CAJ | 학술논문

目的：分析1-36月婴幼儿的宽频声能吸收率（wideband acoustic energy absorbance ，WBA）测试结果，为其临床应用提供参考。方法选取1-36月、声导抗测试结果正常、畸变产物耳声发射，测试正常的婴幼儿共172名（337耳）。根据月龄分组：1-2月组，共86耳；3-6月组，共61耳；7-12月，共97耳；13月-36月组，共93耳。对各组婴幼儿进行宽频声能吸收率测试，比较各个月龄段的声能吸收率曲线分布特点，分析吸收率随年龄增长的变化情况。结果1、声能吸收率随月龄变化，频率-吸收率曲线逐渐由“~”转变成“∧”形。2、7-12月和13-36月组中有1/2的频率的声能吸收率值差别无统计学意义。3、四组声能吸收率各个频率的标准差SD（standard deviation）的均值分别为0.2066、0.1731、0.1393、0.1583。结论1、随月龄增加，频率-吸收率曲线逐渐由“~”转变成“∧”形，中高频的声能吸收率效能逐渐高于低频和高频。2、7月以后，吸收率曲线形态逐渐趋于稳定，组内变化差异减小。3、随月龄的变化声能吸收率曲线范围也逐渐变化，当在容许的变化范围内波动时，仍可视为正常中耳。且月龄越小，声能吸收率值波动越大，表明中耳所处的发育状态越不稳定。
목적：분석1-36월영유인적관빈성능흡수솔（wideband acoustic energy absorbance ，WBA）측시결과，위기림상응용제공삼고。방법선취1-36월、성도항측시결과정상、기변산물이성발사，측시정상적영유인공172명（337이）。근거월령분조：1-2월조，공86이；3-6월조，공61이；7-12월，공97이；13월-36월조，공93이。대각조영유인진행관빈성능흡수솔측시，비교각개월령단적성능흡수솔곡선분포특점，분석흡수솔수년령증장적변화정황。결과1、성능흡수솔수월령변화，빈솔-흡수솔곡선축점유“~”전변성“∧”형。2、7-12월화13-36월조중유1/2적빈솔적성능흡수솔치차별무통계학의의。3、사조성능흡수솔각개빈솔적표준차SD（standard deviation）적균치분별위0.2066、0.1731、0.1393、0.1583。결론1、수월령증가，빈솔-흡수솔곡선축점유“~”전변성“∧”형，중고빈적성능흡수솔효능축점고우저빈화고빈。2、7월이후，흡수솔곡선형태축점추우은정，조내변화차이감소。3、수월령적변화성능흡수솔곡선범위야축점변화，당재용허적변화범위내파동시，잉가시위정상중이。차월령월소，성능흡수솔치파동월대，표명중이소처적발육상태월불은정。
Objective Wideband acoustic energy absorbance (WBA) was tested in 172 infants aged 1-36 months in an attempt to provide references for potential clinical applications. Methods Infants (n=172, 337 ears) aged 1-36 months who had passed tympanometry and distortion product otoacoustic emission (DPOAE) test were divided into 4 groups based on their age: Group 1(1-2 months, 86 ears), Group 2 (2-6 months, 61 ears), Group 3 (6-12 months, 97 ears) and Group 4 (above 12 months, 93 ears). All the infants re-ceived WBA test. Variations of absorbance among different groups were compared and relations between ab-sorbance characteristics and age were investigated. Results 1) Along with age, the WBA frequency-absor-bance curve changed from a“~”shape to a“^”shape. 2) WBA showed no significant differences for half of the tested frequencies between Groups 3 and 4. 3) The average WBA standard deviations for the four age groups were 0.2066, 0.1731, 0.1393 and 0.1583, showing a trend of decrease with age. Conclusions 1) WBA frequency-absorbance rate curves change with age, with gradually increasing mid frequency WBA relative to low and high frequencies. 2) The frequency-absorbance rate curve appears to stabilize after 7 months. 3) WBA variations also decrease along with age, indicating variable middle ear development at younger ages.