Wideband absorbance tympanometry: a novel method in identifying otosclerosis

Predictive accuracy of wideband absorbance in children with large vestibular aqueduct syndrome: A single-center retrospective study

“…Keefe et al [ 33 ] compared normal and surgically confirmed otosclerosis and found that the AUC was 0.95 at 2800 Hz for TPP condition and 0.88 at 1400 Hz for ambient pressure condition for WBA. Karuppannan and Barman [ 34 ] also observed high diagnostic values of WBA in otosclerosis at 1000 Hz (>90 % sensitivity and specificity). Aithal et al [ 30 ] evaluated normal and surgically confirmed otitis media with effusion and found that the highest AUCs were for WBA at ambient pressure with the frequency of 1500 Hz (0.92), WBA at tympanometric peak pressure with the frequency of 1250 Hz (0.91).…”

Wideband Acoustic Absorbance in Otosclerosis: Does Stapedotomy Restore Normal Tympanic Cavity Function?*

“…Many studies have shown reduced absorbance, or increased reflectance, in otosclerotic ears, 14 15 16 17 18 19 particularly in the low frequency band. This reduction in absorbance occurs due to increased stiffness in the system, which leads to a decreased acoustic sensitivity to low frequencies and, consequently, increased reflection.…”

“…[7][8][9][10][11] Compared with traditional tympanometry, absorbance or reflectance measurements provide much more information on the state of the middle ear and allow more comprehensive assessment of middle-ear disorders. 12,13 Many studies have shown reduced absorbance, or increased reflectance, in otosclerotic ears, [14][15][16][17][18][19] particularly in the low frequency band. This reduction in absorbance occurs due to increased stiffness in the system, which leads to a decreased acoustic sensitivity to low frequencies and, consequently, increased reflection.…”