were used and the electrocardiograms were analyzed visually and by digital computer. Changes were quantified by s...

journal_title：Circulation

authors： Barnhill JE,Wikswo JP Jr,Dawson AK,Gundersen S,Robertson RM,Robertson D,Virmani R,Smith RF

更新日期：1985-05-01 00:00:00

abstract：BACKGROUND:We hypothesized that during demand ischemia, abnormal perfusion will precede abnormal function, the spatial extent of perfusion abnormality will be greater than that of functional abnormality, and the spatiotemporal disparity between abnormal perfusion and abnormal function will be more marked in the presenc...

journal_title：Circulation

authors： Leong-Poi H,Rim SJ,Le DE,Fisher NG,Wei K,Kaul S

更新日期：2002-02-26 00:00:00

abstract：BACKGROUND:Dynamic intraventricular flow velocities after valve replacement for aortic stenosis have been associated with high in-hospital morbidity and mortality. The aims of the present study were to determine the mechanisms and preoperative predictors of abnormal flow velocity (AFV) after valve replacement for aorti...

journal_title：Circulation

authors： Bartunek J,Sys SU,Rodrigues AC,van Schuerbeeck E,Mortier L,de Bruyne B

更新日期：1996-02-15 00:00:00

abstract：BACKGROUND:Many members of families with inherited long-QT (LQT) syndrome have mutations in HERG, a gene encoding a cardiac potassium channel that is modulated by extracellular potassium. We hypothesized that an increase in serum potassium would normalize repolarization in these patients. METHODS AND RESULTS:We studie...

journal_title：Circulation

authors： Compton SJ,Lux RL,Ramsey MR,Strelich KR,Sanguinetti MC,Green LS,Keating MT,Mason JW

更新日期：1996-09-01 00:00:00

abstract：BACKGROUND:In vitro and in vivo studies have demonstrated both anticoagulant and antiproliferative effects of heparin. The purpose of this study was to assess the effect of local intramural delivery of heparin, using heparin-coated hydrogel balloons, on platelet deposition and early smooth muscle cell proliferation aft...

journal_title：Circulation

authors： Azrin MA,Mitchel JF,Fram DB,Pedersen CA,Cartun RW,Barry JJ,Bow LM,Waters DD,McKay RG

更新日期：1994-07-01 00:00:00

abstract：BACKGROUND:The ability of echocardiographic dyssynchrony to predict response to cardiac resynchronization therapy (CRT) has been unclear. METHODS AND RESULTS:A prospective, longitudinal study was designed with predefined dyssynchrony indexes and outcome variables to test the hypothesis that baseline dyssynchrony is as...

journal_title：Circulation

authors： Gorcsan J 3rd,Oyenuga O,Habib PJ,Tanaka H,Adelstein EC,Hara H,McNamara DM,Saba S

更新日期：2010-11-09 00:00:00

abstract：BACKGROUND:Patients with advanced heart failure have bioenergetic abnormalities of skeletal muscle metabolism during exercise. Using 31P magnetic resonance spectroscopy, we sought to determine whether skeletal metabolic responses to exercise are normalized by orthotopic cardiac transplantation. METHODS AND RESULTS:Fou...

journal_title：Circulation

authors： Stratton JR,Kemp GJ,Daly RC,Yacoub M,Rajagopalan B

更新日期：1994-04-01 00:00:00

abstract：:The pulmonary function of ten adult patients with congenital pulmonary valvular stenosis was investigated. The patients clearly showed smaller lungs than healthy control subjects of equivalent age and height; lung elastic recoil pressure was normal at any given percentage of measured total lung capacity, indicating th...

journal_title：Circulation

authors： De Troyer A,Yernault JC,Englert M

更新日期：1977-10-01 00:00:00

abstract：:For monotherapy, beta-blockers and calcium-entry blockers are effective and safe antianginal medications. For prophylaxis of myocardial ischemia, a different mechanism of action for each class of drugs is reflected by the different heart rate and rate-pressure product during exercise. In patients who continue to have ...

journal_title：Circulation

authors： Kostuk WJ,Pflugfelder P

更新日期：1987-06-01 00:00:00

abstract：:The time of acute myocardial infarction was determined in all 1,741 patients of the ISAM (Intravenous Streptokinase in Acute Myocardial Infarction) Study, based on onset of clinical symptoms and evaluation of plasma CK-MB enzyme time-activity curves. The incidence of myocardial infarction was markedly increased betwee...

journal_title：Circulation

authors： Willich SN,Linderer T,Wegscheider K,Leizorovicz A,Alamercery I,Schröder R

更新日期：1989-10-01 00:00:00

abstract：BACKGROUND:Intravenous rt-PA (recombinant tissue-type plasminogen activator) is effective in improving outcomes in ischemic stroke; however, there are few data on the use of rt-PA in patients who are receiving a non-vitamin K antagonist oral anticoagulant (NOAC). METHODS:Using data from the American Heart Association ...

journal_title：Circulation

authors： Xian Y,Federspiel JJ,Hernandez AF,Laskowitz DT,Schwamm LH,Bhatt DL,Smith EE,Fonarow GC,Peterson ED

更新日期：2017-03-14 00:00:00

abstract：BACKGROUND:Epidemiological studies aimed at correlating coronary heart disease (CHD) with serum ferritin levels have thus far yielded inconsistent results. We hypothesized that a labile iron component associated with non-transferrin-bound iron (NTBI) that appears in individuals with overt or cryptic iron overload might...

journal_title：Circulation

authors： van der A DL,Marx JJ,Grobbee DE,Kamphuis MH,Georgiou NA,van Kats-Renaud JH,Breuer W,Cabantchik ZI,Roest M,Voorbij HA,van der Schouw YT

更新日期：2006-04-25 00:00:00

abstract：:Finn Waagstein was born in Copenhagen in 1938. He graduated from Aarhus University Medical School in 1964. He received his cardiology training in the Sahlgrenska University Hospital at the University of Gothenburg, Sweden. He was appointed Associate Professor in 1980, and he assisted in establishing and directing the ...

journal_title：Circulation

authors： Waagstein F,Rutherford JD

更新日期：2017-09-05 00:00:00

abstract：:An aneurysm of the membranous septum was found frequently in patients with ventricular septal defect; although appearance at catheterization during infancy was not common, aneurysms were detected in about half of the patients older than 2 years of age. A significant decrease in the left-to-right shunt occurred with th...

journal_title：Circulation

authors： Nugent EW,Freedom RM,Rowe RD,Wagner HR,Rees JK

更新日期：1977-08-01 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：:The effect of timolol vs placebo on the frequency of anginal episodes, nitroglycerin consumption and exercise performance was investigated in a double-blind, randomized, crossover study in 23 patients with angina pectoris. The optimal dose of timolol (10-30 mg twice daily) for each patient was titrated by exercise stu...

journal_title：Circulation

authors： Aronow WS,Turbow M,Van Camp S,Lurie M,Whittaker K

更新日期：1980-01-01 00:00:00

abstract：BACKGROUND:Endogenous nitric oxide (NO) has been reported to inhibit oxygen consumption in the normal heart, so that nonselective inhibition of NO synthase (NOS) caused an increase of myocardial oxygen consumption (MVO2). Although endothelial NOS responses are depressed in congestive heart failure (CHF), inducible NOS ...

journal_title：Circulation

authors： Chen Y,Traverse JH,Du R,Hou M,Bache RJ

更新日期：2002-07-09 00:00:00

abstract：BACKGROUND:Randomized clinical trials have shown that multivessel coronary angioplasty is feasible and provides similar long-term survival as bypass surgery in selected patients. However, the higher need for repeat intervention, in particular, coronary artery bypass graft surgery, remains a problem. The objective of th...

journal_title：Circulation

authors： Moussa I,Reimers B,Moses J,Di Mario C,Di Francesco L,Ferraro M,Colombo A

更新日期：1997-12-02 00:00:00

abstract：:To assess whether gross pathologic differences exist between hearts with left bundle branch block (LBBB) and left-axis deviation (LAXD) and those with LBBB and a normal frontal plane axis, we examined 70 hearts with LBBB in a series of 1410 sequential dissections (5%). Thirty-two hearts had LAXD and 34 had normal axes...

journal_title：Circulation

authors： Havelda CJ,Sohi GS,Flowers NC,Horan LG

更新日期：1982-03-01 00:00:00

abstract：BACKGROUND:A variable degree of smooth muscle cell (SMC) proliferation after balloon injury has been reported in previous rat studies. It is unknown whether balloon injury induces c-fos expression and whether it is related to the degree of vascular injury in vivo. Therefore, we tested the hypothesis that proportional i...

journal_title：Circulation

authors： Indolfi C,Esposito G,Di Lorenzo E,Rapacciuolo A,Feliciello A,Porcellini A,Avvedimento VE,Condorelli M,Chiariello M

更新日期：1995-09-01 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:Endothelial progenitor cells (EPCs) circulate in adult peripheral blood (PB) and contribute to neovascularization. However, little is known regarding whether EPCs and their putative precursor, CD34-positive mononuclear cells (MNC(CD34+)), are mobilized into PB in acute ischemic events in humans. METHODS AND...

journal_title：Circulation

authors： Shintani S,Murohara T,Ikeda H,Ueno T,Honma T,Katoh A,Sasaki K,Shimada T,Oike Y,Imaizumi T

更新日期：2001-06-12 00:00:00

abstract：BACKGROUND:Postprandial hyperglycemia may be a risk factor for cardiovascular disease. We compared the effects of two insulin secretagogues, repaglinide and glyburide, known to have different efficacy on postprandial hyperglycemia, on carotid intima-media thickness (CIMT) and markers of systemic vascular inflammation i...

journal_title：Circulation

authors： Esposito K,Giugliano D,Nappo F,Marfella R,Campanian Postprandial Hyperglycemia Study Group.

更新日期：2004-07-13 00:00:00

abstract：BACKGROUND:The role of doxazosin in treatment of hypertension remains controversial. METHODS AND RESULTS:We evaluated the effects on blood pressure (BP) and biochemical parameters of doxazosin GITS (gastrointestinal therapeutic system) as a third-line antihypertensive agent among 10,069 participants in the Anglo-Scand...

journal_title：Circulation

authors： Chapman N,Chang CL,Dahlöf B,Sever PS,Wedel H,Poulter NR,ASCOT Investigators.

更新日期：2008-07-01 00:00:00

abstract：BACKGROUND:Pulmonary hypertension induced by chronic hypoxia is characterized by thickening of pulmonary artery walls, elevated pulmonary vascular resistance, and right-heart failure. Prostacyclin analogues reduce pulmonary pressures in this condition; raising the possibility that cycloxygenase-2 (COX-2) modulates the ...

journal_title：Circulation

authors： Pidgeon GP,Tamosiuniene R,Chen G,Leonard I,Belton O,Bradford A,Fitzgerald DJ

更新日期：2004-10-26 00:00:00