Department of Communication Sciences and Disorders, 3310 Health Science Bldg-CSDI-MS 668, East Carolina University, Greenville, NC, 27858-4353, USA.
Int J Pediatr Otorhinolaryngol. 2020 Dec;139:110423. doi: 10.1016/j.ijporl.2020.110423. Epub 2020 Oct 4.
The object of this study was to examine if caesarean section delivered neonates have different middle ear function relative to neonates with vaginal delivery.
Auditory brainstem responses (ABRs) were examined in caesarean section delivered (n = 23) and vaginally delivered (n = 29) neonates. ABRs were also evoked with air- and bone-conducted stimuli (i.e., clicks and CE-Chirps) and presented at a screening intensity level (i.e., 30 dB nHL). Wave V latencies and amplitudes were examined as a function of mode of delivery and stimuli.
Statistically significant longer wave V latencies evoked with air-conducted stimuli were seen in caesarean section delivered neonates (p = .042). There was no statistically significant difference in wave V latencies with bone-conducted stimuli among the two groups of neonates (p = .42). There were no significant differences in wave V amplitude between neonates with caesarean section and vaginal delivery for air-conducted (p = .42) stimuli. Wave V amplitudes were not significantly different as a function of mode of delivery with CE-Chirp stimulus (p = .41). Wave V amplitudes were significantly larger for the caesarean section delivered neonates with the bone-conducted click stimulus (p = .036).
The ABR wave V latency disparity with air- and bone-conducted stimuli support the notion that differences in middle ear function exist between the two groups of newborns. It was speculated that delayed fluid resorption in the middle ear exists in neonates with caesarean section delivery compared to those with vaginal delivery.
本研究旨在探讨剖宫产分娩新生儿与阴道分娩新生儿的中耳功能是否存在差异。
对剖宫产分娩（n=23）和阴道分娩（n=29）新生儿进行听性脑干反应（ABR）检查。还使用空气和骨导刺激（即， clicks 和 CE-Chirps）诱发 ABR，并在筛查强度水平（即，30 dB nHL）下呈现。检查了波 V 潜伏期和振幅作为分娩方式和刺激的函数。
与阴道分娩新生儿相比，剖宫产分娩新生儿的空气传导刺激诱发的波 V 潜伏期明显延长（p=0.042）。两组新生儿骨导刺激的波 V 潜伏期无统计学差异（p=0.42）。剖宫产和阴道分娩新生儿的空气传导刺激的波 V 振幅无显著差异（p=0.42）。CE-Chirp 刺激时，波 V 振幅与分娩方式无显著差异（p=0.41）。骨导 click 刺激时，剖宫产分娩新生儿的波 V 振幅明显较大（p=0.036）。
空气和骨导刺激的 ABR 波 V 潜伏期差异支持中耳功能在两组新生儿之间存在差异的观点。推测与阴道分娩新生儿相比，剖宫产分娩新生儿中耳内液体吸收延迟。
