Groth P, Ivarsson A, Tjernström O
Acta Otolaryngol. 1982;93(1-6):261-7. doi: 10.3109/00016488209130881.
With the aid of a quantitative impedance method and a pressure chamber, the capacity of the Eustachian tube to equilibrate pressure differences across the tympanic membrane was repeatedly determined in 20 otologically healthy men. The test-retest reliability was calculated from five determinations of static pressure equilibration of over- and underpressures of 10 cmH2O and 10 determinations of equilibration of dynamic pressure changes. The pressure opening level of the tube during pressure increase in the middle ear was significantly lowered in the initial determinations. The residual pressure in the middle ear after maximum equilibrating efforts during pressure increase in the chamber was also significantly lowered. For the rest, the test-retest reliability was good. Ears with perfect tubal function had better test-retest reliability for all parameters tested than ears with poorer function. The significance of repeated measurements and the value of reliability determinations are discussed.
借助定量阻抗法和压力室，对20名耳科健康男性反复测定了咽鼓管平衡鼓膜两侧压力差的能力。通过对10 cmH₂O的正压和负压静态压力平衡的五次测定以及动态压力变化平衡的十次测定来计算重测信度。在最初的测定中，中耳压力增加期间咽鼓管的压力开放水平显著降低。在压力室压力增加期间最大平衡努力后中耳的残余压力也显著降低。其余方面，重测信度良好。与功能较差的耳朵相比，具有完美咽鼓管功能的耳朵在所有测试参数上具有更好的重测信度。讨论了重复测量的意义和信度测定的价值。
