Value of serum gamma-glutamyl transpeptidase combined with direct bilirubin in the diagnosis of biliary atresia in infants
FU Hai-Yan, ZHAO Rui-Qin, BAI Ge-Lan, YIN Chun-Lan, YIN Run-Kai, LI Hai-Hua, SHI Wei-Na, LIU Ya-Li, CHENG Li-Juan, JIA Xiao-Yun, LI Gui-Gui, ZHAO Shi-Guang
Department of Infectious and Digestive Diseases, Hebei Children's Hospital, Shijiazhuang 050031, China
Abstract Objective To study the value of serum gamma-glutamyl transpeptidase (GGT) combined with direct bilirubin (DB) in the diagnosis of biliary atresia. Methods A total of 667 infants with cholestasis who were hospitalized and treated from July 2010 to December 2018 were enrolled as subjects. According to the results of intraoperative cholangiography and follow-up, they were divided into biliary atresia group with 234 infants and cholestasis group with 433 infants. The two groups were compared in terms of age of onset, sex, and serum levels of total bilirubin (TB), DB, alanine aminotransferase (ALT), aspartate aminotransferase (AST), total bile acid (TBA), and GGT. A receiver operating characteristic (ROC) curve analysis was performed for indices with statistical significance, and the area under the ROC curve (AUC) and the optimal cut-off value for diagnosis were calculated. Results The biliary atresia group had a significantly younger age of onset than the cholestasis group (P < 0.001). There were no significant differences in sex, ALT, and AST between the two groups (P > 0.05), while the biliary atresia group had significantly higher serum levels of TB, DB, TBA, and GGT than the cholestasis group (P < 0.05). GGT combined with DB had the highest AUC of 0.892 (95% confidence interval:0.868-0.916) in the diagnosis of biliary atresia. At the optimal cut-off values of 324.0 U/L for GGT and 115.1 μmmol/L for DB, GGT combined with DB had a sensitivity of 79.8% and a specificity of 83.2% in the diagnosis of biliary atresia. Conclusions GGT combined with DB has high sensitivity and specificity in the diagnosis of biliary atresia and can be used as an effective indicator for diagnosis of biliary atresia in infants.
FU Hai-Yan,ZHAO Rui-Qin,BAI Ge-Lan et al. Value of serum gamma-glutamyl transpeptidase combined with direct bilirubin in the diagnosis of biliary atresia in infants[J]. CJCP, 2019, 21(12): 1198-1202.
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