Doppler estimation of left ventricular filling pressure in sinus tachycardia. A new application of tissue doppler imaging.

abstract：:Activation of the sympathetic nervous system is an important factor in the genesis of ventricular arrhythmias in patients with impaired ventricular function. Such patients have an appropriate substrate that is capable of generating rhythm abnormalities, which may be related to enhanced automaticity, triggered automati...

journal_title：Circulation

authors： Podrid PJ,Fuchs T,Candinas R

更新日期：1990-08-01 00:00:00

abstract：BACKGROUND:In a correlative functional/histopathologic study, we investigated the regional deformation characteristics of both chronic nontransmural and transmural infarctions before and after a dobutamine challenge. METHODS AND RESULTS:After stenosing copper-coated stent implantation to produce circumflex artery endo...

journal_title：Circulation

authors： Weidemann F,Dommke C,Bijnens B,Claus P,D'hooge J,Mertens P,Verbeken E,Maes A,Van de Werf F,De Scheerder I,Sutherland GR

更新日期：2003-02-18 00:00:00

abstract：:The effects of therapeutic levels of quinidine were studied in an ischemic gap preparation of reflected reentry. The preparation consisted of a Purkinje fiber mounted in a three-compartment chamber. A narrow central compartment was perfused with a solution prepared to mimic the extracellular milieu at a site of ischem...

journal_title：Circulation

authors： Shen XT,Antzelevitch C

更新日期：1986-06-01 00:00:00

abstract：BACKGROUND:Adrenergic activation is thought to be an important determinant of outcome in subjects with chronic heart failure (CHF), but baseline or serial changes in adrenergic activity have not been previously investigated in a large patient sample treated with a powerful antiadrenergic agent. METHODS AND RESULTS:Sys...

journal_title：Circulation

authors： Bristow MR,Krause-Steinrauf H,Nuzzo R,Liang CS,Lindenfeld J,Lowes BD,Hattler B,Abraham WT,Olson L,Krueger S,Thaneemit-Chen S,Hare JM,Loeb HS,Domanski MJ,Eichhorn EJ,Zelis R,Lavori P

更新日期：2004-09-14 00:00:00

abstract：BACKGROUND:Trends in cardiovascular mortality across Europe demonstrate significant geographical variation, and an understanding of these trends has a central role in global public health. METHODS AND RESULTS:Ischemic heart disease and cerebrovascular disease age-standardized death rates (as per International Classifi...

journal_title：Circulation

authors： Hartley A,Marshall DC,Salciccioli JD,Sikkel MB,Maruthappu M,Shalhoub J

更新日期：2016-05-17 00:00:00

abstract：BACKGROUND:Bradycardia and sinus node dysfunction are common causes of early postoperative morbidity in orthotopic heart transplant recipients and frequently require the use of chronotropic drugs or permanent pacemakers. Several causes have been postulated, including surgical trauma to the sinus node and its blood supp...

journal_title：Circulation

authors： Rothman SA,Jeevanandam V,Combs WG,Furukawa S,Hsia HH,Eisen HJ,Buxton AE,Miller JM

更新日期：1996-11-01 00:00:00

abstract：BACKGROUND:Matricellular proteins are extracellular matrix proteins that do not contribute directly to tissue integrity but are capable of modulating cell function. We hypothesized that the matricellular protein thrombospondin (TSP)-1, a potent inhibitor of angiogenesis and activator of transforming growth factor (TGF-...

journal_title：Circulation

authors： Frangogiannis NG,Ren G,Dewald O,Zymek P,Haudek S,Koerting A,Winkelmann K,Michael LH,Lawler J,Entman ML

更新日期：2005-06-07 00:00:00

abstract：BACKGROUND:Digoxin is commonly prescribed in symptomatic paroxysmal atrial fibrillation (AF) but has never been evaluated in this condition. METHODS AND RESULTS:From a multicenter registry, 43 representative patients with frequent symptomatic AF episodes were recruited into a randomized, double-blind crossover compari...

journal_title：Circulation

authors： Murgatroyd FD,Gibson SM,Baiyan X,O'Nunain S,Poloniecki JD,Ward DE,Malik M,Camm AJ

更新日期：1999-06-01 00:00:00

abstract：BACKGROUND:Sugar-sweetened beverage consumption is associated with weight gain and risk of type 2 diabetes mellitus. Few studies have tested for a relationship with coronary heart disease (CHD) or intermediate biomarkers. The role of artificially sweetened beverages is also unclear. METHODS AND RESULTS:We performed an...

journal_title：Circulation

authors： de Koning L,Malik VS,Kellogg MD,Rimm EB,Willett WC,Hu FB

更新日期：2012-04-10 00:00:00

abstract：:We studied isochronal maps of ventricular activation during ventricular arrhythmias induced by programmed premature stimulation in dogs 3-5 days after ligation of the left anterior descending coronary artery. The entire epicardial surface and selective intramural sites were recorded using a computerized multiplexing t...

journal_title：Circulation

authors： Mehra R,Zeiler RH,Gough WB,El-Sherif N

更新日期：1983-01-01 00:00:00

abstract：:Intravascular ultrasound imaging is a promising new method for assessing vascular morphology. We evaluated the capability of intravascular ultrasound to quantify pulmonary artery (PA) morphology in vitro and explored the feasibility of in vivo PA imaging in animals and humans. In the in vitro study of 15 PA segments, ...

journal_title：Circulation

authors： Pandian NG,Weintraub A,Kreis A,Schwartz SL,Konstam MA,Salem DN

更新日期：1990-06-01 00:00:00

abstract：:The long-term results of 414 patients who underwent repair of tetralogy of Fallot between 1967 and 1977 were studied and correlated with the results of others. There were nine late deaths (8-year actuarial survival 95.8%). Six of the deaths wee directly related to the malformation or its treatment. Eight patients (2.4...

journal_title：Circulation

authors： Katz NM,Blackstone EH,Kirklin JW,Pacifico AD,Bargeron LM Jr

更新日期：1982-02-01 00:00:00

abstract：BACKGROUND:Cardiopulmonary resuscitation (CPR) is initiated in hospitalized children with bradycardia and poor perfusion. However, their rate of progression to pulseless cardiac arrest despite CPR and the differences in survival compared with initially pulseless arrest are unknown. We examined the prevalence and predic...

journal_title：Circulation

authors： Khera R,Tang Y,Girotra S,Nadkarni VM,Link MS,Raymond TT,Guerguerian AM,Berg RA,Chan PS,American Heart Association’s Get With the Guidelines-Resuscitation Investigators.

更新日期：2019-07-30 00:00:00

abstract：BACKGROUND:In the event of rupture of an abdominal aortic aneurysm (AAA), mortality is very high. AAA prevalence and incidence of ruptures have been reported to be decreasing. The treatment of AAA has also undergone a change in recent decades with a shift toward endovascular aneurysm repair (EVAR). Our aim was to evalu...

journal_title：Circulation

authors： Laine MT,Laukontaus SJ,Sund R,Aho PS,Kantonen I,Albäck A,Venermo M

更新日期：2017-10-31 00:00:00

abstract：BACKGROUND:Chronic pulmonary regurgitation after repair of tetralogy of Fallot (TOF) may lead to right ventricular dilatation, which may be accompanied by ventricular tachycardia and sudden death. We aimed to examine the effects of pulmonary valve replacement (PVR) on (1) certain electrocardiographic markers predictive...

journal_title：Circulation

authors： Therrien J,Siu SC,Harris L,Dore A,Niwa K,Janousek J,Williams WG,Webb G,Gatzoulis MA

更新日期：2001-05-22 00:00:00

abstract：BACKGROUND:More than 300 000 out-of-hospital cardiac arrests (OHCA) occur each year in the United States. The relationship between time of day and OHCA outcomes in the prehospital setting is unknown. Any such association may have important implications for emergency medical services resource allocation. METHODS AND RE...

journal_title：Circulation

authors： Wallace SK,Abella BS,Shofer FS,Leary M,Agarwal AK,Mechem CC,Gaieski DF,Becker LB,Neumar RW,Band RA

更新日期：2013-04-16 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：: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：:Optimal electrode position for long-term transvenous cardiac pacing is in the apex of the right ventricle. Intracardiac electrograms, surface electrocardiograms, frontal fluoroscopy, lateral roentgenograms, and pacing threshold levels were studied in two groups of patients: One group was comprised of five patients wit...

journal_title：Circulation

authors： Gulotta SJ

更新日期：1970-10-01 00:00:00

abstract：BACKGROUND:Conversion of chronic atrial fibrillation (AF) is associated with atrial stunning, but the short-term effect of a brief episode of AF on left atrial appendage (LAA) emptying velocity is unknown. The purpose of this study was to determine whether a short episode of AF affects left atrial function and whether ...

journal_title：Circulation

authors： Daoud EG,Marcovitz P,Knight BP,Goyal R,Man KC,Strickberger SA,Armstrong WF,Morady F

更新日期：1999-06-15 00:00:00

abstract：BACKGROUND:The Jun family of activator protein 1 (AP-1) transcription factors (c-Jun, JunB, and JunD) is involved in fundamental biological processes such as proliferation, apoptosis, tumor angiogenesis, and hypertrophy. The role of individual AP-1 transcription factors in the stressed heart is not clear. In the presen...

journal_title：Circulation

authors： Hilfiker-Kleiner D,Hilfiker A,Kaminski K,Schaefer A,Park JK,Michel K,Quint A,Yaniv M,Weitzman JB,Drexler H

更新日期：2005-09-06 00:00:00

abstract：:Between July 1985 and September 1987, 25 patients underwent 26 carotid endarterectomies based on an abnormal duplex scan (B-mode ultrasonography and pulsed-Doppler sound spectral analysis) indicative of severe stenosis or ulceration. Arteriography was not performed because of severe unstable angina requiring coronary ...

journal_title：Circulation

authors： Marshall WG Jr,Kouchoukos NT,Murphy SF,Pelate C

更新日期：1988-09-01 00:00:00

abstract：BACKGROUND:Peak early-diastolic mitral annulus velocity (e') by tissue Doppler imaging has been introduced as a clinical marker of diastolic function. This study investigates whether lengthening load (early-diastolic load) and restoring forces are determinants of e' in addition to rate of left ventricular (LV) relaxati...

journal_title：Circulation

authors： Opdahl A,Remme EW,Helle-Valle T,Lyseggen E,Vartdal T,Pettersen E,Edvardsen T,Smiseth OA

更新日期：2009-05-19 00:00:00

abstract：:These types of studies lay the foundation for understanding the human apolipoproteins at the genetic level. In addition, through a few specific examples, we have already shown evidence at the DNA level that lesions in apolipoprotein genes can play a role in human atherosclerosis. This work is in its infancy, but we ho...

journal_title：Circulation

authors： Breslow JL

更新日期：1984-06-01 00:00:00

abstract：BACKGROUND:Administration of protease inhibitors (PIs) to HIV-infected individuals has been associated with hyperlipidemia. In this study, we characterized the lipoprotein profile in subjects receiving ritonavir, indinavir, or nelfinavir, alone or in combination with saquinavir. METHODS AND RESULTS:Plasma lipoprotein ...

journal_title：Circulation

authors： Périard D,Telenti A,Sudre P,Cheseaux JJ,Halfon P,Reymond MJ,Marcovina SM,Glauser MP,Nicod P,Darioli R,Mooser V

更新日期：1999-08-17 00:00:00

abstract：BACKGROUND:Increased expression of osteopontin (OPN), fibroblast growth factors (FGFs), and their type-1 receptor (FGFR-1) is associated with neointima formation and atherosclerosis. This study tested the hypothesis that ligand activation of FGFR-1 stimulates OPN expression in rat aortic smooth muscle cells (RASMCs), e...

journal_title：Circulation

authors： Li G,Oparil S,Kelpke SS,Chen YF,Thompson JA

更新日期：2002-08-13 00:00:00

abstract：:Cardiac arrest systems of care are successfully coordinating community, emergency medical services, and hospital efforts to improve the process of care for patients who have had a cardiac arrest. As a result, the number of people surviving sudden cardiac arrest is increasing. However, physical, cognitive, and emotiona...

journal_title：Circulation

authors： Sawyer KN,Camp-Rogers TR,Kotini-Shah P,Del Rios M,Gossip MR,Moitra VK,Haywood KL,Dougherty CM,Lubitz SA,Rabinstein AA,Rittenberger JC,Callaway CW,Abella BS,Geocadin RG,Kurz MC,American Heart Association Emergency Cardiovasc

更新日期：2020-03-24 00:00:00

abstract：:Both the Veterans Administration Cooperative Study and the European Coronary Surgery Study have provided only brief accounts of graft patency rates in their surgically treated patients. In the Veterans Administration Cooperative Study, at an average of 1 year after operation, 69% of the grafts were patent among 208 pa...

journal_title：Circulation

authors： Bourassa MG,Fisher LD,Campeau L,Gillespie MJ,McConney M,Lespérance J

更新日期：1985-12-01 00:00:00

abstract：:Variations in the frequency of complex ventricular arrhythmias were evaluated by consecutive 24-hour long-term electrocardiographic recordings over 4 days using a two-channel recorder and computer-assisted analysis system with a weighted relative mean error of 7.5 +/ 5% (SD). Twenty patients (mean age 58 +/- 9 years ...

journal_title：Circulation

authors： Michelson EL,Morganroth J

更新日期：1980-04-01 00:00:00

abstract：BACKGROUND:Preclinical systolic or diastolic dysfunction is associated with increased morbidity and mortality. We postulated that plasma brain natriuretic peptide (BNP) might serve as a biomarker for preclinical ventricular dysfunction (PCVD) but that the discriminatory values for BNP may vary with age and sex. METHOD...

journal_title：Circulation

authors： Redfield MM,Rodeheffer RJ,Jacobsen SJ,Mahoney DW,Bailey KR,Burnett JC Jr

更新日期：2004-06-29 00:00:00