VAI TRÒ CỦA DEXAMETHASONE TRONG BỘC LỘ CỬA SỔ TRÒN CẤY ĐIỆN CỰC ỐC TAI ĐỐI VỚI TRỞ KHÁNG IFT VÀ ĐÁP ỨNG THẦN KINH ART

Abstract

Objective: Evaluation of the role of Dexamethasone (DEX) in exposing the round window in cochlear implant surgery on  impedance field telemetry (IFT) and auditory nerve response telemetry (ART). Methods: prospective intervention research on 33 patients having operated cochlear from 8/2020 to 8/2021 and was divided into 3 groups: pump DEX during  exposingthe round window, electrode dip in DEX and the group doesn't use DEX. Results: The resultsimpedance field telemetry for the highest impedance at one electrode channel was 22,4(kΩ), the lowest was 1,21 (kΩ),the average value at all channels was 4,22(kΩ). The average impedance measured at the apical, middle, and basal electrode channels all achieved good results (<5kΩ), the lowest average impedance was measured at the dip DEX  group with a value of 3.97 ± 0.88 ( kΩ), followed by the pump DEX group with a value of 4.27 ± 1.41 (kΩ), the highest was the group without DEX with a result of 4.48 ± 1.28 (kΩ), however the difference between the groups was not statistically significant with p> 0,05. The results of auditory nerve response telemetry (ART): the good response rate at the apical, middle, and basal  electrode groups was 72,7; 81,8 and 84.8%. The results of auditory nerve response telemetry (ART) at the  groups: pump DEX, electrode dip DEX and no DEX, the difference was not statistically significant with p> 0,05. Conclusion: the role of Dexamethasone (DEX) in exposing the round window in cochlear implant surgery on  impedance field telemetry (IFT) and auditory nerve response telemetry (ART) was not statistically different from the control group.