Intratympanic steroid injection in cases of idiopathic sudden sensorineural hearing loss

Abstract

Idiopathic Sudden Sensorineural Hearing Loss(ISSNHL) is a an irritating problem that continues to pose a diagnostic and therapeutic enigma for the otologist. It is most commonly defined as sensorineural hearing loss of 30dB or greater over at least three contiguous audiometric frequencies occurring within a 72-hr period. It is not one of the more common causes of HL, disproportionate interest in ISSNHL exists most likely because it is one of the few reversible (sensorineural) hearing losses encountered by clinicians. Intratympanic steroid injection is increasingly used in the management of ISSNHL as it offers the potential for directed therapy of a high concentration to the inner ear with avoidance of systemic side effects. It also can improve hearing function in patients with ISSNHL after the failure of systemic steroid treatment.

Keywords

• idiopathic sudden sensorineural hearing loss; intratympanic steroid injection