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1.
Anim Microbiome ; 6(1): 5, 2024 Feb 06.
Article in English | MEDLINE | ID: mdl-38321581

ABSTRACT

Genetic selection has remarkably helped U.S. dairy farms to decrease their carbon footprint by more than doubling milk production per cow over time. Despite the environmental and economic benefits of improved feed and milk production efficiency, there is a critical need to explore phenotypical variance for feed utilization to advance the long-term sustainability of dairy farms. Feed is a major expense in dairy operations, and their enteric fermentation is a major source of greenhouse gases in agriculture. The challenges to expanding the phenotypic database, especially for feed efficiency predictions, and the lack of understanding of its drivers limit its utilization. Herein, we leveraged an artificial intelligence approach with feature engineering and ensemble methods to explore the predictive power of the rumen microbiome for feed and milk production efficiency traits, as rumen microbes play a central role in physiological responses in dairy cows. The novel ensemble method allowed to further identify key microbes linked to the efficiency measures. We used a population of 454 genotyped Holstein cows in the U.S. and Canada with individually measured feed and milk production efficiency phenotypes. The study underscored that the rumen microbiome is a major driver of residual feed intake (RFI), the most robust feed efficiency measure evaluated in the study, accounting for 36% of its variation. Further analyses showed that several alpha-diversity metrics were lower in more feed-efficient cows. For RFI, [Ruminococcus] gauvreauii group was the only genus positively associated with an improved feed efficiency status while seven other taxa were associated with inefficiency. The study also highlights that the rumen microbiome is pivotal for the unexplained variance in milk fat and protein production efficiency. Estimation of the carbon footprint of these cows shows that selection for better RFI could reduce up to 5 kg of diet consumed per cow daily, potentially reducing up to 37.5% of CH4. These findings shed light that the integration of artificial intelligence approaches, microbiology, and ruminant nutrition can be a path to further advance our understanding of the rumen microbiome on nutrient requirements and lactation performance of dairy cows to support the long-term sustainability of the dairy community.

2.
Antibiotics (Basel) ; 11(8)2022 Jul 30.
Article in English | MEDLINE | ID: mdl-36009897

ABSTRACT

Mastitis is one of the main contributors to antimicrobial resistance in livestock, so alternative therapies are being investigated to address it. The present study assessed the capability of recombinant bovine interleukin-8 (rbIL-8) to improve neutrophil function in the mammary gland and resolve chronic high somatic cell count (SCC) in Holstein cows. Multiparous cows (n = 8) with more than 300,000 SCC per mL were allocated to one of two intramammary infusions: saline (10 mL of saline solution) or rbIL-8 (1.57 mg/mL of recombinant bovine IL-8 diluted in 9 mL of saline). In addition, there was an untreated control group (n = 2, SCC < 300,000 SCC/mL). Milk samples were collected post-treatment at 0, 4, 8, 12, 24, 48, and 144 h to quantify milk SCC, haptoglobin, and IgG concentrations. Neutrophil's phagocytosis in milk and blood was evaluated via flow cytometry at 0, 24, and 48 h. The log of SCC did not differ between the infused groups (p = 0.369). Neutrophils presented a similar log of cells with high fluorescence for propidium-iodide (PI) and dihydrorhodamine (DHR) in milk (p = 0.412) and blood samples (p = 0.766) in both infused groups. Intramammary infusion of 1.57 mg/mL of rbIL-8 did not improve neutrophils response and failed to resolve chronic high SCC.

3.
Arq Bras Cardiol ; 87(4): e162-7, 2006 Oct.
Article in English, Portuguese | MEDLINE | ID: mdl-17128305

ABSTRACT

The authors review percutaneous coronary intervention (PCI) evolution and its growing application in myocardial revascularization for patients with coronary heart disease in Brazil and worldwide. PCI was introduced in 1977 using only the catheter balloon. Limitations of this method (acute occlusion and coronary restenosis) led to the adoption of coronary stents and more recently the advent of drug-eluting stents2, which were developed to drastically reduce restenosis rates. These developments allowed the exponential growth of percutaneous coronary intervention (PCI) procedures in Brazil which have replaced many bypass surgery procedures and have become the gold standard for the majority of symptomatic patients suffering from coronary artery disease. The preference for this procedure gained new dimensions in 2000 when the Brazilian Public Healthcare System (SUS) began reimbursing for stent procedures. This measure exemplified the importance of the Public Healthcare System's participation in incorporating medical advances and offering a high standard of cardiovascular treatment to a large portion of the Brazilian population. It is emphasized that prevention of in-stent restenosis is complex due to its unpredictable and ubiquitous occurrence. Control of this condition improves quality of life and reduces the recurrence of angina pectoris, the need to perform new revascularization procedures and hospital readmissions. The overall success of the drug-eluting stents has proven to be reliable and consistent in overcoming restenosis and has some beneficial impact for all clinical and angiographic conditions. This paper discusses the adoption and criteria for the use of drug-eluting stents in other countries as well as the recommendations established by the Brazilian Society of Interventional Cardiology for their reimbursement by SUS. The incorporation of new healthcare technology involves two distinct stages. During the first stage, the product is registered with the National Health Surveillance Agency (ANVISA). During this stage the interested company submits to the regulatory agency, results from clinical studies that demonstrate the efficacy and safety of the new device or pharmaceutical product. Frequently, in addition to clinical studies, approval records for clinical use from the regulatory agencies of other countries, mainly the United States of America and the European Community are also submitted. The successful completion of this stage means that the medication or device may be prescribed or used by the physicians in Brazil. The second stage in the incorporation of new healthcare technology involves the reimbursement or financing of the treatment that was approved in the previous stage based on its efficacy and safety. This stage can be more complex than the first one since the new technology, whether a substitution for established treatment methods or the introduction of a new treatment concept, are usually more expensive. The incorporation of new technology requires a cost-effectiveness analysis so that fund administrators can make decisions based on the universal scenario of limited resources to finance healthcare with treatments that are more and more burdensome. The difficulties of funding management are aggravated by medical and social ethical implications that arise when a treatment is approved based on its efficacy and safety but is not made available to patients who could benefit greatly from it. In Brazil, assessment methods for the incorporation of new technology based on reimbursement or financing have not been fully developed for either the private healthcare plans or the Brazilian Public Healthcare System (SUS). The implementation of new technology in both healthcare systems is a slow process and frequently the implementation is a result of the requirements of patients or the organizations that represent them and at times is the result of legal proceedings or political pressure imposed by physicians and their respective scientific societies. Our objective is to review the evolution of percutaneous coronary intervention (PCI) in Brazil and its current status in view of the advent of drug-eluting stents, the growing participation of drug-eluting stents in myocardial revascularization to treat patients with coronary heart disease, as well as, to compare the regulatory standards from Brazil and other countries regarding the incorporation and recommendations for the use of this new technology.


Subject(s)
Angioplasty, Balloon, Coronary/methods , Coronary Disease/surgery , Stents , Brazil , Consensus , Coronary Restenosis/prevention & control , Drug Delivery Systems , Humans , Societies, Medical , Stents/economics
4.
Arq. bras. cardiol ; 87(4): e162-e167, out. 2006. graf
Article in Portuguese, English | LILACS | ID: lil-438259

ABSTRACT

Os autores revisam a evolução da intervenção coronariana percutânea, a sua crescente aplicação na revascularização miocárdica de pacientes portadores de doença arterial coronariana, seja no Brasil, seja no âmbito mundial. Desde a introdução do método, em 1977, com a utilização isolada do cateter-balão, a constatação de que o mesmo tinha limitações (oclusão aguda e reestenose), a adoção dos stents coronarianos e, mais recentemente, o advento dos stents farmacológicos, idealizados para reduzir ainda mais as taxas de reestenose, possibilitaram o crescimento exponencial da aplicação da intervenção coronariana percutânea (ICP) no Brasil, superando a cirurgia de revascularização e tornando-se o tratamento majoritário para enfermos sintomáticos, acometidos de aterosclerose obstrutiva coronariana. Esta preferência se salienta, a partir do ano 2000, após o início do reembolso dos stents pelo Sistema de Unico de Saúde Brasileiro. Este fato demonstra a importância do Sistema Público de Saúde, quando este incorpora os avanços médicos, e passa a oferecer bons padrões de tratamento cardiovascular a grande número de brasileiros. Destaca-se a complexidade da profilaxia da reestenose intra-stent, por sua ocorrência imprevisível e ubíqua. O controle deste fenômeno melhora a qualidade de vida, reduzindo o retorno da angina do peito, a realização de novos procedimentos de revascularização e a re-internação hospitalar. Os stents farmacológicos lograram êxito sólido e consistente na conquista deste objetivo de forma abrangente, beneficiando todas as apresentações clínicas e angiográficas, em maior ou menor grau. Sua adoção e critérios para sua utilização em outros países são discutidos, assim como a formalização das indicações preconizadas pela Sociedade Brasileira de Hemodinâmica e Cardiologia Intervencionista, para o seu reembolso pelo SUS. A incorporação de novas tecnologias em saúde é um processo que compreende duas etapas distintas: na primeira, o registro do produto é efetivado na Agência Nacional de Vigilância Sanitária (ANVISA)...


The authors review percutaneous coronary intervention (PCI) evolution and its growing application in myocardial revascularization for patients with coronary heart disease in Brazil and worldwide. PCI was introduced in 1977 using only the catheter balloon. Limitations of this method (acute occlusion and coronary restenosis) led to the adoption of coronary stents and more recently the advent of drug-eluting stents², which were developed to drastically reduce restenosis rates. These developments allowed the exponential growth of percutaneous coronary intervention (PCI) procedures in Brazil which have replaced many bypass surgery procedures and have become the gold standard for the majority of symptomatic patients suffering from coronary artery disease. The preference for this procedure gained new dimensions in 2000 when the Brazilian Public Healthcare System (SUS) began reimbursing for stent procedures. This measure exemplified the importance of the Public Healthcare System's participation in incorporating medical advances and offering a high standard of cardiovascular treatment to a large portion of the Brazilian population. It is emphasized that prevention of in-stent restenosis is complex due to its unpredictable and ubiquitous occurrence. Control of this condition improves quality of life and reduces the recurrence of angina pectoris, the need to perform new revascularization procedures and hospital readmissions. The overall success of the drug-eluting stents has proven to be reliable and consistent in overcoming restenosis and has some beneficial impact for all clinical and angiographic conditions. This paper discusses the adoption and criteria for the use of drug-eluting stents in other countries as well as the recommendations established by the Brazilian Society of Interventional Cardiology for their reimbursement by SUS. The incorporation of new healthcare technology involves two distinct stages. During the first stage, the product is registered with the National Health Surveillance Agency (ANVISA)...


Subject(s)
Humans , Angioplasty, Balloon, Coronary/methods , Coronary Disease/surgery , Myocardial Revascularization/methods , Stents , Brazil , Coronary Restenosis/prevention & control , Drug Delivery Systems , Societies, Medical , Stents/economics
5.
Arq Bras Cardiol ; 86(3): 181-90, 2006 Mar.
Article in Portuguese | MEDLINE | ID: mdl-16612444

ABSTRACT

OBJECTIVE: This study sought to investigate the influence of Diabetes Mellitus (DM) on immediate results after coronary stenting implantation (CSI) according to clinical presentation. METHODS: Between January, 1997 and December, 2003, 11,874 diabetic patients underwent CSI, as recorded by CENIC database: 7,386 (62.3%) had chronic coronary disease (CCD); 3,142 (26.4%) acute coronary syndrome with non-ST segment elevation (ACSNST); and 1,346 (11.3%), reported acute myocardial infarction (AMI), with ST Segment elevation. Those groups were compared with 48,103 non-diabetics: 30,980 (64.5%) with CCD; 10,938 (22.7%), with non-elevated ST segments and unstable angina; and 6,185 (12.8%), with AMI. RESULTS: Diabetic patients presented worse clinical and angiographic characteristics. Diabetics with CCD showed similar incidence of MACE as compared to non-diabetics (0.98% x 0.91%, p = 0.5971); however, diabetics with ACSNST and AMI reported higher incidence of events: 2.76% x 1.46% (p < 0.0001) and 7.87% x 4.1% (p < 0.0001), respectively. Multivariate analysis showed DM to act as independent risk predictor for larger adverse events under non-elevated ST segment and unstable angina (ACSNST) (OR: 1.92 CI: 1.46-2.52 p < 0.0001) and with AMI (OR: 2.0 CI: 1.57-2.54 p < or = 0.0001) and no influence for CCD (OR: 1.08 CI: 0.83-1.42 p = 0.5470. CONCLUSION: Diabetic patients with CCD reported similar outcome as compared to the non-diabetics; however, those with ACSNST and AMI presented higher incidence of major adverse cardiac events during hospital stay.


Subject(s)
Coronary Disease/surgery , Diabetic Angiopathies/surgery , Stents/adverse effects , Angina, Unstable/mortality , Angina, Unstable/surgery , Brazil/epidemiology , Coronary Disease/etiology , Coronary Disease/mortality , Databases, Factual , Diabetic Angiopathies/mortality , Epidemiologic Methods , Female , Hospital Mortality , Humans , Male , Middle Aged , Myocardial Infarction/mortality , Myocardial Infarction/surgery , Syndrome , Treatment Outcome
6.
Arq. bras. cardiol ; 86(3): 181-190, mar. 2006. tab, graf
Article in Portuguese | LILACS | ID: lil-424260

ABSTRACT

OBJETIVO: Avaliar a influência do diabete melito (DM) nos resultados imediatos do implante de stent coronário (SC), de acordo com o quadro clínico de apresentação. MÉTODOS: Entre janeiro/1997 e dezembro/2003, segundo a Central Nacional de Intervenções Cardiovasculares (CENIC), 11.874 pacientes diabéticos foram submetidos a implante de SC: 7.386 (62,3 por cento) com insuficiência coronária crônica (ICO), 3.142 (26,4 por cento), em síndrome isquêmica instável sem elevação ST (SIASEST) e 1.346 (11,3 por cento), com infarto agudo do miocárdio (IAM) com supradesnivelamento de ST. Estes grupos foram comparados com 48.103 não-diabéticos: 30.980 (64,5 por cento) com ICO, 10.938 (22,7 por cento) em SIASEST e 6.185 (12,8 por cento) com IAM. RESULTADOS: Os diabéticos apresentaram características clínicas e angiográficas de maior risco. Os diabéticos com ICO apresentaram taxa de eventos adversos semelhantes aos não-diabéticos (0,98 por cento x 0,91 por cento, p=0,5971), porém, os diabéticos em SIASEST e IAM apresentaram maior incidência de eventos: 2,76 por cento x 1,46 por cento (p<0,0001) e 7,87 por cento x 4,1 por cento (p<0,0001), respectivamente. A análise multivariada mostrou o DM como preditor independente de risco para eventos adversos maiores na SIASEST (OR: 1,92 IC: 1,46-2,52 p<0,0001) e no IAM (OR: 2,0 IC: 1,57-2,54 p<=0,0001) e não na ICO (OR: 1,08 IC: 0,83-1,42 p=0,5470). CONCLUSÃO: Os pacientes diabéticos portadores de ICO apresentaram evolução hospitalar semelhante aos não diabéticos, porém, os com SIASEST e IAM demonstraram maior taxa de eventos cardíacos adversos comparados com a população não-diabética.


Subject(s)
Female , Humans , Male , Middle Aged , Coronary Disease/surgery , Diabetic Angiopathies/surgery , Stents/adverse effects , Angina, Unstable/mortality , Angina, Unstable/surgery , Brazil/epidemiology , Coronary Disease/etiology , Coronary Disease/mortality , Databases, Factual , Diabetic Angiopathies/mortality , Epidemiologic Methods , Hospital Mortality , Myocardial Infarction/mortality , Myocardial Infarction/surgery , Syndrome , Treatment Outcome
7.
Arq Bras Cardiol ; 83(3): 240-2; 237-9, 2004 Sep.
Article in English, Portuguese | MEDLINE | ID: mdl-15375472

ABSTRACT

OBJECTIVE: To assess stent implantation without previous dilation with a conventional balloon catheter to treat coronary artery obstructions, by using low profile guiding catheters and the transradial approach. METHODS: The transradial approach is attractive due to the possibility of avoiding the trauma caused by the balloon, its shorter time of performance, reduced exposure to radiation, and the use of lower quantities of contrast medium than those usually required in this type of procedure. RESULTS: The initial experience of direct stent implantation with low profile guiding catheters and the transradial approach was analyzed in 45 patients, whose mean age was 65 years. All procedures were successful, with no major complications in the in-hospital phase. CONCLUSION: The results obtained with the population studied proved that the transradial approach is safe, effective, and has very few risks of complications.


Subject(s)
Angioplasty, Balloon, Coronary/methods , Coronary Disease/therapy , Radial Artery , Stents , Aged , Aged, 80 and over , Angioplasty, Balloon, Coronary/instrumentation , Coronary Angiography , Coronary Disease/diagnostic imaging , Feasibility Studies , Female , Humans , Male , Middle Aged , Prospective Studies
8.
Arq. bras. cardiol ; 83(3): 237-242, set. 2004. ilus, tab
Article in English, Portuguese | LILACS | ID: lil-382725

ABSTRACT

OBJETIVO: Avaliar o implante de stents sem dilatação prévia com cateter balão convencional para o tratamento das obstruções coronarianas, utilizando-se cateteres guias de baixo perfil através da técnica radial. MÉTODOS: A técnica radial é atraente pela possibilidade de se evitar o trauma provocado pelo balão, menor tempo para sua realização, exposição reduzida à radiação e consumo de contraste em quantidades inferiores às habitualmente usadas neste tipo de procedimento. RESULTADOS: Analisada a experiência inicial de implante direto de stents, através de cateteres de baixo perfil por via radial, em 45 pacientes, com idade média de 65 anos. Em todos os casos houve sucesso no procedimento sem complicações maiores na fase hospitalar. CONCLUSAO: Os resultados com a população estudada demonstraram ser a técnica radial segura, eficaz e com muito baixo risco de complicações.


Subject(s)
Humans , Male , Female , Middle Aged , Angioplasty, Balloon, Coronary/methods , Coronary Disease/therapy , Radial Artery , Stents , Angioplasty, Balloon, Coronary/instrumentation , Coronary Angiography , Coronary Disease , Feasibility Studies , Prospective Studies
9.
Rev. Soc. Cardiol. Estado de Säo Paulo ; 12(2): 327-333, Mar-Abr. 2002. tab, graf
Article in Portuguese | LILACS | ID: lil-485771

ABSTRACT

A estenose mitral sintomática vem sendo tratada cirurgicamente desde a décaga de 40, e nas últimas duas décadas também por tratamento percutâneo com balões. Os estudos randomizados em que essas opções terapêuticas foram comparadas demonstram qual técnica oferece melhor resultado em um grupo selecionado de pacientes, de acordo com sua apresentação clínica. Três estudos comparando a valvoplastia mitral com balão com a comissurotomia mitral fechada apresentaram melhora significativa e similar tanto do ponto de vista clínico como dos parâmetroshemodinâmicos com os dois procedimentos, à exceção da área valvar mitral, que foi significativamentemaior no grupo tratado por valvoplastia, em um desses estudos. Outra técnica cirúrgica para o tratamento da estenose mitral é a comissurotomia mitral aberta.Estudos randomizados comparando esse tratamento com a valvoplastia mitral com balão revelaram que ambos os procedimentos produzem significativa melhora tanto clínica como hemodinâmica imediata, e após três anos de seguimento. Os resultados foram semelhantes com ambas as técnicas, à exceção da área valvar mitral, que foi significativamente maior no grupo da valvoplastia, em um desses estudos.Um estudo randomizado, com tempo de seguimento de 7 anos, comparando essas 3 técnicas detratamento, demonstrou, da mesma maneira que os anteriormente comentados, que todas as opçõesproduzem significativa melhora. Além disso, reforçou, também, que, em decorrência dos resultados clínicos e hemodinâmicos, do menor custo e da dispensa do uso de circulação extracorpórea, a valvoplastia mitral com cateter-balão é a técnica de escolha para o tratamento da estenose mitral...


Subject(s)
Catheterization , Mitral Valve Stenosis , Rheumatic Diseases
11.
DST j. bras. doenças sex. transm ; 8(1): 29-35, mar. 1996. tab, ilus
Article in Portuguese | LILACS | ID: lil-236103

ABSTRACT

Tomando como referencial teórico a concepção afetivo-cognitiva de atitudes proposta por Fishbein e Ajzen (1975), entrevistas realizadas em 36 mães de portadores e não portadores do HIV definiram 23 conteúdos relacionados ao tratamento, doenças e paciente buscando levantar subsídios para o planejamento de suporte do atendimento domiciliar da Síndrome da Imunodeficiência Adquirida. Análise fatorial pelo Sistema Varimax de Rotação sobre 91 observações com universitários, tomando-se como critério saturações acima de .50 para inclusão de itens e E.V. acima de 1.00 para composição de fatores, isolou sete dimensões relacionadas à versão/Impotência, Formas de Contágio, Resposta Psicológica do Paciente, Apoio/Acompanhamento Clínico, Ambivalência Relação/Tratamento, Oposição/Resistência à Doença, Fuga/Solidão. Com base nestas dimensões, estudos diferenciais entre mães de portadores e não portadores do HIV foram realizados através do teste de Mann-Whitney, com p < .05 como critério de rejeição da hipótese de igualdade. Valores significantes para Fuga/Solidão (Zu= -1.97; P= .04) sugerem que mães de não portadores são mais propensas à crenças sobre o isolamento social decorrente da AIDS. Estudos em separado, de componentes cognitivos e afetivos, indicaram, para Aversão/Impotência, diferenças significantes sobre conteúdos relacionados com a "fé em Deus" (Zu= -2.71; P= .007), sugerindo nas mães de portadores uma perspectiva teleológica frente ao tratamento da AIDS. Além disso, mães de não portadores apresentam cognições mais salientes quanto à necessidade do paciente realizar atividades produtivas, de modo a facilitar o tratamento. Frente tais resultados, algumas perspectivas para o engajamento no tratamento domiciliar da AIDS são analisadas, considerando algumas particularidades diferenciais de mães de pacientes/portadores do HIV, encontradas neste trabalho.


Subject(s)
Humans , Female , Acquired Immunodeficiency Syndrome , Attitude to Health , Carrier State , HIV , Homebound Persons , Mothers , Mothers/psychology , Acquired Immunodeficiency Syndrome/psychology
12.
Arq. bras. cardiol ; 60(1): 35-36, jan. 1993. ilus
Article in Portuguese | LILACS | ID: lil-122209

ABSTRACT

Menino de 6 anos de idade assintomático, foi submetido a estudo radiológico com esôfago contrastado, A compressäo bilateral e posterior do esôfago era sugestiva de anel vascular formado por duplo arco aórtico. O estudo ecocardiográfico, em corte supra-esternal evidenciou achados sugestivos desta malformaçäo. O diagnóstico foi feito pelo estudo cineangiocardiográfico que mostrou duplo arco aótico, com as artérias carótida e subclávia direitas nascendo do arco direito e as artérias carótida e subcláva esquerdas nascendo do arco esquerdo. O arco direito era predominante e a aorta descendente localizava-se à esquerda. Existia também estenose da artéria pulmonar esquerda. Por ser assitnomático, optou-se pelo acompanhamento clínico


Subject(s)
Humans , Female , Child , Pulmonary Artery/physiopathology , Aortic Arch Syndromes/diagnosis , Pulmonary Artery/abnormalities , Cineangiography , Aorta, Thoracic/abnormalities , Constriction, Pathologic , Aortic Arch Syndromes/complications
13.
Arq. bras. cardiol ; 59(6): 471-473, dez. 1992. ilus
Article in Portuguese | LILACS | ID: lil-134489

ABSTRACT

Mulher branca, 53 anos, candidata à cardiomioplastia para controle de insuficiência cardíaca classe III (NYHA), submetida à angioplastia coronária. Apresentava, à cineangiocoronariografia, obstrução de 75% da artéria descendente anterior, hipocinesia difusa e grave de ventrículo esquerdo (fração de ejeção (FE) = 17%). Após sucesso primário da dilatação coronária, foi operada com bom resultado cirúrgico. Após seis meses do ato operatório, apresenta-se bem clinicamente (classe II) e, à cineangiocoronariografia, a artéria descendente anterior apresentava-se sem reestenose ou progressão da doença e a ventriculografia esquerda revelava evidente melhora da junção ventricular (FE = 28%)


A 53 year-old white female candidate to cardiomyoplasty to control heart failure class III (NYHA). Submitted to coronary angioplasty, presented at the coronariography 75% obstruction of the left anterior descending (LAD) artery and at the left ventriculography difuse and severe hypocontractility - ejection fraction (EF) = 17°/a After primary success of the coronary dilatation, she was operated on with a good surgical outcome. Six months after the surgery, she did well clinically (class II) and at the coronariography the LAFD artery presented free from reestenosis or progression of the disease and the left ventriculography showed improvement of the ventricular function (EF= 28)


Subject(s)
Humans , Female , Angioplasty, Balloon, Coronary , Cardiomyopathy, Dilated/therapy , Coronary Disease/therapy , Muscles/transplantation , Pacemaker, Artificial , Thoracic Surgery/methods , Middle Aged , Combined Modality Therapy , English Abstract , Remission Induction
14.
Rev. bras. cir. cardiovasc ; 6(2): 109-15, maio-ago. 1991. ilus, graf
Article in Portuguese | LILACS | ID: lil-164327

ABSTRACT

Os aneurismas ventriculares sao graves complicaçoes dos infartos miocárdicos, levando a diminuiçao da funçao ventricular e elevaçao da morbi-mortalidade. A correçao cirúrgica proposta por COOLEY, em 1958, mudou a evoluçao desta complicaçao. JATENE, em 1985, contribuiu mundialmente com a Reconstruçao Geométrica do Ventrículo Esquerdo, mostrando resultados funcionais superiores e baixa mortalidade. Modificando a técnica de reconstruçao geomética, utilizamos uma prótese semi-rígida de pericárdio bovino duplo com anel de implantaçao de Dacron, do qual se projeta uma aba, também de pericárdio bovino. Apresentada com diâmetros de 19 a 27 mm, conta com um aro radiopaco para identificaçao radiológica. Abrindo-se o aneurisma, a área de transiçao entre o tecido contrátil e a zona fibrótica é delimitada. Sao passados pontos separados em U invertido de poliéster 2-0 com almofadas de Teflon em toda a circunferência de transiçao. Com medidor próprio, avalia-se o colo original a partir do qual o aneurisma se dilatou, estabelecendo-se o diâmetro adequado da prótese. Entao os pontos sao passados no anel de Dacron, reduzindo o colo do aneurisma ao diâmetro do anel, dando ao ventrículo a sua forma original, sem perda de tecido nobre. A sutura contínua da aba de pericárdio bovino, que se projeta do anel, com o tecido fibroso restante complementa a hemostasia. De 16 pacientes submetidos a técnica, ll foram estudados através da "Definiçao das 100 Cordas de Encurtamento". A média da fraçao de ejeçao (Dodge/Kennedy n = O,55 a O,81) pré-operatória foi de O,37 e de O,53 no pós-operatório, aumentando em 43 por cento a funçao ventricular, com boa evoluçao clínica pós-operatória.


Subject(s)
Humans , Heart Aneurysm/surgery , Heart Valve Prosthesis , Heart Ventricles/surgery , Heart Aneurysm/etiology , Stents , Stroke Volume , Surgical Procedures, Operative/methods , Ventricular Function, Left
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