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 ... https://miamistares.shop/product-category/valves/