Full-Text Search:
Home|About CNKI|User Service|中文
Add to Favorite Get Latest Update

Destrution of ossicular chain and it's impact on hearing of patients with tympanosclerosis

CHEN Jing ZHENG Yan(Department of Otolaryngology,West China Hospital,Sichuan University,Chengdu,610041,China)  
Objective:To study the destruction ossicular chain's impact on hearing of patients with tympanosclerosis.Method:A restrospective review was conducted in 115 patients with tympanosclerosis,all patients were devided 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(P0.01).Difference were significant for air bone gap(ABG) between A,B groups and C group(P0.01),there was no difference for ABG between A and B group(P0.01).Difference were significant for air conduction threshold between 0.5,1.0 kHz and 2,4 kHz in A,B groups(P0.01),but there was no significant for same data in C group(P0.01).Difference were significant for average bone conduction,1,2,4 kHz bone-conduction threshold between A group and B,C group(P0.01).The rate of Carchart notch was low and had no difference between 3 group(P0.01).Conclusion:The ossicular chain was fixed in patients who′s PTA≥(54.31±13.19)dB HL and was interrupted who′s PTA≥(63.90±20.29)dB HL or ABG≥(33.23±8.49)dB HL.The rising shaped curve in air-conduction audiograph may indicate the ossicular chain was fixed,and the smoothshape curve may indicate the ossicular chain was interrupted.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©CNKI All Rights Reserved