• Blood purification · Jan 2020

    Observational Study

    Mortality of Patients on Maintenance Hemodialysis Submitted to Coronary Artery Bypass Surgery.

    • Sirlei C da Silva, Fábio Gaiotto, Ludhmila A Hajjar, Fernanda M Consolim-Colombo, Luís Yu, Rosa M A Moysés, and Rosilene M Elias.
    • Instituto do Coração, Hospital das Clinicas HCFMUSP, Universidade de São Paulo, São Paulo, Brazil, sirlei.silva@hc.fm.usp.br.
    • Blood Purif. 2020 Jan 1; 49 (5): 597-603.

    BackgroundPatients with chronic kidney disease (CKD) are less likely to be submitted to coronary artery bypass grafting (CABG) then clinical medical treatment based on the potential high risk of mortality. However, whether patients on maintenance dialysis who underwent an elective CABG experience high hospital- and long-term mortality is still debatable.MethodsThis is a prospective observational study that evaluated patients who underwent elective CABG. Three groups were compared: reference (n = 167, estimated glomerular filtration rate [eGFR] ≥60 mL/min/1.73 m2), CKD3-4 (n = 84, eGFR 15-59 mL/min/1.73 m2), and maintenance hemodialysis (n = 31). Demographic, clinical, biochemical, fluid balance data, and Sequential Organ Failure Assessment (SOFA) scores were assessed daily for the same observer from day 1 (surgery) to hospital discharge.ResultsThe main outcomes were in-hospital and 1-year mortality. Patients aged 63 ± 10, 63 ± 8, and 65 ± 6 years old, in reference, CKD3-4, and dialysis groups, respectively (p = 0.605). Patients from the reference group had a lower prevalence of diabetes (p = 0.010) and hypertension (p = 0.021). SOFA scores were higher in CKD3-4 and dialysis groups (p = 0.001), though this difference disappeared without the renal component (p = 0.326). In-hospital mortality (n = 17) was similar across groups (p = 0.955). There was no difference in 1-year mortality among groups even after adjustments for age, diabetes, intraoperative blood loss, and time on ventilation.ConclusionsCABG short-term mortality seems not to be greater among selected patients on maintenance dialysis. A multidisciplinary team has been helping cardiologists and cardiac surgeons in the decision-making process regarding the best approach in coronary artery disease, and CABG should be considered a worthy therapeutic option.© 2020 S. Karger AG, Basel.

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