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 7 The influence of the depth of the Carhart effect assessed preoperatively on the change in the average cochlear reserve after surgical treatment in patients with type 3 tympanoplasty.
| Carhart effect | n | ABG Delta Average (dB) | ABG Delta SD (dB) | ABG Delta Me (dB) | ABG Delta Min (dB) | ABG Delta Max (dB) | COM Type 3 tympanoplasty |
|---|---|---|---|---|---|---|---|
| <15 dB | 27 | 5.9 | 13.0 | 6.3 | −23.8 | 32.5 | |
| >15 dB | 71 | 0.8 | 17.2 | 8.8 | −26.3 | 18.0 | =0.083 |
| 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. | |||||||