Measurement of hearing thresholds

YC Yeonjoo Choi
WK Woo Seok Kang
SH Seung Cheol Ha
SL Sang Hun Lee
JA Joong Ho Ahn
JC Jong Woo Chung
HP Hong Ju Park
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Hearing thresholds was determined by pure tone audiometry (PTA), and the mean hearing levels were expressed as the average of the hearing thresholds at 0.5, 1, 2, and 4 kHz (four-frequency average). All patients were evaluated by PTA prior to BDET and at 3 months and at least yearly after dilation. The air-bone gap was measured before and after BDET.

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