Abstract:
BACKGROUND:Whether myocardial reperfusion obtained with thrombolysis or primary angioplasty is associated with a similar recovery of function and with the same risk of hemorrhagic infarction is unknown. We evaluated the effects of mechanical and pharmacological reperfusion (with or without a plasma lytic state) on infarct size, myocardial hemorrhage, and left ventricular (LV) function in a canine model. METHODS AND RESULTS:Six groups of six dogs were subjected to balloon occlusion of the left anterior descending coronary artery (LAD) followed by 2 hours of reperfusion. The study had a two-by-three factorial design with two occlusion periods (90 and 240 minutes) and three different reperfusion strategies (placebo, 0.4 mg/kg recombinant tissue plasminogen activator, and 40 microg/kg recombinant staphylokinase). In a seventh control group, LAD occlusion was maintained without reperfusion. All dogs received aspirin and heparin. A systemic lytic state was present in staphylokinase-treated dogs. Planimetry of LV slices showed larger infarcts (percent of area at risk) and more hemorrhage (percent of IA) after 240 minutes of occlusion than after 90 minutes of occlusion (54+/-17% versus 37+/-18% and 52+/-27% versus 29+/-27%, respectively; P<.01 for both comparisons), with no significant difference among treatments. Hemorrhage was not observed in the control group without reperfusion. LV angiography showed no differences in global and regional LV function between mechanical and pharmacological reperfusion. CONCLUSIONS:In this experimental model, hemorrhagic infarctions of similar extent were observed after both pharmacological and mechanical reperfusion. The extent of hemorrhage was increased by the delay in reperfusion but not by the presence of a lytic state.
journal_name
Circulationjournal_title
Circulationauthors
Pislaru SV,Barrios L,Stassen T,Jun L,Pislaru C,Van de Werf Fdoi
10.1161/01.cir.96.2.659subject
Has Abstractpub_date
1997-07-15 00:00:00pages
659-66issue
2eissn
0009-7322issn
1524-4539journal_volume
96pub_type
杂志文章相关文献
CIRCULATION文献大全abstract:BACKGROUND:Normal mammalian mitral leaflets have regional heterogeneity of biochemical composition, collagen fiber orientation, and geometric deformation. How leaflet shape and regional geometry are affected in dilated cardiomyopathy is unknown. METHODS AND RESULTS:Nine sheep had 8 radio-opaque markers affixed to the ...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/CIRCULATIONAHA.105.000554
更新日期:2006-07-04 00:00:00
abstract:BACKGROUND:Older coronary patients are at high risk of cardiac disability. Exercise conditioning programs have been demonstrated to improve functional capacity, particularly in younger coronary patients. In this study, the effects of aerobic conditioning on submaximal and maximal indicators of exercise performance were...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.88.2.572
更新日期:1993-08-01 00:00:00
abstract:BACKGROUND:Inhomogeneity of dose distribution and anatomic aspects of the atherosclerotic plaque may influence the outcome of irradiated lesions after balloon angioplasty (BA). We evaluated the influence of delivered dose and morphological characteristics of coronary stenoses treated with beta-radiation after BA. METH...
journal_title:Circulation
pub_type: 临床试验,杂志文章
doi:10.1161/01.cir.101.21.2472
更新日期:2000-05-30 00:00:00
abstract::Values for several coronary risk factors, including systolic and diastolic blood pressure, serum cholesterol, triglycerides, blood glucose, uric acid, hemoglobin, weight, vitral capacity and cigarette smoking have been found to be similar among spouses in the Framingham Study. However, longitudinal analyses show that...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.52.4.589
更新日期:1975-10-01 00:00:00
abstract:BACKGROUND:We identified a gene (PRKAG2) that encodes the gamma-2 regulatory subunit of AMP-activated protein kinase (AMPK) with a mutation (Arg302Gln) responsible for familial Wolff-Parkinson-White (WPW) syndrome. The human phenotype consists of ventricular preexcitation, conduction abnormalities, and cardiac hypertro...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.CIR.0000151291.32974.D5
更新日期:2005-01-04 00:00:00
abstract:BACKGROUND:This study was designed to define myocardial viability and establish practical cut-off values for differentiating normal myocardial tissue from subendocardial and transmural scar tissue by using electromechanical mapping (EMM). We validated our results by delayed-enhancement cardiac MRI (DE-MRI). METHODS AN...
journal_title:Circulation
pub_type: 临床试验,杂志文章
doi:10.1161/01.cir.0000026394.01888.18
更新日期:2002-08-20 00:00:00
abstract:BACKGROUND:The arrhythmia burden in tetralogy of Fallot, types of arrhythmias encountered, and risk profile may change as the population ages. METHODS AND RESULTS:The Alliance for Adult Research in Congenital Cardiology (AARCC) conducted a multicenter cross-sectional study to quantify the arrhythmia burden in tetralog...
journal_title:Circulation
pub_type: 杂志文章,多中心研究
doi:10.1161/CIRCULATIONAHA.109.928481
更新日期:2010-08-31 00:00:00
abstract::A low level of high-density lipoprotein cholesterol (HDL-C) is an important risk factor for cardiovascular disease. Epidemiological and clinical studies provide evidence that HDL-C levels are linked to rates of coronary events. The cardioprotective effects of HDL-C have been attributed to its role in reverse cholester...
journal_title:Circulation
pub_type: 杂志文章,评审
doi:10.1161/01.CIR.0000131512.50667.46
更新日期:2004-06-15 00:00:00
abstract:BACKGROUND:Impaired endothelium-dependent vasodilation is an early sign of atherosclerosis in hypercholesterolemic patients. We hypothesized that lipid-lowering therapy can improve endothelial function and that this effect is mainly mediated by increased bioavailability of nitric oxide (NO). METHODS AND RESULTS:In a r...
journal_title:Circulation
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1161/01.cir.98.3.211
更新日期:1998-07-21 00:00:00
abstract:BACKGROUND:The pulmonary autograft procedure (Ross) is now considered the gold standard for aortic valve replacement. One of its advantages is the freedom from macroemboli without anticoagulation. Whether this holds true for circulating microemboli, detectable as high-intensity transient Doppler signals (HITS), has not...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.96.6.1843
更新日期:1997-09-16 00:00:00
abstract:BACKGROUND:The purpose of this study was to describe a new technique for catheter ablation of left lateral accessory pathways (APs) by radiofrequency energy applied at the epicardium through the coronary sinus wall using a unipolar configuration. METHODS AND RESULTS:In an overall group of 212 patients with left latera...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.86.5.1464
更新日期:1992-11-01 00:00:00
abstract:BACKGROUND:Cardiac parasympathetic nerves run alongside the superior vena cava (SVC) and accumulate particularly epicardially adjacent to the orifice of the coronary sinus (CS). In animals, these nerves can be electrically stimulated inside the SVC or CS, which results in negative chronotropic/dromotropic effects and n...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/hc4501.099307
更新日期:2001-11-13 00:00:00
abstract::As the appreciation of structural heart disease in children and adults has increased and as catheter-based closure procedures are now being performed in clinical practice, cardiovascular physicians have multiple compelling new reasons to better understand cardiac anatomic and spatial relationships. Current 2-dimension...
journal_title:Circulation
pub_type: 杂志文章,评审
doi:10.1161/CIRCULATIONAHA.107.740977
更新日期:2008-05-06 00:00:00
abstract:BACKGROUND:Radiofrequency ablation of the atrioventricular node and permanent pacing are used for symptomatic relief in patients with medically refractory atrial fibrillation. In this study, meta-analysis was used to clarify clinical outcomes and survival after ablation and pacing therapy using data from the published ...
journal_title:Circulation
pub_type: 杂志文章,meta分析
doi:10.1161/01.cir.101.10.1138
更新日期:2000-03-14 00:00:00
abstract:BACKGROUND:Cardiac growth and function may be modulated in part by trophic effects of neurohormones. Specifically, aldosterone has been shown to stimulate the growth of cardiac myocytes and the accumulation of cardiac extracellular matrix proteins. Moreover, a variant of the aldosterone synthase gene (a cytosine/thymid...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.99.17.2255
更新日期:1999-05-04 00:00:00
abstract:BACKGROUND AND PURPOSE:The guidelines presented in this consensus statement are intended to serve researchers, clinicians, reviewers, and regulators in the selection of the most appropriate primary outcome for a clinical trial of cardiac arrest therapies. The American Heart Association guidelines for the treatment of c...
journal_title:Circulation
pub_type: 杂志文章,实务指引
doi:10.1161/CIR.0b013e3182340239
更新日期:2011-11-08 00:00:00
abstract:BACKGROUND:Long-term ventricular resynchronization therapy improves symptom status. Changes in left ventricular remodeling have not been adequately evaluated. METHODS AND RESULTS:Fifty-three patients with systolic heart failure and bundle-branch block underwent implantation of biventricular stimulation (BVS) devices a...
journal_title:Circulation
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1161/hc1102.105730
更新日期:2002-03-19 00:00:00
abstract::Systemic, renal and splanchnic hemodynamics, intravascular volume, circulating catecholamine levels and plasma renin activity were compared in 39 patients with borderline hypertension and 28 normotensive subjects, who were less than 5% (n = 42, lean patients) or more than 40% overweight (n = 25, obese patients). Lean ...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.66.1.55
更新日期:1982-07-01 00:00:00
abstract:BACKGROUND:Repolarization dispersion (Rd) is frequently mentioned as a predictor of cardiac abnormalities. We present a new measure of Rd based on the root-mean-square (RMS) curve of an ECG lead set and compare its performance with that of the commonly used QT dispersion (QTd) measure with the use of recovery times mea...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.102.6.685
更新日期:2000-08-08 00:00:00
abstract:BACKGROUND:Concern that trans-fatty acids formed in the partial hydrogenation of vegetable oils may increase the risk of coronary disease has existed for several decades, but direct evidence on this relation in humans is limited. METHODS AND RESULTS:With a case-control design, we studied the association between intake...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.89.1.94
更新日期:1994-01-01 00:00:00
abstract::BACKGROUND. The fenestrated Fontan operation has been applied to high-risk patients with univentricular hearts, resulting in improved survival. The purpose of this study was to determine the hemodynamic factors responsible for these improved results. METHODS AND RESULTS. We performed the fenestrated Fontan operation i...
journal_title:Circulation
pub_type: 杂志文章
doi:
更新日期:1992-11-01 00:00:00
abstract:BACKGROUND:Alterations in myocardial function and systemic vascular tone are well documented in congestive heart failure (CHF), but little information is available on the effects of CHF on pulmonary vessels. We examined the mechanisms of tone regulation of canine pulmonary arteries during pacing-induced CHF. METHODS A...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.87.5.1722
更新日期:1993-05-01 00:00:00
abstract:BACKGROUND:Sirt7, 1 of the 7 members of the mammalian sirtuin family, promotes oncogenic transformation. Tumor growth and metastasis require fibrotic and angiogenic responses. Here, we investigated the role of Sirt7 in cardiovascular tissue repair process. METHODS AND RESULTS:In wild-type mice, Sirt7 expression increa...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/CIRCULATIONAHA.114.014821
更新日期:2015-09-22 00:00:00
abstract:BACKGROUND:Several noninvasive methods are available to investigate the severity of extracoronary atherosclerotic disease. No population-based study has yet examined whether differences exist between these measures with regard to their predictive value for myocardial infarction (MI) or whether a given measure of athero...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.CIR.0000120708.59903.1B
更新日期:2004-03-09 00:00:00
abstract::To obtain insight into the mechanism(s) responsible for the direct visualization of acute myocardial infarcts by myocardial scintigraphy with technetium-99m stannous pyrophosphate (99mTc-PYP), scintigraphic and morphologic studies were performed in 22 dogs subjected to occlusion of the proximal left anterior descendin...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.52.4.596
更新日期:1975-10-01 00:00:00
abstract:BACKGROUND:Cell-mediated autoimmunity has been strongly implicated in the pathogenesis of viral myocarditis. METHODS AND RESULTS:Using a murine model of acute myocarditis caused by coxsackievirus B3, we analyzed the phenotypes and morphology of the infiltrating cells in the hearts by immunofluorescence and electron mi...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/01.cir.84.2.788
更新日期:1991-08-01 00:00:00
abstract:BACKGROUND:The long-term success of coronary bypass surgery is dependent on graft patency after surgery. This trial was designed to determine if aspirin improved saphenous vein graft or internal mammary artery (IMA) graft patency between 1 and 3 years after coronary artery bypass grafting (CABG). METHODS AND RESULTS:A...
journal_title:Circulation
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1161/01.cir.89.3.1138
更新日期:1994-03-01 00:00:00
abstract::With the advent of reliable prosthetic valves, the number of aortic valvuloplastic procedures performed in adults has decreased significantly. This is in contradistinction to patients with congenital aortic stenosis, in whom aortic valvuloplasty remains the primary approach. Although only a 25% to 50% incidence of lon...
journal_title:Circulation
pub_type: 杂志文章
doi:
更新日期:1986-09-01 00:00:00
abstract:BACKGROUND:Beta-blockers improve clinical outcome when administered early after acute myocardial infarction. However, whether beta-blockers actually reduce the myocardial infarction size is still in dispute. Cardiac magnetic resonance imaging can accurately depict the left ventricular (LV) ischemic myocardium at risk (...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/CIRCULATIONAHA.106.679639
更新日期:2007-06-12 00:00:00
abstract:BACKGROUND:Patients with prior atherosclerosis in 1 or more vascular territories (coronary, cerebrovascular, or peripheral arterial) who present with acute coronary syndromes have high cardiovascular risk and may benefit significantly from evidence-based therapies, yet whether these are used consistently is unknown. M...
journal_title:Circulation
pub_type: 杂志文章
doi:10.1161/CIRCULATIONAHA.109.877092
更新日期:2009-08-18 00:00:00