Interpret a referred newborn hearing screen — OSCE

A 5-week-old infant is brought to the paediatric audiology clinic by anxious parents after the newborn hearing screen referred on the right ear. The diagnostic testing shows robustly present otoacoustic emissions at all frequencies on both ears, a normal type A tympanogram on the left and a normal type A on the right, and an auditory brainstem response on the right that shows no reproducible wave V even at high stimulus levels with a preserved cochlear microphonic. You are the paediatric registrar asked to interpret the results and to counsel the family.