Aortic Prostheses
Mostrando 25-36 de 60 artigos, teses e dissertações.
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25. Ultrasonic decalcification of calcified valve and annulus during heart valve replacement.
A heavily calcified heart valve annulus increases the likelihood of sequelae after prosthetic valve replacement. Such sequelae include cerebral embolism, paravalvular leakage, valvular dysfunction, rhythm disturbance, hemolysis, communication of the heart chambers, and rupture of the posterior wall of the left ventricle. From January 1991 through June 1994,
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26. NEW MITRAL AND AORTIC VALVE PROSTHESES: DESIGN AND CLINICAL RESULTS
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27. A technique for complete replacement of the ascending aorta
A technique for complete replacement of the aortic valve and ascending aorta in cases of aneurysm of the ascending aorta with aortic valve ectasia is described. The proximal aortic root was too attenuated to afford anchorage to the aortic prosthesis, so this was sutured to the ring of a Starr valve and the prostheses were inserted en bloc. The ostia of the c
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28. Functional results with aortic ball valve prostheses (Starr-Edwards) followed for two to three years.
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29. Chronic intravascular haemolysis after aortic disc valve replacement. Comparative study between Lillehei-Kaster and Björk-Shiley disc valve prostheses.
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30. Design and construction of fascia lata aortic valve prostheses
Current techniques for constructing fascia lata aortic valves result in a valve in which redundant cusp tissue is inadvertently incorporated in the proximal part of the cusp. This alters the flow character of the valve and produces a significant stenosis. An alternative technique, based on the normal anatomy of the aortic valve, is suggested which eliminates
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31. Haemodynamic changes in patients with high pulmonary vascular resistance after mitral valve replacement. Comparative study between use of unstented aortic homograft valves and Starr-Edwards prostheses.
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32. Right Ventricular and Septal Anomalies Complicated by Subacute Bacterial Endocarditis
We report the case of a 31-year-old woman with no history of heart disease. She came to the hospital with fever, dyspnea, palpitation, and edema of the lower extremities. She was found to have aortic, mitral, and pulmonary valve insufficiency, and the initial diagnosis was subacute bacterial endocarditis. At surgery, we replaced the aortic and mitral valves
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33. Assessment of relative actions of beta-adrenergic blocking drugs on heart rate and left ventricular ejection using a non-invasive method in patients with aortic Starr-Edwards prostheses.
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34. Heterograft aortic valve replacement: initial follow-up studies
Twenty-three patients have had calf or pig heterograft aortic valve replacements. Eight of these patients have required Starr-Edwards mitral ball-valve prostheses for associated mitral valve disease. There have been two hospital deaths and one late death. The 20 surviving patients have shown symptomatic improvement. Clinical evidence of incompetence is prese
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35. Disc erosion in Models 103 and 104 of Beall mitral valve prostheses
Three cases of severe disc variance and erosion of the Teflon-disc Beall mitral valve prosthesis (Models 103 and 104) are reported. In two patients, the Beall mitral valves were excised and replaced with two Björk-Shiley mitral valves. The remaining patient did not survive, and at autopsy, the lens was found at the aortic bifurcation level. Because of this
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36. Asymptomatic Strut Fracture in DeBakey-Surgitool Aortic Valves: Incidence, Management, and Metallurgic Aspects
From August 1971 through November 1972, we implanted 62 Model 2 DeBakey-Surgitool aortic valve prostheses in 62 patients, 4 of whom later had clinically asymptomatic strut fractures. In 1 case, the patient died suddenly, and autopsy revealed detachment of the ball-cage; in each of the other 3 cases, fractures of 2 struts close to the base of the prosthesis w