Emara A A
Audiology Unit, ENT Department, Tanta University, Tanta, Egypt.
J Laryngol Otol. 2010 Feb;124(2):141-6. doi: 10.1017/S0022215109991447. Epub 2009 Oct 20.
The auditory brainstem response consists of fast and slow waves. The acoustically evoked, short latency negative response is a large, negative deflection with a latency of 3 milliseconds which has been reported in patients with profound hearing loss. It may be of vestibular, particularly saccular, origin, as is the vestibular evoked myogenic potential.
To assess the presence of acoustically evoked, short latency negative responses in children with severe to profound sensorineural hearing loss.
Twenty-three children (46 ears) with sensorineural hearing loss underwent audiological evaluation and auditory brainstem response, vestibular evoked myogenic potential and caloric testing.
An acoustically evoked, short latency negative response was present in 30.43 per cent of ears and absent in 69.57 per cent. Vestibular evoked myogenic potentials were recorded in all ears in the former group, but in only 53.13 per cent in the latter group. Caloric testing was normal in 82.6 per cent of the total ears tested.
The presence of an acoustically evoked, short latency negative response is dependent not on residual hearing but on normal saccular function. This response can be measured in patients who cannot contract their neck muscles.
听性脑干反应由快波和慢波组成。听觉诱发的短潜伏期负反应是一种大的负向偏转，潜伏期为3毫秒，已在重度听力损失患者中报道。它可能起源于前庭，尤其是球囊，与前庭诱发肌源性电位一样。
评估重度至极重度感音神经性听力损失儿童中听觉诱发的短潜伏期负反应的存在情况。
23名感音神经性听力损失儿童（46耳）接受了听力学评估、听性脑干反应、前庭诱发肌源性电位和冷热试验。
30.43%的耳存在听觉诱发的短潜伏期负反应，69.57%的耳不存在。在前一组的所有耳中均记录到前庭诱发肌源性电位，而后一组中仅53.13%的耳记录到。在所有测试耳中，82.6%的冷热试验结果正常。
听觉诱发的短潜伏期负反应的存在不取决于残余听力，而是取决于正常的球囊功能。在无法收缩颈部肌肉的患者中也可测量到这种反应。
