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
SUMMARY
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 exposing the round window ,
electrode dip in DEX and the group doesn't use DEX. Results: The results impedance field
telemetry for the highest impedance at one electrode channel was 22,3 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 72.8; 81.8; 84.8%. The results of auditory nerve
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¹ Trường Đại học Y Hà Nội
² Bệnh viện Đại học Y Hà Nộiresponse 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.
Keywords: Cochlear implant, dexamethasone, impedance field telemetry, auditory nerve response
telemetry
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