22 January 2025 : Database Analysis
Role of the Carhart Effect and Outcomes from Surgery: A Retrospective Study of 532 Patients with Conductive Hearing Loss Due to Otosclerosis, Otitis Media with Effusion, and Chronic Otitis Media
Kamila Szpak
1ABCDEF, Agnieszka Wiatr 2BCDE, Maciej Wiatr 2ADEG*
DOI: 10.12659/MSM.947061
Med Sci Monit 2025; 31:e947061
Table 4 Exudative otitis media. Association of preoperative depth of Carhart effect with change in average values of the cochlear reserve after surgical treatment in the considered age groups.
| Carhart effect | n | Delta ABG Average (dB) | Delta ABG SD (dB) | Delta ABGMe (dB) | Delta ABGmin (dB) | Delta ABGmax (dB) | OME |
|---|---|---|---|---|---|---|---|
| Age group 18–29 years old | |||||||
| <15 dB | 25 | 16.88 | 2.05 | 16.88 | 15.00 | 18.75 | |
| >15 dB | 13 | 5.65 | 13.75 | 3.75 | −22.50 | 31.00 | <0.001 |
| Age group 30–59 years old | n | ||||||
| <15 dB | 15 | 3.75 | 1.25 | 4.88 | 3.75 | 9.50 | |
| >15 dB | 7 | 6.13 | 3.90 | 3.75 | 0.00 | 21.25 | =0.018 |
| Age group over 60 years old | n | ||||||
| <15 dB | 8 | 2.78 | 2.64 | 5.00 | 0.00 | 5.00 | |
| >15 dB | 5 | 16.88 | 2.05 | 16.88 | 15.00 | 18.75 | <0.001 |
| OME – exudative otitis media; n – number of patients; ABG – air-bone gap; dB – decibel; – significance level; SD – standard deviation; Me – median; Min – minimum; Max – maximum; Delta – shift in BC after performed treatment. | |||||||