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  • Title: The effect of modified ultrafiltration on the amount of circulating endotoxins in children undergoing cardiopulmonary bypass.
    Author: Yndgaard S, Andersen LW, Andersen C, Petterson G, Baek L.
    Journal: J Cardiothorac Vasc Anesth; 2000 Aug; 14(4):399-401. PubMed ID: 10972604.
    Abstract:
    OBJECTIVE: To determine whether the use of modified ultrafiltration during pediatric cardiopulmonary bypass (CPB) diminishes the load of circulating endotoxins. DESIGN: Single-arm prospective observational study. SETTING: A university hospital operating room and intensive care unit. PARTICIPANTS: Twenty children undergoing CPB for correction of various congenital heart diseases. INTERVENTIONS: The amount of endotoxins in plasma was measured during CPB and before and after modified ultrafiltration. The ultrafiltrate was assayed for the presence of endotoxins. Postoperatively, the children were followed with relevant infectious parameters and cultures. MEASUREMENTS AND MAIN RESULTS: The amount of endotoxins increased significantly during the CPB procedure (from a median of 1.3 ng [range, 0 to 13.7 ng] to 24.2 ng [range, 2.1 to 75.9 ng]). After termination of CPB, modified ultrafiltration was shown to lower the amount of circulating endotoxins in blood (from a median of 24.2 ng [range, 2.1 to 75.4 ng] to 9.0 [range, 0.1 to 40.6 ng]). The major bulk of this reduction in endotoxin load was retrieved in the ultrafiltrate (median of 11.9 ng [range, 0 to 12.1 ng]). CONCLUSION: This study strongly suggests that modified ultrafiltration decreases the amount of circulating endotoxins in children undergoing cardiac surgery.
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