Auditory Brainstem Responses in Senile Presbycusis Patients over 90 years

To analyze the characteristics of auditory brainstem response (ABR) in presbycusis patients elder than 90 years. Fourteen presbycusis patients elder than 90 years (presbycusis group, 91.1.4 ± 1.3 years, 26 ears) and 9 normal-hearing young adults (control group, 22.7±1.2 years, 18 ears) participated in the study. Alternative click-evoked ABRs were recorded in both groups. The peak latency (PL) of peak I, III, and V, and the inter-peak latency (IPI) of I-III, III-V, and I-V were compared between groups. In elder presbycusis patients, the occurrence rate of peak I and III were both 76.9%, and that of peak V was 84.6%. In presbycusis group, the peak latencies of I, III, V were significantly longer than that of control group (P<0.001). There was no significant difference between groups in the IPI of peak I-I III (P=0.298, peak III-V (P=0.254) and peak I-V (P=0.364). Auditory brainstem responses in presbycusis patients elder than 90 years showed worse wave differentiation