Auditory‐evoked responses in benign intracranial hypertension syndrome

Abstract

In this study, auditory brainstem-evoked responses were conducted on 28 patients with otologic symptoms (pulsatile tinnitus, hearing loss, aural fullness) secondary to benign intracranial hypertension syndrome. Abnormalities consisting mainly of prolonged interpeak latencies were detected in one third of these patients. It is speculated that the pathophysiologic mechanisms responsible for these auditory brainstem-evoked abnormalities are stretching-compression of the cochlear nerve and brainstem caused by the intracranial hypertension and/or primary edema of the same structures due to the benign intracranial hypertension syndrome itself. Normalization or improvement was noticed in the majority of the patients after management. Since the number of patients in this study is small, it is felt that the diagnostic and prognostic value of this test needs further evaluation.

Pearls & Oy-sters: A rare presentation of chronic intracranial hypertension with concurrent deafness and blindness

“…The classic reported otologic features of elevated ICP are tinnitus and aural fullness; however, both conductive hearing loss and SNHL have been reported. 4,5 Our patient presented with bilateral severe auditory neuropathies possibly due to stretch of the vestibulocochlear nerves from the increased ICP. 5 Protrusion of the meningoceles into the IACs was also deemed to be a contributing factor to the hearing loss in our case.…”

“…4,5 Our patient presented with bilateral severe auditory neuropathies possibly due to stretch of the vestibulocochlear nerves from the increased ICP. 5 Protrusion of the meningoceles into the IACs was also deemed to be a contributing factor to the hearing loss in our case. Petrous apex cephaloceles and meningoceles have been described as rare radiologic signs of elevated ICP.…”

Brainstem Auditory Evoked Potential Responses in Primary Hypersensitive Patients and Its Correlation With Mean Arterial Blood Pressure

“…[5,6,7] Prolonged interpeak latencies have also been noticed in benign intracranial hypertensive patients and authors proposed stetchingcompression of cochlear nerve as a mechanism for this. [10] As far as correlation of waves of BAEPs with BP is concerned conflicting data is available. Rosen et al stated that in a study carried out with hypertensive patients in the USA, there was a correlation between high blood pressure and hearing loss in high frequencies.…”

Auditory Brainstem Responses & Nerve Conduction Velocity in Essential Hypertension

“…Normalization or improvement was noticed in the majority of the patients after management of intracranial hypertension. Since the number of patients in this study is small, the diagnostic and prognostic value of this test needs further evaluation [15]. Significant prolongation of waves IV, V and VII of ABRs were also seen in rabbits with intra-cranial hypertension compared with controls [16].…”