2001 Volume 11 Issue 1 Pages 43-47
We reported postoperative hearing results of 96 ears operated on by tympanoplasty type III with columella and 63 ears by type IV with columella between April 1994 and March 1999.
The hearing result was considered as successful when the postoperative hearing level satisfied with at least one of three conditions as follows: 1) air-bone gap less than 15dB, 2) hearing gain more than 15dB, or 3) hearing level above 30dB. Success rates were 67.7% for type III and 58. 7% for type IV.
Hearing results were analyzed according to preoperative bone conduction thresholds (≤30dB or>30dB), underlying diseases, prosthesis, staged procedure for cholesteatoma (one stage or two stage), and reconstruction methods of the external auditory canal for cholesteatoma.
