Effects of cerebellar retraction on brainstem auditory evoked potentials in an experimental animal model of cerebellopontine angle tumor

Abstract IMPORTANCE Preservation of venous drainage during surgery of the cerebellopontine angle has received little attention. CLINICAL PRESENTATION We describe changes in brainstem auditory evoked potentials after temporary obstruction of the superior petrosal vein during surgical resection of a small meningioma at the petrous apex via a standard suboccipital-lateral approach. Temporary clipping of the petrosal vein resulted in deterioration of the brainstem auditory evoked potentials. The tumor was removed with preservation of the superior petrosal vein. CONCLUSION A transient postoperative cochlear nerve deficit emphasizes the importance of venous drainage and its preservation during surgery for small lesions of the cerebellopontine angle that do not distort normal anatomic structures.

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Axonal injury in auditory nerve observed in reversible latency changes of brainstem auditory evoked potentials (BAEP) during cerebellopontine angle manipulations in rats

Hearing Research ◽

10.1016/s0378-5955(02)00633-0 ◽

2002 ◽

Vol 173 (1-2) ◽

pp. 91-99 ◽

Cited By ~ 11

Author(s):

Tetsuji Sekiya ◽

Norihito Shimamura ◽

Akinori Yagihashi ◽

Shigeharu Suzuki

Keyword(s):

Evoked Potentials ◽

Auditory Nerve ◽

Cerebellopontine Angle ◽

Auditory Evoked Potentials ◽

Axonal Injury ◽

Brainstem Auditory Evoked Potentials

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Intraoperative Changes of Brainstem Auditory Evoked Potentials during the Trigeminocardiac Reflex in Cerebellopontine Angle Surgery

Skull Base ◽

10.1055/s-2007-984135 ◽

2007 ◽

Vol 17 (S 1) ◽

Author(s):

Alireza Gharabaghi ◽

Marcus Andre Acioly ◽

Carlos Henrique Carvalho ◽

Andrei Koerbel ◽

Hubert Löwenheim ◽

...

Keyword(s):

Evoked Potentials ◽

Cerebellopontine Angle ◽

Auditory Evoked Potentials ◽

Brainstem Auditory Evoked Potentials ◽

Trigeminocardiac Reflex

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Brainstem Auditory Evoked Potentials in Patients with Cerebellopontine Angle Tumors

Annals of Otology Rhinology & Laryngology ◽

10.1177/000348948309200622 ◽

1983 ◽

Vol 92 (6) ◽

pp. 645-650 ◽

Cited By ~ 27

Author(s):

Margareta B. Møller ◽

Aage R. Møller

Keyword(s):

Evoked Potentials ◽

Cerebellopontine Angle ◽

Auditory Evoked Potentials ◽

Characteristic Change ◽

Brainstem Auditory Evoked Potentials ◽

Unaffected Side ◽

Cerebellopontine Angle Tumors ◽

Affected Side ◽

Evoked Potentials In Humans

Changes in the brainstem auditory evoked potentials of 27 patients with cerebellopontine angle tumors were analyzed. It was found that the most characteristic change was an increase in the latency of wave III on the affected side. In patients with tumors large enough to cause displacement of the brainstem, there was in addition an increase in the latency of wave III on the unaffected side. These results are consistent with recent observations regarding the neural generators of the brainstem auditory evoked potentials in humans.

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