Audiovestibular Results after Surgery for Cerebellopontine Angle Meningiomas
作者:
Philip Grey,
David Baguley,
David Moffat,
David Hardy,
Graham Beynon,
期刊:
The American Journal of Otology
(OVID Available online 1996)
卷期:
Volume 17,
issue 4
页码: 634-638
ISSN:0192-9763
年代: 1996
出版商: OVID
关键词: Cerebellopontine angle;Meningioma Surgery;Audiovestibular results;Cerebellopontine angle tumors
数据来源: OVID
摘要:
Meningiomas are the second most common cerebellopontine angle (CPA) tumor. The reported rates of hearing preservation following surgical removal vary between 32% and 100%. There is only one recent report discussing vestibular function after CPA meningioma removal. In this series of 31 patients with CPA meningiomas, 16 patients had their tumors removed via the retrosigmoid approach. All 16 had audiovestibular assessment pre- and postsurgery and were the subjects of this study. Class A hearing is socially useful hearing and is defined as a pure tone average (PTA; average of 500 Hz and 1, 2 and 4 kHz) of <30 dB and speech descrimination scores (SDS) of >70%. Class B hearing is serviceable hearing, defined as PTA of <50 dB and SDS of >50%. Nine patients had class A hearing, and two had class B hearing presurgery. Socially useful hearing was preserved in six of nine (67%) patients in whom it was present before surgery, and serviceable or better hearing was preserved in eight of 11 (73%). Vestibular symptomatology and examination findings improved despite a decrease in the number of patients with intact caloric function postsurgery. Patients who retained vestibular function on caloric testing were symptomatically better than those who lost caloric function. These results confirm that excellent audiovestibular function is possible after CPA meningioma surgery.
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