中华外科杂志102110 关键词： 监测,手术中;血管容量;脉搏灌注指数变异 [gap=1882]Keywords ：Monitoring,intraoperative; Vascular capacitance; Pleth variabilityindex
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结论HD成功的关键在于血管通路的建立、血容量的稳定及并发症的防治。
Conclusions: The key factory of HD success is to construct vascular passage, establish blood volume and prevent complication.
妊娠期间，血容量和心输出量增加30 - 50%，而全身血管阻力下降。
During pregnancy, plasma volume and cardiac output increase by 30-50%, while systemic vascular resistance is reduced.
其作用源于大的容量血管和小的阻力血管的同时扩张。
This effect is due to dilation of both the large conductance and small resistance renal blood vessels.
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