Electrophysiological Vestibular Evaluation in Two Patients with Traumatic Pos Vertigo: A Case Study
Introduction: The TBI can cause focal and/or diffuse lesions involving cortical or stem regions, resulting in diverse types of impairments, especially those related to balance. Vertigo is a common symptom after TBI, due to BPPV, injury of the membranous labyrinth, lesion to VIII nerve, and fracture of labyrinth bone fracture. Evoked auditory potentials enable the evaluation of the integrity of the central auditory pathway, and are able to evaluate peripheral and/or central vestibular pathways.
Objective: To determine if there is correlation between the clinical vestibular test and electrophysiological test findings in patients with posttraumatic vertigo.
Method: This is a descriptive study consisting of two adults complaining of posttraumatic vertigo who underwent electrophysiological evaluation in neurotology and audiology ward of the Federal University of Sergipe.
Results: Subject 1: a diagnosis of BPPV, VNG, and ABR presenting with central vestibular dysfunction indicating retrocochlear lesion low trunk bilaterally. Subject 2: Diagnostic hypothesis not established, VNG and ABR presenting with central vestibular dysfunction amendment indicating retrocochlear down trunk bilaterally.
Conclusion: In conclusion, after the results, the diagnosis of Subject 1, although not ruled out, was not the only mechanism of vertigo after trauma, since the presence of a central lesion associated it was found by modifying therapeutic planning. Regarding Subject 2, the findings indicated a diagnosis of central lesion that subsequently searched, revealed characteristic episode previously suffered TBI.