Sequential body composition analysis by bioimpedance early post-kidney transplantation

Abstract

Summary Background: While chronic renal failure patients present disturbed body water composition, few studies have been done on its behavior following kidney grafting (Tx). We report the changes associated with a successful Tx on body composition evaluated by bioelectrical impedance analysis (BIA). Methods: Twelve Tx (seven males, five females) were studied. The BIA was assessed before Tx, at month 1 and at month 3 post‐Tx. Total body water (TBW), extracellular water (ECW), intracellular water (ICW), Na:K exchange rate (Nae:Ke) and phase angle (PA) were studied. An healthy group and a HD group were evaluated three times in a year interval. Results: Comparing before Tx with month 1 post‐Tx, TBW, ECW and Nae:Ke increased, while ICW and PA decreased significantly. Comparing month 1 with month 3 post‐Tx, ECW decreased, while ICW and PA increased. On comparing month 1 post‐Tx with the healthy group, Nae:Ke was greater and PA was lower at month 1. Conclusions: The BIA showed that the different body water compartments of Tx recipients quickly match the constitution of normal individuals, overcoming drug therapy side effects.

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