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Search Results: 1 - 10 of 463453 matches for " Raul Feck A;Nesralla "
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Tratamento cirúrgico para ectasia anulo-aórtica
García-Macedo, Ricardo;Kalil, Renato A. K;Prates, Paulo Roberto;Lucchese, Fernando A;Sant'Ana, Jo?o Ricardo;Pereira, Edemar M;Costa, Altamiro Reis;Lara, Raul Feck A;Nesralla, Ivo A;
Revista Brasileira de Cirurgia Cardiovascular , 1986, DOI: 10.1590/S0102-76381986000100007
Abstract: this is a report of 27 patients presenting annulo-aortic ectasia submitted to surgical correction with a composite valve-tube graft (bentall-de bono technique), between 1976 and 1985. twenty three (85.2%) had cystic medial necrosis, 3 (11,1%) were chronic aortic disections and 1 (3.7%) was luetic aortitis. age ranged from 29 to 64 years (m = 48). three were female and 24 male patients. the valves used were homologous dura maier in 7 cases, heterologous aorta in 9 and mechanical prosthesis in 11. functional class (nyha) was i-ii in 7 and iii-iv in 9 patients. there was 1 (3.7%) hospital death, due to bleeding and renal failure. significant early complications were represented by arrhythmias in 13 cases (48%) and bleeding in 3 (11%). in the late follow-up therev.were 9 deaths, due to: sudden death (2 patients, 7.4%), bleeding in reoperation (1 patient, 3.7%), hospital infection (1 patient, 3.7%), infectious endocarditis (1 patient, 3.7%) and accidental causes (2 patients, 7.4%). five patients (18.5%) needed reoperation in the late follow-up: 2 due to bioprosthetic failure, 2 for replacement of an infected dacron tube and 1 for repair of pseudo-aneurysm and periprosthetic leak. the actuarial survival curve showed a probability of 83.7% up to the 3rd. year, 61 % for the 5th. year and 42.7% from the 6th. to the 9th. year of follow-up. the 17 patients surviving are in functional class i-ii (nyha). the composite valve-dacron tube graft (bentall-de bono) technique for correction of annulo-aortic ectasia is associated with a low hospital mortality. the improvement in functional class is significant. there have been a small number of complications and the long term survival is very satisfactory.
Reopera??es após cirurgia de Bentall-De Bono para ectasia anulo-aórtica
Kalil, Renato A. K;Garcia-Macedo, Ricardo;Prates, Paulo Roberto;Lucchese, Fernando A;Sant'Anna, Jo?o Ricardo;Lara, Raul F. A;Costa, Altamiro R;Daudt, Nestor S;Pereira, Edemar M;Nesralla, Ivo A;
Revista Brasileira de Cirurgia Cardiovascular , 1988, DOI: 10.1590/S0102-76381988000200003
Abstract: a major surgical problem is imposed when late complications occur in patients submitted previously to aortic root replacement by the bentall-de bono technique. during an 11 years period, from january 1976 to december 1986, 37 patients had aortic root replacement with valved conduits and 5 presented late complications (13.5%) requiring a new operation. the lesions were: biological valve degeneration, infective endocarditis and suture leaks leading to pseudo aneurysm, peritubular leakage and hemolysis. there was 1 systemic embolization with an infected vegetation. the 5 patients were re-operated, with 1 surgical death (20%), in a case presenting fungal endocarditis (aspergillus), due to uncontroled bleeding. the remaining 4 had an uneventful hospital course. there was 1 late death during a surgical exploratory thoracic procedure. the remaining 3 patients enjoy a normal active life. one of these still has a small peritubular leakage causing mild aortic regurgitation and hemolysis. the surgical procedure consisted of dacron tube replacement preserving the implanted valve prostheses in the 2 cases with infective endocarditis. two ruptures biological valves were replaced by methalic disc valves. in this situation, the dacron tubes were preserved and the valves approached through a longitudinal incision in the tube. the suture leaks were corrected with direct isolated mattress sutures. late re-operations may be required after aortic root replacement with composite valve-tube grafts. they can be performed at an acceptable surgical risk. the technique should be as conservative as possible and directed to the causing lesions, preserving the remaining structures. a methalic prosthesis should be the first choice for the primary procedure, in order to avoid late tissue degeneration.
Proposi??o de técnica endocavitária para remodelamento ventricular esquerdo
NESRALLA, Ivo A.;SANT'ANNA, Jo?o Ricardo M.;PRATES, Paulo R.;TEIXEIRA FILHO, Guaracy F.;WENDER, Orlando;COSTA, Altamiro R.;SANTOS, Marisa S.;PEREIRA, Edemar M.;LARA, Raul F.;SANTOS, Ari Tadeu;
Revista Brasileira de Cirurgia Cardiovascular , 1997, DOI: 10.1590/S0102-76381997000200008
Abstract: left ventricular remodeling by partial ventriculectomy is a recent proposition for palliation in dilated cardiomyopathy when cardiac transplantation is contraindicated. this procedure carries a high morbimortality due to myocardial ischemia, necrosis and arrhythmias. this paper presents a technique for endocavitary left ventricular remodeling which maintains the hearts morpho-functional architecture without myocardial resection. under extracorporeal circulation and hypothermic cardioplegia, a left atriotomy is done, the anterior mitral leaflet removed and a triangular shaped bovine pericardial graft (aproximately 2 x 6 x 6 cm) is implanted inside the left ventricular cavity with 3-0 polipropilene anclosed in dacron felt. the graft is sutured in a divergent way from the apex to the mitral ring, at the middle of the septum and at the posterior papillary muscle. this produces an internal plication with ventricular cavity reduction. myocardium and coronary circulation are preserved. the base of the triangular graft is sutured to the mitral annulus and the mitral bioprosthesis is implanted. the procedure was employed in 8 patients with dilated cardiomyopathy, not candidates to transplantation, 2 females and 6 males, ranging from 24 to 58 years. five had mitral regurgitation. all were in hospital, at class iv (nyha). mortality was 25% (2 cases): 1 in the hospital and 1 at 3 months p.o. the table shows the echocardiographic parameters for lv function: pré-operative post-operative cardiac output (l/min) 2,6 ± 0,4 3,8 ± 0,7 p<0,001 cardiac index 1,9 ± 0,9 2,7 ± 0,6 p<0,005 ejection fraction 21,5 ± 4,0 37,8 ± 1,2 p<0,05 intracavitary left ventricular remodeling presented a satisfactory result related to mortality and morbidity, with functional improvement over the short term. longer follow-up is needed to evaluate its role, which might be a bridge to transplantation. a limitation exists in the necessity for replacing the mitral valve.
A importancia de medidas preventivas na profilaxia de infec??es em pacientes submetidos a transplante cardíaco nos primeiros 30 dias de pós-operatório
Boaz, Marta Regina;Bordignon, Solange;Nesralla, Ivo A;
Revista Brasileira de Cirurgia Cardiovascular , 2006, DOI: 10.1590/S0102-76382006000200012
Abstract: objective: to describe the rate of infections presented by patients submitted to heart transplant during the first thirty days after surgery, in respect to the topography and etiological agent and to compare the rate of infection during the immediately postoperative period with the preventive measures adopted by infection control. methods: a retrospective study was made of a population consisting of 125 patients submitted to heart transplant from june 1984 to january 2004. data were collected by analyzing the patients' records following a specific investigative sequence. the ages of the patients ranged from 9 days to 71 years old, with a median of 47 years. there was a predominance of men (75.2%). results: during the first thirty postoperative days, 32.8% of the patients presented with infections. there were predominantly bacterial infections (32%), followed by fungal infections (5.6%) and those caused by viruses (4%). no difference was observed in the rate of infection comparing two situations: (1) in nursing care of patients using protective isolation (29.9%); and (2) without protective isolation (36.2%) ( p = 0.835). conclusion: bacterial infections predominated followed by fungal and viral infections. the protective isolation initially used in post-heart transplant patients proved unnecessary as a measure to prevent or reduce rates of infection, confirming data obtained mainly in north american studies. these data are useful to guide protocols as they take specificities of our environment into account.
MOSES – A modelling tool for the analysis of scenarios of the European electricity supply system
Weitemeyer S.,Feck T.,Agert C.
EPJ Web of Conferences , 2012, DOI: 10.1051/epjconf/20123301002
Abstract: Recent studies have shown that a transition of the current power supply system in Europe to a system almost entirely based on fluctuating Renewable Energy Sources (RES) by mid-century is possible. However, most of these scenarios require a significant amount of back-up power capacities to ensure the security of electricity supply. This would imply high additional investments and operating costs. Hence, alternative options should be investigated first. Here we present a first outlook of our simulation model MOSES which will be able to analyse different target states of the European electricity system in 2050. In this model long-term meteorological data series are used to optimise the capacity mix of RES in Europe. One of the main elements of our tool is a simplified electricity network. In addition, alternative options for reduction of additional back-up power like the expansion of the transmission grid, the use of demand-side management and/or the installation of over-capacities will be implemented. The results will be used to provide scientifically proven recommendations to policy makers for a reliable energy supply system in Europe based on Renewable Energy Sources.
Aparência física e amizade íntima na adolescência: Estudo num contexto pré-universitário
Cordeiro,Raul A.;
Análise Psicológica , 2006,
Abstract: the present study approaches the association among the perception about the physical appearance and the intimate friendship, considering them as a factor of important predictive value in the adolescents psychosocial development. a group of enrolled students in the 12th year of education, was asked to answer a direct application questionnaire containing the following measures: intimate friendship scale (sharabany, 1994), the self-perception profile for college students (neemann & harter, 1986) adapted for the portuguese population (ribeiro, 1994) and family social notation - adapted graffar, adapted of the original (graffar, 1956). the values of intimate friendship are higher for girls and the values of perception on the physical appearance are higher for boys. the values of the perception on the physical appearance suggest a different valorization among sexes of the physical self-concept and intimate friendship aspects in the adolescents? social and personal adaptation.
Revista chilena de pediatría , 1949,
Asfixia del recién nacido
Revista chilena de pediatría , 1947,
Pruebas intravenosas de tolerancia a los hidratos de carbono en el ni o
Revista chilena de pediatría , 1949,
Eritroblastosis fetal
Revista chilena de pediatría , 1943,
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