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Abstract
To perform a systematic review, comparing hearing outcomes of atresiaplasty versus osseointegrated bone conduction device (OBCD) in congenital aural atresia (CAA) patients.Approximately 107 studies, published from 1975 to 2012, evaluating hearing outcomes after atresiaplasty and/or OBCD in CAA patients were identified through a PubMed search.Articles that evaluated external auditory canal stenosis alone, did not report speech reception threshold (SRT), pure tone average (PTA), hearing gain, or air-bone gap (ABG) or had less than 5 patients were excluded. For authors or institutions with multiple reports, the largest or most recent study was included. Forty-one articles satisfied our inclusion and exclusion criteria.The number and percentage of ears with a postoperative SRT, PTA, ABG less than 30 dB, and/or average hearing gain were extracted. The total number of ears and the timing of the postoperative audiogram were also noted.Of the atresiaplasty ears, 73.8% (95% CI, 62.2%-85.4%), had a SRT less than 30 dB (338 ears), 60.3% (95% CI, 45.8%-74.8%) had a PTA less than 30 dB (390 ears), and 68.9% (95% CI, 59.4%-78.3%) had an ABG less than 30 dB (852 ears). The average hearing gain was 24.1 dB (95% CI, 21.62-26.51) for 516 ears. Hearing outcomes deteriorated with time. Of OBCD patients, 95.9% (95% CI, 91.5%-100.0%) had a PTA less than 30 dB (77 ears), and 98.2% (95% CI, 94.5%-100.0%) had an ABG less than 30 dB (47 ears); the average hearing gain was 38.0 dB (95% CI, 33.14-45.22) in 100 ears.The OBCD has better hearing outcomes compared with atresiaplasty in patients with CAA.
View details for DOI 10.1097/MAO.0b013e3182a36065
View details for PubMedID 24005171