OBJECTIVETo evaluate the effects of resistance exercise applied early after coronary artery bypass grafting.METHODSIt is a randomized controlled trial with 34 patients undergoing coronary artery bypass grafting between August 2013 and May 2014. Patients were randomized into two groups by simple draw: a control group (n=17), who received conventional physical therapy and an intervention group (n=17), who received, additionally, resistance exercise. Pulmonary function and functional capacity were evaluated in preoperative period and hospital discharge by spirometry and the six-minute walk test. For statistical analysis, we used the following tests: Shapiro-Wilk, Mann-Whitney, Student's t and Fisher's exact. Variables with P<0.05 were considered significant.RESULTSGroups were homogeneous in terms of demographic, clinical and surgical variables. Resistance exercise exerted no effect on pulmonary function of intervention group compared to control group. However, intervention group maintained functional capacity at hospital discharge measured by percentage of predict distance in 6MWT (54.122.7% vs. 52.515.5%, P=0.42), while control group had a significant decrease (59.211.1% vs. 50.69.9%, P<0.016).CONCLUSIONOur results indicate that resistance exercise, applied early, may promote maintenance of functional capacity on coronary artery bypass grafting patients, having no impact on pulmonary function when compared to conventional physical therapy.

380Rev Bras Cir Cardiovasc | Braz J Cardiovasc SurgRev Bras Cir Cardiovasc 2013;28(3):380-5 Borges DL, et al. -Effects of different PEEP levels on respiratory mechanics and oxygenation after coronary artery bypass grafting RBCCV 44205-1484 DOI: 10.5935/1678 Effects of different PEEP levels on respiratory mechanics and oxygenation after coronary artery bypass grafting Rev Bras Cir Cardiovasc 2013;28(3):380-5

Introduction: Hypoxemia is a frequent pulmonary complication in the postoperative coronary artery bypass graft. Detection of factors associated with their occurrence may indicate patients at risk for this complication, which allows tracing specific therapeutic and consequently reduce morbidity and mortality.Objective: To identify related factors to hypoxemia occurrence in immediate coronary artery bypass graft postoperative.Methods: In this retrospective cohort study, we studied 100 patients submitted to elective om-pump artery bypass graft , between April 2010 and December 2011, at a reference university hospital for cardiac surgery in the state of Maranhão. It was considered hypoxemia gas exchange ratio less than or equal to 300 mmHg. Associated variables with perioperative hypoxemia were defined by the Student T test, G or Mann-Whitney tests, Chi-square, or Fisher's exact test and multiple linear regression.Results: Among studied variables, high body mass index (P=0.036) and smoking (P=0.024) were significantly associated with hypoxemia in the immediate coronary artery bypass graft postoperative. Hypoxemia incidence in this period was 55% and did not affects mechanical ventilation duration and Intensive Care Unit lengh of stay.Conclusion: In this sample, body mass index and smoking were associated to hypoxemia. These data reinforce the importance of clinical assessment to identify patients at risk for this complication, considering its high incidence in immediate postoperative period. Descriptors: Oxygen level. Postoperative period. Myocardial revascularization.Resumo Introdução: A hipoxemia é uma complicação pulmonar frequente no pós-operatório de revascularização miocárdica. A detecção de fatores associados a sua ocorrência pode indicar pacientes de risco para essa complicação, o que possibilita traçar terapêuticas específicas e, consequentemente, diminuir a morbimortalidade.Objetivo: Identificar fatores relacionados à ocorrência de hipoxemia no pós-operatório imediato de revascularização miocárdica.Métodos: Nesta coorte retrospectiva, foram estudados 100 365Rev Bras Cir Cardiovasc | Braz J Cardiovasc Surg Rev Bras Cir Cardiovasc 2013;28(3):364-70Santos NP, et al. -Factors associated to hypoxemia in patients undergoing coronary artery bypass graftingAccording to a recent study [7], predictor factors detection may indicate patients at high risk for postoperative hypoxemia that demand mechanical ventilation strategies, in order to prevent and treat pulmonary collapse during intra-operatory period, to minimize hypoxemia impact on mechanical ventilation duration, to reduce mobidity and mortality related to cardiac intervention, to reduce length of stay at Intensive Care Unit (ICU), and hospital costs.This study is designed to analyze factors related to hypoxemia in a specific population of patients undergoing CABG surgery, to determine its incidence in immediate post-operative period, and to evaluate if hypoxemia interfered on mechanical ventilation duration and lengh of stay in ICU.

ObjectiveTo apply the InsCor in patients undergoing cardiac surgery in a university hospital in Brazil's northeast.MethodsIt is a retrospective, quantitative and analytical study, carried out at the University Hospital of the Federal University of Maranhão. InsCor is a remodeling of two risk score models. It evaluates the prediction of mortality through variables such as gender, age, type of surgery or reoperation, exams, and preoperative events. Data from January to December 2015 were collected, using a Physical Therapy Evaluation Form and medical records. Quantitative variables were expressed as mean and standard deviation and qualitative variables as absolute and relative frequencies. Fisher's exact and Kruskal-Wallis tests were applied, considering significant differences when P value was < 0.05. Calibration was performed by Hosmer-Lemeshow test.ResultsOne hundred and forty-eight patients were included. Thirty-six percent were female, with mean age of 54.7±15.8 years and mean body mass index (BMI) equal to 25.6 kg/m2. The most frequent surgery was coronary artery bypass grafting (51.3%). According to InsCor, 73.6% of the patients had low risk, 20.3% medium risk, and only 6.1% high risk. In this sample, 11 (7.4%) patients died. The percentage of death in patients classified as low, medium and high risk was 6.3, 7.1% and 11.1%, respectively.ConclusionInsCor presented easy applicability due to the reduced number of variables analyzed and it showed satisfactory prediction of mortality in this sample of cardiac surgery patients.

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