| 강직성 마비 환자에서의 H반사의 진동 억제 지수, H/M비 그리고,F/M비의 변화에 대한 연구 |
| 홍승봉, 김승현, 나덕렬, 이광우, 노재규, 이상복, 명호진 |
| 서울대학교 신경과. |
| Vibratory Inhibition Index of H Reflex, H/M and F/M Ratios in Patients with Spastic Weakness |
| Seung Bong Hong, M.D., Seung Hyun Kim, M.D., Duk Lyul Na*, M.D., Kwang Woo Lee, M.D., Jae Kyu Roh, M.D., Sang Bok Lee, M.D.,
Ho-Jin Myung, M.D. |
| Department of Neurology, College of Medicine, Seoul National University |
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| Abstract |
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The vibratory inhibition index(V.I.I.) of H-reflex, H/M(mean H-reflex amplitude / mean M wave amplitude) and F/M(mean F wave amplitude / mean M wave amplitude) ratios were measured in patients of hyperreflexia with or without spasticity. These data were compared with age-matched control subjects. In comparison to normals, V.I.I. And F/M ratios were increased at statistically significant levels(versus normal : V.I.I. P<0.001, F/M p<0.005) in patient group. And V.I.I.'s were inclined to be correlated with F/M ratios without statistical significance(r=0.27, p=0.21). H /M ratios showed no significant difference between patient and control groups. In these patients, the normal significant correlation between mean F wave amplitude and M wave amplitudes was maintained(p<0.01). F/M ratios were negatively correlated with rnotor nerve conductoion velocity(r= -0.72, p<0.01).These results indicate that V.I.I. And F/M ratios increase in patients with hyperreflexia and/or spasticity. Although mechanisms differ, the data are consistent with a similar physiological responses of H-reflex and F wave to spasticity. |
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