01928caa a2200241 4500 210629s9999 xx 000 0 und d 1809-4864 Prashanth Prabhu Effect of Blood Group on Ultrahigh Frequency Auditory Sensitivity 2018 Department of Audiology, All India Institute of Speech and Hearing, Naimisham Campus Manasagangothri, Mysore, Karnataka, India prashanth.audio@gmail.com 364–367 Volume 22 Issue 4 Introduction: Individuals with blood group O are reported to have reduced otoacoustic emissions (OAEs) compared with individuals with different blood groups.Objective:The present study attempted to determine if the blood group has any effect on high-frequency auditory sensitivity using ultrahigh-frequency audiometry and ultrahigh-frequency distortion product otoacoustic emissions (DPOAEs).Methods:High-frequency thresholds and high-frequency DPOAEs were measured in 60 individuals with normal hearing and different blood groups.Results:The results of the study showed that there was a significant reduction in DPOAE amplitude for individuals with blood group O compared with individuals with other blood groups. However, there was no significant difference in ultrahigh-frequency thresholds across the blood groups.Conclusion:This reduction in OAE amplitude may be attributed to a lower number of healthy outer hair cells in individuals with blood group O. Further studies on larger groups of individuals are essential for a better generalization of the results. noise-induced hearing loss; ABO blood group system; audiometry Akhila Chandrashekhar Janani Cariappa Nayanika Ghosh International archives of otorhinolaryngology https://doi.org/10.1055/s-0037-1613711 FJAS FJAS 17827 17827