This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
[{'content': 'A 10 years boy presented with sensory neural deafness not benefited with hearing aid, Next treatment is \nSelect and explain. \nA. Cochlear implant, B. Fenestromy, C. Stapedectomy, D. Stapes fixation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A. i.e. (Cochlear implant) (125- Maqbool 11th) (121- Dhingra 4th)COCHLEAR IMPLANT - is indicated in patients with bilateral severe sensorineural deafness who do not respond to amplified sound stimuli* Cochlear implants are more useful in post lingually deaf patients i.e. who lost their hearing after acquisition of language* Stapedectomy with prosthesis replacement is the treatment of choice for otosclerosis*** Pathway for extension of the infection from meninges to labyrinth - Cochlear aqueduct*** **Cochlear implants electrodes are most commonly placed at cochlea to directly stimulate the fibre of VIII. nerve', 'role': 'assistant'}]