impacto da disfunção renal na evolução intra-hospitalar após cirurgia de revascularização miocárdica impact of renal failure on in-hospital outcomes after coronary artery bypass surgery

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ID: 240257
2011
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Abstract
FUNDAMENTO: A doença renal crônica (DRC) é um marcador de mortalidade na cirurgia de revascularização miocárdica (CRM). OBJETIVO: Avaliar em pacientes com DRC submetidos a CRM as características clínicas e os marcadores de morbimortalidade hospitalar; comparar a evolução intra-hospitalar entre os grupos com e sem DRC, e com e sem desenvolvimento de insuficiência renal aguda (IRA). MÉTODOS: Foram analisadas as CRM isoladas realizadas num hospital público cardiológico de 1999 a 2007. Considerado disfunção renal quando creatinina > 1,5 mg/dl. Avaliaram-se características clínicas, mortalidade e complicações pós-operatórias conforme a função renal. RESULTADOS: De 3.890 pacientes, 362 (9,3%) tinham DRC. Esse grupo apresentava idade mais avançada, maior prevalência de hipertensão, disfunção ventricular esquerda, acidente vascular encefálico (AVE) prévio, doença arterial periférica e triarteriais. No pós-operatório, apresentou maior incidência de AVE (5,5% vs 2,1%), fibrilação atrial (16 vs 8,3%), síndrome de baixo débito cardíaco (14,4% vs 8,5%), maior tempo de internação na unidade de terapia intensiva (4,04 vs 2,83 dias), e maior mortalidade intra-hospitalar (10,5% vs 3,8%). Sexo feminino, tabagismo, diabete e doença vascular periférica e/ou carotídea associaram-se com maior mortalidade no grupo DRC. Pacientes que não desenvolveram IRA pós-operatória apresentaram 3,5% de mortalidade; grupo IRA não dialítica: 35,4%; grupo IRA dialítica: 66,7%. Calculando-se a taxa de filtração glomerular, observou-se aumento da mortalidade conforme o aumento da classe da DRC. CONCLUSÃO: Pacientes com DRC submetidos a CRM constituem população de elevado risco, apresentando maior morbimortalidade. IRA pós-operatória é importante marcador de mortalidade. A taxa de filtração glomerular foi inversamente relacionada com mortalidade.
BACKGROUND: Chronic kidney disease (CKD) is a predictor of increased mortality in patients undergoing coronary artery bypass surgery (CABG). OBJECTIVE: To evaluate the characteristics and predictors of increased mortality in the CKD population submitted to CABG. To compare in-hospital outcomes between patients with and without CKD, and with and without development of acute renal failure (ARF). METHODS: Retrospective analysis of a prospective database of all isolated CABG performed in a single public tertiary hospital from 1999 to 2007. CKD was considered when creatinine > 1.5 mg/dl. Clinical characteristics, mortality and post-operative complications were evaluated according to renal function. RESULTS: Of 3,890 patients, 362 (9.3%) had CKD. This population was older, presented grater prevalence of hypertension, left ventricular dysfunction, previous stroke, peripheral vascular disease and three-vessel disease. In-hospital outcomes revealed greater incidence of stroke (5.5% vs 2.1%), atrial fibrillation (16 vs 8.3%), low cardiac ouput syndrome (14.4% vs 8.5%), longer stay in intensive care unit (4.04 vs 2.83 days), and greater mortality (10.5% vs 3.8%). Logistic regression: female gender, smoking, diabetes and peripheral vascular disease were associated with higher in-hospital mortality within the CKD group. Patients who did not develop post-operative ARF presented 3.5% mortality; non-dialytic ARF: 35.4%; dialytic ARF: 66.7% mortality. Mortality was directly related to the stage of CKD, according to glomerular filtration rate. CONCLUSION: CKD patients submitted to CABG represent a high risk population, with increased incidence of complications and mortality. Post-operative ARF is a strong in-hospital mortality predictor. Glomerular filtration rate was inversely related to mortality.
Reference Key
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Authors ;Roberto Ramos Barbosa;Priscila Feitoza Cestari;Julhano Tiago Capeletti;Gustavo Magnus T. L. S. R. Peres;Tania L. Pozzo Ibañez;Patrícia Viana da Silva;Jorge A. Farran;Vivian Lerner Amato;Pedro Silvio Farsky
Journal revista cubana de ciencias informáticas
Year 2011
DOI
DOI not found
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0066-782X2011001200010
Keywords
morbidity renal insufficiency prognostic myocardial revascularization insuficiencia renal cronica

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