Standardization of reference values in short-latency auditory evoked potentials in people over 18 months of age

Background: Brain stem auditory evoked potentials or short-latency auditory evoked potentials (SLAPP) are the neurophysiological test where bioelectrical responses elicited in the auditory system are obtained from the cochlear nerve to the brain stem following the presentation of a transient acoustic stimulus (click or CE-chirp). Objective: The objective of the study is to standardize reference values of SLAPP in people over 18 months of age using the eclipse equipment from the Hospital General de Mexico (HGM) for adequate interpretation for clinical diagnostic purposes and as a control group for future research. Material and methods: A cross-sectional and descriptive study was carried out. Standardization of reference values in short-latency auditory evoked potentials. 34 ears were evaluated from people aged ≥18 months and ≤ 55 years, both genders, who attended the HGM during the period March-June 2024 who agreed to participate, verifying normal hearing. Results: Based on the Gaussian probabilistic model, ± 2 standard deviations were used in relation to the mean absolute latencies, interlatency intervals, total I-V conduction time, wave V threshold, interaural difference, and wave I/V ratio. Conclusion: We suggest that the values found can be taken as a reference of normality for studies of SLAPP, when using stimulation rates 45.1, 33.1, and 11.1 stimuli per second with click-type stimulation and CE-chirp in polarity condensation, rarefaction, and alternate, with the eclipse brand interacoustics equipment, since the ranges represent 95.45% of the population of our sample with normal hearing.