Exchange transfusion(ET) Indications Bilirubin rises to the dangerous level Continues to rise above the recommended level spite of intensive phototherapy Transfusion via: cord vessels, peripheral vessels Blood volume: twice infant's blood volume It should be consider seriously whether to use ETExchange transfusion(ET) Indications: Bilirubin rises to the dangerous level; Continues to rise above the recommended level in spite of intensive phototherapy. Transfusion via: cord vessels, peripheral vessels Blood volume: twice infant’s blood volume It should be consider seriously whether to use ET