title: Sequential body composition analysis by bioimpedance early post-kidney transplantation.
abstract: 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.
authors.affiliation: Nephrology Department, S João Hospital, Porto, Portugal. jcasimiro@mail.telepac.pt
authors.forename: Andreia
authors.initials: A
authors.lastname: Coroas
authors.forename: José
authors.initials: J
authors.lastname: Oliveira
authors.forename: Susana
authors.initials: S
authors.lastname: Sampaio
authors.forename: Cátia
authors.initials: C
authors.lastname: Borges
authors.forename: Isabel
authors.initials: I
authors.lastname: Tavares
authors.forename: Manuel
authors.initials: M
authors.lastname: Pestana
authors.forename: Maria
authors.initials: M
authors.lastname: Almeida
mesh_terms: D000328:Adult; D001823:Body Composition; D001834:Body Water / Q000378:metabolism; D016022:Case-Control Studies; D017097:Electric Impedance; D005260:Female; D006801:Humans; D017136:Ion Transport; D016030:Kidney Transplantation / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D011188:Potassium / Q000378:metabolism; D006435:Renal Dialysis; D012964:Sodium / Q000378:metabolism; D013997:Time Factors; D014882:Water-Electrolyte Balance
chemical_list: D012964:Sodium; D011188:Potassium