Frequency‐Specific Hearing Outcomes after Use of a Powered Drill in Pediatric Type I Tympanoplasty. (2nd September 2014)

• Record Type: Journal Article
• Authors: Kent, David T.; Chi, David H.; Wine, Todd M.; Kisto, Dennis
• Is Part Of: Otolaryngology--head and neck surgery. Volume 151(2014)Supplement 1
• Page Start: P236
• Page End: P237
• Publication Date: 2014-09-02
• Subjects: Head -- Surgery -- Periodicals; Neck -- Surgery -- Periodicals; Otolaryngology -- Periodicals; 617.51
• DOI: 10.1177/0194599814541629a314
• Languages: English
• ISSNs: 0194-5998

Abstract

Abstract : Objectives: (1) Describe factors related to frequency‐specific hearing outcomes after type I tympanoplasty in pediatric patients. (2) Describe the effect of powered bone drilling on frequency‐specific hearing outcomes after type I tympanoplasty. Methods: Retrospective medical chart review (February 2006 to October 2011) of 492 consecutive pediatric otolaryngology patients undergoing type I tympanoplasty for tympanic membrane (TM) perforation of any etiology at a tertiary‐care pediatric otolaryngology practice. Data collected included air conduction at 250 to 8000 Hz, speech reception thresholds, bone conduction at 500 to 4000 Hz, and air‐bone gap at 500 to 4000 Hz. Demographic data obtained included sex, age, size, mechanism, location of perforation, and operative repair technique, as well as the use of a powered bone drill during surgery. Results: A downtrend in sensorineural hearing at 2000 and 4000 Hz was noted with the use of a powered drill during surgery, although no significant difference in sensorineural hearing or air‐bone gap was detected at 500, 1000, 2000, or 4000 Hz ( P >. 05). No significant change was detected in conductive hearing at 1000, 2000, 4000 Hz, or 8000 Hz ( P >. 05). Significant improvement was noted in lower‐frequency conductive hearing at 250 and 500 Hz ( P <. 001). Conclusions: No correlation between high‐frequency hearing loss and use of a powered drill during type I tympanoplasty was found in this pediatric population. Surgery was found to significantly improve conductive hearing at 200 and 500 Hz. Based on these results, use of a powered bone drill is not contraindicated during type I tympanoplasty.