Article

[Assessment of degree of edema by means of bioelectrical impedance during pregnancy].

Department of Obstetrics and Gynecology, Hiratsuka City Hospital, Kanagawa.
Nippon Sanka Fujinka Gakkai zasshi 01/1996; 48(1):25-31.
Source: PubMed

ABSTRACT It is well known that the total body water in women with toxemia of pregnancy expands beyond the normally increased volume that characterizes pregnancy. Although abnormally increased water retention is usually diagnosed by both the edema of the legs and the weight gain, these methods are not quantitative. To quantify the degree of edema, we used bioelectrical impedance analysis (BIA). Because water and electrolytes are the dominant factors affecting electrical conduction in the body, the increase in total body water (the degree of edema) is assessed by BIA. BIA was conducted serially in a group of 38 normal pregnant women during pregnancy and 4 pregnant women with toxemia of pregnancy. The values for bioelectrical impedance in normal pregnant women decreased gradually during pregnancy, suggesting a physiological increase in total body water (p < 0.01). In contrast, the values for bioelectrical impedance dramatically decreased in the cases of 4 women with toxemia of pregnancy and accurately increased in the process of recovery from toxemia of pregnancy. These findings indicate that bioelectrical impedance analysis is a useful and practical method for assessing the increase in total body water.

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    [show abstract] [hide abstract]
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Keywords

38 normal pregnant women
 
4 pregnant women
 
4 women
 
abnormally
 
BIA
 
bioelectrical impedance
 
bioelectrical impedance analysis
 
characterizes pregnancy
 
dominant factors
 
electrolytes
 
increased volume
 
normal pregnant women
 
physiological increase
 
practical method
 
pregnancy expands
 
total body water
 
toxemia
 
water retention
 
weight gain
 
women