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1.
Preprint in Portuguese | SciELO Preprints | ID: pps-8812

ABSTRACT

Introduction: Recent progress in the bioengineering of cardiac grafts offers a new therapeutic modality for the regeneration of cardiac tissue after myocardial infarction. CD34 is a marker that expresses all hematopoietic and endothelial precursor cells, and functions as a cell adhesion factor. The antibody corresponding to this marker is used in immunohistochemistry to evaluate the formation of new vessels and the presence of stem cells. Objective: To evaluate the effectiveness of omentopexy in neovascularization and stem cells. Methods: Review collecting information published on selected virtual platforms (SciELO ­ Scientific Electronic Library Online, Google Scholar, Pubmed and Scopus). The search began with descriptors related to the topic, identified through DeCS/MESH in the following: "myocardial ischemia; myocardial revascularization; omentopexy; immunohistochemistry; CD34; stem cells". They were read by title and summary, with an AND or OR search followed by the full reading of those most closely related to the topic. A total of 23 articles were included. Results: The greater omentum has a remarkable clinical property in containing sites of tissue damage. It increases its tissue volume in response to foreign and inflammatory particles involving several immunomodulatory cells with progenitor cells, in a process called "omentum activation". Conclusion: Cardio-omentopexy associated with mechanical abrasion and myocardial perforations proves to be efficient in inducing neovascularization. The greater omentum promotes stem cells - confirmed by CD34 -, demonstrating great potential as a future therapy to restore areas of ischemic myocardium.


Introdução: Recentes progressos feitos na bioengenharia de enxertos cardíacos oferecem nova modalidade terapêutica para a regeneração do tecido cardíaco pós-infarto do miocárdio. O CD34 é marcador que expressa todas as células precursoras hematopoiéticas e endoteliais, e funciona como fator de adesão celular. O anticorpo que correspondente a este marcador é utilizado na imunoistoquímica para avaliar a formação de novos vasos e a presença de células-tronco. Objetivo: Avaliar a eficácia da omentopexia na neovascularização e células-tronco. Métodos:  Revisão colhendo informações publicadas em plataformas virtuais selecionadas (SciELO ­ Scientific Electronic Library Online, Google Scholar, Pubmed e Scopus).  A busca iniciou-se por descritores relacionados ao tema, identificados por meio do DeCS/MESH nos seguintes descritores: "isquemia miocárdica; revascularização miocárdica; omentopexia; imunoistoquímica; CD34; células-tronco" e seus equivalentes em inglês: "stem cell; myocardial ischemia; myocardial revascularization; omentopexy; immunohistochemistry; CD34". Foram lidos pelo título e resumo, com busca AND ou OR seguindo-se da leitura na íntegra daqueles com maior relação ao tema. Foram incluídos o total de 23 artigos. Resultados: O omento maior tem propriedade clínica marcante em conter sítios de danos teciduais. Ele aumenta seu volume tecidual em resposta às partículas estranhas e inflamatórias envolvendo diversas células imunomoduladoras com células progenitoras, em um processo chamado "ativação do omento". Conclusão: A cárdio-omentopexia associada à abrasão mecânica e perfurações miocárdicas, mostra ser eficiente na indução de neovascularização. O omento maior promove células-tronco - confirmadas pelo CD34 -, demonstrando grande potencial como futura terapêutica para restaurar áreas de miocárdio isquêmico.

2.
Rev Port Cardiol ; 43(7): 389-396, 2024 Jul.
Article in English, Portuguese | MEDLINE | ID: mdl-38401705

ABSTRACT

INTRODUCTION AND OBJECTIVES: Three-dimensional (3D) model simulation provides the opportunity to manipulate real devices and learn intervention skills in a realistic, controlled, and safe environment. To ensure that simulators provide a realistic surrogate to real procedures they must undergo scientific validation. We aimed to evaluate the 3D-printed simulator SimulHeart® for face and content validity to demonstrate its value as a training tool in interventional cardiology (IC). METHODS: Health professionals were recruited from sixteen Portuguese IC units. All participants received a 30-minute theoretical introduction, 10-minute demonstration of each task and then performed the intervention on a 3D-printed simulator (SimulHeart®). Finally, a post-training questionnaire focusing on the appearance of the simulation, simulation content, and satisfaction/self-efficacy was administered. RESULTS: We included 56 participants: 16 "experts" (general and interventional cardiologists), 26 "novices" (cardiology residents), and 14 nurses and allied professionals. On a five-point Likert scale, the overall mean score of face validity was 4.38±0.35 and the overall mean score of content validity was 4.69±0.32. There was no statistically significant difference in the scores provided by "experts" and "novices". Participants reported a high level of satisfaction/self-efficacy with 60.7% considering it strongly improved their skills. The majority (82.1%) "agreed" or "strongly agreed" that after the simulation they felt confident to perform the procedure on a patient. CONCLUSION: The 3D-printed simulator (SimulHeart®) showed excellent face and content validity. 3D simulation may play an important role in future IC training programs. Further research is required to correlate simulator performance with clinical performance in real patients.


Subject(s)
Cardiology , Printing, Three-Dimensional , Simulation Training , Humans , Cardiology/education , Simulation Training/methods , Male , Female , Reproducibility of Results , Adult
5.
Cult. cuid ; 27(67): 429-454, Dic 11, 2023. tab
Article in Portuguese | IBECS | ID: ibc-228595

ABSTRACT

The objective is to describe home patient care plans after myocardial revascularization (MR) based on the Mid-Range Nursing Theory for Cardiovascular Rehabilitation (TMA Enf-RCV). This is a multiple case study in which data collection was performed at the home of seven patients in the postoperative period of MRI, in Sobral-Ceará, between June and December 2019. The information collected was organized in individual reports and then, joint analytical synthesis was performed. The assessment of rehabilitating behavior and stimulus for cardiovascular rehabilitation (CVR) involved physiological adaptive problems, self-concept, role performance and interdependence, with 50% of nursing diagnoses focusing on problems and being associated with the physiological mode and57% of health promotion diagnoses were related to self-concept mode. The nursing rehabilitation intervention included the promotion of physical exercises, encouragement of the patient and family in care, education about adaptive strategies, psychosocial support, among others. This study supports the applicability of TMA Enf-RCV as an effective intervention for CVR with a focus on quality of life.(AU)


El objetivo es describir los planes de atención domiciliaria del paciente después de la revascularización miocárdica (RM) basados en la Teoría de Enfermería de Rango Medio para la Rehabilitación Cardiovascular (TMA Enf-RCV). Se trata de un estudio de caso múltiple en el que la recogida de datos se realizó en el domicilio de siete pacientes en el postoperatorio de RM, en Sobral-Ceará, entre junio y diciembre de 2019. La información recogida se organizó en informes individuales y luego, se realizó la síntesis analítica conjunta. La evaluación de la conducta rehabilitadora y el estímulo para la rehabilitación cardiovascular (RCV) involucró problemas fisiológicos adaptativos, autoconcepto, desempeño de roles e interdependencia, con un 50% de los diagnósticos de enfermería centrados en problemas y asociados con el modo fisiológico y un 57% de los diagnósticos de promoción de la salud se relacionaron con el modo de autoconcepto. La intervención de rehabilitación de enfermería incluyó la promoción de ejercicios físicos, el estímulo del paciente y la familia en el cuidado, educación sobre estrategias adaptativas, apoyo psicosocial, entre otros. Este estudio respalda la aplicabilidad de TMA Enf-RCV como una intervención eficaz para el RCV con un enfoque en la calidad de vida.(AU)


Objetivase descrever planos de cuidados de pacientes em domicílio após revascularização miocárdica (RM) fundamentados na Teoria de Enfermagem de Médio Alcance para Reabilitação Cardiovascular (TMA Enf-RCV). Tratase de um estudo de casos múltiplo no qual a coleta de dados realizouse no domicílio de sete pacientes em pós-operatório de RM, em Sobral-Ceará, entre junho e dezembro de 2019. As informações coletadas foram organizadas em relatórios individuais e em seguida, realizada síntese analítica conjunta. A avaliação do comportamento reabilitador e estímulo para reabilitação cardiovascular (RCV) envolveram pro-blemas adaptativos fisiológicos, de autoconceito, de desempenho de papel e de interdependência, sendo que 50% dos diagnósticos de enfermagem tinham foco nos problemas e se associaram ao modo fisiológico e 57%dos diagnósticos de promoção da saúde foram referentes ao modo autoconceito. A intervenção reabilitadora de enfermagem contemplou promoção de exercícios físicos, encorajamento do paciente e da família no cuidado, educação acerca de estratégias adaptativas, suporte psicossocial, dentre outros. Este estudo subsidia a aplicabilidade da TMA Enf-RCV como intervenção efetiva para a RCV com foco na qualidade de vida.(AU)


Subject(s)
Humans , Male , Female , Nursing Theory , Myocardial Revascularization/rehabilitation , Cardiac Rehabilitation/nursing , House Calls , Quality of Life , Nursing , Nursing Care , Rehabilitation Services
6.
Rev Port Cardiol ; 42(6): 529-539, 2023 06.
Article in English, Portuguese | MEDLINE | ID: mdl-36958582

ABSTRACT

BACKGROUND: In acute coronary syndromes (ACS), the optimal revascularization strategy for unprotected left main coronary artery (ULMCA) culprit lesion has been under-investigated. Therefore, we compared clinical characteristics and short- and medium-term outcomes of percutaneous and surgical revascularization in ACS. METHODS AND RESULTS: Of 31886 patients enrolled in a multicenter, national, prospective registry study between October 2010 and December 2020, 246 (0.8%) had ULMCA as a culprit lesion and underwent percutaneous coronary intervention (PCI) alone (n=133, 54%) or coronary artery bypass grafting (CABG) alone (n=113, 46%). Patients undergoing PCI presented more frequently ongoing chest pain (68% versus 41%, p<0.001) and cardiogenic shock (25% versus 1%, p<0.001). Time from admission to revascularization was higher in surgical group with a median time to CABG of 4.5 days compared to 0 days to PCI (p<0.001). Angiographic success rate was 93.2% in patients who underwent PCI. Primary endpoint (all-cause death, non-fatal reinfarction and/or non-fatal stroke during hospitalization) occurred in 15.9% of patients and was more frequent in the PCI group (p<0.001). After adjustment, surgical revascularization was associated with better in-hospital prognosis (odds ratio (OR) 0.164; 95% confidence interval (CI), 0.04-0.64; p=0.009). Similar results were achieved after propensity score matching. No difference was found at one-year all-cause death. CONCLUSION: Percutaneous coronary intervention was the most common revascularization strategy in the ACS with ULMCA culprit lesion. PCI was preferred in unstable patients and presented a high angiographic success. CABG was often delayed and preferred in low-risk patients. At one-year follow-up, PCI and CABG conferred a similar prognosis. The two approaches appear complementary in this high risk cohort.


Subject(s)
Acute Coronary Syndrome , Coronary Artery Disease , Drug-Eluting Stents , Percutaneous Coronary Intervention , Humans , Coronary Artery Disease/etiology , Percutaneous Coronary Intervention/methods , Acute Coronary Syndrome/surgery , Acute Coronary Syndrome/etiology , Portugal , Treatment Outcome , Registries , Risk Factors
7.
Rev Port Cardiol ; 42(6): 519-524, 2023 06.
Article in English, Portuguese | MEDLINE | ID: mdl-36893839

ABSTRACT

INTRODUCTION: Patients with angina and a positive single-photon emission computed tomography (SPECT) scan for reversible ischemia, with no or non-obstructive coronary artery disease (CAD) on invasive coronary angiography (ICA), represent a frequent clinical problem and predicting prognosis is challenging. METHODS: This was a retrospective single-center study on patients who underwent elective ICA with angina and a positive SPECT with no or non-obstructive CAD over a seven-year period. Cardiovascular morbidity, mortality, and major adverse cardiac events were assessed during a follow-up of at least three years after ICA, with the aid of a telephone questionnaire. RESULTS: Data on all patients who underwent ICA in our hospital over a period of seven years (between January 1, 2011 and December 31, 2017) were analyzed. A total of 569 patients fulfilled the pre-specified criteria. In the telephone survey, 285 (50.1%) were successfully contacted and agreed to participate. Mean age was 67.6 (SD 8.8) years (35.4% female) and mean follow-up was 5.53 years (SD 1.85). Mortality was 1.7% (four patients, from non-cardiac causes), 1.7% underwent revascularization, 31 (10.9%) were hospitalized for cardiac reasons and 10.9% reported symptoms of heart failure (no patients with NYHA class>II). Twenty-one had arrhythmic events and only two had mild anginal symptoms. It was also noteworthy that mortality in the uncontacted group (12 out of 284, 4.2%), derived from public social security records, did not differ significantly from the contacted group. CONCLUSIONS: Patients with angina, a positive SPECT for reversible ischemia and no or non-obstructive CAD on ICA have excellent long-term cardiovascular prognosis for at least five years.


Subject(s)
Coronary Artery Disease , Myocardial Perfusion Imaging , Humans , Female , Aged , Male , Coronary Artery Disease/complications , Coronary Artery Disease/diagnostic imaging , Retrospective Studies , Coronary Angiography , Prospective Studies , Tomography, Emission-Computed, Single-Photon/methods , Ischemia , Perfusion , Myocardial Perfusion Imaging/methods
8.
Rev Port Cardiol ; 42(5): 445-451, 2023 05.
Article in English, Portuguese | MEDLINE | ID: mdl-36706913

ABSTRACT

INTRODUCTION: The benefit of complete revascularization (CR) on long-term total event reduction in patients with ST-segment elevation myocardial infarction (STEMI) and multivessel disease (MVD), still remains unclear. We assessed the efficacy of three different revascularization strategies on long-term total recurrent events. METHODS: We retrospectively analyzed 414 consecutive patients admitted with STEMI and MVD who were categorized according to the revascularization strategy used: culprit-vessel-only percutaneous coronary intervention (PCI) (n=163); in-hospital CR (n=136); and delayed CR (n=115). The combined endpoint assessed was all-cause mortality, the total number of myocardial infarctions, ischemia-driven revascularizations or strokes. Negative binomial regression was used to assess the association between the revascularization strategy and total events; risk estimates were expressed as an incidence rates ratio (IRR). RESULTS: At a median follow-up of four years (1.2-6), rates of the combined endpoint per 10 patient-years were 18, 0.8, and 0.6 in culprit-vessel-only PCI, in-hospital CR, and delayed CR strategies, respectively (p<0.001). After multivariable adjustment and when compared with culprit-vessel-only PCI, both in-hospital and delayed CR strategies were significantly associated with a reduction in the combined endpoint (IRR=0.40: 95% confidence interval (CI), 0.25-0.64; p<0.001; and IRR 0.40: 95% CI, 0.24-0.62; p<0.001, respectively). No differences were observed across in-hospital and delayed CR strategies. CONCLUSIONS: Complete revascularization of non-culprit lesions in patients with STEMI and MVD reduces the risk of total recurrent events during long-term follow-up. No differences between in-hospital and delayed CR strategies were found.


Subject(s)
Coronary Artery Disease , Myocardial Infarction , Percutaneous Coronary Intervention , ST Elevation Myocardial Infarction , Humans , ST Elevation Myocardial Infarction/surgery , ST Elevation Myocardial Infarction/etiology , Coronary Artery Disease/etiology , Retrospective Studies , Percutaneous Coronary Intervention/adverse effects , Myocardial Infarction/etiology , Treatment Outcome , Myocardial Revascularization
9.
Arq. bras. cardiol ; 120(7): e20220479, 2023. tab, graf
Article in Portuguese | LILACS-Express | LILACS | ID: biblio-1447305

ABSTRACT

Resumo Fundamento A doença arterial coronariana (DAC) devido à isquemia miocárdica causa perda permanente de tecido cardíaco. Objetivos Nosso objetivo foi demonstrar o possível dano ao miocárdio em nível molecular através dos mecanismos de autofagia e apoptose em pacientes submetidos à cirurgia de revascularização miocárdica. Métodos Um grupo recebeu uma solução de cardioplegia Custodiol e o outro grupo uma solução de cardioplegia sanguínea. Duas amostras miocárdicas foram coletadas de cada paciente durante a operação, imediatamente antes da parada cardíaca e após a liberação do pinçamento aórtico. Foram avaliadas as expressões de marcadores de autofagia e apoptose. O nível de significância estatística adotado foi de 5%. Resultados A expressão do gene BECLIN foi significativa nos tecidos miocárdicos do grupo CS (p=0,0078). Os níveis de expressão dos genes CASPASE 3, 8 e 9 foram significativamente menores no grupo CC. Os níveis pós-operatórios de TnT foram significativamente diferentes entre os grupos (p=0,0072). As expressões dos genes CASPASE 8 e CASPASE 9 foram semelhantes antes e depois do pinçamento aórtico (p=0,8552, p=0,8891). No grupo CC, os níveis de expressão gênica de CASPASE 3, CASPASE 8 e CASPASE 9 não foram significativamente diferentes em amostras de tecido coletadas após pinçamento aórtico (p=0,7354, p=0,0758, p=0,4128, respectivamente). Conclusões Com nossos achados, acreditamos que as soluções CC e CS não apresentam diferença significativa em termos de proteção miocárdica durante as operações de by-pass.


Abstract Background Coronary artery disease (CAD) due to myocardial ischemia causes permanent loss of heart tissue. Objectives We aimed to demonstrate the possible damage to the myocardium at the molecular level through the mechanisms of autophagy and apoptosis in coronary bypass surgery patients. Methods One group was administered a Custodiol cardioplegia solution, and the other group was administered a Blood cardioplegia solution. Two myocardial samples were collected from each patient during the operation, just before cardiac arrest and after the aortic cross-clamp was released. The expressions of autophagy and apoptosis markers were evaluated. The level of statistical significance adopted was 5%. Results The expression of the BECLIN gene was significant in the myocardial tissues in the BC group (p=0.0078). CASPASE 3, 8, and 9 gene expression levels were significantly lower in the CC group. Postoperative TnT levels were significantly different between the groups (p=0.0072). CASPASE 8 and CASPASE 9 gene expressions were similar before and after aortic cross-clamping (p=0.8552, p=0.8891). In the CC group, CASPASE 3, CASPASE 8, and CASPASE 9 gene expression levels were not found to be significantly different in tissue samples taken after aortic cross-clamping (p=0.7354, p=0.0758, p=0.4128, respectively). Conclusions With our findings, we believe that CC and BC solutions do not have a significant difference in terms of myocardial protection during bypass operations.

10.
Acta Paul. Enferm. (Online) ; 36: eAPE010731, 2023. tab, graf
Article in Portuguese | LILACS-Express | LILACS, BDENF - Nursing | ID: biblio-1439051

ABSTRACT

Resumo Objetivo Analisar o conteúdo e usabilidade de um protótipo de aplicativo móvel para apoiar a educação do paciente no pré-operatório de revascularização miocárdica. Métodos Estudo metodológico, quantitativo, baseado no referencial design instrucional contextualizado. Na etapa de análise realizou-se revisão de escopo e um estudo qualitativo com 13 pacientes com a finalidade de identificar o conteúdo para compor o aplicativo. Na etapa de design e desenvolvimento estruturou-se o conteúdo. Durante a implementação, procedeu-se a configuração dos recursos e, na avaliação, utilizou-se a técnica Delphi, com a avaliação do conteúdo a partir dos critérios de Pasquali e a usabilidade do aplicativo por meio do ERGOLIST por 20 juízes na primeira rodada e 16 na segunda. Usou-se, para análise, o coeficiente de validade de conteúdo, considerado válido acima de 0,8 e o percentual de concordância igual ou superior a 80%. Realizou-se o teste binomial em cada item para determinar o nível de significância (p<0,05). Resultados A análise do conteúdo resultou em um coeficiente de validade de conteúdo superior a 0,8 e percentual de concordância superior a 80% em todos os critérios analisados. Já a usabilidade, apresentou percentual superior a 90% em todos os itens. Todos os itens analisados apresentaram significância estatística. O aplicativo OrientaRVM foi composto por 90 telas que formam o menu inicial e nove seções: entenda mais sobre o coração; entenda a sua doença; entenda a cirurgia de ponte de safena ou ponte mamária; cuidados antes da cirurgia; cuidados após a cirurgia; reabilitação e mudanças no estilo de vida; registros do paciente; agenda; quiz. Conclusão O OrientaRVM apresenta conteúdo confiável, funcionalidade adequada e foi recomendado para ser utilizado como recurso auxiliar na educação do paciente antes da revascularização miocárdica.


Resumen Objetivo Analizar el contenido y la usabilidad de un prototipo de aplicación móvil para apoyar la educación de pacientes en el preoperatorio de revascularización miocárdica. Métodos Estudio metodológico, cuantitativo, basado en el marco referencial de diseño instruccional contextualizado. En la etapa de análisis se realizó la revisión de alcance y un estudio cualitativo con 13 pacientes con la finalidad de identificar el contenido para componer la aplicación. En la etapa de diseño y desarrollo se estructuró el contenido. Durante la implementación se realizó la configuración de los recursos y, en la evaluación, se utilizó el método Delphi, con la evaluación del contenido a partir de los criterios de Pasquali y la usabilidad de la aplicación por medio de ERGOLIST por 20 jueces en la primera ronda y 16 en la segunda. Para el análisis se usó el coeficiente de validez de contenido, considerado válido superior a 0,8 y el porcentaje de concordancia igual o superior al 80 %. Se realizó la prueba binominal en cada ítem para determinar el nivel de significación (p<0,05). Resultados El análisis del contenido dio como resultado un coeficiente de validez de contenido superior a 0,8 y porcentaje de concordancia superior al 80 % en todos los criterios analizados. Por otro lado, la usabilidad presentó un porcentaje superior al 90 % en todos los ítems. Todos los ítems analizados presentaron significación estadística. La aplicación OrientaRVM estuvo compuesta por 90 pantallas que forman el menú inicial y nueve secciones: entienda más sobre el corazón; entienda su enfermedad; entienda la cirugía de bypass coronario o puente mamario; cuidados antes de la cirugía; cuidados después de la cirugía; rehabilitación y cambios en el estilo de vida; registros del paciente; agenda; quiz. Conclusión OrientaRVM presenta contenido confiable, funcionalidad adecuada y fue recomendado para su uso como recurso auxiliar en la educación del paciente antes de la revascularización miocárdica.


Abstract Objective To analyze the content and usability of a mobile application prototype to support patient education in the preoperative period of myocardial revascularization. Methods This is a quantitative methodological study based on the contextualized instructional design framework. In the analysis stage, a scoping review and a qualitative study were carried out with 13 patients to identify the content to compose the application. In the design and development stage, content was structured. In the implementation stage, resources were configured. In the assessment stage, the Delphi technique was used, with content assessment from the Pasquali criteria and application usability through the ERGOLIST by 20 judges in the first round and 16 in the second. For analysis, the Content Validity Coefficient was used, considered valid above 0.8 and the percentage of agreement equal to or greater than 80%. The binomial test was performed on each item to determine the significance level (p<0.05). Results Content analysis resulted in a Content Validity Coefficient greater than 0.8 and a percentage of agreement greater than 80% in all analyzed criteria. Usability, on the other hand, presented a percentage greater than 90% in all items. All items analyzed were statistically significant. The OrientaRVM application was composed of 90 screens that form the initial menu and nine sections: understand more about the heart; understand your illness; understand coronary artery bypass graft surgery or breast bypass surgery; care before surgery; care after surgery; rehabilitation and lifestyle changes; patient records; schedule; quiz. Conclusion OrientaRVM presents reliable content, adequate functionality and was recommended to be used as an auxiliary resource in patient education before myocardial revascularization.

11.
Arq. bras. cardiol ; 120(5): e20220849, 2023. tab, graf
Article in Portuguese | LILACS-Express | LILACS | ID: biblio-1439338

ABSTRACT

Resumo Fundamento A relação entre terapia de reperfusão após a síndrome coronariana aguda (SCA) e mortalidade na atenção secundária não é bem conhecida. Objetivos Avaliar o impacto de três estratégias terapêuticas: (1) terapia medicamentosa exclusiva, (2) Angioplastia Transluminal percutânea coronaria (ATPC) e (3) revascularização do miocárdio (RM) na sobrevida em longo prazo de participantes da Estratégia de Registro de Insuficiência Coronariana Aguda (ERICO). Métodos Análises de sobrevida para mortalidade por todas as causas, mortalidade por doença cardiovascular (DCV) e mortalidade por doença arterial coronariana (DAC) foram realizadas de acordo com três estratégias terapêuticas (tratamento clínico exclusivo, ATPC ou RM). Modelos de regressão de Cox foram usados para estimar o hazard ratio (HR) com intervalo de confiança de 95% (IC95%) de 180 dias a quatro anos de acompanhamento após a SCA. Os modelos são apresentados como modelo sem ajuste ou ajustado quanto à idade, sexo e DAC prévia, tipo de SCA, tabagismo, hipertensão, dislipidemia, fração de ejeção do ventrículo esquerdo e de acordo com o número de artérias coronárias principais obstruídas (≥50%). Resultados Entre os 800 participantes, as piores taxas de sobrevida (mortalidade por todas as causas e DCV) foram detectadas entre os indivíduos que se submeteram a RM. Houve correlação entre RM e DAC [HR: 2,19 (IC95% 1,05-4,55)], mas o risco perdeu significância no modelo multivariado. A ATPC foi associada a uma menor probabilidade de eventos fatais durante os quatro anos de acompanhamento: mortalidade por todas as causas [HR, análise multivariada: 0,42 (IC95% 0,26-0,70)], por DCV [HR: 0,39 (95% CI: 0,20-0,73)] e DAC [HR, análise multivariada: 0,24 (IC95% 0,09-0,63)] em comparação aos submetidos ao tratamento clínico exclusivo. Conclusão No ERICO, a ATPC após a SCA foi associada a um melhor prognóstico, principalmente sobrevida por DAC.


Abstract Background Relationship between reperfusion therapy post-acute coronary syndrome (ACS) and mortality in secondary care is not well-known. Objectives To evaluate the impact of three therapeutic strategies: (1) exclusive medical therapy, (2) percutaneous coronary intervention (PCI) and (3) coronary artery bypass grafting (CABG) on long-term survival of participants in the Strategy of Registry of Acute Coronary Syndrome (ERICO) study. Methods Survival analyses for all-cause, cardiovascular (CVD) and coronary artery disease (CAD) mortality were performed according to three therapeutic strategies (exclusive medical therapy, PCI or CABG). Cox regression models were used to estimate the hazard ratio (HR) with respective 95% confidence interval (95%CI) from 180 days to four years of follow-up after ACS. Models are presented as crude, age-sex adjusted and further adjusted for previous CAD, ACS subtype, smoking, hypertension, dyslipidemia, left ventricular ejection fraction and according to the number of obstructed (≥ 50%) major coronary arteries. Results Among 800 participants, the lowest crude survival rates were detected among individuals who underwent CABG (all-cause and CVD). CABG was correlated to CAD (HR: 2.19 [95% CI: 1.05-4.55]). However, this risk lost significance in the full model. PCI was associated to lower probability of fatal events during four-year follow-up: all-cause [multivariate HR: 0.42 (95% CI: 0.26-0.70)], CVD [HR: 0.39 (95% CI: 0.20-0.73)] and CAD [multivariate HR: 0.24 (95% CI: 0.09-0.63)] compared to those submitted to exclusive medical therapy. Conclusion In the ERICO study, PCI after ACS was associated to better prognosis, particularly CAD survival.

13.
Arq. bras. cardiol ; 120(3): e20220627, 2023. tab, graf
Article in Portuguese | LILACS-Express | LILACS | ID: biblio-1420197

ABSTRACT

Resumo Fundamento Os resultados a curto prazo após o uso de enxertos arteriais ainda suscitam questionamentos e dúvidas na sociedade médica. Objetivo Comparar os resultados imediatos de pacientes submetidos à cirurgia de revascularização do miocárdio com enxerto arterial único versus enxertos arteriais múltiplos. Métodos Estudo de coorte transversal no Registro Paulista de Cirurgia Cardiovascular II (REPLICCAR II). Os dados perioperatórios de 3122 pacientes foram agrupados pelo número de enxertos arteriais utilizados e seus desfechos foram comparados: reoperação, infecção profunda da ferida torácica (IPFT), acidente vascular cerebral, lesão renal aguda, intubação prolongada (>24 horas), tempo de internação curta (<6 dias), tempo de internação prolongada (>14 dias), morbidade e mortalidade. O Propensity Score Matching (PSM) correspondeu a 1062 pacientes, ajustado para o risco de mortalidade. Resultados Após PSM, o grupo enxerto arterial único apresentou pacientes com idade avançada, mais ex-fumantes, hipertensos, diabéticos, portadores de angina estável e infarto do miocárdio prévio. Nos enxertos arteriais múltiplos houve predomínio do sexo masculino, pneumonia recente e cirurgias de urgência. Após o procedimento, houve maior incidência de derrame pleural (p=0,042), pneumonia (p=0,01), reintubação (p=0,006), IPFT (p=0,007) e desbridamento esternal (p=0,015) no grupo de enxertos multiarteriais, porém, menor necessidade de hemotransfusão (p=0,005), infecções de extremidades (p=0,002) e menor tempo de internação (p=0,036). O uso bilateral da artéria torácica interna não foi relacionado ao aumento da taxa de IPFT, e sim a hemoglobina glicosilada >6,40% (p=0,048). Conclusão Pacientes submetidos a técnica multiarterial apresentaram maior incidência de complicações pulmonares e IPFT, sendo que a hemoglobina glicosilada ≥6,40% teve maior influência no resultado infeccioso do que a escolha dos enxertos.


Abstract Background The short-term results after using arterial grafts still raise questions and doubts for medical society. Objective To compare the immediate outcomes of patients undergoing single arterial graft versus multiple arterial grafts coronary artery bypass grafting surgery. Methods Cross-sectional cohort study in the São Paulo Registry of Cardiovascular Surgery II (REPLICCAR II). Perioperative data from 3122 patients were grouped by the number of arterial grafts used, and their outcomes were compared: reoperation, deep sternal wound infection (DSWI), stroke, acute kidney injury, prolonged intubation (>24 hours), short hospital stay (<6 days), prolonged hospital stay (>14 days), morbidity and mortality. Propensity Score Matching (PSM) matched 1062 patients, adjusted for the mortality risk. Results After PSM, the single arterial graft group showed patients with advanced age, more former smokers, hypertension, diabetes, stable angina, and previous myocardial infarction. In the multiple arterial grafts, there was a predominance of males, recent pneumonia, and urgent surgeries. After the procedure, there was a higher incidence of pleural effusion (p=0.042), pneumonia (p=0.01), reintubation (p=0.006), DSWI (p=0.007), and sternal debridement (p=0.015) in the multiple arterial grafts group, however, less need for blood transfusion (p=0.005), extremity infections (p=0.002) and shorter hospital stays (p=0.036). Bilateral use of the internal thoracic artery was not related to increased DSWI rate, but glycosylated hemoglobin >6.40% (p=0.048). Conclusion Patients undergoing the multiarterial technique had a higher incidence of pulmonary complications, and DSWI, where glycosylated hemoglobin ≥6.40%, had a greater influence on the infectious outcome than the choice of grafts.

15.
Arq. bras. cardiol ; 120(4): e20220169, 2023. tab, graf
Article in Portuguese | LILACS-Express | LILACS | ID: biblio-1429797

ABSTRACT

Resumo Fundamento: A doença arterial coronariana é um distúrbio complexo que causa morte em todo o mundo. Um dos genes envolvidos no desenvolvimento dessa doença pode ser o PTEN. Objetivos: Nosso objetivo foi investigar a expressão gênica e proteica do PTEN em amostras de tecido e sangue retiradas de pacientes submetidos à cirurgia de revascularização miocárdica. Métodos: Foram realizados estudos moleculares no Centro de estudos do genoma humano e células-tronco da Universidade Erciyes (GENKOK). Amostras do apêndice atrial direito e de sangue foram coletadas da veia central de 22 pacientes submetidos à cirurgia de revascularização miocárdica antes de iniciar e terminar a circulação extracorpórea. A expressão do PTEN foi determinada usando PCR quantitativo em tempo real e análise de Western Blot. O nível de significância aceito foi de p<0,05. Resultados: Não houve diferença significativa na expressão gênica do PTEN em amostras de sangue coletadas antes e depois da circulação extracorpórea. Entretanto, foi observado um aumento substancial nos níveis de expressão gênica e proteica de P-PTEN e PTEN nas amostras de tecido. A expressão gênica miocárdica PTEN aumentou significativamente ao final da circulação extracorpórea. A expressão gênica do PTEN no período pós-circulação extracorpórea aumentou em comparação com o período pré-circulação extracorpórea, mas não foi um aumento significativo em comparação com sujeitos saudáveis do grupo de controle. Conclusão: Este estudo revelou pela primeira vez o papel do gene PTEN analisando a expressão de mRNA e de proteína em pacientes com revascularização miocárdica, que se manifesta tanto em tecido miocárdico quanto em amostras de sangue. O aumento dos níveis de PTEN pode ser um marcador no tecido miocárdico para pacientes com doença arterial coronariana.


Abstract Background: Coronary artery disease is a complex disorder that causes death worldwide. One of the genes involved in developing this disease may be PTEN. Objectives: This study aimed to investigate the PTEN gene and protein expression in tissue and blood samples taken from coronary bypass surgery patients. Methods: Molecular studies were performed at Erciyes University Genome and Stem Cell Center (GENKOK). Right atrial appendage and blood samples were taken from the central vein of 22 coronary bypass surgery patients before starting and ending cardiopulmonary bypass. PTEN expression was determined using quantitative real-time PCR and western blot analysis. The significance level was accepted as p<0.05. Results: There was no significant difference in the PTEN gene expression in blood samples taken before and after cardiopulmonary bypass. However, a substantial increase in both protein and gene expression levels of P-PTEN and PTEN was observed in the tissue samples. Myocardial expression of the PTEN gene was significantly increased at the end of the cardiopulmonary bypass. PTEN gene expression in the post-cardiopulmonary bypass period was increased when compared to the pre-bypass period, but it was insignificant when compared to healthy controls. Conclusion: This study first revealed the role of the PTEN gene by analyzing both mRNA and protein expression in coronary bypass patients, appearing in both myocardial tissue and blood samples. Increased levels of PTEN may be a marker in myocardial tissue for patients with coronary artery disease.

18.
Arq. bras. cardiol ; 120(4): e20220672, 2023.
Article in Portuguese | LILACS, CONASS, Sec. Est. Saúde SP, SESSP-IDPCPROD, Sec. Est. Saúde SP | ID: biblio-1429808
19.
Rev. Odontol. Araçatuba (Impr.) ; 43(3): 40-47, set.-dez. 2022. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: biblio-1381100

ABSTRACT

Introdução: A revascularização pulpar é uma terapêutica que visa regenerar parte do complexo dentino pulpar, proporcionando a continuidade do desenvolvimento radicular, sanando a fragilidade e propensão a fratura que a apicificação apresentava. É um tratamento direcionado a dentes diagnosticados com rizogênese incompleta. Entretanto, a possibilidade de realização da técnica em dentes maduros tem sido alvo de pesquisas e estudo. Objetivo: O objetivo deste estudo, é apresentar através da revisão de literatura e caso clínico, os benefícios dos procedimentos endodônticos regenerativos (REPs), em dentes jovens e maduros, em relação à apicificação. Metodologia: O estudo é uma revisão de literatura, desenvolvida através de pesquisa exploratória e realizada uma abordagem qualitativa. Para a coleta de dados, foi aplicada a técnica de análise documental e revisão bibliográfica consultando PUBMED, Scielo, Google Acadêmico e monografias acadêmicas. O caso clínico foi realizado de acordo com o protocolo atualizado pela AAE em 2016. Discussão: A revascularização pulpar tem mostrado ser um tratamento promissor na endodontia, é preconizada a desinfecção e medicação intracanal, já que não pode haver instrumentação mecânica. Os agentes irrigadores devem ser bactericidas, bacteriostáticos e devem ter baixo teor de toxicidade, já a medicação intracanal deve ter papel inibidor em bactérias gram positivas e gram negativas. Conclusão: A apicificação mesmo com o uso de MTA, que não exige trocas excessivas de medicações, não sana as necessidades que um dente com rizogênese incompleta requer. Sendo assim, a revascularização foi eleita o tratamento de melhor prognóstico para dentes jovens e necrosados. O caso clínico demonstrou qualidade moderada, no tratamento regenerativo em um dente maduro com reabsorção externa, abrindo novas perspectivas para os (REPs)(AU)


Introduction: Pulp revascularization is a therapy that aims to regenerate part of the pulp dentin complex, providing continuity of root development, remedying the fragility and propensity to fracture that apexification presented. It is a treatment aimed at teeth diagnosed with incomplete rhizogenesis. However, the possibility of performing the technique on mature teeth has been the subject of research and study. Objective: The aim of this study is to present, through literature review and clinical case, the benefits of regenerative endodontic procedures (REPs), in young and mature teeth, in relation to apexification. Methodology: The study is a literature review, developed through exploratory research and carried out a qualitative approach. For data collection, the technique of document analysis and bibliographic review was applied, consulting PUBMED, Scielo, Academic Google and academic monographs. The clinical case was performed according to the protocol updated by the SEA in 2016. Discussion: Pulp revascularization has shown to be a promising treatment in endodontics, intracanal disinfection and medication is recommended, as there can be no mechanical instrumentation. Irrigating agents must be bactericidal, bacteriostatic and must have a low level of toxicity, whereas intracanal medication must have an inhibiting role in gram positive and gram negative bacteria. Conclusion: Apexification, even with the use of MTA, which does not require excessive medication changes, does not meet the needs that a tooth with incomplete rhizogenesis requires. Therefore, revascularization was chosen as the treatment with the best prognosis for young and necrotic teeth. The clinical case demonstrated moderate quality in regenerative treatment in a mature tooth with external resorption, opening new perspectives for (REPs)(AU)


Subject(s)
Humans , Female , Middle Aged , Root Canal Therapy , Dental Pulp Necrosis/therapy , Regenerative Endodontics , Dental Pulp Necrosis , Dental Pulp , Apexification
20.
Preprint in Portuguese | SciELO Preprints | ID: pps-4790

ABSTRACT

Background: Cardiovascular diseases are the leading cause of death in the world. The use of hematopoietic precursor cells and recent advances made in heart graft bioengineering offer a new therapeutic modality for post-myocardial infarction (MI)  and cardiac tissue regeneration. CD34 is a marker expressed on all hematopoietic and endothelial precursor cells, and functions as a cell adhesion factor. The antibody corresponding to this marker is used in immunohistochemistry to assess the formation of new vessels and the presence of stem cells. Aim: To evaluate the efficacy of omentopexy as stem cell donor, on previously infarcted myocardium, using immunohistochemically analysis of CD34. Method: Myocardial infarction was generated in four pigs, by ligature of the 1st and 2nd marginal branches of the circumflex artery. In three animals, abrasion of the infarcted epicardium was performed followed by multiple myocardial perforations and the mobilization of the omentum from the abdominal cavity to the mediastinum, sutured on the infarcted area. In the fourth animal, omentopexy was not performed and only the abrasion and perforation of the infarcted area were performed. All hearts were removed for CD34 immunohistochemically evaluation. Results:  In the samples from the group submitted to omentopexy, there was a 60% increase in angiogenesis, and in the samples from the control animal there was minimal staining.  Four samples from different sites of each animal, totaling 16 histopathological samples were evaluated. All samples were immunolabelled for CD34. Conclusions: Omentopexy proved to be effective in seeding previously infarcted myocardium with stem angiogenic cells, seen through immunohistochemistry, using CD34 marker.


Racional: As doenças cardiovasculares são a principal causa de morte no mundo. O uso de células precursoras hematopoiéticas e os recentes progressos feitos na bioengenharia de enxertos cardíacos oferecem uma nova modalidade terapêutica para a regeneração do tecido cardíaco pós-infarto do miocárdio (IM). O CD34 é um marcador expresso em todas as células precursoras hematopoiéticas e endoteliais, e funciona como fator de adesão celular. O anticorpo que correspondente a este marcador é utilizado na imunohistoquímica para avaliar a formação de novos vasos e a presença de células-tronco. Objetivo: O estudo teve por objetivo avaliar a eficácia da omentopexia na neovascularização e na doação de células tronco de corações suínos previamente infartados, a partir da análise imunohistoquímica do CD34. Método: O infarto do miocárdio foi gerado em 4 suínos, por ligadura do 1°e 2° ramos marginais da artéria circunflexa. Em 3 animais realizou-se abrasão cuidadosa do epicárdio infartado seguido de múltiplas perfurações miocárdicas e a mobilização do omento da cavidade abdominal para o mediastino, envolvendo a área infartada e as perfurações. No quarto animal não foi realizado a omentopexia sendo realizado apenas a abrasão e perfuração da área infartada. Todos os animais foram eutanasiados ao 30º dia pós operatório e os corações retirados para avaliação macroscópica, microscópica e Imunohistoquímica do CD34. Resultados: Nas amostras do grupo submetido a omentopexia, ocorreu um aumento de 60% da angiogênese, sendo que nas amostras do animal controle houve marcação mínima. Foram avaliadas quatro amostras de diferentes sítios de cada coração dos animais, totalizando 16 amostras histopatológicas. Todas as amostras foram imunomarcadas para CD-34. Conclusões: O omento mostrou-se eficiente na indução de neovascularização pela presença de células tronco, vista através da marcação do CD34, demonstrando grande potencial como futura terapêutica para restaurar áreas de miocárdio isquêmico.

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