Abstract:
PURPOSE:To evaluate the electrophysiological effects of intravenous propafenone in the anterograde and retrograde effective refractory period of the accessory pathways (AP), in patients with Wolff-Parkinson-White syndrome. METHODS:Forty symptomatic patients were studied. All patients were undergone to electrophysiologic study at baseline and after IV propafenone (2.0mg/kg). Drug effects were analysed according to the basal state of the anterograde and retrograde effective refractory periods of the AP > < 270ms. RESULTS:The mean anterograde and retrograde effective refractory periods of the AP were 275 +/- 76ms and 264 +/- 44ms at the control and 462 +/- 190ms and 438 +/- 184ms after drug respectively (p < 0.01 in both situations). The mean anterograde effective refractory period of the AV node was 236 +/- 40ms (control) and 276 +/- 57ms (post-drug)- p < 0.05. The mean atrial and right ventricular effective refractory period in the control were 210 +/- 23ms and 240 +/- 34ms passing to 215 +/- 24ms and 250 +/- 40 ms after drug respectively (p = ns). After drug, complete anterograde and retrograde block of the AP, occurred in 15 (42%) and 12 (35%) patients respectively. Out of 15 patients with complete anterograde block of the AP, 11 had anterograde effective refractory period of the AP > 270ms and 4, < 270ms (p < 0.02). Out of 12 patients with complete retrograde block of the AP after drug, 4 had retrograde effective refractory period > 270ms and 8, < 270ms (p: ns). CONCLUSION:Propafenone caused significant increase in the anterograde and retrograde effective refractory periods of the AP. There was a tendency of the drug to show better effectiveness in patients with anterograde effective refractory period of the AP > 270ms. This results were not seen in relation to the retrograde effective refractory period of the AP.
journal_name
Arq Bras Cardioljournal_title
Arquivos brasileiros de cardiologiaauthors
Maia IG,Cruz Filho F,Fagundes ML,Loyola LH,Pimenta J,Lorga AMsubject
Has Abstractpub_date
1993-07-01 00:00:00pages
23-6issue
1eissn
0066-782Xissn
1678-4170journal_volume
61pub_type
临床试验,杂志文章abstract:BACKGROUND:Atrial fibrillation (AF) is the most common arrhythmia in adults, and is encountered in 10-15% of the patients with hyperthyroidism. Unless euthyroidism is restored, pharmacological or electrical cardioversion is controversial in patients with AF who remain hyperthyroid. OBJECTIVE:The aim of this study was ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20160013
更新日期:2016-02-01 00:00:00
abstract:BACKGROUND:Institutional documents recommend that hemodynamic variables--heart rate (HR) and systolic (SAP) and diastolic arterial pressure (DAP)--be routinely controlled at the aerobic part of supervised exercise sessions for coronary disease patients. OBJECTIVE:a) to determine the pattern and reproducibility of the ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2009000700009
更新日期:2009-07-01 00:00:00
abstract:PURPOSE:To analyse the performance of the artificial cardiac stimulation with the VVIR pacemaker whose sensor is adjusted by the variations of the autonomic nervous system in Chagas disease patients with deficiency of the conduction system. METHODS:Forty-seven Chagas disease patients have been studied, 28 male between...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 临床试验,杂志文章
doi:10.1590/s0066-782x1998001200004
更新日期:1998-12-01 00:00:00
abstract:OBJECTIVE:To present a technical proposal based on the experience of 130 implantations using a simplified technique for coronary sinus catheterization, based on the atrial component of the intracavitary electrogram and radiological anatomy. METHODS:From October, 2001 to October, 2004, 130 biventricular pacemaker impla...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2006000400005
更新日期:2006-04-01 00:00:00
abstract:OBJECTIVE:To assess the benefit resulting from the use of abciximab associated with primary angioplasty. The following parameters were analyzed in-hospital, at 30 days, and 6 months: (a) flow in the culprit artery; (b) ventricular function; (c) combined outcome of death, acute myocardial infarction, and additional reva...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2002000100008
更新日期:2002-01-01 00:00:00
abstract:OBJECTIVE:To assess the relation between the evolution of cognitive performance and the prognosis of elderly patients after compensation of advanced heart failure. METHODS:Thirty-one patients older than 64 (68 +/- 7) years and admitted with New York Heart Association class IV heart failure and ejection fraction = 0.45...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2004000300005
更新日期:2004-03-01 00:00:00
abstract::A healthy 44 year-old male patient presented a calcified mass in the middle mediastinum on a chest film. During diagnostic investigation cineangiograms showed a rupture of the left sinus of Valsalva forming a large pseudoaneurysm that produced important distortion of the left coronary artery and it's main branches. Th...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1990-10-01 00:00:00
abstract:PURPOSE:To analyse the actual contribution of digital angiography in the angioplasty setting and to assess its utility to optimize angioplasty results. METHODS:One hundred patients with single vessel coronary artery disease, without previous angioplasty or coronary artery bypass graft surgery, who underwent angioplast...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1992-10-01 00:00:00
abstract:OBJECTIVES:To evaluate the effectiveness of acute ischemic preconditioning (IP), based on somatosensory evoked potentials (SSEP) monitoring, as a method of spinal cord protection and to asses SSEP importance in spinal cord neuromonitoring. METHODS:Twenty-eight dogs were submitted to spinal cord ischemic injury attaine...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2007000300007
更新日期:2007-03-01 00:00:00
abstract::[This corrects the article doi: 10.5935/abc.20120401]. ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20190091
更新日期:2019-06-06 00:00:00
abstract:OBJECTIVE:To evaluate the characteristics of the patients receiving medical care in the Ambulatory of Hypertension of the Emergency Department, Division of Cardiology, and in the Emergency Unit of the Clinical Hospital of the Ribeirão Preto Medical School. METHODS:Using a protocol, we compared the care of the same hyp...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,多中心研究
doi:10.1590/s0066-782x2002000200003
更新日期:2002-02-01 00:00:00
abstract:BACKGROUND:The advancement of noninvasive imaging methods has resulted in the increase in diagnosis of heart neoplasms. However, the literature has few studies involving primary cardiac neoplasms in children. OBJECTIVE:To retrospectively review cases of primary heart neoplasms in children, considering the initial clin...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20130024
更新日期:2013-02-01 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:PURPOSE:To analyze, by cross-sectional echocardiography, morphological features of the atrial atrioventricular and ventricular septum potentially involved in the genesis of fixed subaortic stenosis. METHODS:Forty three children with fixed subaortic stenosis were compared with 86 normal children, matched by age, sex an...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1996-10-01 00:00:00
abstract:OBJECTIVE:To assess the relation between P-wave and QT dispersions in elderly patients with heart failure. METHODS:Forty-seven elderly patients (75.6+/-6 years) with stable heart failure in NYHA functional classes II or III and with ejection fractions of 37+/-6% underwent body surface mapping to analyze P-wave and QT ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2002001400007
更新日期:2002-11-01 00:00:00
abstract:BACKGROUND:Percutaneous intervention in patients with bioprosthetic mitral valve dysfunction is an alternative to conventional surgical treatment. OBJECTIVES:To report the first Brazilian experience with transseptal transcatheter bioprosthetic mitral valve-in-valve implantation (transseptal-TMVIV). METHODS:Patients w...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,多中心研究
doi:10.36660/abc.20190252
更新日期:2020-09-01 00:00:00
abstract:OBJECTIVES:The inhibition of the rennin-angiotensin-aldosterone system (RAAS) and sympathetic autonomous nervous system has increased the perspective of survival in these patients, as well as allowing the improvement of the quality of life. The aim of this study was to evaluate the reality of the treatment employed and...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2007000400018
更新日期:2007-04-01 00:00:00
abstract::The risk scores used as assistance agents in valve diseases are validated worldwide; however, the data are not homogeneous. The epidemiological characteristics of each population require local validation of these risk tools. The percutaneous valve replacement, which is a reality in valvular diseases (especially aortic...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2012000500018
更新日期:2012-05-01 00:00:00
abstract:BACKGROUND:Patients with end-stage kidney disease (ESKD) experience elevated cardiac stress because of the repetitive and intermittent character of dialysis. Changes in ventricular electrical systole induced by necessary dialysis significantly contribute to predict sudden death due to arrhythmia in ESKD. OBJECTIVE:The...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20130063
更新日期:2013-03-01 00:00:00
abstract:Background::The endothelium is a monolayer of cells that extends on the vascular inner surface, responsible for the modulation of vascular tone. By means of the release of nitric oxide (NO), the endothelium has an important protective function against cardiovascular diseases. Objective::Verify if cis- [Ru(bpy)2(NO2)(N...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20170090
更新日期:2017-06-29 00:00:00
abstract:PURPOSE:To study the autonomic behavior of the escape rhythm in congenital complete heart block (CCHB), using heart rate variability (HRV). METHODS:A group of 10 asymptomatic patients with CCHB and narrow QRS was studied, 7 females; mean age = 14 +/- 9 years. The following time domain indexes were analyzed from a 24 h...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1994-06-01 00:00:00
abstract:BACKGROUND:Non-invasive cardiological methods have been used for the identification of myocardial damage in Chagas disease. OBJECTIVE:To verify whether the rest/stress myocardial perfusion scintigraphy is able to identify early myocardial damage in the indeterminate form of Chagas disease. METHODS:Eighteen patients w...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2010005000064
更新日期:2010-07-01 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::Total generalized lipodystrophy (Berardinelli - Seip Syndrome) is a rare hereditary disease characterized by insulin-resistant diabetes mellitus and a small quantity of adipose tissue and is of unknown origin. Common cardiovascular alterations related to this syndrome are cardiac hypertrophy and arterial hypertension....
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,评审
doi:10.1590/s0066-782x2000000900006
更新日期:2000-09-01 00:00:00
abstract::We present a case of a 19-year old female with systemic pulmonary artery (PA) pressure due to a congenital ventricular septal defect (VSD) and atrial septal defect (ASD). She was pink at rest and cyanotic on exercise. Lung biopsy revealed grade IV pulmonary vascular changes. As a preliminary step PA was banded to incr...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1997-04-01 00:00:00
abstract:OBJECTIVE:To determine the diagnostic accuracy of echocardiography for indicating surgery without catheterization in patients with congenital heart disease through a prospective analysis and comparison of the echocardiographic diagnosis with the intraoperative findings, or invasive study, or both. METHODS:From Februar...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2005000500006
更新日期:2005-05-01 00:00:00
abstract::Beginning with a patient presenting with an atrial septal defect (ASD) of the secundum type, the genealogy was identified in four affected individuals who belonged to three successive generations of the same family. The defects were visually confirmed in all individuals and were found to be anatomically similar. No ot...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x1999000800009
更新日期:1999-08-01 00:00:00
abstract:OBJECTIVE:To evaluate the use of resistive exercise in the study of endothelial dysfunction in heart failure (HF) comparatively to reactive hyperemia (RH). METHODS:Eighteen patients with heart failure and 15 normal volunteers were submitted to intermittent handgrip exercise in a pneumatic bag, at an intensity that cor...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2006000600008
更新日期:2006-06-01 00:00:00
abstract::Two cases of this anomaly, in women (26 and 49 years old), with symptoms of short duration (4 and 3 months) of dysphagia, regurgitation and esophagitis, without loss of weight, are presented. In both, the final diagnosis was made by mean of thoracic aortogram. Esophagoscopy realized only in the first patient, demonstr...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1991-01-01 00:00:00
abstract:OBJECTIVE:Based on the analysis of indicators which express the rationale of the actions of the program, we developed a cross-sectional study to assess the performance of a Family Healthcare Team as regards the care provided to individuals with arterial hypertension living in a small municipality. METHODS:The study ca...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2006001700015
更新日期:2006-10-01 00:00:00