The Hepatic Artery Resistance Index (HARI) can be predictive of outcome in children with biliary atresia. As hepatic fibrosis progresses there is increased intrahepatic vascular resistance.
Patient selection: child with biliary atresia
Method: Doppler ultrasonography with monitoring of the hepatic artery at the porta hepatis
With abnormal hepatic artery flow, there is reversal of flow during diastole, resulting in negative end-diastolic velocities. Subtraction of a negative score becomes additive.
Interpretation:
• A HARI < 1.0 was associated with a better prognosis than a HARI >= 1.0
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