Individualized values for the disappearance rate parameter (Kd) in the enzymatic estimation of infarct size. A critique.

abstract：BACKGROUND:A major advantage of coronary artery bypass graft surgery (CABG) relative to percutaneous coronary intervention is its durability, yet there is a paucity of information on rates and predictors of repeat coronary revascularization after CABG in the modern era. METHODS AND RESULTS:We included patients ≥65 yea...

journal_title：Circulation

authors： Fosbøl EL,Zhao Y,Shahian DM,Grover FL,Edwards FH,Peterson ED

更新日期：2013-04-23 00:00:00

abstract：BACKGROUND:Hypothermic hyperkalemic cardioplegia results in significant myocyte swelling and impaired contractility. These detrimental effects may be eliminated by the addition of an adenosine triphosphate-sensitive potassium (KATP) channel opener. This study evaluated the hypothesis that a KATP channel opener (diazoxi...

journal_title：Circulation

authors： Mizutani S,Prasad SM,Sellitto AD,Schuessler RB,Damiano RJ Jr,Lawton JS

更新日期：2005-08-30 00:00:00

abstract：:The influence of chest compression rate on initial resuscitation success and 24 hr survival after prolonged manual cardiopulmonary resuscitation (CPR) was investigated in 26 morphine-anesthetized dogs (17 to 30 kg). After placement of aortic and right atrial micromanometers and induction of ventricular fibrillation, m...

journal_title：Circulation

authors： Feneley MP,Maier GW,Kern KB,Gaynor JW,Gall SA Jr,Sanders AB,Raessler K,Muhlbaier LH,Rankin JS,Ewy GA

更新日期：1988-01-01 00:00:00

abstract：:Survival data after 8 years of follow-up for all patients and after 7 years for certain subgroups are reported from CASS, a randomized trial of surgical or medical treatment assignment in patients with coronary artery disease who have less than severe angina or are asymptomatic after myocardial infarction. After 8 yea...

journal_title：Circulation

authors： Killip T,Passamani E,Davis K

更新日期：1985-12-01 00:00:00

abstract：:Nineteen patients with chronic low output cardiac failure were studied before, during and after infusion of phentolamine in doses of 10, 20, 30 and 40 microgram/kg/min. Significant reduction of left- and right-sided pressures and increases in cardiac index and heart rate (HR) were present within 15 minutes of starting...

journal_title：Circulation

authors： Stern MA,Gohlke HK,Loeb HS,Croke RP,Gunnar RM

更新日期：1978-07-01 00:00:00

abstract：:The electrophysiologic effects of amiodarone were examined in 13 dogs that received 30 g amiodarone orally during 3 weeks and compared with 13 control dogs that did not receive amiodarone. Longitudinal and transverse epicardial conduction velocities were estimated with a square array of 64 closely spaced electrodes an...

journal_title：Circulation

authors： Anderson KP,Walker R,Dustman T,Lux RL,Ershler PR,Kates RE,Urie PM

更新日期：1989-04-01 00:00:00

abstract：BACKGROUND:Angina symptoms have been reported to predict mortality in men. The aim of this study was to investigate the association between angina symptoms and mortality in women. METHODS AND RESULTS:In 2004, 873 older participants in the Australian Longitudinal Study on Women's Health with self-reported ischemic hear...

journal_title：Circulation

authors： Berecki-Gisolf J,Humphreyes-Reid L,Wilson A,Dobson A

更新日期：2009-12-08 00:00:00

abstract：BACKGROUND:We investigated whether decreased myofilament calcium contractile activation may, in part, contribute to heart failure. METHODS AND RESULTS:Calcium concentration required for 50% activation and Hill coefficient for fibers from nonfailing and failing human hearts at pH 7.1 were not different. Maximum calcium...

journal_title：Circulation

authors： Hajjar RJ,Schwinger RH,Schmidt U,Kim CS,Lebeche D,Doye AA,Gwathmey JK

更新日期：2000-04-11 00:00:00

abstract：:To assess the effects of angioplasty (PTCA) and intracoronary streptokinase (ICSK) on relative myocardial perfusion, we administered 99mTc-macroaggregated albumin (MAA) to the uninvolved coronary artery before successful PTCA in 33 patients and before successful infusion of ICSK in eight patients and of 111In-MAA into...

journal_title：Circulation

authors： Wahr DW,Ports TA,Botvinick EH,Dae M,Schechtmann N,Huberty J,Hattner RS,O'Connell JW,Turley K

更新日期：1985-08-01 00:00:00

abstract：:From January 1968 to June 1975 tricuspid regurgitation was encountered in 238 patients of a total of 1074 patients undergoing operations on the mitral valve. During this time tricuspid annuloplasty (TA) was performed in 137 patients and the tricuspid valve was replaced (TVR) in 101 patients. Comparison of hospital mor...

journal_title：Circulation

authors： Reed GE,Boyd AD,Spencer FC,Engelman RM,Isom OW,Cunningham JN Jr

更新日期：1976-12-01 00:00:00

abstract：:Syncope and sudden death occurs in certain purebred Pug dogs which have been found to have intermittent sinus pauses and paroxysmal second degree heart block on electrocardiographic (ECG) study. We have established a colony of such dogs to study this problem and here report the results of histological examination of t...

journal_title：Circulation

authors： James TN,Robertson BT,Waldo AL,Branch CE

更新日期：1975-12-01 00:00:00

abstract：BACKGROUND:The clinical efficacy of alcohol septal ablation for drug-refractory hypertrophic cardiomyopathy remains unclear. This study examines the outcome of alcohol septal ablation performed at a tertiary hypertrophic cardiomyopathy referral center. METHODS AND RESULTS:Among 601 patients with severely symptomatic o...

journal_title：Circulation

authors： Sorajja P,Valeti U,Nishimura RA,Ommen SR,Rihal CS,Gersh BJ,Hodge DO,Schaff HV,Holmes DR Jr

更新日期：2008-07-08 00:00:00

abstract：BACKGROUND:Increased diastolic chamber stiffness (increased DCS) during angina (demand ischemia) has been postulated to be generated by increased diastolic myocyte calcium concentration. METHODS AND RESULTS:We reproduced demand ischemia in isolated isovolumically contracting red-cell-perfused rabbit hearts by imposing...

journal_title：Circulation

authors： Varma N,Eberli FR,Apstein CS

更新日期：2000-05-09 00:00:00

abstract：BACKGROUND:Diastolic dysfunction associated with high blood pressure (BP) leads to cardiac remodeling and fibrosis and progression to congestive heart failure. B-type natriuretic peptide (BNP) has BP-lowering, antifibrotic, and antihypertrophic properties, which makes BNP an attractive agent for attenuating the adverse...

journal_title：Circulation

authors： Cataliotti A,Tonne JM,Bellavia D,Martin FL,Oehler EA,Harders GE,Campbell JM,Peng KW,Russell SJ,Malatino LS,Burnett JC Jr,Ikeda Y

更新日期：2011-03-29 00:00:00

abstract：BACKGROUND:Coronary artery bypass surgery (CABG) has been associated with a range of neurological and neuropsychological complications from stroke to cognitive problems such as memory and problem solving disturbance. However, little is known about the impact of percutaneous coronary intervention (PCI) on neuropsycholog...

journal_title：Circulation

authors： Währborg P,Booth JE,Clayton T,Nugara F,Pepper J,Weintraub WS,Sigwart U,Stables RH,SoS Neuropsychology Substudy Investigators.

更新日期：2004-11-30 00:00:00

abstract：BACKGROUND:Mutations in the cardiac sodium (Na) channel gene (SCN5A) give rise to the congenital long-QT syndrome (LQT3) and the Brugada syndrome. Na channel blockade by antiarrhythmic drugs improves the QT interval prolongation in LQT3 but worsens the Brugada syndrome ST-segment elevation. Although Na channel blockade...

journal_title：Circulation

authors： Viswanathan PC,Bezzina CR,George AL Jr,Roden DM,Wilde AA,Balser JR

更新日期：2001-09-04 00:00:00

abstract：BACKGROUND:Despite successful surgical correction, morbidity of patients with coarctation of the aorta is increased. It is well known that these patients have impaired elastic properties of the prestenotic arteries. To find out whether these abnormalities are primarily present or develop later, we studied 17 newborns b...

journal_title：Circulation

authors： Vogt M,Kühn A,Baumgartner D,Baumgartner C,Busch R,Kostolny M,Hess J

更新日期：2005-06-21 00:00:00

abstract：BACKGROUND:In contrast to healthy volunteers, regional differences of cardiac autonomic innervation have been described through the use of C11-hydroxyephedrine positron emission tomography (HED-PET) in the left ventricles of patients with dilated cardiomyopathy. The goal of the present study was to correlate HED-PET im...

journal_title：Circulation

authors： Ungerer M,Hartmann F,Karoglan M,Chlistalla A,Ziegler S,Richardt G,Overbeck M,Meisner H,Schömig A,Schwaiger M

更新日期：1998-01-20 00:00:00

abstract：BACKGROUND:Heterogeneous electrophysiological properties, which may be due in part to autonomic innervation, are important in the maintenance of atrial fibrillation (AF). We hypothesized that heterogeneous sympathetic denervation with phenol would create a milieu for sustained AF. METHODS AND RESULTS:After the determi...

journal_title：Circulation

authors： Olgin JE,Sih HJ,Hanish S,Jayachandran JV,Wu J,Zheng QH,Winkle W,Mulholland GK,Zipes DP,Hutchins G

更新日期：1998-12-08 00:00:00

abstract：BACKGROUND:The atrioventricular node (AVN) is the only normal electrical link between the upper and lower chambers of the heart. The AVN modulates transmission of impulses, thus coordinating the contraction of the atria and ventricles. METHODS AND RESULTS:Structural and functional complexity, combined with the absence...

journal_title：Circulation

authors： Efimov IR,Mazgalev TN

更新日期：1998-07-07 00:00:00

abstract：BACKGROUND:This study examines the cellular basis for the phenotypic appearance of broad-based T waves, increased transmural dispersion of repolarization (TDR), and torsade de pointes (TdP) induced by beta-adrenergic agonists under conditions mimicking the LQT1 form of the congenital long-QT syndrome. METHODS AND RESU...

journal_title：Circulation

authors： Shimizu W,Antzelevitch C

更新日期：1998-11-24 00:00:00

abstract：BACKGROUND:Selection of treatment in vasovagal syndrome should be guided by the mechanism of symptoms. This study determined whether a simple drug test may assess one mechanism. METHODS AND RESULTS:To identify patients at risk of severe cardioinhibitory response of vagal origin, we infused 20 mg ATP into 316 patients ...

journal_title：Circulation

authors： Flammang D,Church T,Waynberger M,Chassing A,Antiel M

更新日期：1997-08-19 00:00:00

abstract：:In this report we describe electrophysiologic and histologic findings in hearts and endocardially resected preparations from patients with sustained ventricular tachycardias in the chronic phase of myocardial infarction. We recorded simultaneously from 64 endocardial sites during tachycardia in 72 patients that were o...

journal_title：Circulation

authors： de Bakker JM,van Capelle FJ,Janse MJ,Wilde AA,Coronel R,Becker AE,Dingemans KP,van Hemel NM,Hauer RN

更新日期：1988-03-01 00:00:00

abstract：BACKGROUND:Depressed ventricular performance and neurohormonal activation are key pathophysiological features of congestive heart failure (CHF). Although angiotensin-converting enzyme inhibitors and beta-adrenoceptor blockers exert beneficial effects in CHF, mortality remains unacceptably high, and the development of f...

journal_title：Circulation

authors： Kaye DM,Mansfield D,Aggarwal A,Naughton MT,Esler MD

更新日期：2001-05-15 00:00:00

abstract：BACKGROUND:Autosomal dominant hypercholesterolemia (ADH) is characterized by elevated low-density lipoprotein cholesterol levels and premature cardiovascular disease. Mutations in the genes encoding for low-density lipoprotein receptor (LDLR), apolipoprotein B (APOB), and proprotein convertase subtilisin/kexin 9 (PCSK9...

journal_title：Circulation

authors： van der Graaf A,Avis HJ,Kusters DM,Vissers MN,Hutten BA,Defesche JC,Huijgen R,Fouchier SW,Wijburg FA,Kastelein JJ,Wiegman A

更新日期：2011-03-22 00:00:00

abstract：:Medical treatment of heart disease has improved significantly in the past 30 years. The spectacular change in the natural history of rheumatic heart disease is apparent from a 1948 article that reported that 42% of children with rheumatic heart disease died of rheumatic infection or bacterial endocarditis. Antibiotics...

journal_title：Circulation

authors： Ross RS

更新日期：1979-12-01 00:00:00

abstract：BACKGROUND:We tested the hypothesis that nuclear factor-kappaB (NF-kappaB) activity contributes to vascular endothelial dysfunction with aging and obesity in humans. METHODS AND RESULTS:We conducted a randomized, double-blind, placebo-controlled crossover study in 14 nondiabetic overweight or obese (body mass index > ...

journal_title：Circulation

authors： Pierce GL,Lesniewski LA,Lawson BR,Beske SD,Seals DR

更新日期：2009-03-10 00:00:00

abstract：BACKGROUND:The transient outward potassium current (I(to)) encoded by the Kv4 family of potassium channels is important in the repolarization of cardiac myocytes. KChIPs are a recently identified group of Ca2+-binding accessory subunits that modulate Kv4-encoded currents. KChIP2 is the only family member expressed in t...

journal_title：Circulation

authors： Deschênes I,DiSilvestre D,Juang GJ,Wu RC,An WF,Tomaselli GF

更新日期：2002-07-23 00:00:00

abstract：:Esophageal perforation is a dreaded complication of atrial fibrillation ablation that occurs in 0.1% to 0.25% of atrial fibrillation ablation procedures. Delayed diagnosis is associated with the development of atrial-esophageal fistula (AEF) and increased mortality. The relationship between the esophagus and the left ...

journal_title：Circulation

authors： Kapur S,Barbhaiya C,Deneke T,Michaud GF

更新日期：2017-09-26 00:00:00

abstract：:Competing risks occur frequently in the analysis of survival data. A competing risk is an event whose occurrence precludes the occurrence of the primary event of interest. In a study examining time to death attributable to cardiovascular causes, death attributable to noncardiovascular causes is a competing risk. When ...

journal_title：Circulation

authors： Austin PC,Lee DS,Fine JP

更新日期：2016-02-09 00:00:00