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 5 Chronic otitis media. Association of preoperative depth of Carhart effect with change in average values of 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 | 44 | 13.75 | 3.54 | 12.75 | 1.25 | 16.25 | |
| >15 dB | 38 | 5.65 | 12.35 | 3.75 | −22.50 | 35.00 | <0.001 |
| Age group 30–59 years old | |||||||
| <15 dB | 96 | 2.55 | 14.68 | 7.50 | −26.25 | 21.25 | |
| >15 dB | 72 | 2.72 | 12.43 | 4.38 | −27.50 | 31.25 | =0.469 |
| Age group over 60 years old | |||||||
| <15 dB | 25 | 1.45 | 7.82 | 0.90 | −11.25 | 13.75 | |
| >15 dB | 45 | 7.01 | 9.53 | 4.38 | −1.25 | 20.55 | =0.008 |
| COM – chronic 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. | |||||||