In a small child diagnosed with H.influenzae meningitis, what investigation must be done before discharging him from the hospital ?

Auditory Brainstem evoked response (ABER), also called Brainstem evoked response audiometry (BERA) should be done. After H. influenza meningitis sensor neural hearing loss occurs in 5-10% of patients during long term follow up. Therefore Auditory rain Stem Evoked Response is done to check the peripheral auditory system.