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Revista chilena de pediatría

versión impresa ISSN 0370-4106

Resumen

OVALLE B, Pilar et al. Renal replacement therapy after cardiac surgery with extracorporeal circulation. Rev. chil. pediatr. [online]. 2012, vol.83, n.1, pp.24-32. ISSN 0370-4106.  http://dx.doi.org/10.4067/S0370-41062012000100003.

Objective: Acute kidney injury (AKI) is a frequent complication of cardiac surgery with cardiopulmonary bypass (CPB). The aim of this study was to determine the incidence of renal replacement therapy (RRT) requirement in children undergoing surgical repair for congenital cardiopathies and identify the risk factors for requiring RRT. Patients and Methods: A retrospective, descriptive study was performed. The records of patients under 18 years undergoing cardiac surgery with CPB (January 2001 to July 2008) who required RRT (n = 15) and from a random patients sample that did not require it (n = 57) were analysed. Results: Fifteen children out of 942 required acute RRT (1.6%). Initial RRT was peritoneal dialysis (PD) in all of them. The main indications were hypervolemia and/or oligoanuria. Ten patients experienced complications associated to therapy and 14 patients had a history of serious intraoperative events. In multivariated analysis, hypotension (OR 36.0, CI 95%: 5.5-235.6) and serious low cardiac output (LCO) (OR 14.1, CI 95%: 1.47-135.32) were significant risk factors for RRT requirement. In turn, the presence of intraoperative events was significantly associated with the occurrence of hypotension (OR 28.9, CI 95%: 3.6-233.9) and LCO (OR 5.3, CI 95%: 1.126.6) during the post-surgical evolution. Conclusion: In this experience, severe hypotension and low cardiac output were significant risk factors for RRT requirement. The incidence of RRT was 1.6%. Renal function should be closely evaluated in those patients with surgical events. RRT should be early considered in those patients with risk factors for renal failure.

Palabras clave : Acute kidney failure; cardiac surgical procedures; cardiopulmonary bypass; congenital heart defects; peritoneal dialysis; renal replacement therapy.

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