Abstract
Background
Acute liver failure (ALF) caused by Wilson disease (WD) is always fatal. Therefore, a quick diagnosis of WD is needed to start immediate management. This study aims to determine the ratio of aspartate aminotransferase to alanine aminotransferase (AST/ALT) and the ratio of alkaline phosphatase to total bilirubin (ALP/TB) in diagnosing Wilsonian acute liver failure (WALF) in children.
Methods
Sixty children with acute liver failure were included in this study, of whom 40 had WALF and 20 had a non-Wilsonian acute liver failure (non-WALF). The serum ALT, AST, alkaline phosphatase, and total bilirubin of each blood sample were measured. We evaluated the sensitivity and specificity of AST/ALT ratio and ALP/TB ratio in WALF diagnosis.
Results
Consanguinity and Kayser-Fleischer (K-F) rings were found in 32.5% and 72.5% of WALF cases, respectively. The mean hemoglobin, median ALT, median alkaline phosphatase, and mean ceruloplasmin of children with WALF were lower than those in the non-WALF group. In WALF cases, the median AST/ALT ratio was higher than in non-WALF cases. The sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and diagnostic accuracy of the ratio of AST to ALT were 70%, 95%, 96.5%, 61.3% and 78.3%, respectively. However, when the cutoff value is ≥ 1.85, the maximum sensitivity produced by the AST/ALT ratio is 77.5% and the specificity is 95%. The sensitivity, specificity, PPV, NPV, and diagnostic accuracy of the ratio of ALP/TB < 4 were 32.5%, 100%, 100%, 42.5%, and 55%, respectively. The overall mortality rate was 50%, while the WALF mortality was 60%.
Conclusion
A positive AST/ALT and ALP/TB ratio strongly suggest WALF, but a negative result does not exclude WALF. We cannot use these ratios as a diagnostic tool for children with WALF. In WALF cases, the mortality rate is remarkably high, and the high score of the new Wilson index predicts the mortality rate without liver transplantation.
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Afsana Yasmin and Md. Rukunuzzaman designed the research. Afsana Yasmin and Zannatul Ferdous Sonia collected the data. Afsana Yasmin, Rubaiyat Alam, and Kamal Hossen analyzed the data. Afsana Yasmin and Md. Rukunuzzaman wrote the manuscript. A S M Bazlul Karim closely supervised the whole study from the period of protocol establishment to end of study by repeated correction and gave final approval.
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AY, MR, ASMBK, RA, KH, and ZFS declare that they have no conflict of interest.
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Yasmin, A., Rukunuzzaman, M., Karim, A. et al. Ratio of aspartate aminotransferase to alanine aminotransferase and alkaline phosphatase to total bilirubin in Wilsonian acute liver failure in children. Indian J Gastroenterol 41, 224–230 (2022). https://doi.org/10.1007/s12664-022-01244-5
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DOI: https://doi.org/10.1007/s12664-022-01244-5