Factors associated with reoperation due to bleeding and outcomes after cardiac surgery: a prospective cohort study.

OBJECTIVE: Identify the incidence and factors associated with reoperation due to bleeding in the postoperative of a cardiac surgery, in addition to the clinical outcomes of patients. METHOD: Prospective cohort study, conducted in an Intensive Care Unit (ICU), with adult patients undergoing cardiac surgery. Patients diagnosed with coagulopathies were excluded. The patients were followed up from hospitalization to hospital discharge. RESULTS: A total of 682 patients were included, and the incidence of reoperation was 3.4%. The factors associated with reoperation were history of renal failure (p = 0.005), previous use of anticoagulant (p = 0.036), higher intraoperative heart rate (p = 0.015), need for transfusion of blood component during intraoperative (p = 0.040), and higher SAPS 3 score (p < 0.001). The outcomes associated with reoperation were stroke and cardiac arrest. CONCLUSÃO: Reoperation was an event associated with greater severity, organic dysfunction, and worse clinical outcomes, but there was no difference in mortality between the groups.

Factors associated with reoperation due to bleeding and outcomes after cardiac surgery: a prospective cohort study / Factores asociados con la reintervención por sangrado y desenlaces después de cirugía cardiaca: un estudio de cohorte prospectivo / Fatores associados à reoperação por sangramento e desfechos após cirurgia cardíaca: estudo de coorte prospectivo

ABSTRACT Objective: Identify the incidence and factors associated with reoperation due to bleeding in the postoperative of a cardiac surgery, in addition to the clinical outcomes of patients. Method: Prospective cohort study, conducted in an Intensive Care Unit (ICU), with adult patients undergoing cardiac surgery. Patients diagnosed with coagulopathies were excluded. The patients were followed up from hospitalization to hospital discharge. Results: A total of 682 patients were included, and the incidence of reoperation was 3.4%. The factors associated with reoperation were history of renal failure (p = 0.005), previous use of anticoagulant (p = 0.036), higher intraoperative heart rate (p = 0.015), need for transfusion of blood component during intraoperative (p = 0.040), and higher SAPS 3 score (p < 0.001). The outcomes associated with reoperation were stroke and cardiac arrest. Conclusão: Reoperation was an event associated with greater severity, organic dysfunction, and worse clinical outcomes, but there was no difference in mortality between the groups.

RESUMEN Objetivo: Identificar la incidencia y los factores asociados con la reintervención por sangrado en el postoperatorio de cirugía cardiaca, además de los resultados clínicos de los pacientes. Método: Estudio de cohorte prospectivo, realizado en una Unidad de Cuidados Intensivos, con pacientes adultos sometidos a cirugía cardiaca. Se excluyeron a los pacientes con diagnóstico de coagulopatías. Los pacientes tuvieron un seguimiento efectuado desde el ingreso hasta el alta hospitalaria. Resultados: Se incluyeron a 682 pacientes, y la incidencia de reintervención fue del 3,4%. Los factores asociados a la reintervención fueron antecedentes de insuficiencia renal (p = 0,005), uso previo de anticoagulante (p = 0,036), mayor frecuencia cardiaca intraoperatoria (p = 0,015), necesidad de transfusión de hemocomponentes en el intraoperatorio (p = 0,040) y mayor puntaje en SAPS 3 (p < 0,001). Los desenlaces asociados con la reintervención fueron accidente cerebrovascular y paro cardiorrespiratorio. Conclusión: La reintervención fue un evento asociado con mayor gravedad, disfunción orgánica y peores desenlaces clínicos, pero no hubo diferencia en la mortalidad entre los grupos.

RESUMO Objetivo: Identificar a incidência e os fatores associados à reoperação devido sangramento no pós-operatório de cirurgia cardíaca, além dos desfechos clínicos dos pacientes. Método: Estudo de coorte prospectivo, realizado em Unidade de Terapia Intensiva (UTI), com pacientes adultos submetidos à cirurgia cardíaca. Foram excluídos pacientes com diagnóstico de coagulopatias. Os pacientes foram acompanhados desde a internação até a saída hospitalar. Resultados: Foram incluídos 682 pacientes e a incidência de reoperação foi 3,4 %. Os fatores associados à reoperação foram: histórico de insuficiência renal (p = 0,005), uso prévio de anticoagulante (p = 0,036), maior frequência cardíaca intraoperatória (p = 0,015), necessidade de transfusão de hemocomponentes no intraoperatório (p = 0,040) e maior pontuação no SAPS 3 (p < 0,001). Os desfechos associados a reoperação foram: acidente vascular encefálico e parada cardiorrespiratória. Conclusão: A reoperação foi um evento associado a maior gravidade, disfunção orgânica, e piores desfechos clínicos, porém não houve diferença de mortalidade entre os grupos.

Incidence of pressure injuries and risk factors in a paediatric surgical intensive care unit: a prospective cohort study.

OBJECTIVES: The aim of the study was to evaluate the incidence of, and risk factors for, the occurrence of pressure injuries (PIs) in a paediatric surgical intensive care unit (ICU). METHOD: This is a prospective cohort study of 153 children in the postoperative period. Patients were assessed daily by physical examination and data were collected. All independent variables were included in a logistic regression. RESULTS: The mean age of the cohort was 2 years, and the incidence of PI was 15.7%. According to the Braden Q Scale, 58.2% of patients were at high risk of developing PI; 79.3% of PIs were related to immobility and 69.0% were at stage 1. Risk factors were ICU length of stay and the number of medical devices used. CONCLUSION: The incidence of PI was high because patients were mostly at a considerable risk of developing a PI. PI was associated with several factors, especially length of ICU stay and number of devices, both of which are indirect indicators of the severity of patient condition and healthcare costs.

Management of peripherally inserted central catheter use in an intensive care unit of a teaching hospital in Brazil: a best practice implementation project.

OBJECTIVE: This project aimed to promote evidence-based practice in the management of peripherally inserted central venous catheters (PICCs) in pediatric and adult patients in an intensive care unit (ICU). INTRODUCTION: A PICC provides secure vascular access to medication, blood and nutrition administration. However, their use in the ICU is limited. Gaps in training and education in the use of these catheters are barriers to improving practice and safety. METHODS: The project was conducted in an ICU of a cardiology teaching hospital in São Paulo, Brazil. The Joanna Briggs Institute Practical Application of Clinical Evidence System and Getting Research into Practice audit tools were used. A baseline audit of the management of PICCs in pediatric and adult patients was conducted, with a sample size of 22 patients and 180 nursing staff. After an educational program, a follow-up audit involving 14 patients and 180 nursing staff was conducted using the same audit criteria. RESULTS: The baseline audit indicated that PICC management concerning flushing had poor compliance of 2-20%. The results of the criteria related to the change in administration sets, including secondary sets and add-on devices, had better results, with moderate (65%) to high (100%) compliance. The follow-up audit showed improvement in all 10 criteria. Criteria related to flushing achieved 83% to 89% compliance; criteria related to dressing and change of administration sets achieved 100% compliance. CONCLUSIONS: Increased compliance with evidence-based best practices was achieved in all assessed audit criteria. The criteria that reached the highest compliance with best practice recommendations were related to the prevention of bloodstream infection and loss of the PICC due to obstruction. Future audits are planned to ensure sustainability.

Effectiveness of teaching strategies on the development of critical thinking in undergraduate nursing students: a meta-analysis.

OBJECTIVE: To evaluate the effectiveness of teaching strategies used for development of critical thinking (CT) in undergraduate nursing students. METHOD: Systematic review with meta-analysis based on the recommendations of the Joanna Briggs Institute . Searches were conducted in the following databases: PubMed, CINAHL, EMBASE, Web of Science, SCOPUS, LILACS, Cochrane CENTRAL, PsycINFO, ERIC, and a database of theses from four continents. The initial selection and evaluation of studies and assessment of methodological quality was performed by two reviewers independently. RESULTS: Twelve randomized clinical trials were included in the study. In the meta-analysis of the four studies included that evaluated the strategy of problem-based learning (PBL), compared to lectures, the effectiveness of PBL was demonstrated with statistical significance (SMD = 0.21 and 95% CI = 0.01 to 0.42; p = 0.0434) for the development of CT in undergraduate nursing students, and the studies were homogeneous (chi-square = 6.10, p = 0.106). CONCLUSION: The effectiveness of PBL was demonstrated in the increase of overall CT scores. Further studies need to be conducted in order to develop, implement and evaluate teaching strategies that are guided in high methodological rigor, and supported in theoretical models of teaching and learning. OBJETIVO: Avaliar a efetividade das estratégias de ensino utilizadas para o desenvolvimento do pensamento crítico (PC) em estudantes de graduação em Enfermagem. MÉTODO: Revisão sistemática com metanálise baseada nas recomendações do Joanna Briggs Institute. A busca foi realizada nas bases de dados PubMed, CINAHL, EMBASE, Web of Science, SCOPUS, LILACS, Cochrane CENTRAL, PsycINFO e ERIC e de banco de teses dos quatro continentes. A seleção e avaliação inicial dos estudos e a avaliação da qualidade metodológica foi realizada por dois revisores de forma independente. RESULTADOS: Incluídos 12 ensaios clínico randomizados. Na metanálise, dos quatro estudos incluídos que avaliaram a estratégia do Problem Based Learning (PBL), comparada a palestras, foi demonstrada a efetividade do PBL, estatisticamente significativa (SMD=0,21 e 95% IC=0,01-0,42; p=0,0434) para o desenvolvimento do PC em estudantes de graduação em Enfermagem e os estudos eram homogêneos (Qui-quadrado=6,10, p=0,106). CONCLUSÃO: Foi demonstrada a efetividade do PBL no aumento dos escores de PC global. Novos estudos precisam ser feitos com o objetivo de desenvolver, implementar e avaliar estratégias de ensino, que sejam pautadas em alto rigor metodológico e amparadas em modelos teóricos de ensino-aprendizagem.

Effectiveness of teaching strategies on the development of critical thinking in undergraduate nursing students: a meta-analysis / Efectividad de las estrategias de enseñanza en el desarrollo del pensamiento crítico de estudiantes de pregrado de enfermería: un metaanálisis / Efetividade das estratégias de ensino no desenvolvimento do pensamento crítico de graduandos de Enfermagem: uma metanálise

Abstract OBJECTIVE To evaluate the effectiveness of teaching strategies used for development of critical thinking (CT) in undergraduate nursing students. METHOD Systematic review with meta-analysis based on the recommendations of the Joanna Briggs Institute . Searches were conducted in the following databases: PubMed, CINAHL, EMBASE, Web of Science, SCOPUS, LILACS, Cochrane CENTRAL, PsycINFO, ERIC, and a database of theses from four continents. The initial selection and evaluation of studies and assessment of methodological quality was performed by two reviewers independently. RESULTS Twelve randomized clinical trials were included in the study. In the meta-analysis of the four studies included that evaluated the strategy of problem-based learning (PBL), compared to lectures, the effectiveness of PBL was demonstrated with statistical significance (SMD = 0.21 and 95% CI = 0.01 to 0.42; p = 0.0434) for the development of CT in undergraduate nursing students, and the studies were homogeneous (chi-square = 6.10, p = 0.106). CONCLUSION The effectiveness of PBL was demonstrated in the increase of overall CT scores. Further studies need to be conducted in order to develop, implement and evaluate teaching strategies that are guided in high methodological rigor, and supported in theoretical models of teaching and learning.

Resumen OBJETIVO Evaluar la efectividad de las estrategias de enseñanza utilizadas para el desarrollo del pensamiento crítico (PC) de estudiantes de pregrado de Enfermería. MÉTODO Revisión sistemática con metaanálisis basado en las recomendaciones del Joanna Briggs Institute. La búsqueda fue realizada en las bases de datos PubMed, CINAHL, EMBASE, Web of Science, SCOPUS, LILACS, Cochrane CENTRAL, PsycINFO y ERIC, y de banco de tesis de los cuatro continentes. La selección y evaluación inicial de los estudios y la evaluación de la calidad metodológica las llevó a cabo dos revisores de modo independiente. RESULTADOS Incluidos 12 ensayos clínicos randomizados. En el metaanálisis, de los cuatro estudios incluidos que evaluaron la estrategia del Problem Based Learning (PBL), comparada con conferencias, fue demostrada la efectividad del PBL, estadísticamente significativa (SMD=0,21 y el 95% IC=0,01-0,42; p=0,0434) para el desarrollo del PC en estudiantes de pregrado en Enfermería, y los estudios eran homogéneos (Chi cuadrado=6,10, p=0,106). CONCLUSIÓN Fue demostrada la efectividad del PBL en el incremento de los puntajes de PC global. Se necesitan hacer nuevos estudios con el fin de desarrollar, implantar y evaluar estrategias de enseñanza que se pauten en un alto rigor metodológico y se amparen en modelos teóricos de enseñanza-aprendizaje.

Resumo OBJETIVO Avaliar a efetividade das estratégias de ensino utilizadas para o desenvolvimento do pensamento crítico (PC) em estudantes de graduação em Enfermagem. MÉTODO Revisão sistemática com metanálise baseada nas recomendações do Joanna Briggs Institute. A busca foi realizada nas bases de dados PubMed, CINAHL, EMBASE, Web of Science, SCOPUS, LILACS, Cochrane CENTRAL, PsycINFO e ERIC e de banco de teses dos quatro continentes. A seleção e avaliação inicial dos estudos e a avaliação da qualidade metodológica foi realizada por dois revisores de forma independente. RESULTADOS Incluídos 12 ensaios clínico randomizados. Na metanálise, dos quatro estudos incluídos que avaliaram a estratégia do Problem Based Learning (PBL), comparada a palestras, foi demonstrada a efetividade do PBL, estatisticamente significativa (SMD=0,21 e 95% IC=0,01-0,42; p=0,0434) para o desenvolvimento do PC em estudantes de graduação em Enfermagem e os estudos eram homogêneos (Qui-quadrado=6,10, p=0,106). CONCLUSÃO Foi demonstrada a efetividade do PBL no aumento dos escores de PC global. Novos estudos precisam ser feitos com o objetivo de desenvolver, implementar e avaliar estratégias de ensino, que sejam pautadas em alto rigor metodológico e amparadas em modelos teóricos de ensino-aprendizagem.

Uso de la membrana de oxigenación extracorpórea en una paciente con trasplante pulmonar: cuidados de Enfermería / Uso da membrana de oxigenação extracorpórea em uma paciente pós-transplante pulmonar: cuidados de enfermagem / Use of extracorporeal membrane oxygenation in a post-lung transplant patient: nursing care

Se trata de un relato de experiencia de un caso sin precedentes en Brasil acerca de la sistematización de los cuidados de enfermería aplicados a una paciente en asistencia circulatoria mecánica con membrana de oxigenación extracorpórea en el postoperatorio de un trasplante de pulmón. Se establecieron 18 diagnósticos de enfermería y las 94 conductas implementadas abarcaron: cuidados con el circuito de asistencia, monitorización hemodinámica y control de las pruebas de laboratorio. Los principales resultados fueron que el paciente presentaba: un mejor intercambio de gases, mantenimiento de la estabilidad hemodinámica y ausencia de efectos adversos relacionados con el tratamiento, como el sangrado y reducción de la perfusión de la extremidad de la cánula venosa. La sistematización de la atención establecida mostró agregar conocimiento científico, orientación a la práctica clínica y atención integral (AU)

Trata-se de um relato de experiência de caso inédito no Brasil sobre a sistematização da assistência da Enfermagem aplicada a uma paciente em assistência circulatória mecânica com membrana de oxigenação extracorpórea no pós-operatório de transplante pulmonar. Foram estabelecidos 18 diagnósticos de Enfermagem e as 94 condutas implementadas envolveram: cuidados com o circuito da assistência, monitorização hemodinâmica e controle de exames laboratoriais. Os principais resultados esperados foram que a paciente apresentasse: troca gasosa melhorada, manutenção da estabilidade hemodinâmica e ausência dos efeitos adversos relacionados à terapia, tais como, sangramento e prejuízo à perfusão do membro de inserção da cânula venosa. A sistematização da assistência estabelecida mostrou agregar conhecimento científico, orientação à prática clínica e integralidade do cuidado

This is an experience report of unprecedented case in Brazil on the nursing care system applied to a patient in mechanical circulatory support with extracorporeal membrane oxygenation in postoperative lung transplantation. Were established 18 diagnoses and 94 nursing behaviors implemented involved: care assistance circuit, hemodynamic monitoring and control of laboratory tests. The main outcomes were that the patient had: improved gas exchange, maintenance of hemodynamic stability and absence of adverse effects related to treatment, such as bleeding and reduction in limb perfusion with cannula. The care system established showed aggregate scientific knowledge, guidance to clinical practice and comprehensive care (AU)

Avaliação da carga de trabalho no pós-operatório de cirurgia cardíaca segundo o Nursing Activities Score / Evaluación de la carga de trabajo en el postoperatorio de cirugía cardíaca según la Nursing Activities Score / Assessment of workload in the postoperative period of cardiac surgery according to the Nursing Activities Score

RESUMO Objetivo Identificar os fatores associados à carga de trabalho de enfermagem no cuidado a pacientes no pós-operatório de cirurgia cardíaca. Método Estudo de coorte prospectivo, conduzido com 187 pacientes da Unidade de Terapia Intensiva Cirúrgica (UTI) do Instituto do Coração. Os dados foram coletados nas primeiras 24 e 72 horas do paciente na UTI. A variável dependente foi a carga de trabalho calculada por meio do Nursing Activities Score (NAS) e as independentes foram de natureza demográfico-clínicas e escores de morbimortalidade. Para análise dos dados utilizou-se os testes de Wilcoxon-Mann-Whitney e de correlação de Spearman, e a regressão linear com modelo de efeitos mistos. Resultados A maioria dos pacientes era do sexo masculino (59,4%), com média de idade de 61 anos (±12,7) e 43,9% desenvolveram algum tipo de complicação no pós-operatório. Nas 24 horas, a carga de trabalho foi de 82,4% (±3,4) e foi de 58,1% (±3,4) nas 72 horas. Os fatores associados ao aumento do NAS foram: tempo de internação do paciente na UTI (p=0,036) e a presença de complicações (p<0,001). Conclusão A gravidade do paciente nas 24 horas, em oposição a inúmeros estudos, não influenciou no aumento da carga de trabalho, a qual se mostrou associada ao tempo de internação e às complicações.

RESUMEN Objetivo Identificar los factores asociados con la carga de trabajo de enfermería en el cuidado de los pacientes después de la cirugía cardíaca. Método Estudio prospectivo de cohorte, realizado con 187 pacientes de la Unidad Quirúrgica de Cuidados Intensivos (UCI) del Instituto do Coração. Los datos fueron recogidos en las primeras 24 y 72 horas el paciente en la UCI. La variable dependiente fue la carga de trabajo calculada por el Nursing Activities Score (NAS) y eran independientes de la naturaleza y de mortalidad puntajes demográficas y clínicas. Para el análisis de los datos se utilizó la prueba de Wilcoxon-Mann-Whitney y Spearman correlación y de regresión lineal con el modelo de efectos mixtos. Resultados La mayoría de los pacientes eran varones (59,4%) con una edad media de 61 años (±12,7) y 43,9% desarrollaron algún tipo de complicación en el postoperatorio. Dentro de 24 horas, la carga de trabajo fue 82,4% (±3,4) y 58,1% (±3,4) en 72 horas. Los factores asociados con el aumento de NAS fueron: longitud del paciente de la estancia en la UCI (p=0,036) y la presencia de complicaciones (p<0,001). Conclusión La gravedad de la paciente dentro de 24 horas, a diferencia de numerosos estudios, no afectó a la mayor carga de trabajo, que se asoció a la duración de la estancia y complicaciones.

ABSTRACT Objective Identify factors associated with the workload of nursing care for patients in the postoperative period of cardiac surgery. Method Prospective cohort study conducted with 187 patients in the surgical intensive care unit (ICU) of the Instituto do Coração(Heart Institute) in São Paulo-Brazil. Data were collected at 24 and 72 hours of the patients’ admittance in the ICU. The dependent variable was workload as calculated by the Nursing Activities Score (NAS). The independent variables were demographic and clinical, as well as mortality scores. For data analysis, the Wilcoxon-Mann-Whitney test and Spearman correlation were used, and linear regression with mixed effects model. Results The majority of patients were male (59.4%), with a mean age of 61 years (±12.7), and 43.9% developed some kind of complication in the postoperative period. In the first 24 hours, the workload was 82.4% (±3.4), and 58.1% (±3.4) in 72 hours. Factors associated with increased NAS were: patient’s length of stay in the ICU (p=0.036) and the presence of complications (p<0.001). Conclusion In contrast to numerous other studies, the severity of the patient’s condition in the first 24 hours of the postoperative period did not increase workload, the increase was associated with length of stay in the ICU and complications.

Assessment of workload in the postoperative period of cardiac surgery according to the Nursing Activities Score. / Avaliação da carga de trabalho no pós-operatório de cirurgia cardíaca segundo o Nursing Activities Score.

Objective Identify factors associated with the workload of nursing care for patients in the postoperative period of cardiac surgery. Method Prospective cohort study conducted with 187 patients in the surgical intensive care unit (ICU) of the Instituto do Coração(Heart Institute) in São Paulo-Brazil. Data were collected at 24 and 72 hours of the patients' admittance in the ICU. The dependent variable was workload as calculated by the Nursing Activities Score (NAS). The independent variables were demographic and clinical, as well as mortality scores. For data analysis, the Wilcoxon-Mann-Whitney test and Spearman correlation were used, and linear regression with mixed effects model. Results The majority of patients were male (59.4%), with a mean age of 61 years (±12.7), and 43.9% developed some kind of complication in the postoperative period. In the first 24 hours, the workload was 82.4% (±3.4), and 58.1% (±3.4) in 72 hours. Factors associated with increased NAS were: patient's length of stay in the ICU (p=0.036) and the presence of complications (p<0.001). Conclusion In contrast to numerous other studies, the severity of the patient's condition in the first 24 hours of the postoperative period did not increase workload, the increase was associated with length of stay in the ICU and complications.

[Strategies for prevention of acute kidney injury in cardiac surgery: an integrative review]. / Estratégias de prevenção da lesão renal aguda em cirurgia cardíaca: revisão integrativa.

Acute kidney injury is a common complication after cardiac surgery and is associated with increased morbidity and mortality and increased length of stay in the intensive care unit. Considering the high prevalence of acute kidney injury and its association with worsened prognosis, the development of strategies for renal protection in hospitals is essential to reduce the associated high morbidity and mortality, especially for patients at high risk of developing acute kidney injury, such as patients who undergo cardiac surgery. This integrative review sought to assess the evidence available in the literature regarding the most effective interventions for the prevention of acute kidney injury in patients undergoing cardiac surgery. To select the articles, we used the CINAHL and MedLine databases. The sample of this review consisted of 16 articles. After analyzing the articles included in the review, the results of the studies showed that only hydration with saline has noteworthy results in the prevention of acute kidney injury. The other strategies are controversial and require further research to prove their effectiveness.

Estratégias de prevenção da lesão renal aguda em cirurgia cardíaca: revisão integrativa / Strategies for prevention of acute kidney injury in cardiac surgery: an integrative review

A lesão renal aguda é uma complicação frequente após cirurgia cardíaca, estando associada ao aumento de morbidade e mortalidade, e ao maior tempo de permanência em unidade de terapia intensiva. Considerando a alta prevalência e a associação da lesão renal aguda com o pior prognóstico, o desenvolvimento de estratégias de proteção renal torna-se indispensável, especialmente em pacientes com alto risco para o desenvolvimento de lesão renal aguda, como aqueles submetidos à cirurgia cardíaca, com o intuito de minimizar a incidência da lesão renal aguda no âmbito hospitalar, reduzindo, dessa forma, a alta morbimortalidade. A presente revisão integrativa teve por objetivo avaliar as evidências disponíveis na literatura sobre as intervenções mais eficazes na prevenção da lesão renal aguda em pacientes submetidos à cirurgia cardíaca. Para seleção dos artigos, utilizaram-se as bases de dados CINAHL e MedLine. A amostra desta revisão constituiu-se de 16 artigos. Após a análise dos artigos incluídos na revisão, os resultados dos estudos apontaram que apenas a hidratação com solução salina apresenta resultados consideráveis na prevenção de lesão renal aguda. As demais estratégias são controversas e necessitam de mais pesquisas para comprovar eficácia.

Acute kidney injury is a common complication after cardiac surgery and is associated with increased morbidity and mortality and increased length of stay in the intensive care unit. Considering the high prevalence of acute kidney injury and its association with worsened prognosis, the development of strategies for renal protection in hospitals is essential to reduce the associated high morbidity and mortality, especially for patients at high risk of developing acute kidney injury, such as patients who undergo cardiac surgery. This integrative review sought to assess the evidence available in the literature regarding the most effective interventions for the prevention of acute kidney injury in patients undergoing cardiac surgery. To select the articles, we used the CINAHL and MedLine databases. The sample of this review consisted of 16 articles. After analyzing the articles included in the review, the results of the studies showed that only hydration with saline has noteworthy results in the prevention of acute kidney injury. The other strategies are controversial and require further research to prove their effectiveness.

High levels of B-type natriuretic peptide predict weaning failure from mechanical ventilation in adult patients after cardiac surgery.

OBJECTIVE: The failure to wean from mechanical ventilation is related to worse outcomes after cardiac surgery. The aim of this study was to evaluate whether the serum level of B-type natriuretic peptide is a predictor of weaning failure from mechanical ventilation after cardiac surgery. METHODS: We conducted a prospective, observational cohort study of 101 patients who underwent on-pump coronary artery bypass grafting. B-type natriuretic peptide was measured postoperatively after intensive care unit admission and at the end of a 60-min spontaneous breathing test. The demographic data, hemodynamic and respiratory parameters, fluid balance, need for vasopressor or inotropic support, and length of the intensive care unit and hospital stays were recorded. Weaning failure was considered as either the inability to sustain spontaneous breathing after 60 min or the need for reintubation within 48 h. RESULTS: Of the 101 patients studied, 12 patients failed the weaning trial. There were no differences between the groups in the baseline or intraoperative characteristics, including left ventricular function, EuroSCORE and lengths of the cardiac procedure and cardiopulmonary bypass. The B-type natriuretic peptide levels were significantly higher at intensive care unit admission and at the end of the breathing test in the patients with weaning failure compared with the patients who were successfully weaned. In a multivariate model, a high B-type natriuretic peptide level at the end of a spontaneous breathing trial was the only independent predictor of weaning failure from mechanical ventilation. CONCLUSIONS: A high B-type natriuretic peptide level is a predictive factor for the failure to wean from mechanical ventilation after cardiac surgery. These findings suggest that optimizing ventricular function should be a goal during the perioperative period.

High levels of B-type natriuretic peptide predict weaning failure from mechanical ventilation in adult patients after cardiac surgery

OBJECTIVE: The failure to wean from mechanical ventilation is related to worse outcomes after cardiac surgery. The aim of this study was to evaluate whether the serum level of B-type natriuretic peptide is a predictor of weaning failure from mechanical ventilation after cardiac surgery. METHODS: We conducted a prospective, observational cohort study of 101 patients who underwent on-pump coronary artery bypass grafting. B-type natriuretic peptide was measured postoperatively after intensive care unit admission and at the end of a 60-min spontaneous breathing test. The demographic data, hemodynamic and respiratory parameters, fluid balance, need for vasopressor or inotropic support, and length of the intensive care unit and hospital stays were recorded. Weaning failure was considered as either the inability to sustain spontaneous breathing after 60 min or the need for reintubation within 48 h. RESULTS: Of the 101 patients studied, 12 patients failed the weaning trial. There were no differences between the groups in the baseline or intraoperative characteristics, including left ventricular function, EuroSCORE and lengths of the cardiac procedure and cardiopulmonary bypass. The B-type natriuretic peptide levels were significantly higher at intensive care unit admission and at the end of the breathing test in the patients with weaning failure compared with the patients who were successfully weaned. In a multivariate model, a high B-type natriuretic peptide level at the end of a spontaneous breathing trial was the only independent predictor of weaning failure from mechanical ventilation. CONCLUSIONS: A high B-type natriuretic peptide level is a predictive factor for the failure to wean from mechanical ventilation after cardiac surgery. These findings suggest that optimizing ventricular function should be a goal during the perioperative period.

Eficácia das estatinas utilizadas na prevenção secundária de eventos cardiovasculares na síndrome coronariana aguda: revisão sistemática / Effectiveness of statins used in secondary prevention of cardiovascular events in acute coronary syndrome: systematic review

Contexto: a eficácia dos inibidores da 3-hidróxi-3metilglutaril-coenzima (HMG-CoA) redutase (estatinas) na prevenção primária e secundária na doença cardiovascular é bem estabelecida na literatura. Contudo os benefícios destes fármacos na prevenção secundária da mortalidade e eventos cardiovasculares no paciente com Síndrome Coronariana Aguda (SCA), ainda não foram completamente esclarecidos. Objetivo: analisar os benefícios do uso das estatinas comparadas a placebo ou cuidados usuais nos pacientes com SCA quanto a redução de mortalidade (por todas as causas), infarto agudo do miocárdio (fatal e não-fatal), intervenção coronária percutânea, revascularização cirúrgica do miocárdio e hospitalização. Base de Dados: trata-se de uma revisão sistemática finalizada em 29 de Janeiro de 2012, cuja seleção dos ensaios clínicos controlados e randomizados (ECCR) foi realizada nas bases de dados eletrônicas PubMed/MEDLINE, EMBASE, Cochrane Central, LILACS e Banco de Teses - CAPES. Coleta de Dados: a extração das informações sobre características basais dos estudos incluídos, avaliação da qualidade metodológica e desfechos não combinados foi realizada por dois investigadores de forma independente. Resultados: foram incluídos na metanálise 18 ECCR, que envolveram 15.370 pacientes com SCA. O uso das estatinas mostrou benefício na redução da mortalidade por todas as causas, diferença de risco (rd) = -0,0066 (IC 95% -0,0121 a -0,001; P=0,8459; 'I POT.2' =0%) e hospitalização rd = -0,0101 (IC 95% -0,0188 a -0,0014; P=2,1496; 'I POT.2'=76%). Quanto aos desfechos mortalidade cardiovasular, infarto agudo do miocárdio fatal e não fatal, intervenção coronária percutânea e revascularização cirúrgica do miocárdio não houve diferença estatisticamente significante entre os grupos estatinas versus placebo ou cuidados usuais. Conclusões: as evidências disponíveis apontam que as estatinas causam redução na mortalidadepor todas as causas e na hospitalização, porém não demonstram diferença quando comparadas ao placebo ou cuidados usuais em outros eventos de importante magnitude clínica e econômica no âmbito dos serviços de saúde e da sociedade.

Context: the effectiveness of inhibitors of 3-Hydroxy-3-methylglutaryl-Coenzyme (HMG-CoA) reducatse (statins) in primary and secondary prevention of cardiovascular disease is well established in the literature. However, the benefits of these drugs in secondary prevention of mortality and cardiovascular events in patients with Acute Coronary Syndrome (ACS) have still not been fully clarified. Objective: to analyze the benefits of using statins compared to placebo or usual care in patients with SCA on the reduction of mortality (from all causes), myorcardial infarction (fatal and non-fatal), percutaneous coronary intervention, revascularization and hospitalization. Database: this is a systematic review completed on January 29, 2012, whose selection of randomized and controlled clinical trials (ECCR) was held in electronic databases MEDLINE, EMBASE, PubMed/Cochrane Central, LILACS and These database-CAPES. Data collection: two researchers performed the extraction of information about Basal characteristics of included studies, evaluation of methodological quality and outcomes not independently combined. Results: were included in the meta-analysis, involving 18 ECCR 15,370 patients with SCA. The use of statins has shown benefit in reducing mortality from all causes, risk difference (rd) = -0.0066 (CI 95% -0.0121 to -0.001; P = 0.8459; 'I POT.2' =76%). As to cardiovascular, myocardial infarction fatal and non-fatal coronary intervention, and percutaneous revascularization mortality outcomes, there was no statistically significant difference between the groups statins verus placebo or usual care. Conclusions: the available evidence suggests that statins cause a reduction in mortality from all causes and hospitalization, but do not demonstrate difference when compared to placeb or usual care in other important events within cost-effective clinic and economic magnitude of health services and society.