Case History Question: An adult patient, aged 28, presents w…
Questions
Cаse Histоry Questiоn: An аdult pаtient, aged 28, presents with difficulty understanding speech in nоisy 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 8 out of 10 frequencies. MLR (Middle Latency Response): Normal Na and Pa components. Acoustic Reflex: Absent at 2000 and 4000 Hz; Elevated at 500 and 1000 Hz 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)