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2.
PLoS One ; 15(9): e0238737, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32911513

RESUMO

OBJECTIVES: The objectives of this study were to describe a novel statewide registry for cardiac surgery in Brazil (REPLICCAR), to compare a regional risk model (SPScore) with EuroSCORE II and STS, and to understand where quality improvement and safety initiatives can be implemented. METHODS: A total of 11 sites in the state of São Paulo, Brazil, formed an online registry platform to capture information on risk factors and outcomes after cardiac surgery procedures for all consecutive patients. EuroSCORE II and STS values were calculated for each patient. An SPScore model was designed and compared with EuroSCORE II and STS to predict 30-day outcomes: death, reoperation, readmission, and any morbidity. RESULTS: A total of 5222 patients were enrolled in this study between November 2013 and December 2017. The observed 30-day mortality rate was 7.6%. Most patients were older, overweight, and classified as New York Heart Association (NYHA) functional class III; 14.5% of the patient population had a positive diagnosis of rheumatic heart disease, 10.9% had insulin-dependent diabetes, and 19 individuals had a positive diagnosis of Chagas disease. When evaluating the prediction performance, we found that SPScore outperformed EuroSCORE II and STS in the prediction of mortality (0.90 vs. 0.76 and 0.77), reoperation (0.84 vs. 0.60 and 0.56), readmission (0.84 vs. 0.55 and 0.51), and any morbidity (0.80 vs. 0.65 and 0.64), respectively (p<0.001). CONCLUSIONS: The REPLICCAR registry might stimulate the creation of other cardiac surgery registries in developing countries, ultimately improving the regional quality of care provided to patients.


Assuntos
Procedimentos Cirúrgicos Cardíacos/estatística & dados numéricos , Modelos Estatísticos , Brasil , Procedimentos Cirúrgicos Cardíacos/efeitos adversos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Controle de Qualidade , Sistema de Registros , Medição de Risco , Segurança
3.
Arq Bras Cardiol ; 114(5): 849-942, 2020 06 01.
Artigo em Inglês, Português | MEDLINE | ID: mdl-32491078
5.
Arq. bras. cardiol ; 114(4): 603-612, Abr. 2020. tab, graf
Artigo em Inglês | LILACS-Express | LILACS, Sec. Est. Saúde SP | ID: biblio-1131198

RESUMO

Abstract Background: The current challenge of cardiovascular surgery (CVS) is to improve the outcomes in increasingly severe patients. In this respect, continuous quality improvement (CQI) programs have had an impact on outcomes. Objective: To assess the evolution of the incidence and mortality due to CVS, as well as the current outcomes of the Hospital das Clínicas Heart Institute of the University of São Paulo Medical School (InCor-HCFMUSP). Methods: An outcome analysis of CVSs performed at the InCor, between January 1984 and June 2019. We observed the surgical volume and mortality rates in 5 time periods: 1st (1984-1989), 2nd (1990-1999), 3rd (2000-2007), 4th (2008-2015) and 5th (2016-2019). The CQI program was implemented between 2015 and 2016. The analysis included the total number of surgeries and the evolution of the most frequent procedures. Results: A total of 105,599 CCVs were performed, with an annual mean of 2,964 procedures and mortality of 5,63%. When comparing the 4th and the 5th periods, the average global volume of surgeries was increased from 2,943 to 3,139 (p = 0.368), bypass graft (CABG), from 638 to 597 (p = 0.214), heart valve surgery, from 372 to 465 (p = 0.201), and congenital heart disease surgery, from 530 to 615 (p = 0.125). The average global mortality went from 7.8% to 5% (p < 0.0001); in CABG surgery, from 5.8% to 3.1% (p < 0.0001); in heart valve surgery, from 14% to 7.5% (p < 0.0001) and in congenital heart disease surgery, from 12.1% to 9.6% (p < 0.0001). Conclusion: In spite of a recent trend towards increased surgical volume, there was a significant decrease in operative mortality in the groups studied. After the implementation of the CQI program, the mortality rates were closer to international standards.


Resumo Fundamento: O desafio atual da cirurgia cardiovascular (CCV) é melhorar resultados em pacientes cada vez mais graves. Nesse sentido, Programas de Melhoria Contínua da Qualidade (PMCQ) tem impactado os resultados. Objetivo: Avaliar a evolução da incidência e mortalidade das CCV, assim como os resultados atuais do Instituto do Coração do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (InCor). Métodos: Análise dos resultados das CCV realizadas no InCor entre jan-1984 e jun-2019. Foram observadas as tendências dos volumes cirúrgicos e da mortalidade em 5 períodos 1º (1984-1989), 2º (1990-1999), 3º (2000-2007), 4º (2008-2015) e 5º (2016-2019). O PMCQ foi estabelecido entre 2015-2016. A análise incluiu o total de cirurgias e a evolução dos procedimentos mais frequentes. Resultados: Foram realizadas 105.599 CCV, com uma média anual de 2.964 procedimentos e mortalidade de 5,63%. Comparando o 4º com o 5º período, o volume global médio de cirurgias foi de 2.943 para 3.139 (p = 0,368), cirurgias de revascularização miocárdica (CRM) de 638 para 597 (p = 0,214), valvas cardíacas de 372 para 465 (p = 0,201) e cardiopatias congênitas de 530 para 615 (p = 0,125). A mortalidade média global passou de 7,8% para 5% (p < 0,0001), nas cirurgias de revascularização miocárdica de 5,8% para 3,1% (p < 0,0001), nas cirurgias valvares de 14% para 7,5% (p < 0,0001) e nas cirurgias de cardiopatias congênitas de 12,1% para 9,6% (p < 0,0001). Conclusão: Embora haja uma tendência recente ao aumento dos volumes cirúrgicos, houve uma diminuição significativa da mortalidade cirúrgica nos grupos analisados. Após o estabelecimento do PMCQ, as taxas de mortalidade se aproximaram a dos padrões internacionais.

6.
Arq Bras Cardiol ; 114(4): 603-612, 2020 04.
Artigo em Inglês, Português | MEDLINE | ID: mdl-32074203

RESUMO

BACKGROUND: The current challenge of cardiovascular surgery (CVS) is to improve the outcomes in increasingly severe patients. In this respect, continuous quality improvement (CQI) programs have had an impact on outcomes. OBJECTIVE: To assess the evolution of the incidence and mortality due to CVS, as well as the current outcomes of the Hospital das Clínicas Heart Institute of the University of São Paulo Medical School (InCor-HCFMUSP). METHODS: An outcome analysis of CVSs performed at the InCor, between January 1984 and June 2019. We observed the surgical volume and mortality rates in 5 time periods: 1st (1984-1989), 2nd (1990-1999), 3rd (2000-2007), 4th (2008-2015) and 5th (2016-2019). The CQI program was implemented between 2015 and 2016. The analysis included the total number of surgeries and the evolution of the most frequent procedures. RESULTS: A total of 105,599 CCVs were performed, with an annual mean of 2,964 procedures and mortality of 5,63%. When comparing the 4th and the 5th periods, the average global volume of surgeries was increased from 2,943 to 3,139 (p = 0.368), bypass graft (CABG), from 638 to 597 (p = 0.214), heart valve surgery, from 372 to 465 (p = 0.201), and congenital heart disease surgery, from 530 to 615 (p = 0.125). The average global mortality went from 7.8% to 5% (p < 0.0001); in CABG surgery, from 5.8% to 3.1% (p < 0.0001); in heart valve surgery, from 14% to 7.5% (p < 0.0001) and in congenital heart disease surgery, from 12.1% to 9.6% (p < 0.0001). CONCLUSION: In spite of a recent trend towards increased surgical volume, there was a significant decrease in operative mortality in the groups studied. After the implementation of the CQI program, the mortality rates were closer to international standards.


Assuntos
Procedimentos Cirúrgicos Cardíacos , Cardiopatias Congênitas , Mortalidade Hospitalar , Humanos , Incidência , Resultado do Tratamento , Procedimentos Cirúrgicos Vasculares
7.
Interact Cardiovasc Thorac Surg ; 30(2): 229-235, 2020 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-31713609

RESUMO

OBJECTIVES: Our goal was to analyse the initial results of the first 50 transapical transcatheter mitral valve-in-valve procedures performed in a single Latin American centre. METHODS: A prospective, single centre, database analysis was conducted to evaluate immediate, 30-day and 1-year postoperative results of 50 consecutive patients who had a transcatheter mitral valve-in-valve procedure from May 2015 to June 2018. All patients were operated on in a hybrid operating room and received a balloon-expandable valve via the transapical approach. Preoperative and postoperative characteristics were analysed and compared between the first 25 and the second 25 patients to evaluate the impact of the learning curve. Twenty patients had a follow-up examination at 1 year. RESULTS: There was a 98% device success rate. The patients had a mean age of 64.8 years; 72% were women; 80% were in New York Heart Association functional class ≥III preoperatively; and 36% of the procedures were urgent. The mean Society of Thoracic Surgeons scores and EuroSCORE II were 8.3% and 12.4%, respectively. Patients had a median of 2 previous operations; valve durability was 12.1 years; and 64% mitral valve disease of rheumatic fever aetiology. Echocardiography showed decreases in the maximum and mean mitral gradients from 23.5 to 14.6 and 11.5 to 6.4 mmHg postoperatively; the overall mean hospitalization period was 15 days. The overall mortality rate at 30 days was 14%, with 1 intraprocedural death. Further subanalyses between the first and the second half of the cases showed a drop in the mortality rate from 20% to 8% (P < 0.01). CONCLUSION: The transcatheter mitral valve-in-valve procedure was shown to be a safe and effective procedure to treat bioprosthetic dysfunction, with potential benefits in patients with rheumatic disease.


Assuntos
Doenças das Valvas Cardíacas/cirurgia , Implante de Prótese de Valva Cardíaca/métodos , Próteses Valvulares Cardíacas , Valva Mitral/cirurgia , Ecocardiografia , Feminino , Doenças das Valvas Cardíacas/diagnóstico , Humanos , América Latina , Masculino , Pessoa de Meia-Idade , Valva Mitral/diagnóstico por imagem , Estudos Prospectivos , Desenho de Prótese , Fatores de Tempo , Resultado do Tratamento
8.
Int J Infect Dis ; 90: 201-205, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31525520

RESUMO

OBJECTIVES: The aim of this study was to elaborate on and validate a score for the early diagnosis of mediastinitis after cardiothoracic surgery. METHODS: Between 2007 and 2017, patients who experienced thoracic surgical-site infection after cardiothoracic surgery were enrolled. Laboratory, clinical, and chest CT findings were retrospectively analyzed. Patients were followed up until hospital discharge or intra-hospital death. Univariate and multivariate regression analyses were performed. RESULTS: 950 surgical-site infections were found and analyzed (131 mediastinitis, 819 superficial/deep infections). Of the 131 mediastinitis episodes, 88% required surgical thoracic debridement,Staphylococcus aureus was identified in 43%, and overall mortality was 42%. The following variables were related to mediastinitis diagnosis: sternal diastasis (OR=2.5; 95% confidence interval [95%CI]: 1.2-5.3; P=0.012), bilateral pleural effusion (OR=1.9; 95%CI: 1.0-3.6; P=0.04), leukocyte count ≥14,000cells/mm3 (OR=2.5; 95%CI: 1.3-4.7; P=0.006), male sex (OR=2; 95%CI: 1.11-4; P=0.022), and positive blood culture (OR=3.0; 95%CI: 1.6-5.6; P=0.001). The score predicted with reasonable accuracy mediastinitis in the derivation cohort (AUC-ROC, 0.7476) and the validation cohort (AUC-ROC, 0.7149). Groups with high (31%) and low (5%) risk of mediastinitis were identified. CONCLUSIONS: An early diagnostic score in patients with surgical-site infection after cardiothoracic surgery identified groups with a low and high risk for mediastinitis.


Assuntos
Mediastinite/diagnóstico , Infecção da Ferida Cirúrgica/diagnóstico , Procedimentos Cirúrgicos Torácicos/efeitos adversos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Estudos de Coortes , Feminino , Humanos , Masculino , Mediastinite/etiologia , Mediastinite/microbiologia , Mediastinite/mortalidade , Pessoa de Meia-Idade , Estudos Retrospectivos , Infecções Estafilocócicas/diagnóstico , Infecções Estafilocócicas/etiologia , Infecções Estafilocócicas/microbiologia , Infecções Estafilocócicas/mortalidade , Staphylococcus aureus/classificação , Staphylococcus aureus/genética , Staphylococcus aureus/isolamento & purificação , Esterno , Infecção da Ferida Cirúrgica/etiologia , Infecção da Ferida Cirúrgica/microbiologia , Infecção da Ferida Cirúrgica/mortalidade , Adulto Jovem
11.
Rev. bras. cir. cardiovasc ; 33(6): 618-625, Nov.-Dec. 2018. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-977465

RESUMO

Abstract Currently there is a progressive increase in the prevalence of diabetes in a referred for cardiovascular surgery. Benefits of glycemic management (< 180 mg/dL) in diabetic patients compared to patients without diabetes in perioperative cardiac surgery. The purpose of this study is to present recommendations based on international evidence and adapted to our clinical practice for the perioperative management of hyperglycemia in adult patients with and without diabetes undergoing cardiovascular surgery. This update is based on the latest current literature derived from articles and guidelines regarding perioperative management of diabetic patients to cardiovascular surgery.

12.
Int J Infect Dis ; 67: 3-6, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28935245

RESUMO

OBJECTIVE: To determine the annual incidence of prosthetic valve endocarditis (PVE) and to evaluate its current classification based on the epidemiological distribution of agents identified and their sensitivity profiles. METHODS: Consecutive cases of PVE occurring within the first year of valve surgery during the period 1997-2014 were included in this prospective cohort study. Incidence, demographic, clinical, microbiological, and in-hospital mortality data of these PVE patients were recorded. RESULTS: One hundred and seventy-two cases of PVE were included, and the global annual incidence of PVE was 1.7%. Most PVE cases occurred within 120days after surgery (76.7%). After this period, there was a reduction in resistant microorganisms (64.4% vs. 32.3%, respectively; p=0.007) and an increase in the incidence of Streptococcus spp (1.9% vs. 23.5%; p=0.007). A literature review revealed 646 cases of PVE with an identified etiology, of which 264 (41%) were caused by coagulase-negative staphylococci and 43 (7%) by Streptococcus spp. This is in agreement with the current study findings. CONCLUSIONS: Most PVE cases occurred within 120days after valve surgery, and the same etiological agents were identified in this period. The current cut-off level of 365days for the classification of early-onset PVE should be revisited.


Assuntos
Endocardite Bacteriana/epidemiologia , Endocardite Bacteriana/etiologia , Próteses Valvulares Cardíacas/efeitos adversos , Infecções Relacionadas à Prótese/epidemiologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Endocardite Bacteriana/microbiologia , Feminino , Mortalidade Hospitalar , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Infecções Relacionadas à Prótese/microbiologia , Infecções Estafilocócicas/epidemiologia , Infecções Estafilocócicas/etiologia , Adulto Jovem
13.
Braz J Cardiovasc Surg ; 33(6): 618-625, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30652752

RESUMO

Currently there is a progressive increase in the prevalence of diabetes in a referred for cardiovascular surgery. Benefits of glycemic management (< 180 mg/dL) in diabetic patients compared to patients without diabetes in perioperative cardiac surgery. The purpose of this study is to present recommendations based on international evidence and adapted to our clinical practice for the perioperative management of hyperglycemia in adult patients with and without diabetes undergoing cardiovascular surgery. This update is based on the latest current literature derived from articles and guidelines regarding perioperative management of diabetic patients to cardiovascular surgery.


Assuntos
Procedimentos Cirúrgicos Cardíacos , Diabetes Mellitus/tratamento farmacológico , Hiperglicemia/tratamento farmacológico , Hipoglicemiantes/administração & dosagem , Assistência Perioperatória , Complicações Pós-Operatórias/prevenção & controle , Protocolos Clínicos , Medicina Baseada em Evidências , Humanos
14.
Braz J Cardiovasc Surg ; 32(5): 438-441, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29211227

RESUMO

The median sternotomy remains the standard approach in cardiovascular surgery but, in some conditions, it can be considered difficult to perform, especially in patients with history of esophagectomy. This case report describes a successful resection of a left atrial myxoma through a right anterolateral thoracotomy approach in a patient with a previous retrosternal gastric tube reconstruction. The decision for the best surgical approach was made after a heart surgery team discussion. Through this surgical access, a safe and excellent exposure of the left atrium was possible, and a complete resection of the myxoma was performed without any injury to the gastric tube.


Assuntos
Neoplasias Cardíacas/cirurgia , Mixoma/cirurgia , Idoso , Gastrostomia , Átrios do Coração/patologia , Átrios do Coração/cirurgia , Humanos , Masculino , Toracotomia , Resultado do Tratamento
15.
Rev. bras. cir. cardiovasc ; 32(5): 438-441, Sept.-Oct. 2017. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-897935

RESUMO

Abstract The median sternotomy remains the standard approach in cardiovascular surgery but, in some conditions, it can be considered difficult to perform, especially in patients with history of esophagectomy. This case report describes a successful resection of a left atrial myxoma through a right anterolateral thoracotomy approach in a patient with a previous retrosternal gastric tube reconstruction. The decision for the best surgical approach was made after a heart surgery team discussion. Through this surgical access, a safe and excellent exposure of the left atrium was possible, and a complete resection of the myxoma was performed without any injury to the gastric tube.

16.
BMC Infect Dis ; 17(1): 297, 2017 Apr 21.
Artigo em Inglês | MEDLINE | ID: mdl-28431520

RESUMO

BACKGROUND: The etiology of myxomatous mitral valve degeneration (MVD) is not fully understood and may depend on time or environmental factors for which the interaction of infectious agents has not been documented. The purpose of the study is to analyze the effect of Mycoplasma pneumoniae (Mp), Chlamydophila pneumoniae (Cp) and Borrelia burgdorferi (Bb) on myxomatous mitral valve degeneration pathogenesis and establish whether increased in inflammation and collagen degradation in myxomatous mitral valve degeneration etiopathogenesis. METHODS: An immunohistochemical test was performed to detect the inflammatory cells (CD20, CD45, CD68) and Mp, Bb and MMP9 antigens in two groups. The in situ hybridization was performed to detect Chlamydophila pneumoniae and the bacteria study was performed using transmission electron microscopy. Group 1 (n = 20), surgical specimen composed by myxomatous mitral valve degeneration, and group 2 (n = 20), autopsy specimen composed by normal mitral valve. The data were analyzed using SigmaStat version 20 (SPSS Inc., Chicago, IL, USA). The groups were compared using Student's t test, Mann-Whitney test. A correlation analysis was performed using Spearman's correlation test. P values lower than 0.05 were considered statistically significant. RESULTS: By immunohistochemistry, there was a higher inflammatory cells/mm2 for CD20 and CD45 in group 1, and CD68 in group 2. Higher number of Mp and Cp antigens was observed in group 1 and more Bb antigens was detected in group 2. The group 1 exhibited a positive correlation between the Bb and MVD percentage, between CD45 and Mp, and between MMP9 with Mp. These correlations were not observed in the group 2. Electron microscopy revealed the presence of structures compatible with microorganisms that feature Borrelia and Mycoplasma characteristics. CONCLUSIONS: The presence of infectious agents, inflammatory cells and collagenases in mitral valves appear to contribute to the pathogenesis of MVD. Mycoplasma pneumoniae was strongly related with myxomatous mitral valve degeneration. Despite of low percentage of Borrelia burgdorferi in MD group, this agent was correlated with myxomatous degeneration and this may occour due synergistic actions between these infectious agents likely contribute to collagen degradation.


Assuntos
Borrelia burgdorferi/patogenicidade , Chlamydophila pneumoniae/patogenicidade , Valva Mitral/microbiologia , Valva Mitral/patologia , Mycoplasma pneumoniae/patogenicidade , Idoso , Estudos de Casos e Controles , Chicago , Chlamydophila pneumoniae/genética , Colágeno/metabolismo , Feminino , Humanos , Imuno-Histoquímica , Masculino , Metaloproteinase 9 da Matriz/metabolismo , Microscopia Eletrônica de Transmissão , Pessoa de Meia-Idade , Insuficiência da Valva Mitral/patologia , Miocardite/microbiologia , Miocardite/patologia , Fatores de Risco
17.
PLoS One ; 12(1): e0170191, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28121998

RESUMO

Autoimmune inflammatory reactions leading to rheumatic fever (RF) and rheumatic heart disease (RHD) result from untreated Streptococcus pyogenes throat infections in individuals who exhibit genetic susceptibility. Immune effector mechanisms have been described that lead to heart tissue damage culminating in mitral and aortic valve dysfunctions. In myxomatous valve degeneration (MXD), the mitral valve is also damaged due to non-inflammatory mechanisms. Both diseases are characterized by structural valve disarray and a previous proteomic analysis of them has disclosed a distinct profile of matrix/structural proteins differentially expressed. Given their relevance in organizing valve tissue, we quantitatively evaluated the expression of vimentin, collagen VI, lumican, and vitronectin as well as performed immunohistochemical analysis of their distribution in valve tissue lesions of patients in both diseases. We identified abundant expression of two isoforms of vimentin (45 kDa, 42 kDa) with reduced expression of the full-size protein (54 kDa) in RHD valves. We also found increased vitronectin expression, reduced collagen VI expression and similar lumican expression between RHD and MXD valves. Immunohistochemical analysis indicated disrupted patterns of these proteins in myxomatous degeneration valves and disorganized distribution in rheumatic heart disease valves that correlated with clinical manifestations such as valve regurgitation or stenosis. Confocal microscopy analysis revealed a diverse pattern of distribution of collagen VI and lumican into RHD and MXD valves. Altogether, these results demonstrated distinct patterns of altered valve expression and tissue distribution/organization of structural/matrix proteins that play important pathophysiological roles in both valve diseases.


Assuntos
Doenças Autoimunes/patologia , Prolapso da Valva Mitral/patologia , Cardiopatia Reumática/patologia , Adulto , Doenças Autoimunes/imunologia , Doenças Autoimunes/metabolismo , Colágeno Tipo VI/análise , Matriz Extracelular/química , Feminino , Perfilação da Expressão Gênica , Humanos , Lumicana/análise , Masculino , Pessoa de Meia-Idade , Valva Mitral/química , Prolapso da Valva Mitral/etiologia , Prolapso da Valva Mitral/imunologia , Prolapso da Valva Mitral/metabolismo , Domínios Proteicos , Proteômica , Cardiopatia Reumática/imunologia , Cardiopatia Reumática/metabolismo , Vimentina/análise , Vitronectina/análise
18.
Anesthesiology ; 126(1): 85-93, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-27841822

RESUMO

BACKGROUND: Vasoplegic syndrome is a common complication after cardiac surgery and impacts negatively on patient outcomes. The objective of this study was to evaluate whether vasopressin is superior to norepinephrine in reducing postoperative complications in patients with vasoplegic syndrome. METHODS: This prospective, randomized, double-blind trial was conducted at the Heart Institute, University of Sao Paulo, Sao Paulo, Brazil, between January 2012 and March 2014. Patients with vasoplegic shock (defined as mean arterial pressure less than 65 mmHg resistant to fluid challenge and cardiac index greater than 2.2 l · min · m) after cardiac surgery were randomized to receive vasopressin (0.01 to 0.06 U/min) or norepinephrine (10 to 60 µg/min) to maintain arterial pressure. The primary endpoint was a composite of mortality or severe complications (stroke, requirement for mechanical ventilation for longer than 48 h, deep sternal wound infection, reoperation, or acute renal failure) within 30 days. RESULTS: A total of 330 patients were randomized, and 300 were infused with one of the study drugs (vasopressin, 149; norepinephrine, 151). The primary outcome occurred in 32% of the vasopressin patients and in 49% of the norepinephrine patients (unadjusted hazard ratio, 0.55; 95% CI, 0.38 to 0.80; P = 0.0014). Regarding adverse events, the authors found a lower occurrence of atrial fibrillation in the vasopressin group (63.8% vs. 82.1%; P = 0.0004) and no difference between groups in the rates of digital ischemia, mesenteric ischemia, hyponatremia, and myocardial infarction. CONCLUSIONS: The authors' results suggest that vasopressin can be used as a first-line vasopressor agent in postcardiac surgery vasoplegic shock and improves clinical outcomes.


Assuntos
Procedimentos Cirúrgicos Cardíacos , Norepinefrina/farmacologia , Complicações Pós-Operatórias/tratamento farmacológico , Choque/tratamento farmacológico , Vasoplegia/tratamento farmacológico , Vasopressinas/farmacologia , Brasil , Método Duplo-Cego , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Choque/complicações , Resultado do Tratamento , Vasoconstritores/farmacologia , Vasoplegia/complicações
20.
Photomed Laser Surg ; 35(2): 87-91, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-27898268

RESUMO

BACKGROUND AND OBJECTIVES: The most common injury to the heart valve with rheumatic involvement is mitral stenosis, which is the reason for a big number of cardiac operations in Brazil. Commissurotomy is the traditional technique that is still widely used for this condition, although late postoperative restenosis is concerning. This study's purpose was to compare the histological findings of porcine cusp mitral valves treated in vitro with commissurotomy with a scalpel blade to those treated with high-power laser (HPL) cutting, using appropriate staining techniques. MATERIALS AND METHODS: Five mitral valves from healthy swine were randomly divided into two groups: Cusp group (G1), cut with a scalpel blade (n = 5), and Cusp group (G2), cut with a laser (n = 5). G2 cusps were treated using a diode laser (λ = 980 nm, power = 9.0 W, time = 12 sec, irradiance = 5625 W/cm2, and energy = 108 J). RESULTS: In G1, no histological change was observed in tissue. A hyaline basophilic aspect was focally observed in G2, along with a dark red color on the edges and areas of lower birefringence, when stained with hematoxylin-eosin, Masson's trichrome, and Sirius red. Further, the mean distances from the cutting edge in cusps submitted to laser application and stained with Masson's trichrome and Sirius red were 416.7 and 778.6 µm, respectively, never overcoming 1 mm in length. CONCLUSIONS: Thermal changes were unique in the group submitted to HPL and not observed in the cusp group cut with a scalpel blade. The mean distance of the cusps' collagen injury from the cutting edge was less than 1 mm with laser treatment. Additional studies are needed to establish the histological evolution of the laser cutting and to answer whether laser cutting may avoid valvular restenosis better than blade cutting.


Assuntos
Eletrocirurgia/instrumentação , Terapia a Laser/métodos , Valva Mitral/patologia , Valva Mitral/cirurgia , Animais , Biópsia por Agulha , Distribuição de Qui-Quadrado , Eletrocirurgia/métodos , Imuno-Histoquímica , Técnicas In Vitro , Modelos Animais , Sensibilidade e Especificidade , Suínos
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