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Otolaryngol Head Neck Surg. 2014 Sep;151(3):478-83. doi: 10.1177/0194599814538233. Epub 2014 Jun 23.

Outcomes following Semicircular Canal Plugging.

Author information

1
House Clinic, Los Angeles, California, USA jgoddard@hei.org.
2
House Clinic, Los Angeles, California, USA.

Abstract

OBJECTIVES:

To examine audiometric outcomes, symptom control rates, and complication rates following semicircular canal plugging for superior semicircular canal dehiscence syndrome.

STUDY DESIGN:

Retrospective chart review.

SETTING:

Private, neurotologic tertiary referral center.

SUBJECTS AND METHODS:

Patients undergoing semicircular canal plugging for superior semicircular canal dehiscence syndrome from January 1, 2007, to December 31, 2012. Pre- and postoperative audiometry, vestibular testing, operative findings, and clinical symptoms were assessed through chart review.

RESULTS:

A total of 24 ears underwent a canal plugging procedure during the study period for superior canal dehiscence syndrome. Pre- and postoperative air conduction pure-tone averages were 21.1 and 22.5 dB (P = .42, not significant [NS]). The average pre- and postoperative word recognition scores were 95.8% and 95.1% (P = .48, NS). Vestibular evoked myogenic potential data showed reduced thresholds in 7 patients with canal dehiscence. Complications were limited to a single, temporary facial weakness. Complete symptom improvement was noted in 35.7% of all patients, while at least partial symptom improvement was found in over 80% of patients.

CONCLUSION:

Semicircular canal plugging procedures are associated with excellent hearing outcomes and may reduce preoperative symptoms in patients with superior semicircular canal dehiscence.

KEYWORDS:

canal plugging; middle fossa approach; sensorineural hearing loss; superior semicircular canal dehiscence

PMID:
24962178
DOI:
10.1177/0194599814538233
[Indexed for MEDLINE]

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