[Characteristics of tympanic cavity pressure and static compliance in 0-6 years old children].
OBJECTIVE
To explore the characteristics of tympanic cavity pressure and static compliance in different years old children.


METHODS
302 cases (567 ears) were studied. All cases were divided into five groups according to their age. Their tympanic cavity pressure and static compliance were tested.


RESULTS
Most tympanic cavity pressure ranged from +50 to -50 dapa in all groups. The volume of static compliance in group one is the largest (0. 71 ml), and it changed with the age. It gradually decreased from 3 month to 3 years old but increased after three years old until 6 years old then returned to the level in 1 year old.


CONCLUSIONS
The tympanic cavity pressure and static compliance are relevant to the age when children are small than 6 years. This characteristic must be considered on clinic diagnosis of middle ear disease and the evaluation of hearing.
Luo
Renzhong
R
Department of Otolaryngology, Guangzhou Children's Hospital, Guangzhou 510120.
Wen
Ruijin
R
Wang
Mei fen
Mf
Zhong
Jianwen
J
D000158:Acoustic Impedance Tests / Q000592:standards*; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D004432:Ear, Middle / Q000502:physiology*; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D011312:Pressure; D012016:Reference Values