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Revista Colombiana de Cardiología

versão impressa ISSN 0120-5633


FACENDA, Abel et al. Effects of extracorporeal circulation on glomerular filtration in pediatric cardiovascular surgery. Rev. Colom. Cardiol. [online]. 2011, vol.18, n.3, pp.169-176. ISSN 0120-5633.

Objective: know how extracorporeal circulation affects renal function taking as marker the impairment of the glomerular filtration rate. Material and Method: we performed a prospective analytical observational study in 63 pediatric patients that underwent elective cardiac surgery with extracorporeal circulation in the Pediatric Cardiac Center ¨William Soler¨ between october 2009 and april 2010. Variations of glomerular filtration rate during extracorporeal circulation were calculated by the Schwartz method and blood samples were taken to determine plasma creatinine values before and after extracorporeal circulation. Data were processed with the SPSS statistical package version 11.5.1. Results were expressed as mean, standard deviation and percentage. We considered that difference or significant association existed if the probability associated to the applied test was less than 0,05 (p<0,05). Analysis was performed by non-parametric testing given n < 30 and through related samples. Results: the decline in glomerular filtration rate post extracorporeal circulation was not associated to the type of cardiopathy (p<0,056) but it was associated to its previous state (p<0,000). The duration of extracorporeal circulation contributes significantly to the deterioration of the glomerular filtration rate (p<0,021); this did not happen with the aortic clamping time (p<0,06). The volume of urine obtained during the duration of extracorporeal circulation (p<0,051) and during the trans-operative period (p<0,056) was not an index of appropriate renal function measured by glomerular filtration rate. Conclusions: extracorporeal circulation affects significantly the renal function taking as a marker the impairment of glomerular filtration rate.

Palavras-chave : glomerular filtration rate; extracorporeal circulation.

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