Effection Of Different Probe Tone And Tympanometric Admittance Measurement Methods To Otitis Media Prediction

Objectiv To explore the effection of different probe tone and tympanometric admittancemeasurement methods to otitis media prediction,and to provide a clinical reference for choice ofprobe tone and measurement method in early infants.Methods Tympanograms with226Hz and1000Hz probe tones were obtained from normal infants (142ears) and infants with otitis media (90ears).Mean value,standard deviation, the90%range and95%mean confidence interval wererecorded as the variable to observe potential impacts on tympanometric admittance with226Hzprobe tone and tympanometric peak admittance with1000Hz probe tone by three differentmeasurement methods respectively according to Linder/Jerger classification,Baldwin classificationand baseline classification adapted from Baldwin.And the four indexes were tested withComparative analysis. Results Area under ROC curve of tympanometric admittance with226Hzprobe tone and tympanometric peak admittance with1000Hz probe tone by three differentmeasurement methods respectively were0.507、0.896、0.976、0.988in1to3month infantsand0.749、0.888、0.969、0.988in4to6month infants. Tympanometric peak admittance with1000Hz probe tone by three different measurement methods were significant better thantympanometric admittance with226Hz probe tone. Area under ROC curve of Tympanometricpeak admittance with1000Hz probe tone by baseline classification adapted from Baldwin are bigerthan others and the difference were significant（P＜0.05），but for the difference betweenBaldwin classification and baseline classification in4to6month infants（P＞0.05）.Conclusion①Tympanometric peak admittance with1000Hz probe tone were better than tympanometricadmittance with226Hz probe tone prediction of otitis media in1~6month infants.②Baselineclassification adapted from Baldwin were appropriate for measurement of tympanometric peakadmittance with1000Hz probe tone.