title: Intrarenal resistance index for the assessment of acute renal injury in a rat liver transplantation model.
abstract: BACKGROUND
  Acute kidney injury (AKI) is a common complication after liver transplantation (LT) and associated with a high mortality. The renal resistive index (RI) is used to assess early renal function impairment in critical care patients. However, limited data are available concerning changes of renal RI and the development of AKI early after reperfusion. We approached to investigate the changes of renal RI and AKI after reperfusion in a rat liver transplantation model.
  
  
  METHODS
  Rats were randomly divided into sham group or LT group. Ten rats in each group were used for the hemodynamic study and twenty for Doppler measurements during the procedure. Ten rats were sacrificed 30 min or 2 h after the reperfusion. We harvested kidneys, serum and urine for further analysis of the renal function.
  
  
  RESULTS
  The intrarenal RI increased significantly in the anhepatic stage and decreased significantly after the reperfusion in the LT group compared with sham group (P < 0.05). AKI was seen after the reperfusion in the LT group. No correlation was noted between the RI and renal function parameters 30 min after reperfusion.
  
  
  CONCLUSIONS
  The intrarenal RI increased significantly during the anhepatic stage, and decreased significantly early after the reperfusion. Intrarenal RI was unable to assess renal function in a rat liver transplantation model.
authors: Department of Anesthesiology, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, PR China.
authors: Hai-Ying
authors: HY
authors: Kong
authors: Fen
authors: F
authors: Chen
authors: Yong
authors: Y
authors: He
authors: Lin-Jiao
authors: LJ
authors: Wu
authors: Li-Qing
authors: LQ
authors: Wang
authors: Sheng-Mei
authors: SM
authors: Zhu
authors: Shu-Sen
authors: SS
authors: Zheng
mesh_terms: D058186:Acute Kidney Injury / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000503:physiopathology; D000818:Animals; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D007677:Kidney Function Tests / Q000379:methods*; D016031:Liver Transplantation / Q000009:adverse effects*; D008297:Male; D051381:Rats; D017207:Rats, Sprague-Dawley; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D018608:Ultrasonography, Doppler / Q000379:methods*