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Updated: Jan 30, 2026
Electrically Evoked Stapedius Reflex Measurements in Cochlear Implantation and Its Application in the Postoperative Fitting Process
Published on: June 21, 2024
Video head impulse test relevance in the early postoperative period after cochlear implantation
Roseli Saraiva Moreira Bittar1, Eduardo Sato1, Douglas Josimo Silva Ribeiro1
1a Department of Otolaryngology , University of Medicine , Sao Paulo , Brazil.
Background:
Cochlear implantation (CI) is the gold standard therapy for profound or severe sensorineural hearing loss. It is a safe surgical procedure but, because of the proximity of the cochlea and vestibule, postoperative vestibular disorder may occur. Our hypothesis is that the video head impulse test (vHIT) may be a good tool to achieve a topographic diagnosis of dizziness in the early postoperative period after CI.
Aims/Objectives:
To evaluate patients with instability, imbalance and vertigo between 7 and 14 days after CI procedure.
Material And Methods:
A total of 31patients scheduled for unilateral CI were included in this study. vHIT for horizontal semicircular canal was performed before CI and between days 7 to 14 after the surgery.
Results:
Six subjects had dizziness complaints after CI: instability (N = 2), imbalance (N = 2) and vertigo (N = 2). The postoperative vHIT test turned abnormal only in subjects with vertigo as compared to the preoperative vHIT test results.
Conclusion And Significance:
vHIT is a good vestibular function test during the first 2 weeks after CI surgery when vertigo is the main complaint.
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