Audiogram Interpretation

Two patients undergo audiometry for hearing loss. Patient A shows a characteristic notch at 4 kHz with air and bone conduction equally affected, normal thresholds at 250–2000 Hz, and elevated thresholds at 4 kHz (40 dB HL) that improve slightly at 8 kHz (35 dB HL). Patient B shows a gradually rising audiogram with thresholds normal at 250 Hz (10 dB HL) and progressively elevated toward high frequencies (8 kHz = 60 dB HL), with air-bone gap of 25 dB at all frequencies. Which finding best distinguishes noise-induced hearing loss from otosclerosis in these two patients?

On an audiogram, which frequency range shows the greatest sensitivity to sensorineural hearing loss in noise-induced hearing loss?

A 35-year-old woman with a 10-year history of episodic vertigo, fluctuating hearing loss, and tinnitus presents with an acute attack. Audiometry shows low-frequency SNHL (250–1000 Hz). What is the drug of choice for acute symptom management in this condition?

A 62-year-old man presents with progressive bilateral high-frequency hearing loss over 10 years. Audiogram shows a characteristic 'ski-slope' pattern with air-bone gap absent. Which is the most common cause of this audiometric finding?

A 35-year-old woman with progressive unilateral hearing loss and tinnitus undergoes audiometry. The audiogram shows a unilateral sensorineural hearing loss with a relatively flat configuration across frequencies. MRI reveals a mass in the internal acoustic meatus. Which is the most common histological type of this lesion?