Study report: association between pure tone average and ossicular status in chronic suppurative otitis media

Abstract

Prediction of ossicular status in chronic suppurative otitis media (CSOM) before tympanomastoidectomy was required for selection of surgical techniques. Some studies about prediction of ossicular status withpure tone average had revealed different results. This study aimed to prove correlation between pure tone average and ossicular status in CSOM patients whom underwent timpanomastoidectomy at Department of Otorhinolaryngology Head and Neck Surgery Dr. Soetomo Hospital Surabaya. This was an observational analytic study with retrospective cross sectional design using secondary data of medical record. Simple randomized sampling was derived from CSOM patients whom underwent tympanomastoidectomy and appropriated with inclusion and exclusion criterias. Ossicular status during the surgery was obtained from operation report based on Austin-Kartush criterias. Pure tone averageis the average threshold of hearing in speech frequencies that were 500, 1000, 2000, and 4000 Hz from audigram. About 65 CSOM patients who underwent tympanomastoidectomy were included to this. The ossicular erosion in the study was 63,1% while the normal ossicles (ossicular status O) was 36,9%. The most common ossicular erosion all ossicles (ossicular status D) 36,9%; followed by incus and stapes (ossicular status B) as 9,2%; incus (ossicular status A) as 10,7%; maleus and incus (ossicular status C) as 6,2%; and fixation of stapes (ossicular status F) as 3,1%. Two-way Anova test resulted p value = 0,00 (p < 0,05). There was correlation between pure tone average and ossicular statusin chronic suppurative otitis media patients. Increased pure tone average could estimate presence of ossicular erosion before surgery obtained in chronic suppurative otitis media patients.