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P.022 Hemifacial Spasm due to dolichoectatic vertebrobasilar artery compression

  • CM Honey (a1), A Almojuela (a1), M Hasen (a1) and AM Kaufmann (a1)

Abstract

Background: Hemifacial Spasm (HFS) is rarely caused by a dolichoectatic vertebrobasilar artery (eVB) compression of the Facial Nerve. This can pose a surgical challenge when performing microvascular decompression as vessel mobilization is often difficult due to atherosclerosis, tethering from brainstem perforators, and large size. These patients are often not considered for surgery. Methods: A retrospective chart review of patients who were surgically treated by the senior author between 2003 and 2017 with an admitting diagnosis of HFS was performed. Patients with preoperative neuroimaging demonstrating eVB compression of their facial nerve/root were included. Results: During the 15-year review, 315 patients underwent microvascular decompression for HFS and 21 (6.7%) had dolichoectactic vertebrobasilar compressions. At final followup (>3 months) 19 patients (90.4%) experienced reduction in symptoms with 15 (71.4%) having complete resolution. One patient required re-operation and benefitted from subsequent symptom relief. The majority of culprit compression was found proximally on the pontine surface. Mobilization of the culprit vessel was achieved successfully in the majority of cases with Teflon pledgets. There were no perioperative strokes or death. Complications are presented Conclusions: Microvascular Decompression for Hemifacial Spasm caused by dolichoectatic vertebrobasilar artery compression can be performed with a high rate of safety and success in the setting of a high case volume centre.

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P.022 Hemifacial Spasm due to dolichoectatic vertebrobasilar artery compression

  • CM Honey (a1), A Almojuela (a1), M Hasen (a1) and AM Kaufmann (a1)

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