Tympanosclerosis is a complication of recurrent middle ear infections. Surgery for recurrent middle ear infects may be complicated by the onset or worsening of tympanosclerosis. Dong et al reported a score to identify a patient at increased risk prior to surgery. The authors are from Zhejian University.
Parameters:
(1) sex
(2) air bone gap in dB hearing loss at 250 Hz
(3) aditus ad antrum blockage (aditus ad mastoid antrum: a large irregular aperture which leads back from the epitympanic recess into an airspace
(4) eardrum calcification type
(5) number of years with otitis media
Parameter
Finding
Points
sex
male
0
female
1
air bone gap
< 45
0
>= 45
1
aditus ad antrum
not blocked
0
blocked
1
eardrum calcification
none
0
Type I
3
Type II
2
number of years with otitis
< 10 years
0
>= 10 years
1
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 7
• The higher the score the greater the risk of tympahnosclerosis.
Clinical Score
Probability of TS
0
0
1
1.8%
2
4.6%
3
12.8%
4
29%
5
59%
6
82%
7
94%
Performance:
• The area under the ROC curve is 0.89.
To read more or access our algorithms and calculators, please log in or register.
