TY - JOUR
T1 - Audiometry with nasally presented masking noise
T2 - Novel diagnostic method for patulous eustachian tube
AU - Hori, Yoko
AU - Kawase, Tetsuaki
AU - Hasegawa, Jun
AU - Sato, Toshinori
AU - Yoshida, Naohiro
AU - Oshima, Takeshi
AU - Suetake, Mitsuko
AU - Kobayashi, Toshimitsu
PY - 2006/8
Y1 - 2006/8
N2 - OBJECTIVE: Nasal-noise masking audiometry was developed to assess the acoustic transfer function from the nasopharyngeal cavity to the middle ear via patulous eustachian tube (ET). STUDY DESIGN: Prospective. SETTING: Tertiary referral center. PATIENTS: Twenty-seven ears of 18 patients with patulous ET and 20 ears of 10 healthy subjects with no history of ear disease or complaints of aural symptoms. MAIN OUTCOME MEASURES: Audiometric measurement was conducted with and without masking noise presented in the nasal cavity. RESULTS: The masking effect of nasally presented noise caused elevation of the threshold for the tone presented in the external auditory canal. This threshold elevation was significantly greater, particularly in the lower-frequency region, in ears with patulous ET and was decreased to the normal range after obstructive treatment of the patulous ET. CONCLUSION: Nasal-noise masking audiometry is a simple and effective way to identify patulous ET.
AB - OBJECTIVE: Nasal-noise masking audiometry was developed to assess the acoustic transfer function from the nasopharyngeal cavity to the middle ear via patulous eustachian tube (ET). STUDY DESIGN: Prospective. SETTING: Tertiary referral center. PATIENTS: Twenty-seven ears of 18 patients with patulous ET and 20 ears of 10 healthy subjects with no history of ear disease or complaints of aural symptoms. MAIN OUTCOME MEASURES: Audiometric measurement was conducted with and without masking noise presented in the nasal cavity. RESULTS: The masking effect of nasally presented noise caused elevation of the threshold for the tone presented in the external auditory canal. This threshold elevation was significantly greater, particularly in the lower-frequency region, in ears with patulous ET and was decreased to the normal range after obstructive treatment of the patulous ET. CONCLUSION: Nasal-noise masking audiometry is a simple and effective way to identify patulous ET.
KW - Audiometry
KW - Autophony
KW - Patulous eustachian tube
UR - http://www.scopus.com/inward/record.url?scp=33746861245&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33746861245&partnerID=8YFLogxK
U2 - 10.1097/01.mao.0000226301.21080.1c
DO - 10.1097/01.mao.0000226301.21080.1c
M3 - Article
C2 - 16868507
AN - SCOPUS:33746861245
SN - 1531-7129
VL - 27
SP - 596
EP - 599
JO - American Journal of Otology
JF - American Journal of Otology
IS - 5
ER -