title: Impact of preoperative serum sodium concentration in living donor liver transplantation.
abstract: OBJECTIVE
  The importance of hyponatremia in deceased donor liver transplantation (DDLT) has been recently discussed frequently. However, its impact on the outcomes in living donor liver transplantation (LDLT) has not yet been elucidated. The current study was designed to demonstrate the impact of pre-transplant sodium concentration on postoperative clinical outcomes.
  
  
  METHODS
  One hundred and thirty-four patients who underwent LDLT for end-stage liver diseases were examined to evaluate the significance of pre-transplant hyponatremia (Na < or = 130 mEq/L) on the short-term clinical outcomes and the efficacy of the Model for End-Stage Liver Disease and serum sodium (MELD-Na) score using the sodium concentration and original MELD score.
  
  
  RESULTS
  The preoperative sodium and MELD score for all patients were 133.9 mEq/L (range: 109-142) and 16.2 (range: 6-38), respectively. According to a multivariate analysis, not only the MELD score (P = 0.030) but also the sodium concentration (P = 0.005) were found to be significant predictive factors for short-term graft survival. Preoperative hyponatremia was a significant risk factor for the occurrence of sepsis (P < 0.001), renal dysfunction (P < 0.001) and encephalopathy (P = 0.026). The MELD-Na score was 19.6 (range: 6-51) and the area under the receiver-operator curve of that (c-statistics: 0.867) was higher than MELD score and sodium concentration (c-statistics: 0.820 and 0.842, respectively).
  
  
  CONCLUSIONS
  Preoperative hyponatremia was a significant risk for postoperative complications and short-term graft loss. The addition of sodium concentration to MELD score might therefore be an effective predictor for post-transplant short-term mortality in LDLT.
authors.affiliation: Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan. fukut@surg2.med.kyushu-u.ac.jp
authors.forename: Takasuke
authors.initials: T
authors.lastname: Fukuhara
authors.forename: Toru
authors.initials: T
authors.lastname: Ikegami
authors.forename: Kazutoyo
authors.initials: K
authors.lastname: Morita
authors.forename: Kenji
authors.initials: K
authors.lastname: Umeda
authors.forename: Shigeru
authors.initials: S
authors.lastname: Ueda
authors.forename: Shigeyuki
authors.initials: S
authors.lastname: Nagata
authors.forename: Keishi
authors.initials: K
authors.lastname: Sugimachi
authors.forename: Tomonobu
authors.initials: T
authors.lastname: Gion
authors.forename: Tomoharu
authors.initials: T
authors.lastname: Yoshizumi
authors.forename: Yuji
authors.initials: Y
authors.lastname: Soejima
authors.forename: Akinobu
authors.initials: A
authors.lastname: Taketomi
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Maehara
mesh_terms: D000328:Adult; D000368:Aged; D015415:Biomarkers / Q000097:blood; D005260:Female; D006084:Graft Rejection / Q000097:blood / Q000209:etiology; D006085:Graft Survival; D006501:Hepatic Encephalopathy / Q000097:blood / Q000209:etiology; D006801:Humans; D007010:Hyponatremia / Q000097:blood / Q000150:complications*; D007564:Japan; D053208:Kaplan-Meier Estimate; D007674:Kidney Diseases / Q000097:blood / Q000209:etiology; D008107:Liver Diseases / Q000097:blood / Q000150:complications / Q000601:surgery*; D016031:Liver Transplantation / Q000009:adverse effects; D019520:Living Donors; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D018805:Sepsis / Q000097:blood / Q000209:etiology; D012964:Sodium / Q000097:blood*; D013997:Time Factors; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D015415:Biomarkers; D012964:Sodium