Over 1000 LAT procedures have been performed in the author's practice. LAT size has been correlated to patency time. LATs less than 1.0 mm in diameter heal within 2 weeks, LATs that are 1.5 mm heal within 3 weeks, and LATs that are 2.0 mm heal within 4 weeks. LAT successfully resolves persistent SOM in 80% of adult cases without the need for PE tube placement.10 Children of all ages tolerate the procedure well, and placement of PE tubes is avoided in almost half (46%) of these patients.

(Micromedics, Eagan, MN), evaluating tympanic cavity masses, checking the status of the middle ear and ossicular chain prior to mastoid-tympanoplasty, and evaluating the patency of the eustachian tube in cases of recurrent SOM or patulous eustachian tube. When there is an obvious history of trauma or surgical manipulation, office endoscopy is used to evaluate the round and oval windows for perilymph fistula.

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