Effect of Isoflurane on the Hearing in Mice.
- Author:
Joung Uk KIM
1
;
Yun Suk AHN
;
Jin Kyung SUH
;
Jong Woo CHUNG
Author Information
- Publication Type:Original Article
- Keywords: Hearing; Anesthetics; Central nervous system; Efferent control
- MeSH: Anesthetics; Anesthetics, Inhalation; Animals; Central Nervous System; Evoked Potentials, Auditory, Brain Stem; Hearing; Hearing Loss; Isoflurane; Ketamine; Mice; Oxygen; Xylazine
- From:Korean Journal of Audiology 2012;16(1):14-17
- CountryRepublic of Korea
- Language:English
- Abstract: BACKGROUND AND OBJECTIVES: The aim of this study was to investigate the relationship between inhalation anesthetics and hearing in mice. MATERIALS AND METHODS: As inhalation anesthetics, isoflurane was used. Auditory brainstem response and distortion product otoacoustic emission were used as measurement of hearing. Mice were divided into 2 groups. 'Isoflurane group' consisted of mice that were anesthetized with an inspired concentration of 2.0 vol% isoflurane with 2 L/min of oxygen (n=10). 'Control group' consisted of mice that were anesthetized with ketamine and xylazine (n=10). RESULTS: Auditory brainstem response thresholds in mice anesthetized with ketamine and xylazine was not different from those in mice anesthetized with isoflurane. Threshold of DPOAE was higher in mice with isolurane than with ketamine and xylazine. Changes of efferent control may be induced by isoflurane and consequently change the threshold of DPOAE in mice. CONCLUSIONS: These results infer that, there was a change of central nervous system induced by inhalation anesthetics, this change also can be applied to the strategies for prevention of hearing loss.
