Electronystagmography in 166 patients with acoustic neuroma before and after surgery

To analyze the preoperative patterns of caloric test, eye tracking test (ETT), and optokinetic pattern (OKP) in patients with acoustic neuroma (AN) and compare them with the postoperative patterns of ETT and OKP results A total of 166 patients with AN (102 women; mean age: 41 years, range: 11–79 yea...

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Bibliographic Details
Published in:Auris, nasus, larynx nasus, larynx, 2022-08, Vol.49 (4), p.571-576
Main Authors: Itani, Shigeto, Otsuka, Koji, Ogawa, Yasuo, Inagaki, Taro, Nagai, Noriko, Konomi, Ujimoto, Kohno, Michihiro, Tsukahara, Kiyoaki
Format: Article
Language:English
Subjects:
Acoustic neuroma
Adolescent
Adult
Aged
Caloric test
Caloric Tests
Child
Electronystagmography
Eye tracking test
Female
Humans
Middle Aged
Neuroma, Acoustic - diagnostic imaging
Neuroma, Acoustic - pathology
Neuroma, Acoustic - surgery
Optokinetic pattern
Postoperative Period
Vestibular schwannoma
Young Adult
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Summary:To analyze the preoperative patterns of caloric test, eye tracking test (ETT), and optokinetic pattern (OKP) in patients with acoustic neuroma (AN) and compare them with the postoperative patterns of ETT and OKP results A total of 166 patients with AN (102 women; mean age: 41 years, range: 11–79 years) who were being treated at our hospital between 2013 and 2016 were enrolled. Preoperatively, a detailed history was taken regarding the presence of subjective symptoms of equilibrium dysfunction, and the patients underwent caloric test, ETT, and OKP. They were classified into three groups based on the preoperative ETT and OKP results as follows: Group A, normal ETT and OKP; Group B, either ETT or OKP was abnormal; and Group C, both ETT and OKP were abnormal. All patients were evaluated for subjective symptoms of vestibular dysfunction and were also grouped based on the tumor size on imaging. All surgeries were performed by a neurosurgeon using the lateral suboccipital retrosigmoid approach. About one month later after surgery, postoperatively ETT was performed on 150 patients and OKP was performed on 148 patients. The preoperative and postoperative ETT and OKP results were compared. The same two specialists analyzed the postoperative ETT and OKP findings as improved, unchanged, or worse. Student t-test was used for statistical analysis and a P-value of
ISSN:0385-8146
1879-1476
DOI:10.1016/j.anl.2021.10.010