oVEMP as an objective indicator of successful repositioning maneuver

• Published in: Acta otorrinolaringológica española 2018-05, Vol.69 (3), p.141-148
• Main Authors: Asal, Samir, Sobhy, Osama, Balbaa, Amany
• Format: Article
• Language: English
• Subjects: Benign paroxysmal positioning vertigo; Maniobras de reposicionamiento; Ocular vestibular evoked myogenic potential; Otolaryngology; Potencial miogénico evocado vestibular ocular; Repositioning maneuvers; Vértigo posicional paroxístico benigno
• ISSN: 0001-6519; 2173-5735
• DOI: 10.1016/j.otorri.2017.06.004

Abstract Background and objective Benign paroxysmal positioning vertigo (BPPV) is the most common peripheral vestibular disorder. Canalolithiasis in the posterior semi-circular canal is the most common underlying pathology that can be treated effectively by repositioning maneuvers. Our hypothesis suggested that successful maneuvers can lead to repositioning of dislodged otoconia to the utricle. Materials and methods Air conducted oVEMP, which is thought to originate from the contra-lateral utricular organ was measured in twenty patients with unilateral BPPV and we compared n1–p1 peak to peak amplitude of the affected ears in 3 separate intervals: on pre-treatment when typical nystagmus was confirmed, immediately after, and 1 week after repositioning maneuvers to assess change, if any, in amplitude. Results This study showed significant increase of oVEMP amplitude in the affected ears after successful repositioning maneuver that was more significant after 1 week. Conclusions oVEMP can be used as a reliable objective test for ensuring a successful maneuver rather than subjective dependence on the patient's symptoms, which may be misleading due to a remission.