[The effects of endoscopic nasal surgery on the function of eustachian tube].

Objective: To observe the effects of endoscopic nasal surgery on the function of eustachian tube.

Method: The tympanometric pressure, static compliance and gradient of tympanogram were measured for sinuses and turbinate group (10 cases) and nasal septum group (10 cases) at 1, 3, 5 and 10 days after operation by using audiometer acoustic impedance.

Result: The peak pressure of tympanogram of two groups were droped obviously 1-3 days after operation. In sinuses and turbinate group, it droped from -85.5 dapa to -148.0 dapa (at 1 day) and -139.0 dapa at 3 days, compared to the pre-operation, the differences were significantly (P < 0.01). In nasal septum group, it droped from -51.0 dapa to -111.5 dapa at 1 day and -96.0 dapa at 3 days, compared to the pre-operation, the differences were also significantly (P < 0.01). The level of static compliance, gradient were no significantly difference between before and after operation (P > 0.05).

Conclusion: The eustachian tube of patients of two groups were blocked at the early stage of post-operation. The treatment of active anti-infection, promptly cleaning of nasal cavity, relexing the pressure of nasal cavity as soon as possible, all of this can reduce the effect of operation on the function of eustachian tube.