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J Neurol Surg B Skull Base 2022; 83(S 02): e336-e342
DOI: 10.1055/s-0041-1729178
Original Article

Effect of Microvascular Decompression of the Vagus Root Entry/Exit Zone on Blood Pressure in Patients with Hemifacial Spasm Associated with Essential Hypertension: A Retrospective Clinical Analysis

Xuefeng Wei
1   Department of Neurosurgery, Ningxia Medical University, Yinchuan, China
,
Jiao Wang
2   Blood Purification Center, Wuxi No. 2 People's Hospital, Wuxi, China
,
Xuerui Kong
1   Department of Neurosurgery, Ningxia Medical University, Yinchuan, China
,
Caibin Gao
3   Department of Neurosurgery, General Hospital of Ning Xia Medical University, Yinchuan, China
,
Feng Wang
3   Department of Neurosurgery, General Hospital of Ning Xia Medical University, Yinchuan, China
4   Ningxia Key Laboratory of Cerebrocranial Diseases, Yinchuan, China
› Author Affiliations Funding This study was funded by the key research and development program of Ningxia [Grant No. 2018BFG02007].
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Abstract

Background This study aimed to evaluate blood pressure alterations after microvascular decompression (MVD) surgery in patients with hemifacial spasm (HFS) with coexisting hypertension (HTN).

Methods A total of 56 patients with HFS with concurrent HTN who underwent MVD surgery in our center between 2015 and 2019 were retrospectively analyzed. Patients were divided into control and experimental groups: patients who received MVD treatment for only the facial nerve and those who received MVD for the affected facial nerve, ipsilateral vagus nerve, and adjacent ventrolateral medulla, respectively. Preoperative (3 days) and postoperative (7 days and 6 months) blood pressure measurements were analyzed.

Results No statistically significant differences were observed in gender, age, HFS course, HTN course, HTN grade, and preoperative blood pressure between the two groups. No significant difference was observed between pre- and postoperative blood pressure in the control group. In the experimental group, systolic blood pressure significantly differed between 3 preoperative days and 7 postoperative days (p < 0.05), as did diastolic blood pressure (p < 0.05). Measurement at 6 postoperative months also showed significant differences for both systolic blood pressure and diastolic blood pressure compared with that at 3 preoperative days (p < 0.05). HTN grade according to the World Health Organization classification criteria significantly differed between preoperative and postoperative measurements (p < 0.05).

Conclusion Vascular decompression of the ipsilateral vagus nerve roots may improve blood pressure management in patients with HFS with coexisting HTN who undergo MVD. Laterality of involvement (left vs. right) did not significantly differ.

Keywords

hemifacial spasm - microvascular decompression - vagus nerve root - hypertension


Publication History

Received: 05 December 2020

Accepted: 27 February 2021

Article published online:
23 May 2021

© 2021. Thieme. All rights reserved.

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany

 

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