Carhart’s notch seen at:
Correct Answer: 2 KHz
Description: Ans: c (2 KHz) Ref: Dhingra, 3rd ed, p. 115 & p. 87Dip in bone conduction in otosclerosis & maximum occurs at 2000 Hz called Carhart notchDip Disappears after successful stapedectomy2 KHz dip - Otosclerosis4 KHz dip - Noise induced hearing loss8 KHz dip - Senile otosclerosis
Category:
ENT
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