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Correlation between optimal tacrolimus doses and the graft weight in living donor liver transplantation
Author(s) -
Sugawara Y,
Makuuchi M,
Kaneko J,
Ohkubo T,
Imamura H,
Kawarasaki H
Publication year - 2002
Publication title -
clinical transplantation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.918
H-Index - 76
eISSN - 1399-0012
pISSN - 0902-0063
DOI - 10.1034/j.1399-0012.2002.1o106.x
Subject(s) - medicine , liver transplantation , tacrolimus , correlation , linear regression , transplantation , nuclear medicine , stepwise regression , body weight , confidence interval , regression analysis , urology , gastroenterology , statistics , mathematics , geometry
The optimal doses of tacrolimus (FK) needed to reach and maintain a target blood level vary among cases of living donor liver transplantation (LDLT). One hundred and twenty four LDLTs in 122 patients were included in this study. Tacrolimus was administered by continuous intravenous infusion at a rate of 2.5 μg/kg/h just after the operation. The time needed to reach the target blood level and the dose needed to maintain this level for 1 week (17–18 ng/mL) were defined as the initial duration (ID) and secondary dose (SD), respectively. In the first 100 LDLTs, the correlations between ID or SD and some clinical factors were examined and equations for predicting ID or SD were derived. In the latest 24 LDLTs, FK was administered using these equations and the actual and calculated ID and SD values were compared. A multiple regression analysis revealed that only the graft weight/recipient standard liver volume (GW/SLV) ratio (%) correlated with ID or SD. Stepwise regression analysis led to the equations ID (h)=0.4 × GW/SLV ratio + 0.2; SD (μg/kg/h)=0.02 × GW/SLV ratio – 0.4. Simple regression analysis revealed a significant correlation between the actual and calculated ID and SD values (p < 0.0001). Initial duration and SD can be estimated from equations using the GW/SLV ratio.