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Application of combi-elastography for follow-up after pediatric liver transplantation: A prospective study
Yang Gao1, Fenglin Xu1, Lirong Zhu1
1Department of Ultrasound Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Structural Birth Defect and Reconstruction. Chongqing 400010, China.
Insights
Combi-elastography effectively monitors liver stiffness changes in children post-liver transplant. This technique aids in predicting complications and guiding follow-up care for pediatric liver transplant recipients.
Area of Science:
- Hepatology
- Pediatric Surgery
- Medical Imaging
Background:
- Liver transplantation in children is a complex procedure.
- Monitoring graft function and detecting complications early is crucial.
- Non-invasive methods for assessing liver stiffness are needed.
Purpose of the Study:
- To evaluate the utility of combi-elastography in pediatric liver transplant recipients.
- To assess changes in liver stiffness post-transplantation.
- To determine if combi-elastography can predict post-transplant complications.
Main Methods:
- 35 pediatric liver transplant recipients were prospectively studied.
- Combi-elastography was performed on donor livers and recipients at multiple time points post-surgery.
- Liver function tests were recorded concurrently.
- Patients were categorized based on donor liver steatosis and post-operative complications.
Main Results:
- Combi-elastography indices were elevated early post-transplant, stabilizing by 3 months.
- Higher initial combi-elastography values were observed in fatty donor livers and in recipients with complications.
- Receiver operating characteristic analysis showed combi-elastography values could predict complications with good sensitivity and specificity.
Conclusions:
- Combi-elastography is a valuable tool for assessing liver stiffness changes in the early post-liver transplant period.
- This imaging modality can aid in the follow-up of pediatric liver transplant patients.
- Combi-elastography shows promise in predicting complications after pediatric liver transplantation.
Objective:
To investigate the use of combi-elastography in children after liver transplantation.
Methods:
Thirty-five children who underwent liver transplantation at our hospital were prospectively selected. Donor livers were divided into fatty liver and nonfatty liver groups according to the degree of fatty liver. Recipients were categorized into groups with (10 patients) and without complications (25 patients) according to the presence or absence of complications within 6 months after surgery. Combi-elastography was performed on each donor liver, and each patient underwent combi-elastography at the time of surgery and at 1 day, 7 days, 1 month, 3 months, and 6 months after surgery; the results of liver function tests were recorded at the same time points.
Results:
Despite the rapid recovery of liver function in the group without complications, the combi-elastography indices were still high in the early stage and gradually stabilized after 3 months but were still higher than those of the donor liver at 6 months. In the fatty liver group, the postoperative 1-day combi-elastography values were significantly higher than those in the nonfatty liver group, and in the group with complications, the postoperative 1-day combi-elastography values were significantly higher than those in the group without complications. The receiver operating characteristic (ROC) curve analysis revealed that the areas under the curves (AUCs) of the combi-elastography values for predicting complications in children at 6 months after liver transplantation were 8.41 kPa for Young's modulus (E) (with a sensitivity of 90 % (9/10 and a specificity of 76 % (19/25)) 1.26 for the F-index (FI) value (sensitivity 80 %(8/10), specificity 80 % (20/25)), and 1.05 kPa for the A-index (AI) value (sensitivity 80 %(8/10), specificity 72 % (18/25)).
Conclusions:
Combi-elastography is useful for assessing changes in liver stiffness in the early period after liver transplantation and should therefore be considered for the follow-up of children who undergo liver transplantation.
