Post-hepatoportoenterostomy Acoustic Radiation Force Impulse Elastography to Predict Two-year Outcome of Biliary Atresia
JOURNAL OF CLINICAL AND TRANSLATIONAL HEPATOLOGY(2023)
Abstract
Background and Aims: Early identification of prognostic factors to predict transplant/death outcome of biliary atresia (BA) is challenging. We aimed to investigate the longitudinal changes and predictive value of dynamic changes in acoustic radiation force impulse elastography with shear wave speed (SWS) quantification and other parameters within three months after hepatoportoenterostomy (HPE) for 2-year BA outcomes. Methods: Seventy-four patients who underwent HPE between July 2016 and June 2019 were prospectively enrolled. Outcomes were classified into native liver survival and transplant/death groups. Acoustic radiation force impulse elastography was performed sequentially at 3 months intervals post-HPE. Cox regression analysis was used to determine the superior SWS values and other predictors of liver transplantation or death. Results: Among patients 2 years of age, 36 survived with a native liver, nine died, and 29 underwent liver transplantation. The trend in SWS levels in the transplant/death group was significantly different from that in the native liver survival group..SWS at 1-3 months post-HPE and total bilirubin at 1 month post-HPE were selected as superior predictors of liver transplantation or death using multivariate Cox regression models: hazard ratio (HR)=1.927; 95% confidence interval (CI): 1.475-2.661; p<0.001 and HR=1.010; 95% CI: 1.003-1.017; p=0.007, respectively. The combination of the selected Delta SWS and total bilirubin had good predictive power, with an area under the receiver operating characteristics curve of 0.89, specificity 94.44% and sensitivity 73.68%. Conclusions: Our results suggest that early postoperative bilirubin levels and SWS changes were reliable predictors of 2-year BA outcomes.
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Key words
Biliary atresia,Hepatoportoenterostomy,Acoustic radiation force impulse elastography,Native liver survival,Liver transplantation
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