Yen-Pin Wang1, Yi-Ho Young. 1. Department of Otolaryngology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.
Abstract
OBJECTIVE: To investigate the effect of chronic noise exposure on vestibular-evoked myogenic potentials. STUDY DESIGN: Prospective study. SUBJECTS AND METHODS: Twenty patients with chronic noise-induced hearing loss, presenting as bilateral notched audiogram at 4 kHz, underwent audiometry, caloric, and vestibular-evoked myogenic potential tests. RESULTS: Caloric and vestibular-evoked myogenic potential tests revealed abnormal responses in nine (45%) and 10 (50%) patients, respectively. However, when both results were considered together, the abnormal rate reached 70% (14 of 20). The hearing threshold of 4 kHz significantly associated with vestibular-evoked myogenic potential results (ie, vestibular-evoked myogenic potential was abnormal in patients with greater degrees of hearing loss), but not with caloric responses. CONCLUSION: Patients with bilateral 4-kHz notched audiogram and hearing threshold of 4 kHz > 40 dB may show abnormal (absent or delayed) vestibular-evoked myogenic potentials, indicating that the vestibular part, especially the sacculocollic reflex pathway, has also been damaged.
OBJECTIVE: To investigate the effect of chronic noise exposure on vestibular-evoked myogenic potentials. STUDY DESIGN: Prospective study. SUBJECTS AND METHODS: Twenty patients with chronic noise-induced hearing loss, presenting as bilateral notched audiogram at 4 kHz, underwent audiometry, caloric, and vestibular-evoked myogenic potential tests. RESULTS: Caloric and vestibular-evoked myogenic potential tests revealed abnormal responses in nine (45%) and 10 (50%) patients, respectively. However, when both results were considered together, the abnormal rate reached 70% (14 of 20). The hearing threshold of 4 kHz significantly associated with vestibular-evoked myogenic potential results (ie, vestibular-evoked myogenic potential was abnormal in patients with greater degrees of hearing loss), but not with caloric responses. CONCLUSION:Patients with bilateral 4-kHz notched audiogram and hearing threshold of 4 kHz > 40 dB may show abnormal (absent or delayed) vestibular-evoked myogenic potentials, indicating that the vestibular part, especially the sacculocollic reflex pathway, has also been damaged.
Authors: Maria Geraldine Zuniga; Roni E Dinkes; Marcela Davalos-Bichara; John P Carey; Michael C Schubert; W Michael King; Jeremy Walston; Yuri Agrawal Journal: Otol Neurotol Date: 2012-12 Impact factor: 2.311
Authors: P Viola; A Scarpa; D Pisani; C Petrolo; T Aragona; L Spadera; P De Luca; F M Gioacchini; M Ralli; E Cassandro; C Cassandro; G Chiarella Journal: Transl Med UniSa Date: 2020-05-31