Radionuclide Ventriculography
Mostrando 1-12 de 57 artigos, teses e dissertações.
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1. Abnormal response of left ventricular systolic function to submaximal exercise in post-partial left ventriculotomy patients
Patients with heart failure who have undergone partial left ventriculotomy improve resting left ventricular systolic function, but have limited functional capacity. We studied systolic and diastolic left ventricular function at rest and during submaximal exercise in patients with previous partial left ventriculotomy and in patients with heart failure who had
Publicado em: 2010
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2. Resposta anormal da função sistólica do ventrículo esquerdo ao exercício submáximo em pacientes submetidos à ventriculectomia parcial esquerda / Abnormal response of left ventricular systolic function to submaximal exercise in post-partial left ventriculectomy patients
Introdução. Pacientes com insuficiência cardíaca submetidos à ventriculectomia parcial esquerda apresentam melhora na função sistólica do ventrículo esquerdo em repouso, porém continuam apresentando limitação funcional. Objetivo. Para melhor compreender os mecanismos desta limitação funcional, estudamos a função sistólica e diastólica do ve
Publicado em: 2007
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3. Abnormal response of left ventricular systolic function to submaximal exercise in post-partial left ventriculotomy patients
Patients with heart failure who have undergone partial left ventriculotomy improve resting left ventricular systolic function, but have limited functional capacity. We studied systolic and diastolic left ventricular function at rest and during submaximal exercise in patients with previous partial left ventriculotomy and in patients with heart failure who had
Brazilian Journal of Medical and Biological Research. Publicado em: 13/07/2006
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4. Effects of carvedilol in heart failure due to dilated cardiomyopathy. Results of a double-blind randomized placebo-controlled study (CARIBE study)
OBJECTIVE: To assess the effects of carvedilol in patients with idiopathic dilated cardiomyopathy. METHODS: In a double-blind randomized placebo-controlled study, 30 patients (7 women) with functional class II and III heart failure were assessed. Their ages ranged from 28 to 66 years (mean of 43±9 years), and their left ventricular ejection fraction varied
Arquivos Brasileiros de Cardiologia. Publicado em: 2000-03
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5. Assessment of function of contractile segments in patients with left ventricular aneurysms by quantitative first pass radionuclide ventriculography. Haemodynamic correlation at rest and exercise.
Thirteen patients with left ventricular aneurysms complicating myocardial infarction were studied by contrast angiography and by first pass radionuclide ventriculography. The ejection fraction of the contractile segment (EFCS) was measured from both studies using a double hemishperoid model, and the values correlated closely. There was a monotonic relation b
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6. Limitations of radionuclide ventriculography in the non-invasive diagnosis of coronary artery disease. A correlation with right heart haemodynamic values during exercise.
A consecutive series of 56 patients with chest pain but no evidence of previous myocardial infarction was prospectively studied by radionuclide ventriculography to determine the value of global and regional radionuclide indices in detecting coronary artery disease. The results were correlated with the clinical judgment of chest pain, the results of the exerc
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7. Left ventricular function early after aortic valve replacement for aortic regurgitation: Assessment by gated radionuclide ventriculography
This study characterizes left ventricular performance early after aortic valve replacement for severe isolated aortic regurgitation. Gated radionuclide ventriculography studies in 13 patients showed that left ventricular end-diastolic volume was reduced after surgery and that ejection fraction dropped significantly. Despite the fall in ejection fraction, the
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8. Comparison of radionuclide and contrast ventriculography for detection and quantitation of regions of myocardial ischemia in dogs.
Radionuclide and contrast ventriculography were evaluated for their ability to estimate myocardial ischemia. In 14 closed-chest, sedated dogs, a small and larger region of ischemia were produced by inflating balloon occluders on the left anterior descending coronary artery. The systemic arterial pressure, atrial-paced heart rate, global ejection fraction by
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9. Detection of postinfarction left ventricular aneurysms by first pass radionuclide ventriculography using a multicrystal gamma camera.
Eighteen patients with a history of previous anterior myocardial infarction and suspected left ventricular aneurysms were studied both by contrast left ventriculography and by first pass radionuclide ventriculography using Technetium99m and a computerised multicrystal gamma camera. The radionuclide study successfully identified all 14 patients with aneurysms
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10. Exercise testing without interruption of medication for refining the selection of mildly symptomatic patients for prognostic coronary angiography.
OBJECTIVE--To examine how exercise testing on background medical treatment affects the ability of the test to predict prognostically important patterns of coronary anatomy in patients with a high clinical probability of coronary artery disease but who are well controlled on medication. DESIGN--Prospective study. SETTING--Regional cardiothoracic centre and re
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11. Left Ventricular Functional Assessment by Radionuclide Ventriculography During Isometric Handgrip and Bicycle Exercise in Patients with Aortic Insufficiency
Twelve patients with chronic aortic insufficiency underwent radionuclide ventriculography performed in conjunction with dynamic bicycle and isometric handgrip exercise. Changes in left ventricular ejection fraction (LVEF) during exercise were measured. In all patients, the degree of regurgitation was determined by catheterization, and in eight patients, left
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12. Radionuclide ventriculography in coronary artery disease.