ABSTRACT
Objective To study the reference values and related factors of tympanometry for children between 2 and 15 year-old .Methods From December 2014 to March 2015 ,a total of 120 children (240 ears total) among 2 to 15 year-old (6 .95-3 .12) with Type A tympanograms received the singe -frequency component tympanometry test ,including acoustic equivalent volume (Vea ) ,peak-compensated static admittance (Ytm ) ,tympanometric peak pressure (TPP) and tympanometric gradient (TG) .With the results of each test ,the relationships were conducted according to the differences of age and gender .The outcomes also were compared with the recent studies abroad .Re-sults The difference of TPP was statistically significant among the gender group ,and the differences of Vea and TPP were statistically significant between different age groups ,2-6 year pre-school children and 7~15 yr school children .Conclusion The normative values of each tests were significantly different between Chinese and western children of 2-15 years .We would speculate that the differences of TPP in the age and gender group have changed with the physiological characteristics of Eustachian tubes and eardrums and the differences among male and female .
ABSTRACT
Objective The purpose of this study w as to obtain tympanometric norms in Sichuan young adult population and compare the results with data obtained for a non-Hispanic Caucasian population. Methods Normative values for peak compensated static acou stic admittance(Peak Ytm), acoustic equivalent volume(Vea), and tympanometric wi dth(TW) were obtained for 102 Sichuan young adults. Results Significant differences were fo und between Roup′s results and ous for Peak Ytm, Vea and TW. The present study showed lower Peak Ytm, smaller Vea and larger TW values overall. Gender differences were noted for Peak Ytm and Vea in Sichuan subjects . Male had higher Peak Ytm and bigger Vea values than female. Conclusion We should establish our own tympanometric norm s to guide our audiological clinical work.