搏动灌注和非搏动灌注对肾功能的影响

目的研究体外循环（CPB）时应用搏动灌注（PP）和非搏动灌注（NPP）对患者术后肾功能的影响。方法拟行CPB的患者60例,采用随机、双盲的方法分为搏动灌注组（PP组）和非搏动灌注组（NPP组）,每组30例。PP组在人工心肺机泵后串联双搏动式心肺辅助装置,在主动脉阻断期间采用搏动灌注。NPP组全程均采用非搏动灌注。两组灌流量控制在2.3～2.8 L/（min .m2）。分别于术前（T1）、CPB后4 h（T2）、12 h（T3）、24 h（T4）、48 h（T5）抽取外周静脉血及留取新鲜尿液,测定血清肌酐（Scr）、血清尿素氮（BUN）、血清β2-微球蛋白（β2-MG）和尿β2-MG浓度。结果两组患者一般资料差异无统计学意义。与T1比较,两组血清Scr、BUN浓度在T4～T5明显升高（P〈0.01）;血清β2-MG、尿β2-MG浓度在T2～T5明显升高（P〈0.05）。与NPP组比较,PP组血清Scr、BUN浓度在T4～T5明显降低（P〈0.05）;血清β2-MG、尿β2-MG浓度在T2～T5明显降低（P〈0.05）。结论 PP能有效地减轻CPB后肾脏损伤,降低肾功能损害的程度。

The impact of pulsatile and non-pulsatile perfusion on renal function in patients underwent cardiopulmonary bypass

OBJECTIVE To observe the influence of pulsatile perfusion(PP) and non-pulsatile perfusion(NPP) on renal function in patients underwent cardiopulmonary bypass(CPB).METHODS Sixty low risk patients underwent CPB were divided in a double-blind and randomized fashion into 2 groups(n=30 each): NPP group and PP group.In PP group,a twin pulse life support was used and the pulsatile flow was performed during the period of aortic cross-clamping.In NPP group,the non-pulsatile flow was used during CPB.In both groups,pu...