One-Year Follow-up of the Changes in Renal Function After Liver Transplantation in Patients Without Chronic Kidney Disease.
BACKGROUND
Impaired renal function is a strong risk factor for morbidity and mortality after liver transplantation (LT). There is clearly a progressive deterioration in renal function after LT. The greatest loss of renal function occurs within the 1st year after LT. Several factors, including calcineurin inhibitors, are associated with decreased renal function. The aims of the present study were to identify changes in renal function before and after LT and to determine the risk factors related to decreased renal function after LT.


METHODS
We reviewed medical records of 106 LT recipients without moderate to severe chronic kidney disease (estimated glomerular filtration rate [eGFR] ≥60 mL/min/1.73 m(2)). We investigated eGFR changes from before to 1 year after LT with the use of propensity score matching. Statistical significance of differences between clinical parameters and 1-year eGFR changes was assessed with the use of univariate and multivariate analyses.


RESULTS
Mean age was 49.5 ± 10.9 years, and 66% of the patients were male. Mean differences in 1-year eGFR and serum creatinine were -32.0 ± 29.2 mL/min/1.73 m(2) and 0.3 ± 0.3 mg/dL, respectively. Variables significantly associated with renal dysfunction 1 year after LT were old age, low pre-LT eGFR, low post-LT hemoglobin, and perioperative acute kidney injury. Multivariate analysis showed that pre-LT renal function was an independent risk factor for decreased renal function after LT. However, there was no significant correlation between 1-year eGFR change and serum tacrolimus level.


CONCLUSIONS
Renal function significantly decreased the 1st year after LT, and baseline renal function was an independent risk factor for worsening renal function in LT recipients.
Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea. Electronic address: gwkang4540@hanmail.net.
G W
GW
Kang
Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea.
I H
IH
Lee
Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea.
K S
KS
Ahn
Department of General Surgery, Catholic University of Daegu School of Medicine, Daegu, Korea.
J D
JD
Kim
Department of Medical Statistics, Catholic University of Daegu School of Medicine, Daegu, Korea.
S G
SG
Kwak
Department of General Surgery, Catholic University of Daegu School of Medicine, Daegu, Korea.
D L
DL
Choi
D000328:Adult; D000367:Age Factors; D065095:Calcineurin Inhibitors / Q000627:therapeutic use*; D003920:Diabetes Mellitus / Q000453:epidemiology*; D005260:Female; D005500:Follow-Up Studies; D005919:Glomerular Filtration Rate; D006084:Graft Rejection / Q000517:prevention & control*; D006526:Hepatitis C / Q000453:epidemiology*; D006801:Humans; D006973:Hypertension / Q000453:epidemiology*; D007677:Kidney Function Tests; D008107:Liver Diseases / Q000601:surgery*; D016031:Liver Transplantation; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D011183:Postoperative Complications / Q000453:epidemiology*; D011507:Proteinuria / Q000453:epidemiology*; D051436:Renal Insufficiency, Chronic / Q000453:epidemiology*; D012189:Retrospective Studies; D012307:Risk Factors; D012737:Sex Factors
D065095:Calcineurin Inhibitors