Abstract:
PURPOSE:To evaluate the results with the use of an automatic antitachycardia pacemaker in patients with refractory paroxysmal supraventricular tachycardia. PATIENTS AND METHODS:Nine patients aged 32 to 63 years with symptoms from 2 to more than 40 years and prophylactic treatment with several antiarrhythmic drugs that had failed to control tachycardia. The frequency of attacks in the year before the implant was from 1 per month to 3 daily and 4 of patients required direct counter current cardioversion at least once. The electrophysiologic studies demonstrated atrioventricular (AV) nodal reentry in 6 and AV reentry utilizing an accessory AV connection in 4 patients (in one patient both mechanisms were present). The patients have been followed from 2 to 18 months. RESULTS:All patients experienced new episodes of the arrhythmia that were successfully terminated by the pacemaker. Two patients presented episodes of tachycardia not terminated by the pacemaker. These events were successfully treated by reprogramming the unit. The drug treatment was discontinued in 7 patients. CONCLUSION:The antitachycardia pacemaker proved to be an effective therapeutic tool in reentrant supraventricular tachycardia refractory to pharmacologic therapy.
journal_name
Arq Bras Cardioljournal_title
Arquivos brasileiros de cardiologiaauthors
Sant'Anna JR,Medeiros C,Halperin C,Lucchese F,Kalil R,Prates P,Nonohay N,Nesralla Isubject
Has Abstractpub_date
1991-04-01 00:00:00pages
275-9issue
4eissn
0066-782Xissn
1678-4170journal_volume
56pub_type
杂志文章abstract::In order to evaluate major Doppler-Echocardiographic parameters for the diagnosis of acute cardiac allograft rejection episodes a serial of 54 Doppler Echocardiograms were performed simultaneously with endomyocardial biopsy in five patients (mean age = 40.2 y/o). Measurements included: right and left chambers diameter...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1989-09-01 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::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::Cardiovascular diseases (CVD) are a major cause of death in developed countries as well as in developing countries. In general, the clinical manifestations of CVD, such as myocardial infarction, stroke and peripheral vascular disease, are caused by an atherosclerotic process with onset as from the middle age. However,...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,评审
doi:10.1590/s0066-782x2008000400012
更新日期:2008-04-01 00:00:00
abstract:Background::Currently, there is no validated multivariate model to predict probability of obstructive coronary disease in patients with acute chest pain. Objective::To develop and validate a multivariate model to predict coronary artery disease (CAD) based on variables assessed at admission to the coronary care unit (...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20170037
更新日期:2017-04-01 00:00:00
abstract:OBJECTIVE:To verify the hypothesis that the pulmonary vein pulsatility index is higher in fetuses of diabetic mothers than it is in normal fetuses of nondiabetic mothers. METHODS:Twenty-four fetuses of mothers with either gestational or previous diabetes (cases), and 25 normal fetuses of mothers without systemic disea...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2003001400007
更新日期:2003-12-01 00:00:00
abstract:PURPOSE:To study the effect of omega-3 fatty acid on endothelium-dependent relaxation, total plasma cholesterol, LDL-cholesterol, HDL-cholesterol and triglycerides levels as well as, the malondialdehyde (MDA) content of the LDL particles and arterial wall. METHODS:Fourteen male rabbits were randomly assigned to hyperc...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1997-07-01 00:00:00
abstract:PURPOSE:To evaluate the presence of risk factors (RF) for coronary disease in a group of university students (US). METHODS:We studied 123 US, 88 (71.55%) females, mean age 21 +/- 3.52 years, submitted to questionary, interview, physical examination and serum analises. Eighty six women informed about oral contraceptive...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1995-12-01 00:00:00
abstract::Percutaneous mitral and tricuspid balloon valvuloplasty was realized in the same procedure using a double lumen exchange catheter that could accommodate two guide wires and two balloons (19 mm and Trefoil 3 c 10 mm--Schneider) with simultaneous insufflation. Hemodynamically successful was accomplished as evidenced by ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1989-12-01 00:00:00
abstract::Three infants with anomalous origin of left coronary artery, being two from the right pulmonary artery and one from the left, without other congenital defects, ages of 5, 15 and 3 months old, presented with early congestive heart failure due to anterolateral myocardial infarction. Anatomical characteristic was peculia...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1991-08-01 00:00:00
abstract:BACKGROUND:Heart rate recovery after treadmill electrocardiographic exercise stress test is modulated by the autonomic nervous system. Analysis of heart rate variability can provide useful information about autonomic control of the cardiovascular system. OBJECTIVE:The aim of the study was to test the hypothesis of ass...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2008000600005
更新日期:2008-06-01 00:00:00
abstract:BACKGROUND:Hypertrophic cardiomyopathy (HCM) is the most common heart disease of genetic origin in the world population, with a prevalence of at least 1/500. The association with systemic arterial hypertension (SAH) is not uncommon, as it affects approximately 25% of the world population. Most studies aim at the differ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20190176
更新日期:2019-09-02 00:00:00
abstract:BACKGROUND:Few data are available on diastolic function in patients with aortic stenosis (AOS) with indication of surgical treatment. A potential correlation between biomarkers and diastolic function has not been established. OBJECTIVE:The aim of our study was to evaluate diastolic function in patients with AOS waitin...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20130076
更新日期:2013-05-01 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::Coronary artery bypass graft (CABG) is a well established procedure with current precise indications. The advent and spread of this technique was possible after the introduction of the coronary angiogram. Although many evaluation methods have been developed in the past years, to date, none have been able to replace th...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2009000900019
更新日期:2009-09-01 00:00:00
abstract::There are limited data regarding the use of hypolipidemic agents concomitantly with immunosuppressive drugs. Best evidence is provided for the use of statins and cyclosporine. In terms of pharmacodynamics, these two drugs have different substrates. In respect to pharmacokinetics, statins usually do not modify serum co...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:/S0066-782X2005002400013
更新日期:2005-10-01 00:00:00
abstract:OBJECTIVE:Our objective was to determine the rate of hypertensive patients with controlled BP (BP < 140 x 90 mmHg) and to study its relationship with regular attendance to ambulatory appointments. METHODS:A total of 245 medical records from patients followed up at the Unidade Clínica de Hipertensão Arterial (Clinical ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2005001600002
更新日期:2005-09-01 00:00:00
abstract:PURPOSE:To show the author's experience with percutaneous transluminal coronary angioplasty (PTCA) in patients with prior coronary bypass surgery. METHODS:Between January 1989 and January 1991, 629 PTCA in 572 patients were performed. Forty-eight had previous revascularization surgery with interval range of 4 days to ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1992-09-01 00:00:00
abstract:BACKGROUND:Effective interventions to improve medication adherence are usually complex and expensive. OBJECTIVE:To assess the impact of a low-cost intervention designed to improve medication adherence and clinical outcomes in post-discharge patients with CVD. METHOD:A pilot RCT was conducted at a teaching hospital. I...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,随机对照试验
doi:10.5935/abc.20140151
更新日期:2014-12-01 00:00:00
abstract:BACKGROUND:There is evidence that prehospital thrombolysis improves the outcome in ST-elevation myocardial infarction (STEMI). OBJECTIVE:This study aimed at comparing the cost-effectiveness of prehospital compared to inhospital thrombolysis for STEMI from the National Health System perspective. METHODS:A decision-ana...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2008000200005
更新日期:2008-02-01 00:00:00
abstract:PURPOSE:To evaluate the results of percutaneous balloon valvuloplasty (PBV) for membranous subaortic stenosis (MSAS). METHODS:Seven patients with MSAS were submitted to PBV using the retrograde approach. Hemodynamic and angiographic studies were performed before and after the procedure. The balloon/annulus ratio varie...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 临床试验,杂志文章
doi:
更新日期:1997-05-01 00:00:00
abstract::Due to the increasing use of the cardiac magnetic resonance (CMR) method and the frequent implementation of such method in new services, we describe herein, in a step-by-step format, the acquisition techniques that are necessary for a complete cardiac approach, of the main anatomical planes of the heart used by CMR. ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,评审
doi:10.1590/s0066-782x2010001600014
更新日期:2010-12-01 00:00:00
abstract:OBJECTIVE:To determine the prevalence of cardiovascular disease (CVD) and traditional risk factors in patients with chronic renal failure undergoing evaluation for inclusion on the renal transplantation list. METHODS:One hundred ninety-five patients with dialytic chronic renal failure underwent clinical evaluation and...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2005000200012
更新日期:2005-02-01 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:PURPOSE:To test the association between diabetes mellitus and ischaemic heart disease (IHD) in males and females, after adjusting for known confounders and/or modifiers of effect. METHODS:The study was designed as a case-control and the period of data collection was one year (March/93 until February/94). The associati...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1996-02-01 00:00:00
abstract::Despite being relatively recent, a growing and significant accumulation of experimental and clinical evidence has been observed that points to a gradual state of immune-inflammatory activation in patients with heart failure (HF). High levels of several cytokines are found in the circulation and cardiac muscle of indiv...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,评审
doi:10.1590/s0066-782x2007001500009
更新日期:2007-09-01 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::We report the case of an 8-month-old female infant with Uhl's anomaly, who underwent successful cardiac transplantation. The clinical findings, complementary laboratory tests, anatomic findings, and differential diagnosis of the anomaly are discussed. ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2001000700008
更新日期:2001-07-01 00:00:00
abstract:OBJECTIVE:to estimate the prevalence of coronary artery disease (CAD) in valvular heart disease of rheumatic (RVHD) and non-rheumatic (NVHD) etiology, assessing possible predictive factors for the presence of CAD. METHODS:This is a cross-sectional study of a series of cases obtained from a pre-defined population, wher...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2008000300010
更新日期:2008-03-01 00:00:00
abstract:BACKGROUND:Patients with thalassemia major present chronic hemolysis and require regular blood transfusions which may cause iron overload cardiomyopathy and chronic heart failure. Hemochromatosis is characterized by excessive iron accumulation in tissues, and heart involvement is the main cause of death in patients wit...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2013005000001
更新日期:2013-01-01 00:00:00