Abstract:
PURPOSE:To study if dopamine in dopaminergic doses (1.5 and 4.0 micrograms/kg/min) had some effect on the pulmonary vasoconstriction mechanism, and if in those doses the drug had some action on systemic and pulmonary hemodynamic variables, as well as in the pulmonary gas exchange. METHODS:Seventeen normal mongrel dogs, anesthetized and paralized under mechanical ventilation were submitted to two different gas mixtures: room air (F1O2 = 0.2093 -10 dogs) and hypoxic mixture (F1O2 = 0.125 -7 dogs). Dopamine was infused in both groups during 15 min in the two doses 1.5 and 4.0 micrograms/km/min, separated by a period of 30 min. RESULTS:Pulmonary hemodynamics and gas exchange variables after infusion of dopamine at 1.5 and 4.0 micrograms/km/min in dogs in normoxia and hypoxia. [table: see text] CONCLUSION:Dopamine in the used doses had no action on the pulmonary circulation and on the hypoxic pulmonary vasoconstriction mechanism; pulmonary gas exchange was not affected by dopamine in both doses during normoxia and hypoxia; in the experimental model there was no evidence of dopaminergic receptors in the pulmonary vessels.
journal_name
Arq Bras Cardioljournal_title
Arquivos brasileiros de cardiologiaauthors
de Araújo FG,Romaldini H,Bogossian M,Afonso JE,Uehara Csubject
Has Abstractpub_date
1995-09-01 00:00:00pages
233-6issue
3eissn
0066-782Xissn
1678-4170journal_volume
65pub_type
杂志文章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 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::An 8 year old child suffering from asthenia and complete atrioventricular block, probably congenital. During the tread-mill test there was a sudden electrocardiogram change to a ventricular preexcitation pattern. Besides this rare association, we emphasize the importance of the autonomic balance over the accessory pat...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1993-11-01 00:00:00
abstract:OBJECTIVE:Compare the therapeutic response of symptomatic, hypertensive patients to symptomatic medication or anti-hypertensive drugs at the Emergency Unit. METHODS:A randomized, blind clinical trial involving 100 (one hundred) patients assisted at the Cardiology Emergency Unit at Oswaldo Cruz University Hospital (HUO...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,随机对照试验
doi:10.1590/s0066-782x2005001500008
更新日期:2005-08-01 00:00:00
abstract::Case report on a 6-year-old patient with vascular ring, due to double aortic arch. The patient was asymptomatic. The barium-filled esophagus showed bilateral indentations and a large posterior indentation. Echocardiographic study in notch suprasternal view revealed features of this pathology. The diagnosis was made by...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1993-01-01 00:00:00
abstract:PURPOSE:To evaluate the feasibility, efficacy and safety of the use of 4F Judkins catheters for coronary angiography. METHODS:From August/95 to January/96, 70 patients with suspected coronary artery disease underwent coronary cineangiography by the Judkins technique, with 4F catheters. Following puncture of the right ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x1998000100002
更新日期:1998-01-01 00:00:00
abstract:BACKGROUND:When the Japanese immigrated to the Americas, they were subjected to Westernization, with a great change in lifestyle, specially in dietary habits, and this may explain the increase in the incidence of diabetes mellitus (DM), metabolic syndrome (MS) and cardiovascular disease among them. OBJECTIVE:To study ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2009000500008
更新日期:2009-05-01 00:00:00
abstract:BACKGROUND:Depression is a common comorbidity in heart failure (HF); however, the mechanisms related to a poorer outcome of depressed patients with HF remain unclear. OBJECTIVE:To evaluate the role of severe depression in the outcome of patients with decompensated HF. METHODS:A total of 43 patients with advanced HF, ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2010005000125
更新日期:2010-12-01 00:00:00
abstract:BACKGROUND:Endomyocardial biopsy (EMB) is the gold standard method for the diagnosis of cellular rejection (CR) after heart transplantation (HT). OBJECTIVE:To test the hypothesis that tissue Doppler imaging (TDI) could detect CR > 3A and add diagnostic information compared to conventional Doppler. METHODS:Fifty-four ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2011005000060
更新日期:2011-07-01 00:00:00
abstract:BACKGROUND:Interleukin-6 (IL-6) is implicated in the pathogenesis of coronary heart disease (CHD), and IL-6 expression has associated with reduced DNA methylation of its gene promoter. However, there are no data on IL-6 promoter methylation and the risk of CHD. OBJECTIVE:To examine whether IL-6 promoter methylation me...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20160124
更新日期:2016-08-01 00:00:00
abstract:BACKGROUND:Radiofrequency ablation (RFA) in children is an increasingly common practice. OBJECTIVE:To evaluate, in our institution, the results of RFA in children younger than 15 years. METHODS:A total of 125 children submitted to RFA between May 1991 and May 2010 were analyzed. RESULTS:Sixty-seven (53.6%) children ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2012005000042
更新日期:2012-06-01 00:00:00
abstract:PURPOSE:To report the result of patients treated with IV methylprednisolone divided into three groups and compare their follow-up during the last 12 years. METHODS:Seventy children with active rheumatic carditis (76 episodes) in heart failure Class III and IV (NYHA) were studied. The diagnosis was based on modified Jo...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x1999000500007
更新日期:1999-05-01 00:00:00
abstract:BACKGROUND:The diagnosis of arterial hypertension based on measurements of blood pressure in the office has low accuracy. OBJECTIVE:To evaluate the prevalence of masked hypertension (MH) and white-coat hypertension through home blood pressure monitoring (HBPM) in pre-hypertensive and stage 1 hypertensive patients. ME...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20190147
更新日期:2019-11-01 00:00:00
abstract:OBJECTIVE:To determine the prevalence of dyslipidemias in adults in the city of Campos dos Goytacazes, in the Brazilian state of Rio de Janeiro, and to identify its relation to risk factors. METHODS:Cross-sectional, population-based, observational study with sampling through conglomerates and stratified according to s...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2003001100005
更新日期:2003-09-01 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:Clinical and epidemiological studies have demonstrated a strong association between eating habits and chronic diseases, particularly cardiovascular events, although not all the mechanisms of action are understood. OBJECTIVE:To describe and analyze the cardiovascular risk (CVR) in vegetarians and omnivores r...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2007001600005
更新日期:2007-10-01 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 detect the prevalence of systemic hypertension in children and to establish the relation between blood pressure levels and sex, age, ethnicity, weight, and height. METHODS:The prevalence of systemic hypertension and its relation to sex, age, ethnicity, weight, and height were studied in 611 students aged ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2003001200005
更新日期:2003-10-01 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:OBJECTIVES:To analyze retrograde conduction during junctional ectopic tachycardia (JET) episodes and investigate the existence of a relationship between the presence of a retrograde block and the risk of atrioventricular block (AVB) development during radiofrequency ablation procedures in patients with nodal atrioventr...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2007000200003
更新日期:2007-02-01 00:00:00
abstract::A case of pulmonary atresia with intact ventricular septum and a hypoplastic right ventricle, with three wall formed portions, that became naturally well developed until 2 years of age, is related. A Blalock-Taussig shunt had been performed early in life. Z value of tricuspid valve of 0.3 and left ventricular in ECG h...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1995-01-01 00:00:00
abstract::The case of a 19-year-old young man with clinical picture of congestive heart failure and supraventricular tachycardia is reported. Heart failure got better with conventional treatment, but the tachycardia persisted in spite of antiarrhythmic drugs. Echocardiogram showed dilated cardiomyopathy of important degree and ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1992-04-01 00:00:00
abstract:BACKGROUND:Most reports regarding the obesity paradox have focused on body mass index (BMI) to classify obesity and the prognostic values of other indirect measurements of body composition remain poorly examined in heart failure (HF). OBJECTIVE:To evaluate the association between BMI and other indirect, but easily acc...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20130185
更新日期:2013-11-01 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 verify whether accentuated reductions of left ventricular volume lead to mitral valve prolapse. METHODS:Seven mongrel dogs were bled through the internal jugular vein, the systolic systemic pressure being kept between 100 and 140 mmHg by means of continuous infusion of dopamine; the inferior vena cava vein,...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1993-10-01 00:00:00
abstract::Two 38 and 53-year old male patients with unstable angina, whose hemodynamic study showed an isolated stenosis of the left coronary artery ostium, were submitted to a surgical angioplasty of the left main coronary artery (LMCA) with saphenous vein patch. At the end of the operation, the patients presented intermitent ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x1997000900007
更新日期:1997-09-01 00:00:00
abstract:BACKGROUND:Data from over 4 decades have reported a higher incidence of silent infarction among patients with diabetes mellitus (DM), but recent publications have shown conflicting results regarding the correlation between DM and presence of pain in patients with acute coronary syndromes (ACS). OBJECTIVE:Our primary o...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.5935/abc.20140106
更新日期:2014-09-01 00:00:00
abstract::The authors studied 20 patients undergoing cardiac surgery with extracorporeal circulation using a protocol proposed by Bull for the control of heparinization using the activated coagulation time of whole blood proposed by Hattersley. The patients, alterations in the coagulation and in red cell values were evaluated c...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1989-03-01 00:00:00
abstract::We report the case of a female patient with obstructive lesions in the right and left carotid, right renal, left subclavian and left common iliac arteries which were percutaneously treated. ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:10.1590/s0066-782x2006001800024
更新日期:2006-11-01 00:00:00
abstract::A 54-year-old man with Chagas cardiomyopathy that was submitted to a heart transplantation and five months later presented a progressive increase in liver enzymes. Diagnosis of chronic active hepatitis was confirmed by histopathologic studies. A transitory interruption of treatment with azathioprine and the posterior ...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
更新日期:1991-07-01 00:00:00