Myocardial Ischemia Diagnosis
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Comparison between Bruce and Ramp Protocols for Exercise Testing in the Diagnosis of Myocardial Ischemia
Abstract Background: Exercise tests are an important tool in the investigation of myocardial ischemia. The ramp protocol has gained increasing importance in clinical practice because of the possibility of individualizing its exercise intensity. Objective: To assess and compare the sensitivity, specificity, and accuracy of Bruce and ramp protocols for exerc
International Journal of Cardiovascular Sciences. Publicado em: 2022
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2. Early Use of Handgrip Exercise Associated with Dobutamine Stress Echocardiography in Women
Abstract Background Coronary artery disease (CAD) is an important cause of morbidity and mortality in women and requires early diagnosis for defining the appropriate treatment. Objective To identify the positive predictive value (PPV) and safety of the early use of handgrip exercise in pharmacological stress echocardiography using dobutamine (early-ECHO) i
Int. J. Cardiovasc. Sci.. Publicado em: 2021-08
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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. 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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5. Avaliação da Isquemia Miocárdica em Obesos Submetidos à Ecocardiografia sob Estresse Físico
Background: Physical stress echocardiography is an established methodology for diagnosis and risk stratification of coronary artery disease in patients with physical capacity. In obese (body mass index ≥ 30 kg/m2) the usefulness of pharmacological stress echocardiography has been demonstrated; however, has not been reported the use of physical stress echo
Arq. Bras. Cardiol.. Publicado em: 13/02/2015
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6. Identificação de alvos protéicos com potencial diagnóstico e prognóstico em doença arterial coronária / Identification of protein targets with potential diagnostic and prognostic in coronary artery disease
Worldwide, millions of patients are treated in emergencies because they had acute-onset chest pain, but only a portion is due to coronary syndrome. In situations like this is extremely important to distinguish when the chest pain is due to myocardial ischemia, as this is high risk and initiation of treatment should be immediate. New biomarkers are needed to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/06/2012
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7. Comparação das alterações da motilidade segmentar e da perfusão miocárdica durante o estresse pela dobutamina-atropina, pela ecocardiografia com contraste e pela ressonância magnética, na detecção de doença arterial coronária obstrutiva / Comparison of wall motion and myocardial perfusion abnormalities during dobutamine-atropine stress with myocardial contrast echocardiography and magnetic resonance imaging for the detection of obstructive coronary artery disease
The detection of left ventricular (LV) wall motion abnormalities induced by pharmacological or physical stress has a well established role in the non-invasive determination of myocardial ischemia. However, following the temporal sequence of events in the ischemic cascate, perfusion heterogeneity is one of the earliest and may occur before wall motion abnorma
Publicado em: 2010
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8. Acurácia diagnóstica da ecocardiografia sob estresse associada ao estudo da perfusão miocárdica com contraste na avaliação da isquemia miocárdica: estudo comparativo entre adenosina e dobutamina / Diagnostic accuracy of quantitative real time myocardial contrast echocardiography for the detection of myocardial ischemia. A comparative study between adenosine and dobutamine
A ecocardiografia com perfusão miocárdica em tempo real (EPMTR) permite a quantificação do fluxo sangüíneo miocárdico e, quando realizada durante o estresse, da reserva de fluxo miocárdico (reserva Axß). Essa técnica tem potencial para ser uma importante ferramenta para o diagnóstico não-invasivo da doença arterial coronariana (DAC). Apesar do c
Publicado em: 2005
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9. Acute myocardial infarction: clinical and epidemiological profile and factors associated with in-hospital death in the municipality of Rio de Janeiro
OBJECTIVE: To study the factors associated with the risk of in-hospital death in acute myocardial infarction in the Brazilian public health system in Rio de Janeiro, Brazil. METHODS: Sectional study of a sample with 391 randomly drawn medical records of the hospitalizations due to acute myocardial infarction recorded in the hospital information system in 199
Arquivos Brasileiros de Cardiologia. Publicado em: 2003-06
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10. Chest Pain Units: A Modern Way of Managing Patients with Chest Pain in the Emergency Department
It is estimated that 5 to 8 million individuals with chest pain or other symptoms suggestive of myocardial ischemia are seen each year in emergency departments (ED) in the United States 1,2, which corresponds to 5 to 10% of all visits 3,4. Most of these patients are hospitalized for evaluation of possible acute coronary syndrome (ACS). This generates an esti
Arquivos Brasileiros de Cardiologia. Publicado em: 2002-08
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11. "Análise temporal do acúmulo de sódio no miocárdio de cães avaliado in vivo por ressonância magnética durante oclusão e reperfusão coronária" / Time course of myocardial sodium accumulation in dogs evaluated by in vivo magnetic resonance imaging during coronary occlusion and reperfusion.
Loss of membrane permeability caused by ischemia leads to cellular sodium accumulation and myocardial edema. This phenomenon has important implications to left ventricular structure and function in the first hours after myocardial infarction. We hypothesized that during this period of time, after prolonged coronary occlusion and complete reflow, the rate of
Publicado em: 2002
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12. Reversible congestive heart failure caused by myocardial hibernation.
Myocardial hibernation is reversible contractile dysfunction of cardiac myocytes caused by chronic ischemia. Animal studies and observations in human beings suggest that the term hibernation is a misnomer. Repetitive ischemic insult that does not produce necrosis results in functional and histologic tissue deterioration, which culminates in myocyte apoptosis