Retrospective cohort study on hearing outcome after transmastoid plugging in superior semicircular canal dehiscence syndromeRetrospective cohort study on hearing outcome after transmastoid plugging in superior semicircular canal dehiscence syndrome
Faculty of Medicine and Health Sciences
Translational Neurosciences (TNW)
Clinical otolaryngology. - Oxford
(2015), p. 1-13
University of Antwerp
1.In case of incapacitating symptoms, surgical treatment can be offered to patients with confirmed superior semicircular canal dehiscence syndrome. Plugging and capping of the superior semicircular canal are most effective in terms of symptom relief. Both the middle fossa and the transmastoid approach have been reported to reach the superior semicircular canal. 2.However, the middle fossa approach has potential complications including epidural hematoma, seizures, cerebrospinal fluid leakage, facial palsy, etc. Moreover, plugging through the middle fossa approach has been reported to produce up to 25% of sensorineural hearing loss. 3.In our case series of 12 patients that underwent transmastoid plugging, none of the patients experienced postoperative sensorineural hearing loss. None of the patients experienced epidural hematoma, seizures, cerebrospinal fluid leakage or facial palsy. 4.We can confirm the high rate of symptom relief reported in earlier studies on superior semicircular canal plugging, which presents a reliable treatment option to the patient that suffers from incapacitating autophony and hyperacusis of bone-conducted sounds. 5.Our results demonstrate that transmastoid plugging of the superior semicircular canal is safe and effective in preserving or improving hearing. No sensorineural hearing loss was observed in our series.