Single- and multifrequency models for bioelectrical impedance analysis of body water compartments
Single- and multifrequency models for bioelectrical impedance analysis of body water compartments
复制标题
DOI：
10.1152/jappl.1999.87.3.1087
复制
发表时间：
1999-09-01
影响因子：
3.3
通讯作者：
Bolt, MJG
中科院分区：
文献类型：
--
作者：
Gudivaka, R;Schoeller, DA;Bolt, MJG
1994 年美国国立卫生研究院关于生物电阻抗分析 (BIA) 的技术会议不支持在改变细胞外 (ECW) 和细胞内水 (ICW) 区室之间正常关系的条件下使用 BIA。为了将 BLA 的应用扩展到这些人群，我们研究了 7 个先前发表的 BIA 模型的准确性和精密度，这些模型用于测量输注乳酸林格液或服用利尿剂的个体体内水分分配的变化。将结果与使用氧化氘和溴化物稀释并结合体重的短期变化进行比较。 BLA 使用近端四极电极在 5 至 500 kHz（包括 50 kHz）范围内进行测量。单频 50 kHz 模型无法准确预测体内水分总量的变化，但 50 kHz 并行模型确实准确测量了 ICW 的变化。唯一能够准确预测 ECW、ICW 和体内水分总量变化的模型是 0/无穷大 kHz 并行 (Cole-Cole) 多频模型。使用 Hanai 校正进行混合不太准确。我们得出的结论是，在身体水分区划从正常状态改变的条件下，多频科尔-科尔模型更优越。
The 1994 National Institutes of Health Technology Conference on bioelectrical impedance analysis (BIA) did not support the use of BIA under conditions that alter the normal relationship between the extracellular (ECW) and intracellular water (ICW) compartments. To extend applications of BLA to these populations, we investigated the accuracy and precision of seven previously published BIA models for the measurement of change in body water compartmentalization among individuals infused with lactated Ringer solution or administered a diuretic agent. Results were compared with dilution by using deuterium oxide and bromide combined with short-term changes of body weight. BLA, with use of proximal, tetrapolar electrodes, was measured from 5 to 500 kHz, including 50 kHz. Single-frequency, 50-kHz models did not accurately predict change in total body water, but the 50-kHz parallel model did accurately measure changes in ICW. The only model that accurately predicted change in ECW, ICW, and total body water was the 0/infinity-kHz parallel (Cole-Cole) multifrequency model. Use of the Hanai correction for mixing was less accurate. We conclude that the multifrequency Cole-Cole model is superior under conditions in which body water compartmentalization is altered from the normal state.