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Arq. bras. cardiol ; 102(6): 539-548, 06/2014. tab, graf
Article in English | LILACS | ID: lil-712919

ABSTRACT

Background: The applicability of international risk scores in heart surgery (HS) is not well defined in centers outside of North America and Europe. Objective: To evaluate the capacity of the Parsonnet Bernstein 2000 (BP) and EuroSCORE (ES) in predicting in-hospital mortality (IHM) in patients undergoing HS at a reference hospital in Brazil and to identify risk predictors (RP). Methods: Retrospective cohort study of 1,065 patients, with 60.3% patients underwent coronary artery bypass grafting (CABG), 32.7%, valve surgery and 7.0%, CABG combined with valve surgery. Additive and logistic scores models, the area under the ROC (Receiver Operating Characteristic) curve (AUC) and the standardized mortality ratio (SMR) were calculated. Multivariate logistic regression was performed to identify the RP. Results: Overall mortality was 7.8%. The baseline characteristics of the patients were significantly different in relation to BP and ES. AUCs of the logistic and additive BP were 0.72 (95% CI, from 0.66 to 0.78 p = 0.74), and of ES they were 0.73 (95% CI; 0.67 to 0.79 p = 0.80). The calculation of the SMR in BP was 1.59 (95% CI; 1.27 to 1.99) and in ES, 1.43 (95% CI; 1.14 to 1.79). Seven RP of IHM were identified: age, serum creatinine > 2.26 mg/dL, active endocarditis, systolic pulmonary arterial pressure > 60 mmHg, one or more previous HS, CABG combined with valve surgery and diabetes mellitus. Conclusion: Local scores, based on the real situation of local populations, must be developed for better assessment of risk in cardiac surgery. .


Fundamento: A aplicabilidade de escores de risco (ER) internacionais em cirurgia cardíaca (CC) ainda não está bem definida em centros fora da América do Norte e Europa. Objetivo: Avaliar a capacidade do Berstein Parsonnet 2000 (BP) e do EuroSCORE (ES) em predizer mortalidade intra-hospitalar (MIH) em pacientes submetidos a CC em hospital de referência do Brasil e identificar os preditores de risco (PR). Métodos: Coorte retrospectiva de 1.065 pacientes. Foram incluídos dados de cirurgias realizadas entre janeiro de 2007 e julho de 2008, quando 60,3% dos pacientes realizaram CRM, 32,7%, cirurgia valvar, e 7,0%, CRM combinada com cirurgia valvar. Foram calculados os modelos aditivos e logísticos dos escores, a área sob a curva ROC (AUC) e a razão de mortalidade padronizada (RMP). Regressão logística multivariada foi realizada para identificar os PR. Resultados: A MIH da amostra foi de 7,8%. As características basais dos pacientes da amostra foram significativamente diferentes em relação ao BP e ao ES. As AUCs do BP aditivo e logístico foram 0,72 (IC95%; 0,66-0,78 p = 0,74) e as do ES foram 0,73 (IC95% 0,67-0,79 p = 0,80). O cálculo da RMP no BP foi 1,59 (IC95%; 1,27-1,99) e no ES foi 1,43 (IC95%; 1,14-1,79). Sete PR de MIH foram identificados: idade, creatinina sérica > 2,26 mg/dL, endocardite ativa, pressão arterial pulmonar > 60 mmHg, uma ou mais CC, CRM combinada com cirurgia valvar e diabetes melito. Conclusão: Ambos os ER mostraram-se inadequados na avaliação pré-operatória de pacientes submetidos a CC, reforçando a necessidade de se desenvolverem ER baseados na realidade local. .


Subject(s)
Aged , Female , Humans , Male , Middle Aged , Coronary Artery Bypass/mortality , Hospital Mortality , Heart Valve Diseases/surgery , Risk Assessment/methods , Brazil , Logistic Models , Postoperative Complications , Reference Values , Reproducibility of Results , Retrospective Studies , Risk Factors , Sensitivity and Specificity
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