Prognostic Factors of Kasai Operation

Age < 90 days &	
True extrahepatic bile ducts &	
Postoperative bile flow > 200 ml per day &	
Postoperative bile acid excretion of 10-30 mol/ml &	
Absence of postoperative hepatofugal portal flow &	
Postoperative portal flow > 7 cm/sec &	
Postoperative maintenance of portal flow velocity &