变化的人体电流传导产生的电阻与体液量有关,生物电阻抗分析(BIA)即根据这一原理测定正常人细胞外液量(ECW)和总体液量(TBW)。通常的测定疗法是将皮肤电极置于手和脚。文内研究了卧床休息、输液、采血时的电阻变化,提出将电极置于肢体近端部位能更准确地反映体液量的变化。 Changes in body current conduction resistance and body fluid volume related to bioelectrical impedance analysis (BIA) that is based on the principle of determination of normal human extracellular fluid (ECW) and total fluid (TBW). The usual therapy is to place the skin electrodes on hands and feet. The paper studied the resistance changes during bed rest, fluid infusion and blood sampling. It is suggested that the placement of the electrodes in the proximal part of the limb can reflect the changes of the fluid volume more accurately.