Qtc Dispersion
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Is there a relation between computed tomography findings and electrocardiography findings in COVID-19?
SUMMARY OBJECTIVE: COVID-19 can cause lung damage and may present with pneumonia in patients. In the present study, the correlation between the severity of pneumonia and electrocardiography parameters of COVID-19 were examined. METHODS: A total of 93 COVID-19 patients and a control group consisting of 62 volunteers were studied. Computed thorax tomography
Rev. Assoc. Med. Bras.. Publicado em: 2021-02
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2. QT Interval Dispersion Behavior in Patients With and Without Obstructive Coronary Artery Disease Undergoing Exercise Test
Abstract Background: Stress test is used to detect coronary artery disease (CAD). The QTc interval dispersion (dQTc) is an electrocardiographic index of ventricular repolarization heterogeneity. Some researchers have linked transient myocardial ischemia induced by physical exertion with increased heterogeneity of ventricular repolarization measured by dQTc.
Int. J. Cardiovasc. Sci.. Publicado em: 2020-05
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3. Hepatic Elastography in the Assessment of Heart Failure: Where We Came from and Where We Are Going
Abstract Background: Stress test is used to detect coronary artery disease (CAD). The QTc interval dispersion (dQTc) is an electrocardiographic index of ventricular repolarization heterogeneity. Some researchers have linked transient myocardial ischemia induced by physical exertion with increased heterogeneity of ventricular repolarization measured by dQTc.
Int. J. Cardiovasc. Sci.. Publicado em: 2020-05
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4. The effects of volatile induction and maintenance of anesthesia and selective spinal anesthesia on QT interval, QT dispersion, and arrhythmia incidence
OBJECTIVE: The effects of sevoflurane general anesthesia and bupivacaine selective spinal anesthesia on QT dispersion (QTd) and corrected QT (QTc) interval were investigated. METHODS AND MATERIALS: This prospective, randomized, double-blind study was conducted between July and September 2009 in the Urology and General Surgery operating rooms. Forty ASA I-II
Clinics. Publicado em: 2010-06
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5. Hipertrofia ventricular esquerda em pacientes com doença renal crônica em hemodiálise: análise comparativa entre eletrocardiograma, radiografia de tórax e ecocardiograma. / Left ventricular hypertrophy in hemodialysis patients with chronic kidney disease: comparative analysis between electrocardiogram, chest radiography and echocardiogram.
Objective: To establish the diagnosis of left ventricular hypertrophy (LVH) in haemodialysis (HD) patients with chronic kidney disease (CKD) using seven different electrocardiographic criteria and chest radiography, and to correlate these two diagnostic methods with left ventricular mass index (LVMI) as obtained by echocardiogram. Methods: Cross-sectional st
Publicado em: 2009
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6. Glicogenio cardiaco em diabetes experimental : efeitos do tratamento com metformina e/ou glibenclamida sobre as funções cardiacas em coração isolado / Cardic glycogen in experimental diabetes: effects of the treatment with metformin and/or glibenclamide on cardic function of isolated heart
Metformin and glibenclamide are pharmacos used to decrease blood glucose on type 2 diabetics. Metformin decreases gastrointestinal absorption of glucose and gluconeogenesis and increases peripheric glucose uptake. Glibenclamide increases insulin secretion by blocking K+ channels. Besides these effects, metformin and glibenclamide may influence cardiovascular
Publicado em: 2005
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7. Avaliação da dispersão do intervalo QTc em pacientes com insuficiência cardíaca crônica secundária à cardiomiopatia da doença de Chagas.
O objetivo deste trabalho foi avaliar a dispersão do intervalo QTc em pacientes com Insuficiência Cardíaca Crônica secundária à Cardiomiopatia da doença de Chagas em relação às variáveis clínicas, eletrocardiográficas, laboratoriais e ecocardiográficas em virtude da ausência de tais dados na literatura médica. Foram analisados os Prontuários
Publicado em: 2004
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8. DispersÃo do intervalo QT na cardite reumÃtica
Despite the French term "acute joint rheumatism" emphasizing the involvement of the joints, it is heart attacks that are the major cause of morbidity and mortality in rheumatic disease. Rheumatic carditis, the only manifestation of the disease that can be lethal in its acute phase and produce permanent sequelae, continues to be quite prevalent in economicall
Publicado em: 2004
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9. Reduction of QTc interval dispersion. Potential mechanism of cardiac protection of pyridostigmine bromide
OBJECTIVE: Parasympathetic dysfunction is an independent risk factor in individuals with coronary artery disease, and cholinergic stimulation is a potential therapeutical option. We determined the effects of pyridostigmine bromide, a reversible anticholinesterase agent, on electrocardiographic variables of healthy individuals. METHODS: We carried out a cross
Arquivos Brasileiros de Cardiologia. Publicado em: 2000-09
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10. Use of lead adjustment formulas for QT dispersion after myocardial infarction.
OBJECTIVE--To determine whether lead adjustment formulas for correcting QT dispersion measurements are appropriate in patients after myocardial infarction. DESIGN--Retrospective analysis of QTc dispersion measurements in 461 electrocardiograms (ECGs). Data are presented as uncorrected QTc dispersion "adjusted" for a number of measurable leads and coefficient
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11. Abnormal myocardial repolarisation in response to hypoxaemia and fenoterol.
BACKGROUND--Prolongation of the QTc interval has been associated with cardiac dysrhythmias and sudden death. QTc dispersion (interlead variability in QTc interval) has recently been proposed as being a more sensitive marker of repolarisation abnormalities and shown to be a more specific index of arrhythmia risk. Although hypoxaemia and fenoterol have previou
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12. QT dispersion and components of the QT interval in ischaemia and infarction.
OBJECTIVE--To evaluate changes in QT dispersion and components of the QT interval in patients admitted with unstable angina and acute myocardial infarction and to study the dynamics of these changes in patients with infarction. METHODS--Prospective study recording electrocardiograms at 50 mm/s in patients admitted with typical cardiac chest pain. Subsequent