Prognostic Factors of Hemifacial Spasm after Microvascular Decompression.
10.3340/jkns.2009.45.6.336
- Author:
Hong Rae KIM
1
;
Deok Joo RHEE
;
Doo Sik KONG
;
Kwan PARK
Author Information
1. Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea. kwanpark@skku.edu
- Publication Type:Original Article
- Keywords:
Hemifacial spasm;
Microvascular decompression;
Prognosis;
Chronology
- MeSH:
Follow-Up Studies;
Hemifacial Spasm;
Humans;
Logistic Models;
Microvascular Decompression Surgery;
Multivariate Analysis;
Prognosis;
Prospective Studies
- From:Journal of Korean Neurosurgical Society
2009;45(6):336-340
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE: The factors that influence the prognosis of patients with hemifacial spasm (HFS) treated by microvascular decompression (MVD) have not been definitely established. We report a prospective study evaluating the prognostic factors in patients undergoing MVD for HFS. METHODS: From January 2004 to September 2006, the authors prospectively studied a series of 293 patients who underwent MVD for HFS. We prospectively analyzed a number of variables in order to evaluate the predictive value of independent variables for the prognosis of patients undergoing MVD. The patients were followed-up at regular intervals and divided into as cured and unsatisfactory groups based on symptom relief. Uni- and multivariate analyses were performed using logistic regression models. RESULTS: A total 273 of 293 (94.2%) patients achieved symptom relief within one year after the operation. Intraoperatively, the indentation of the root exit zone was observed in 259 (88.5%) patients. Uni- and multivariate analyses revealed that the symptoms at postoperative 3 months (p<0.001) and indentation of the root exit zone (p=0.036) were associated with good outcomes. CONCLUSION: The intraoperative finding of root exit zone indentation will help physicians determine the prognosis in patients with HFS. To predict the prognosis of HFS, a regular follow-up period of at least 3 months following MVD should be required.
