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作者对早产儿(SGA,850±258g,28.9±3.3孕周, n=15)以及接受正常孕周的早产儿(AGA,1 014±231g,26.9±1.9孕周,n=20)以及健康足月儿(n=22) 进行了一项非典型听觉诱发电位的检查。采用500Hz的单球和谐曲调作为标准刺激,用750Hz的曲调作为偏离刺激。早产儿在40孕周、生后6个月、12个月的校正年龄接受检测,而对照组在生后2-4 d、3个月、6个月、9 个月、12个月及15个月接受检测。有意义的波峰包括阳性主波峰(P350),在250 ms(N250)和650 ms(Nc)时的两个负相波峰,以及在位于200 ms时的不相称的负相波(MMN)。到足月时,早产儿的P350值与对照组新生儿的P350值相似。与偏离刺激相对应,SGA组的Nc
The authors evaluated preterm infants (SGA, 850 ± 258 g, 28.9 ± 3.3 gestational weeks, n = 15) and preterm infants undergoing normal gestational weeks (AGA, 1 014 ± 231 g, 26.9 ± 1.9 gestational weeks, n = 20) Months (n = 22) underwent an atypical auditory evoked potential test. A 500Hz single ball harmony tune is used as a standard stimulus and a 750Hz tune is used as a deviation stimulus. Preterm infants in 40 weeks of gestation, 6 months after birth, 12 months of correctional age to be tested, while the control group 2-4 days after birth, 3 months, 6 months, 9 months, 12 months and 15 Month to be tested. The interesting peaks include the positive main peak (P350), two negative phase peaks at 250 ms (N250) and 650 ms (Nc), and the disproportionate negative phase wave (MMN) at 200 ms. At full-term, P350 in preterm infants was similar to P350 in neonates in the control group. Corresponding to the deviation stimulus, Nc of SGA group