Abstract:
PURPOSE:To study the spatial arrangement of the bundles of myocardial fibers presents in the left atrial-venous junctions and in the wall of the pulmonary veins. METHODS:The study was made on 24 human adult hearts, together with pulmonary vessels, fixed in 10% formaldehyde solution. Each specimen was cleared of remnants of pericardium to expose the myocardial fibers as clearly as possible. Particular attention was paid to the atrial-venous junction and the extension of the myocardial fibers in the pulmonary veins. The specimens were embedded in celloidin and cut serially at a thickness of 70 mu and stained by methods of Azan's trichrome. RESULTS:The myocardial bundles leave the atrial wall around the openings of all pulmonary veins forming a sphincter-like structure. These fibers are continuous in the adventitial coat running in oblique or spiral directions. Some bundles, more external, leaving from the atrial wall, surround the ostium of the veins and return to the atrium, forming true loops. CONCLUSION:The extremities of the pulmonary veins and their junctions with the atrium have a morphological substract which may be of physiological importance in the control of the pulmonary venous pressure and blood flow.
journal_name
Arq Bras Cardioljournal_title
Arquivos brasileiros de cardiologiaauthors
Cavalcanti JS,Biazzoto W,Tavares DS,de Queiroz AC,Silva CM,de Lavor SM,de Oliveira LMsubject
Has Abstractpub_date
1994-04-01 00:00:00pages
239-41issue
4eissn
0066-782Xissn
1678-4170journal_volume
62pub_type
杂志文章abstract:Background:Little has been studied on heart rate and its relationship with metabolic disorders. Objective:To identify possible association between heart rate (HR) and metabolic disorders in children and adolescents. Methods:This cross-sectional study evaluated 2.098 subjects, aged between 7 and 17 years. The variable...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20170103
更新日期:2017-09-01 00:00:00
abstract:BACKGROUND:Although thrombolysis and primary CTA are well-established procedures, they are not administered in a large proportion of the patients with STEMI who arrive to the emergency rooms. OBJECTIVE:Describe initial and final the results in a cohort of STEMI patients METHODS:The study included, from hospital admis...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2009000600009
更新日期:2009-06-01 00:00:00
abstract:BACKGROUND:The Transposition of the Great Arteries is the most frequent congenital cyanogenic cardiopathy in the neonatal period, corresponding to 7% of all congenital cardiopathies. Among the operations for surgical treatment, the Jatene operation, with arterial correction, is the treatment of choice. During the late ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,多中心研究
doi:10.1590/s0066-782x2008001300003
更新日期:2008-07-01 00:00:00
abstract:BACKGROUND:Evidences suggest that paraoxonase 1 (PON1) confers important antioxidant and anti-inflammatory properties when associated with high-density lipoprotein (HDL). OBJECTIVE:To investigate the relationships between p.Q192R SNP of PON1, biochemical parameters and carotid atherosclerosis in an asymptomatic, normo...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20150053
更新日期:2015-07-01 00:00:00
abstract:BACKGROUND:Intestinal ischemia-reperfusion is a frequent clinical event associated to injury in distant organs, especially the heart. OBJECTIVE:To investigate the gene expression of oxidative stress and antioxidant defense in the heart of inbred mice subjected to intestinal ischemia and reperfusion (IR). METHODS:Twel...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20130240
更新日期:2014-02-01 00:00:00
abstract:OBJECTIVES:To compare the morbidity and mortality of patients with and without metabolic syndrome (MS) (according to the First Brazilian Guidelines for Diagnosis and Treatment of MS) undergoing coronary artery bypass graft (CABG) during hospitalization and after 30 days. METHODS:A total of 107 patients who underwent C...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2007000400008
更新日期:2007-04-01 00:00:00
abstract::A 78-year-old patient presented with shortness of breath after falling down. Transthoracic echocardiogram showed an extensive thrombus in the right atrium (RA), extensive thrombosis of the inferior vena cava (IVC), and abdominal aortic aneurysm (AAA). A magnetic resonance confirmed the thrombosis of the RA extending t...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20160143
更新日期:2016-10-01 00:00:00
abstract:BACKGROUND:Echocardiography is a useful method for screening and assessing response to cardiac resynchronization therapy (CRT). 3D echocardiography has already established its role in the evaluation of ventricular volumes and ejection fraction (LVEF) with excellent correlation of results when compared with MRI. OBJECT...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2011005000073
更新日期:2011-08-01 00:00:00
abstract:BACKGROUND:Chronic heart failure (CHF) is a complex syndrome which comprises structural and functional alterations in the heart in maintaining the adequate blood demand to all tissues. Few investigations sought to evaluate oxidative DNA damage in CHF. OBJECTIVE:To quantify the DNA damage using the comet assay in left ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.36660/abc.20180198
更新日期:2020-02-01 00:00:00
abstract:BACKGROUND:In patients with systemic hypertension, microalbuminuria is a marker of endothelial damage and is associated with an increased risk for cardiovascular disease. OBJECTIVE:To determine the factors that may lead to the occurrence of microalbuminuria in hypertensive patients with serum creatinine lower than 1.5...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20130210
更新日期:2014-01-01 00:00:00
abstract:BACKGROUND:The classification or index of heart failure severity in patients with acute myocardial infarction (AMI) was proposed by Killip and Kimball aiming at assessing the risk of in-hospital death and the potential benefit of specific management of care provided in Coronary Care Units (CCU) during the decade of 60....
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20140091
更新日期:2014-08-01 00:00:00
abstract:BACKGROUND:Behavioral scientists consistently point out that knowledge does not influence decisions as expected. GRACE Score is a well validated risk model for predicting death of patients with acute coronary syndromes (ACS). However, whether prognostic assessment by this Score modulates medical decision is not known. ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20190046
更新日期:2019-06-01 00:00:00
abstract:OBJECTIVE:To assess the in-hospital results and clinical follow-up of young patients (< 50 years) with multivessel coronary artery disease undergoing stent implantation in native coronary arteries and to compare their results with those of patients with single-vessel coronary artery disease. METHODS:We retrospectively...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2003001300006
更新日期:2003-11-01 00:00:00
abstract:BACKGROUND:The new European Society of Cardiology guidelines for hypertrophic cardiomyopathy (HCM) define the estimation of sudden cardiac death (SCD) risk as an integral part of clinical management. An implantable cardioverter defibrillator (ICD) is recommended (class IIa) when the risk is ≥ 6%. OBJECTIVES:To compare...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20180099
更新日期:2018-06-01 00:00:00
abstract:OBJECTIVE:To compare the management of patients with ischemic heart disease being followed up in a general cardiology outpatient clinic with that of patients being followed up in an outpatient clinic specific for ischemic heart disease, emphasizing the lipid profile and the pharmacological treatment prescribed. METHOD...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2004001500005
更新日期:2004-09-01 00:00:00
abstract:BACKGROUND:The occurrence of atrial fibrillation (AF) after successful ablation of cavotricuspid isthmus-dependent atrial flutter (CTI-AFL) is an important medical event, but predictors of this event are still controversial. OBJECTIVE:To determine the incidence of AF and its predictors in patients undergoing ablation ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2009001100008
更新日期:2009-11-01 00:00:00
abstract:BACKGROUND:Inappropriate lifestyles have been responsible for the leading causes of mortality. The purpose of the Fantastic Lifestyle Questionnaire is to help physicians involved in health prevention to identify and assess their patients' lifestyles. OBJECTIVE:To translate and validate the Fantastic Lifestyle Question...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2008001400006
更新日期:2008-08-01 00:00:00
abstract::This report describes a case of a 62 year-old man admitted for recurrent myocardial infarction and normal coronary arteries, caused by coronary embolism from aortic papillary fibroelastoma. Other conditions causing acute coronary syndrome and normal coronary arteries are discussed. A careful evaluation by transthoraci...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2012000100018
更新日期:2012-01-01 00:00:00
abstract:BACKGROUND:Heart failure is a severe complication associated with doxorubicin (DOX) use. Strain, assessed by two-dimensional speckle tracking (2D-STE), has been shown to be useful in identifying subclinical ventricular dysfunction. OBJECTIVES:a) To investigate the role of strain in the identification of subclinical ve...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20140209
更新日期:2015-04-01 00:00:00
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journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2012005000112
更新日期:2013-01-01 00:00:00
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journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1995-06-01 00:00:00
abstract::The study of myocardial contractility, based on the new anatomical concepts that govern cardiac mechanics, represents a promising strategy of analysis of myocardial adaptations related to physical training in the context of post-infarction. We investigated the influence of aerobic training on physical capacity and on ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20180049
更新日期:2018-04-01 00:00:00
abstract::Drug intoxication with disulfiram is a rare condition that may lead to severe and potentially fatal cardiovascular manifestations such as cardiogenic shock. We report the case of a female patient with refractory shock after deliberate self-poisoning with disulfiram. Clinical, biochemical and echocardiographic assessme...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2009000300016
更新日期:2009-03-01 00:00:00
abstract:BACKGROUND:In hypertrophic cardiomyopathy (HCM), interstitial myocardial fibrosis is an important histological modification that has been associated with sudden death and evolution toward myocardial dilation. OBJECTIVE:To prospectively evaluate the prognostic value of the collagen volume fraction in HCM. METHODS:An e...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2009000300010
更新日期:2009-03-01 00:00:00
abstract:BACKGROUND:According to the World Health Organization, coronary atherosclerosis is the leading cause of death worldwide. The INTERHEART study demonstrated that dyslipidemia is one of the most important independent risk factors for AMI. OBJECTIVE:To evaluate the lipid profile and blood pressure of school children atten...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,多中心研究
doi:10.1590/s0066-782x2007001400001
更新日期:2007-08-01 00:00:00
abstract::We report a case of chronic nonspecific constrictive pericarditis with myocardial involvement in a 19-month-old infant. The patient underwent total pericardiectomy and had irreversible hemodynamic instability. Constrictive pericarditis is rare in childhood. It may follow several processes, most frequently an infectiou...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:2000-01-01 00:00:00
abstract:BACKGROUND:Transvenous lead extraction (TLE) of cardiac implantable electronic devices (CIED) is an uncommon procedure and requires specialized personnel and adequate facilities. OBJECTIVES:To evaluate the effectiveness and safety of the removal of CIED leads and to determine risk factors for surgical complications an...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.36660/abc.20200476
更新日期:2020-12-01 00:00:00
abstract::The authors report a case of a 65-year-old male patient who, after complaint about retrosternal discomfort and going through a thoracic radiography with mediastinal enlargement, was submitted to magnetic resonance angiography, which detected a right aortic arch with aberrant left subclavian artery and Kommerell divert...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,评审
doi:10.1590/s0066-782x2009001200026
更新日期:2009-12-01 00:00:00
abstract::Blood pressure (BP)-lowering therapy improves left ventricular (LV) parameters of hypertensive target-organ damage in stage II hypertension, but whether there is a drug-class difference in echocardiographic parameters in stage I hypertension patients is less often studied. In the PREVER treatment study, where individu...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.5935/abc.20180249
更新日期:2019-01-01 00:00:00
abstract:OBJECTIVE:To test the hypothesis that short periods of ischemia may increase the myocardial protection obtained with intermittent crossclamping of the aorta. METHODS:In the control group (18 patients), surgery was performed with systemic hypothermia at 32 degrees C and intermittent crossclamping of the aorta. Extracor...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1590/s0066-782x2001001000001
更新日期:2001-10-01 00:00:00