Body composition measurements
overhydration
OVERHYDRATION
Fluid status of the patients was assessed by a whole-body bioimpedance spectroscopy (Body Composition Monitor (BCM), Fresenius Medical Care, Bad Homburg, Germany) at baseline, after 1 and 3 months. From the impedance data and additional clinical parameters, extracellular water, intracellular water and total water was calculated by the equations proposed by Moissl [Fluid status is represented by overhydration (OH in litre), based on a three-compartment model developed by Chamney [