Case History Question: An adult patient, aged 28, presents w…
Case History Question: An adult patient, aged 28, presents with difficulty understanding speech in noisy environments despite having normal audiometric thresholds. The patient reports no history of ear infections or trauma. The following tests were conducted: ABR (Auditory Brainstem Response): Absent waveforms at all stimulus intensities. OAE (Otoacoustic Emissions): Present and normal at all frequencies. MLR (Middle Latency Response): Abnormal with delayed Na and Pa components. 1) Given these test results and a normal audiogram, what is the most likely diagnosis? (2 points) 2) Explain why the diagnosis you selected is most likely in this case. Discuss the underlying mechanisms related to the test results. (2 points)