Spitzer J B, Newman C W
Ann Otol Rhinol Laryngol. 1984 Jan-Feb;93(1 Pt 1):48-51. doi: 10.1177/000348948409300112.
Short-term reliability of a tympanometric pressure-swallow technique for assessing eustachian tube (ET) ventilating efficiency was measured in 20 normals with intact tympanic membranes on otoadmittance and impedance instruments. Tympanograms were examined for middle ear pressure and amplitude after a swallow maneuver and manipulation of ear canal pressure in a repeated measures design. Test-retest correlations were examined for both pressure shift and amplitude. Poor reliability was obtained for pressure measures with otoadmittance, while high reliability was observed for pressure values on impedance trials and amplitude for both instruments. Findings suggested significant probability of misclassification of normals for repeated measures of ET efficiency, using the currently accepted criterion for minimum pressure shift.
采用耳声导纳和阻抗仪器，对20名鼓膜完整的正常人测量了用于评估咽鼓管（ET）通气效率的鼓室压力吞咽技术的短期可靠性。在重复测量设计中，通过吞咽动作和外耳道压力操作后，检查鼓室图的中耳压力和幅度。对压力变化和幅度均进行了重测相关性分析。耳声导纳测量压力的可靠性较差，而阻抗试验中的压力值以及两种仪器测量的幅度可靠性较高。研究结果表明，使用目前公认的最小压力变化标准对ET效率进行重复测量时，正常受试者存在显著的错误分类可能性。
