Destrution of ossicular chain and it's impact on hearing of patients with tympanosclerosis.
- Author:
Jing CHEN
1
;
Yan ZHENG
Author Information
1. Department of Otolaryngology, West China Hospital, Sichuan University, Chengdu 610041, China.
- Publication Type:Journal Article
- MeSH:
Adolescent;
Adult;
Aged;
Audiometry, Pure-Tone;
Bone Conduction;
Child;
Ear Ossicles;
pathology;
Female;
Hearing;
Humans;
Male;
Middle Aged;
Myringosclerosis;
pathology;
physiopathology;
Retrospective Studies;
Young Adult
- From:
Journal of Clinical Otorhinolaryngology Head and Neck Surgery
2013;27(1):27-30
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To study the destruction ossicular chain's impact on hearing of patients with tympanosclerosis.
METHOD:A retrospective review was conducted in 115 patients with tympanosclerosis, all patients were divided into 3 groups, including normal ossicular chain structure (A group), fixed ossicular chain(B group), and interrupted ossicular chain (C group). The audiological feature of the patients were compared between the 3 group.
RESULT:Difference were significant for PTA, 0.5, 1.0, 2.0, 4.0 kHz air conduction threshold between 3 group (P < 0.01). Difference were significant for air bone gap (ABG) between A, B groups and C group (P < 0.01), there was no difference for ABG between A and B group (P > 0.01). Difference were significant for air conduction threshold between 0.5, 1.0 kHz and 2, 4 kHz in A, B groups (P < 0.01), but there was no significant for same data in C group (P > 0.01). Difference were significant for average bone conduction, 1, 2, 4 kHz bone-conduction threshold between A group and B, C group (P < 0.01). The rate of Carhart notch was low and had no difference between 3 group (P > 0.01).
CONCLUSION:The ossicular chain was fixed in patients who's PTA > or = (54.31 +/-13.19) dB HL and was interrupted who's PTA > or = (63.90 +/- 20.29) dB HL or ABG > or = (33.23 +/- 8.49) dB HL. The rising shaped curve in air-conduction audiograph may indicate the ossicular chain was fixed,and the smooth shape curve may indicate the ossicular chain was interrupted.
