The perilymphatic hypertension syndrome.

Area of Science:

• Otolaryngology
• Audiology
• Pediatric Medicine

Background:

• Perilymphatic hypertension is typically associated with intraoperative complications like gushers during stapes surgery.
• Underlying conditions include modiolus defects or enlarged cochlear aqueducts, facilitating cerebrospinal fluid entry into the perilymphatic space.
• This syndrome has been identified in pediatric populations, exhibiting distinct audiological characteristics.

Purpose of the Study:

• To describe the audiological patterns associated with perilymphatic hypertension in children.
• To investigate the impact of this condition on hearing loss and auditory function.
• To evaluate the effectiveness of hearing aids in managing the hearing deficits.

Main Methods:

• Case identification of children diagnosed with perilymphatic hypertension.
• Audiological assessments including pure-tone audiometry, tympanometry, and stapedial reflex testing.
• Real-ear measurements to evaluate hearing aid performance, particularly insertion gain.

Main Results:

• Patients consistently presented with mixed hearing loss.
• An air-bone gap was observed, yet stapedial reflexes were present.
• Children demonstrated a benefit from hearing aids, but with limited low-frequency insertion gain.

Conclusions:

• Perilymphatic hypertension in children presents a recognizable audiological profile.
• The presence of stapedial reflexes despite an air-bone gap is a key diagnostic feature.
• Hearing aids can provide some auditory benefit, though low-frequency amplification may be challenging.