Chauhan Indrajeet, Swami Himanshu, Natraj Rashmi
Graded Specialist (ENT), Military Hospital, Yol Cantt, Himachal Pradesh, India.
HoD & Senior Advisor (ENT), Army Hospital (R&R), Delhi Cantt, India.
Med J Armed Forces India. 2021 Apr;77(2):224-229. doi: 10.1016/j.mjafi.2020.10.011. Epub 2020 Dec 29.
Our study was a prospective, non-randomised, single tertiary care centre study involving 50 children below 10 years, all implanted with Nucleus 24™ cochlear implants to find the relationship between intra-operative NRT (Neural Response Telemetry) values and post-operatively behaviourally obtained Threshold (T) and Comfort (C) levels.
NRT threshold values were obtained intra-operatively by using Custom Sound EP Software V 4.4™ (Cochlear Corporation). At switch-on after three weeks, behavioural T and C levels were measured based on behavioural responses given by patients using Custom Sound Version 4.4 software™ (Cochlear Corporation). NRT values were also measured at switch-on, 2 months, 3 months and 6 months.
Intra-operative NRT levels (187.96 ± 12.48) were higher than both T (160.63 ± 22.69) and C (181.21 ± 22.41) levels obtained after 3 weeks. In addition, there was a weak correlation of NRT values with T ( value: 0.05, = 0.391) and C ( value: 0.05, = 0.390) levels.
NRT is a quick and non-invasive tool to confirm cochlear implant integrity. There is a weak correlation of NRT values with both T and C levels and therefore, intra-operative NRT is a weak predictor for setting both T and C levels at switch-on.
我们的研究是一项前瞻性、非随机、单中心三级护理中心研究，涉及50名10岁以下儿童，均植入了Nucleus 24™人工耳蜗，以探究术中神经反应遥测（NRT）值与术后行为学获得的阈值（T）和舒适阈（C）水平之间的关系。
术中使用Custom Sound EP Software V 4.4™（科利耳公司）获取NRT阈值。术后三周开机时，根据患者使用Custom Sound Version 4.4软件™（科利耳公司）给出的行为反应测量行为学T和C水平。开机时、2个月、3个月和6个月时也测量NRT值。
术中NRT水平（187.96 ± 12.48）高于术后三周获得的T水平（160.63 ± 22.6）和C水平（181.21 ± 22.41）。此外，NRT值与T水平（相关系数：0.05，P = 0.391）和C水平（相关系数：0.05，P = 0.390）的相关性较弱。
NRT是一种快速且无创的工具，可用于确认人工耳蜗的完整性。NRT值与T和C水平的相关性较弱，因此术中NRT对于开机时设定T和C水平是一个较弱的预测指标。
