RÉSUMÉ
Objective: To observe the therapeutic effect of peritoneal dialysis on low cardiac output syndrome (LCOS) after surgery in children with congenital heart disease (CHD). Methods: A total of 61 CHD children complicated with LCOS after surgery were selected. Echocardiography was used to measure heart chamber diameter, left ventricular ejection fraction (LVEF) and pulmonary artery pressure etc. before and after peritoneal dialysis; and central venous pressure (CVP), urine volume, blood gas analysis indexes，plasma brain natriuretic peptide (BNP) concentration were measured to evaluate influence of peritoneal dialysis. Results: Compared with before treatment, there were significant increase in urine volume [(203.28±15.81) ml vs. (989.11± 54.72) ml], LVEF [(32.94±2.29)% vs. (51.93±2.79)%]；and significant reduction in pulmonary artery pressure [(46.72±3.84) mmHg vs. (34.82±2.92) mmHg], CVP [(17.27±1.47) cm H2O vs. (10.41±1.01) cm H2O] and plasma BNP level [(5928.71±158.27) ng/ml vs. (3851.83± 128.81) ng/ml], P<0.001 all. Conclusion: Peritoneal dialysis may effectively treat low cardiac output syndrome after surgery in children with congenital heart disease, related with its effect of ultrafiltration and relieve cardiac burden.