Stenosed Arteries
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. COVID-19 - Endothelial Axis and Coronary Artery Bypass Graft Patency: a Target for Therapeutic Intervention?
Abstract It has been reported that severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection induces endothelial inflammation, therefore facilitating the progression of endothelial and vascular dysfunction in coronavirus disease 2019 (COVID-19) patients. Coronary artery bypass grafting (CABG) involves mainly the use of the saphenous vein (SV) an
Braz. J. Cardiovasc. Surg.. Publicado em: 2020-10
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2. MEASUREMENTS ON THE FLOW OF A HIGHLY SHEAR-THINNING LIQUID PAST AN AXISSYMMETRIC CONTRACTION-EXPANSION: APPLICATION TO BLOOD FLOW THROUGH STENOTIC VESSELS / MEDIÇÕES DO ESCOAMENTO DE UM LÍQUIDO VISCOPLÁSTICO ATRAVÉS DE UMA CONTRAÇÃO-EXPANSÃO AXISSIMÉTRICA: APLICAÇÕES AO ESCOAMENTO DO SANGUE EM ARTÉRIAS COM ESTENOSE
Estenose é uma constrição ou estreitamento de um duto ou de uma passagem. Este termo é usado freqüentemente em referência a constrições que ocorrem em vasos sangüíneos, especialmente em artérias. Um vaso estenótico geralmente causa estagnação do fluxo sangüíneo e portanto a formação de trombos, os quais podem ser bastante pre- judiciais à
Publicado em: 2001
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3. Possible Platelet Thrombi Formation in Dog and Human Femoral Arteries
Atherosclerosis is a ubiquitous condition that commonly produces vessel stenosis and progresses ultimately to vascular occlusion. It is thought by many that platelets collect on sites of atherosclerosis and exacerbate its progression. We have previously shown that platelet thrombi can form within 10 minutes in the stenosed coronary arteries of a dog and can
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4. Localized administration of sodium nitroprusside enhances its protection against platelet aggregation in stenosed and injured coronary arteries.
Sodium nitroprusside, a potent vasodilator, was evaluated for its effect on platelet aggregation in stenosed and endothelium-injured coronary arteries in a canine model. Twenty-five anesthetized dogs were studied; coronary blood flow velocity was continuously monitored. Recurrent intracoronary platelet aggregation and dislodgment (indicated by cyclic variati
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5. Pulmonary atresia with ventricular septal defect and major aortopulmonary collateral arteries. Effect of systemic pulmonary anastomosis.
In nine patients with pulmonary atresia, ventricular septal defect, and major aortopulmonary collateral arteries, the effect of a systemic-pulmonary anastomosis on the lung was studied by comparison of pre- and postoperative cine angiograms. Selective injections into the collateral arteries were performed in all patients and the source of blood supply to eac
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6. Infective endarteritis affecting the left pulmonary artery after anatomical correction of complete transposition of the great arteries.
Clinical features of infective endocarditis developed in a two year old boy. He had successfully undergone anatomical correction of complete transposition of the great arteries during the neonatal period. At routine investigation one year later he showed evidence of important supravalvar pulmonary stenosis. He remained symptom free until endocarditis develop
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7. Evaluation of changes in myocardial perfusion and function on exercise in patients with coronary artery disease by gated MIBI scintigraphy.
OBJECTIVE--To investigate the ability of gated methoxy-isobutylisonitrile (MIBI) scintigraphy to measure changes in myocardial function as well as perfusion with exercise. SETTING--Regional cardiothoracic centre. PATIENTS--43 presenting with chest pain, 28 with coronary artery disease on angiography, and 15 with normal coronary arteriograms. RESULTS--Gated p
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8. Postextrasystolic T wave changes and angiographic coronary disease.
The significance of postextrasystolic T wave changes in beats following induced extrasystoles was assessed by angiography in 55 patients. These T wave changes were found in 81 per cent of coronary artery disease patients but also in 68 per cent of patients with normal coronary arteries (PNS). All patients with normal baseline electrocardiograms and normal co
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9. Effect of stenosed and occluded coronary arteries on immediate and late myocardial uptake of thallium-201.
Exercise and redistribution myocardial scintigraphy using thallium-201 was compared with the left ventricular angiogram and with the presence of stenosis or occlusion of coronary arteries on angiography. Irreversible scintigraphic defects representing areas of myocardial infarction were found in all patients with occlusion of the left anterior descending art
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10. The watershed: a factor in coronary vein graft occlusion.
In 50 patients with one or more aortocoronary saphenous vein grafts investigated by angiography the patency rate of grafts inserted into arteries with a total proximal occlusion was significantly higher than of those inserted into arteries with a proximal stenosis. The interval between operation and investigation in the two groups was similar. In 10 patients
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11. Atherosclerosis influences the vasomotor response of epicardial coronary arteries to exercise.
We studied the vasomotion of epicardial coronary arteries during exercise and tested the hypotheses that abnormal vasoconstriction is related to the presence of atherosclerosis and may be related to endothelial dilator dysfunction. During cardiac catheterization quantitative coronary angiography was performed in 21 patients during supine bicycle exercise. 21
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12. Transthoracic Doppler echocardiography – noninvasive diagnostic window for coronary flow reserve assessment
This review focuses on transthoracic Doppler echocardiography as noninvasive method used to assess coronary flow reserve (CFR) in a wide spectrum of clinical settings. Transthoracic Doppler echocardiography is rapidly gaining appreciation as popular tool to measure CFR both in stenosed and normal epicardial coronary arteries (predominantly in left anterior d
BioMed Central.