不同分娩方式新生儿自动听性脑干反应听力初筛的最佳时间探讨

目的 探讨应用自动听性脑干反应(automatic auditory brainstem response,AABR)对不同分娩方式新生儿进行听力初筛的最佳时间.方法 应用Chirp声诱发的AABR(Chirp-AABR)对2016年8月1日至2016年10月31日出生的550例新生儿(顺产组300例,剖宫产组250例)进行听力初筛,顺产组各有100例分别在出生后<24 h、24~48 h、48~72 h三个时间段进行听力初筛,剖宫产组分别有50、100和100例在上述三个时间段进行听力初筛;未通过者42天采用畸变产物耳声发射和AABR进行复筛,复筛未通过者3个月内进行听力学诊断.结果 顺产组新生儿出生后24~48 h内初筛通过率(93.00%)显著高于<24 h者(83.00%)(x2=4.735,P=0.03<0.05),而与48~72 h初筛者通过率(95.00%)比较差异无统计学意义(x2=0.355,P=0.55>0.05);剖宫产组新生儿出生后24~48 h初筛通过率(83.00%)显著高于<24 h者(68.00%)(x2=4.371,P=0.04<0.05),而显著低于48~72 h的通过率(94.00%)(x2=5.944,P=0.02<0.05).结论 顺产新生儿应用AABR听力初筛可在出生后24~48 h进行,而剖宫产新生儿AABR听力初筛时间应选择出生后48 h.

Exploration on the Optimal Initial Screen Time in Newborns with Different Modles ofDelivery Using AABR

Objective To explore optimal initial the best screening time for newborns with different delivery methods using AABR.Methods A total of 550 newborns who were born from August 1, 2016 to October 31, 2016 at our hospital participated in the study.AABR was used to accomplish the initial hearing screening.The newborns were divided into 2 groups according to the delivery methods.There were each 100 neonates born in vaginal during <24 h, 24~48 h and 48~72 h after birth, respectively.The numbers of neonates delivered by cesarean section during the 3 separate periods were 50, 100 and 100, respectively.The newborns who failed the preliminary hearing screening proceeded to the re-screening and diagnostic procedures.Results There were 300 newborns were born in vaginal, and the pass rate in 24~48 h after birth group was significantly higher than that in 24 h group (93.00% vs 83.00%,x2=4.735,P=0.03<0.05), but it was not significantly different from that of 48~72 h group (95.00% vs 93.00%,x2=0.355,P=0.56>0.05).There were 250 newborns in cesarean section, the pass rate of 24~48 h after birth group was significantly higher than that in 24 h group (83.00% vs 68.00%,x2=4.437, P=0.04<0.05), and significantly lower than that of 48~72 h group (94.00% vs 83.00%,x2=5.944, P=0.02<0.05).Conclusion Taking into account of hospitalization time, the screening time for the vaginal delivery newborn hearing screening can be advanced to 24~48 h after birth with the application of AABR, but not for the cesarean section group.