Whole-body and segmental bioelectrical parameters in XXXX : effect of gender and disease stages.

@entity1 @entity66 @entity4 @entity843 @entity409
The aim of this study was to examine and compare whole-body and segmental impedance measurements in control subjects and @entity1 with progression of @entity409 and to investigate whole-body and segmental bioelectrical changes occurring during dehydration therapy or paracentesis. Males have lower resistance (R) and reactance (Xc) values than females in measurements both of the whole body and of the arm, leg, and trunk. This is not true in @entity1 . In the three groups of @entity1 , whole-body R and Xc were lower in each @entity66 stage, suggesting that stage has a significant main effect on impedance measurements. The lower extremities were the segment most influenced by the progression of @entity409 . The sum of the arm and leg R was only slightly lower than the value of whole-body resistance. The trunk has a meager influence on this parameter, as is clearly shown by the absence of variations before and immediately after paracentesis. In @entity4 @entity1 without @entity843 treated with diuretics, our data also showed a significant correlation (r = .81; SEE = 1.2) between changes in body weight (BW) and in the bioelectrical evaluation of total body water (TBW). The association of a prevalent increment of Xc (approximately 40%) with a reduction of extracellular water is the most significant bioelectrical event during dehydration therapy. All these findings show that impedance measurements have a low sensitivity in detecting the volume of @entity843 in cirrhotic @entity1 , whereas Xc has a clinical use in monitoring changes in extracellular water (EW).
