This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
Which intervention is best in patients operated for bilateral acoustic neuroma for hearing rehabilitation? 
Select and explain. 
A. Brainstem hearing implant, B. Bilateral cochlear implant, C. Unilateral cochlear implant, D. High power hearing aid
A: Brainstem hearing implant
Answer: A: Brainstem hearing implant 
Explanation: Auditory brainstem implant (ABI) Brainstem implant is currently used only in patients with NF-2 and is always implanted simultaneously in the lateral recess of the fouh ventricle with tumor removal (usually during excision of the patient's second tumor). It is useful in patients who have had both cochleovestibular nerves sacrificed, since this implant stimulates the cochlear nuclear complex in the brainstem Such an implant is In unilateral acoustic neuroma, auditory brainstem implant (ABI) is not necessary as hearing is possible from the contralateral side but in bilateral acoustic neuroma as in neurofibromatosis-2, rehabilitation is required by ABI Dhingra 6th/ed