Abstract:
BACKGROUND:Sudden death is the leading cause of death in Chagas disease (CD), even in patients with preserved ejection fraction (EF), suggesting that destabilizing factors of the arrhythmogenic substrate (autonomic modulation) contribute to its occurrence. OBJECTIVE:To determine baroreflex sensitivity (BRS) in patients with undetermined CD (GI), arrhythmogenic CD with nonsustained ventricular tachycardia (NSVT) (GII) and CD with spontaneous sustained ventricular tachycardia (STV) (GIII), to evaluate its association with the occurrence and complexity of arrhythmias. METHOD:Forty-two patients with CD underwent ECG and continuous and noninvasive BP monitoring (TASK force monitor). The following were determined: BRS (phenylephrine method); heart rate variability (HRV) on 24-h Holter; and EF (echocardiogram). RESULTS:GIII had lower BRS (6.09 ms/mm Hg) as compared to GII (11.84) and GI (15.23). The difference was significant between GI and GIII (p = 0.01). Correlating BRS with the density of ventricular extrasystoles (VE), low VE density (<10/h) was associated with preserved BRS. Only 59% of the patients with high VE density (> 10/h) had preserved BRS (p = 0.003). Patients with depressed BRS had higher VE density (p = 0.01), regardless of the EF. The BRS was the only variable related to the occurrence of SVT (p = 0.028). CONCLUSION:The BRS is preserved in undetermined CD. The BRS impairment increases as disease progresses, being more severe in patients with more complex ventricular arrhythmias. The degree of autonomic dysfunction did not correlate with EF, but with the density and complexity of ventricular arrhythmias.
journal_name
Arq Bras Cardioljournal_title
Arquivos brasileiros de cardiologiaauthors
Santos AM,Scanavacca MI,Darrieux F,Ianni B,Melo SL,Pisani C,Santos Neto F,Sosa E,Hachul DTdoi
10.5935/abc.20140066subject
Has Abstractpub_date
2014-06-01 00:00:00pages
579-87issue
6eissn
0066-782Xissn
1678-4170pii
S0066-782X2014005040066journal_volume
102pub_type
杂志文章abstract:BACKGROUND:Several studies have demonstrated clinical benefits of fish consumption for the cardiovascular system. These effects are attributed to the increased amounts of polyunsaturated fatty acids in these foods. However, the concentrations of fatty acids may vary according to region. OBJECTIVE:The goal of this stud...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20140176
更新日期:2015-02-01 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:PURPOSE:The decision of stopping cardiopulmonary resuscitation (CPR) in patients brought to emergency room in arrest remains a challenge. Such decision is even more difficult when someone is brought by bystanders, after an acute loss of consciousness without any out-of-hospital care. To evaluate the probability of surv...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1996-11-01 00:00:00
abstract:BACKGROUND:Electrocardiographically-detected left ventricular hypertrophy (LVH) is a strong predictor of cardiovascular morbidity and mortality. OBJECTIVE:To assess the performance of the Sokolow-Lyon-Rappaport (SLR) and Cornell voltage criteria in a population sample regarding the diagnosis of LVH on echocardiogram (...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2008000100008
更新日期:2008-01-01 00:00:00
abstract:BACKGROUND:Cardiac tumors are rare, mostly benign with high embolic potential. OBJECTIVES:To correlate the histological type of cardiac masses with their embolic potential, implantation site and long term follow up in patients undergoing surgery. METHODS:Between January 1986 and December 2011, we retrospectively anal...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20140096
更新日期:2014-07-01 00:00:00
abstract:PURPOSE:To study mononuclear magnesium and serum cations (Na, K and Mg) in elderly hypertensive patients treated with hydrochlorothiazide during 90 days. PATIENTS AND METHODS:15 elderly hypertensive patients treated with hydrochlorothiazide, 25 mg/day or placebo. A method of freezing produced total lysis of the cells;...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 临床试验,杂志文章
doi:
更新日期:1991-06-01 00:00:00
abstract:BACKGROUND:Plasma levels of brain natriuretic peptides have better diagnostic accuracy compared to clinical-radiologic judgment for acute heart failure. In acute coronary syndromes (ACS), the prognostic value of acute heart failure is incorporated into predictive models through Killip classification. It is not establis...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.36660/abc.20180345
更新日期:2020-04-01 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:OBJECTIVE:To evaluate the effects of swimming on pulmonary water content in animals with heart failure (HF) after myocardial infarction (MI).
METHODS:After coronary occlusion, MI size 20%
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2006001400008
更新日期:2006-07-01 00:00:00
abstract::Treatment of DHF is a challenge even for the experienced physician. Advances in research have brought new treatment options that are helping change paradigms. The available evidence suggests that new drugs like levosimendan and nesiritide will assume relevant positions as alternatives or complements to treatment with ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,评审
doi:10.1590/s0066-782x2006001600022
更新日期:2006-09-01 00:00:00
abstract:BACKGROUND:Despite reports in the literature that both leisure-time physical activity (LTPA) and commuting physical activity (CPA) can promote health benefits, the literature lacks studies comparing the associations of these domains of physical activity with cardiovascular risk scores. OBJECTIVE:To investigate the ass...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20170178
更新日期:2018-01-01 00:00:00
abstract:BACKGROUND:Posterior subcapsular cataract is a tissue reaction commonly found among professionals exposed to ionizing radiation. OBJECTIVE:To assess the prevalence of cataract in professionals working in hemodynamics in Brazil. METHODS:Professionals exposed to ionizing radiation (group 1, G1) underwent slit lamp exam...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20190028
更新日期:2019-04-01 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::A 79-year-old woman developed myocardial infarction associated with acute pulmonary edema. The electrocardiogram recorded QRS complex of QS type in V1 with upper ST extending from V3R to V6R. The polarity of the P wave in bipolar leads was positive, so compatible with dextrorotation complicated by myocardial infarctio...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,评审
doi:
更新日期:1992-07-01 00:00:00
abstract:BACKGROUND:Although team-based care is recommended for patients with hypertension, results of this intervention in a real-world setting are missing in the literature. OBJECTIVE:To report the results of a real-world long-term team-based care for hypertensive patients we conducted this study. METHODS:Data of hypertensi...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.36660/abc.20180384
更新日期:2020-08-28 00:00:00
abstract::We report on a 30-year-old female patient, with biological mitral valve prosthesis due to symptomatic mitral stenosis and a history of acute myocardial infarction and generalized tonic-clonic seizure episodes, visual hallucinations, cerebral thromboembolic events and, at present, chorea and acute carditis. The patient...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2012000200016
更新日期:2012-02-01 00:00:00
abstract:OBJECTIVE:To evaluate the anti-hypertensive effect of verapamil COER-24 180/240 mg in a single dose at bedtime as single therapy in mild to moderate hypertensives. METHODS:A multicentric, open, placebo controlled study of 81 hypertensive patients older than 20 years-old followed to 8 weeks. Blood pressure was measured...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1590/s0066-782x2000000300009
更新日期:2000-03-01 00:00:00
abstract::The evaluation of the defibrillation threshold (DFT) during the implantation of a cardioverter-defibrillator (ICD) is an important stage of the procedure, as a high DFT can be found in up to 16% of patients. We report a patient with idiopathic dilated cardiomyopathy (DCM) submitted to a biventricular ICD implantation....
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2012000600017
更新日期:2012-06-01 00:00:00
abstract:BACKGROUND:Serum cystatin C (s-CC), an endogenous marker of kidney function, has also been proposed as a cardiovascular risk marker. However, it is unknown whether it is a direct marker of atherosclerosis, independently of kidney function. OBJECTIVE:The aim of this study was to correlate s-CC with two surrogate marker...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2012005000083
更新日期:2012-10-01 00:00:00
abstract::Ebstein's anomaly is an uncommon congenital heart defect, with a prevalence of 0.3-0.5%. Its association with an imperforate tricuspid valve is an even more rare situation (less than 10% of cases). Prenatal diagnosis of this association by means of fetal echocardiography has not been reported. We describe here this as...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2000000700006
更新日期:2000-07-01 00:00:00
abstract:BACKGROUND:Chronic kidney disease (CKD) is frequently present in patients with aortic valve disease. Decreased kidney perfusion as a consequence of reduced cardiac output may contribute to renal dysfunction in this setting. OBJECTIVE:Given the potential reversibility of kidney hypoperfusion after valve repair, this st...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.36660/abc.20180356
更新日期:2019-12-01 00:00:00
abstract:OBJECTIVE:To characterize the cardiac electrophysiologic effects of cocaine. METHODS:In 8 dogs (9-13 kg), electrophysiologic parameters and programmed stimulation were undertaken using transvenous catheters at baseline, and after cocaine intravenous infusion (12 mg/kg bolus followed by 0.22 mg/kg/min for 25 minutes). ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2003000900002
更新日期:2003-07-01 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::We report new percutaneous techniques for perforating the pulmonary valve in pulmonary atresia with intact ventricular septum, in 3 newborns who had this birth defect. There was mild to moderate hypoplastic right ventricle, a patent infundibulum, and no coronary-cavitary communications. We succeeded in all cases, and ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2001001100008
更新日期:2001-11-01 00:00:00
abstract:PURPOSE:To evaluate septal perfusion and contractility in patients with left bundle branch block (LBBB). METHODS:Twenty patients were submitted to myocardial scintigraphy with Tecnecium-99m isontrile after exercise and dipyridamole infusion. The septal contractility was observed during the radionuclide ventriculograph...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 临床试验,杂志文章
doi:
更新日期:1995-11-01 00:00:00
abstract:BACKGROUND:The identification of risk factors for postoperative complications in cardiac patients with surgical indication may influence the therapeutic decision. OBJECTIVE:To describe the experience of a Cardiology hospital in the validation and practical use of a preoperative risk score. METHODS:To validate TUMAN's...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2008001700010
更新日期:2008-11-01 00:00:00
abstract:OBJECTIVE:Patients who underwent heart transplantation (HTX) experience a reduction in the elevation that is usual in systolic blood pressure during exercise testing. Of unknown origin, this phenomenon varies in frequency and intensity. The aim of this study was to analyze the relationship between systolic blood pressu...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2006001800013
更新日期:2006-11-01 00:00:00
abstract:BACKGROUND:Chemotherapy with doxorubicin and cyclophosphamide, although efficient for treating breast cancer, is associated with cardiovascular complications. Recent studies seek to identify methods that can early detect cardiological and vascular changes as a strategy to decrease the incidence of cardiovascular comorb...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20180168
更新日期:2018-11-01 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::Over the last two decades the results of randomized clinical studies, which are powerful aids for correctly assessing therapeutical strategies, have consolidated cardiological practice. In addition, scientifically interesting hypotheses have been generated through the results of epidemiological studies. Properly condu...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,评审
doi:10.1590/s0066-782x1999000300002
更新日期:1999-03-01 00:00:00