<prompt> Which is not true about indication of exchange transfusion ? Not a criteria for exchange transfusionCord bilirubin is 5 mg or moreCord Hb is 10 mg or lessRate of bilirubin increase is 0.5 mgTotal bilirubin 10 mgdl  <response>: Double volume exchange tranfusion DVET should be performed if the total serum bilirubinTSB levels reach to age specific cut off for exchange transfusion or th infant shows signs of bilirubin encephalopathy irrespective of TSB levels .For 28 wk gestation, TSB cut off is 11-14 mgdl. For 28 to 29 wks, 30 to 31 wks and 32 to 33gestation, cut off is 12-14, 13 - 16 and 15-18 mgdl respectively . For 34 wks of gestation, cut off is 17-19 mg dl. Reference : page 172 Ghai Essential Pediatrics 9 th edition 