Frequência, preditores clínicos e significado prognóstico da doença arterial coronariana angiográfica em candidatos ao transplante renal

• Autor(a) principal: Seixas, Emerson de Albuquerque [UNESP]
• Data de Publicação: 2016
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/148598
• topic: Chronic renal failure; Renal transplantation; Coronary artery disease; Coronary angiography; Insuficiência renal crônica; Doença coronariana; Transplante renal; Cinecoronariografia

Introduction: cardiovascular diseases are major causes of mortality in chronic renal failure patients before and after renal transplantation. Among them, coronary disease presents a special emphasis. Predictors of risk for coronary artery disease has been used for its diagnosis. Few studies have validated clinical predictors to selection patients for invasive procedures for the diagnosis of coronary artery disease (CAD) before renal transplantation. Objective: this study evaluated the frequency and discriminatory power of clinical predictors of coronary artery disease in chronic renal failure patients undergoing dialysis who were renal transplant candidates, assessed a previously developed scoring system (Gowdak et al.) for coronary artery disease, and we also checked the association between coronary artery disease and outcomes of the study group. Methods: coronary angiographies conducted between March 2008 and April 2013 from candidates for renal transplantation from two transplant centers in São Paulo state were analyzed. Cross-sectional study was conducted to verify the predictive power of clinical parameters for the presence of significant coronary artery disease (≥70% stenosis in one or more epicardial artery or ≥ 50% in the left main coronary artery). In addition, the discriminating power of a previously established clinical risk score was assessed (which takes account of diabetes mellitus (DM), age and clinical manifestations of cardiovascular disease). It was also conducted observational longitudinal study and drew up survival curves according to the angiographic diagnosis to verify the association between the presence of coronary heart disease and outcomes. Results: we screened 128 patients, of which 23 were excluded. The prevalence of coronary atheromatosis of any grade was 60/105 (57%) and significant coronary atheromatosis was 30/105 (29%) in the total sample. The remaining 105 patients underwent coronary angiography, two were excluded because of recording outcomes failures, so 103 were included in the longitudinal analysis. Of the 105 patients, in six, the analysis of clinical data showed incomplete. These were excluded from the cross-sectional study that was conducted with 99 patients. Univariate logistic regression analysis identified the presence of DM, angina and / or previous infarction, clinical peripheral artery disease and hyperlipidemia as predictors of CAD. Multiple logistic regression identified only diabetes and angina and / or previous infarction as independent predictors. The previously developed scoring system showed a close association with the diagnosis of CAD, which validates its use in the patients studied. Mortality was lower than expected among patients on dialysis. The presence of CAD was associated with cardiovascular events and was not a predictor of mortality. Conclusion: the CAD was frequent in renal failure patients on dialysis candidates to kidney transplantation, can be identified by clinical data and identification by angiography can predict cardiovascular events.