（一）血容量增加（Blood volume increase） 慢性心功能不全时，血容量增加是其主要代偿方式之一。由肾小球滤过率降低和肾小管重吸 收增加引发的钠水潴留所致。
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目的：研究血容量增加对心-肾反射活动的影响，和心-肾反射在整体功能调节中的作用。
Objective: To study the effect of volume expansion on cardiac-renal reflex activity and the role of cardiac-renal reflex in the regulation of intergrated function.
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.
结果显示，安静时各指标无明显差异，但在运动后血液粘稠度显著下降，而血容量较运动前增加。
It is shown that every quota has no obvious change when one is static, but after doing sports, the consistency of blood volume increases.
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