• Turk J Med Sci · Dec 2019

    Evaluation of medial olivocochlear efferent system and hearing loss in patients with primary Sjögren’s syndrome

    • Bülent Gündüz, Nuriye Yildirim, Serdar Can Güven, Emre Orhan, Recep Karamert, and Zafer Günendi.
    • Turk J Med Sci. 2019 Dec 16; 49 (6): 1647-1654.

    Background/AimAutoimmune diseases are a remarkable issue for researchers due to their adverse effects on the auditory system, but for primary Sjögren’s syndrome (pSS) there is little research on the comprehensive audiological findings in literature. The main objective of this study was to investigate the medial olivocochlear efferent functions of subjects with pSS and to examine the audiological findings.Materials And MethodsThe study included 36 subjects with pSS and 36 healthy subjects. All the subjects underwent testing including pure tone, speech, and high frequency audiometry; tympanometry and acoustic reflexes; distortion product otoacoustic emissions (DPOAE); and suppression of DPOAE.ResultsThe hearing thresholds of the pSS group were higher than those of the control at all frequencies (P < 0.001). Minimal to mild sensorineural hearing loss was observed in 52.77% of all the subjects with pSS. Additionally, all of the subjects had type A curve tympanograms, but the static compliances of the pSS group were lower and the acoustic reflex thresholds were higher than in the control (P < 0.001). In suppression levels of DPOAE, no statistically significant difference was found between the groups (P > 0.05).ConclusionThe study indicates that because of obtaining normal suppression levels in DPOAE, the medial olivocochlear efferent system is functional in pSS. However, there is a need for more tests, including auditory brainstem response, to evaluate the afferent auditory system in pSS.This work is licensed under a Creative Commons Attribution 4.0 International License.

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