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KMID : 0615720080250020189
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Jouranl of Korean Acupuncture and Moxibustion society
2008 Volume.25 No. 2 p.189 ~ p.197
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A Study of Correlation between Electromyography(EMG) and the Heart Rate Variability(HRV) Test, and Their Role as Predicting Factors for Peripheral Facial Palsy Prognosis
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Kim Chan-Young
Lee Sang-Hoon
Park Dong-Suk
Koh Hyung-Kyun
Kim Jong-In
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Abstract
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Objectives : This study was performed in order to investigate the effectiveness of electromyography and the Heart Rate Variability(HRV) test as prognosis factors, and to clarify correlation between Electromyography and the Heart Rate Variability test.
Methods : 44 Bell’s palsy patients who were graded V on the House-Brackmann scale and underwent HRV and EMG testing were retrospectively reviewed based on medical records. Results from both tests were analyzed via simple linear regression, and bivariate correlation analysis was performed to investigate the correlation between results from the two tests. The severity of the facial palsy at onset and at 2 weeks after treatment were evaluated with the H-B grade and Yanagihara grading system, and was converted into improvement scores.
Results : Mean axonal loss according to electromyography showed a statistically significant correlation in predicting peripheral facial palsy improvement(p<0.01). HR, SDNN, TP, LF, HF, VLF, and LF/HF ratio on the Heart Rate Variability test showed no significant correlation in predicting peripheral facial palsy improvement. Mean axonal loss determined by electromyography, and HR, SDNN, TP, LF, HF, VLF, and LF/HF ratio recorded with the Heart Rate Variability test was analyzed with the bivariate correlation analysis method. Mean axonal loss and SDNN showed a statistically significant correlation(p<0.01)
Conclusions : The Heart Rate Variability test has no statistical significance in predicting peripheral facial palsy improvement. SDNN has a statistically significant correlation with mean axonal loss as determined by electromyography.
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KEYWORD
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Peripheral Facial Palsy, Electromyography, Heart Rate Variability
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