This protocol is only intended to be used for undiagnosed hyperammonaemia.
The differential diagnosis of hyperammonaemia in the newborn period is wide. (For details see the separate protocol on the BIMDG website.) This protocol outlines the management. of the condition, addressing the scenarios arising if the mother has previously given birth to a sibling who became ill in the neonatal period AND if she has previously given birth to a sibling who became ill after the neonatal period.