高容量血液滤过对脓毒性休克患儿血流动力学及血管内皮通透性的影响

Impacts of high-volume hemofiltration on hemodynamics and vascular endothelial permeability in children with septic shock

摘要:

目的 比较分析高容量血液滤过对脓毒性休克患儿血流动力学、血管活性因子及血管内皮通透性的影响。方法 2013 年1 月至2014 年9 月确诊为脓毒性休克的36 例患儿被随机分为对照组和观察组,每组18 例。对照组采用常规容量血液滤过进行治疗,观察组采用高容量血液滤过进行治疗。比较两组患儿治疗前后的血流动力学指标及血管活性因子[6-酮-前列腺素F1α(6-keto-PGF1α)、血栓素B2(TXB2)、可溶性E-选择素(sE-selectin)和血管内皮舒张因子(EDRF)]的变化情况,分析超滤液对血管内皮细胞通透性的影响。结果 与对照组相比,治疗后观察组平均动脉压和血氧饱和度显著升高,心率显著下降(P<0.05)。治疗后观察组患儿TXB2 和sE-selectin 水平显著低于对照组,而6-keto-PGF1α 和EDRF 水平显著高于对照组(P<0.05)。与对照组相比,治疗后观察组患儿的超滤液显著降低了内皮细胞的跨细胞电阻(P<0.05)。结论 与常规容量血液滤过治疗相比,高容量血液滤过治疗能更有效改善脓毒性休克患儿的血流动力学及血管活性因子水平,降低血管内皮细胞的通透性。

Abstract:

Objective To investigate the effects of high-volume hemofiltration (HVHF) on hemodynamics, vasoactive factors, and vascular endothelial permeability in children with septic shock by a comparative analysis.Methods Thirty-six children who were diagnosed with septic shock between January 2013 and September 2014 were randomly divided into control and observation groups (n=18 each). Children in the control group were treated with the standard-volume hemofiltration (SVHF), while children in the observation group were treated with HVHF. The hemodynamic indices and levels of vasoactive factors including 6-keto-prostaglandin F1α (6-keto-PGF1α), thromboxane B2 (TXB2), soluble E-selectin (sE-selectin), and endothelium-derived relaxing factor (EDRF) were determined before and after treatment. In addition, the effects of ultrafiltrate on endothelial cell permeability were assessed.Results Compared with the control group, the observation group had significantly higher mean arterial pressure, significantly higher blood oxygen saturation, and a significantly lower heart rate after treatment (P<0.05). The levels of TXB2 and sEselectin were significantly lower in the observation group than in the control group (P<0.05), while the levels of 6-keto-PGF1α and EDRF were significantly higher in the observation group than in the control group (P<0.05). Compared with the control group, the ultrafiltrate significantly attenuated the transepithelial electrical resistance in the observation group (P<0.05).Conclusions Compared with SVHF, HVHF is a more effective approach for improving the hemodynamics and levels of vasoactive factors and reducing the vascular endothelial permeability in children with septic shock.