EVALUATION OF POSTERIOR TIBIAL H/M RATIO IN CEREBROVASCULAR ACCIDENTS

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EBRAHIMI HOSSEIN ALI; ADIBEYG S.

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Journal: CURRENT JOURNAL OF NEUROLOGY Year:2008 | Volume:7 | Issue:23 Page(s): 266-271

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Information Journal Paper

Title

EVALUATION OF POSTERIOR TIBIAL H/M RATIO IN CEREBROVASCULAR ACCIDENTS

Author(s)

EBRAHIMI HOSSEIN ALI | ADIBEYG S. | Issue Writer Certificate

Keywords

H/M RATIOQ1

POSTERIOR TIBIAL NERVEQ1

H REFLEXQ1

CVAQ2

SOLEUSQ1

CEREBROVASCULAR ACCIDENTSQ1

ISCHEMICQ1

HEMORRHAGEQ1

BABINSKY SIGN’SQ1

Abstract

Introduction: Clinical use of the late responses during routine neurophysiological examination has significantly increased the diagnostic yield of the neurophysiological evaluation. The H max to M max ratio (H/M ratio) is considered a suitable index for illustrating the level of reflex excitability of the motor pool.Methods: In this study posterior tibial nerve H/M ratio changes in cerebrovascular accidents (CVA) evaluated. This investigation was carried out in 22 normal subjects aged 40-65 years with mean 52 years, and in 40 patients with CVA aged 42-63 years with mean 57 years.Results: In normal subjects no significant differences were found between the mean values observed between right and left sides. In patients significant increased H/M ratios in both sides with more in non-plegic leg (P<0.01) were found. The facilitation of Babinsky sign in patients is significantly associated with low H/M ratios (P=0.003). The H/M ratio changes were not significantly associated with severity of hemiplegia (P=0.3 for lower extremities, P=0.9 for upper extremities). The H/M ratio was increased in ischemic lesions (P<0.01), but in intracerebral hemorrhages the soleus H/M ratio increases in non-plegic side the same as the plegic side.Conclusion: The posterior tibial nerve H/M ratios are increased in CVA bilaterally due to decreased presynaptic inhibition Ia terminals, thus amplitude of H reflexes increased without increased amplitude of M response.

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APA: Copy

EBRAHIMI, HOSSEIN ALI, & ADIBEYG, S.. (2008). EVALUATION OF POSTERIOR TIBIAL H/M RATIO IN CEREBROVASCULAR ACCIDENTS. CURRENT JOURNAL OF NEUROLOGY (IRANIAN JOURNAL OF NEUROLOGY), 7(23), 266-271. SID. https://sid.ir/paper/102790/en

Vancouver: Copy

EBRAHIMI HOSSEIN ALI, ADIBEYG S.. EVALUATION OF POSTERIOR TIBIAL H/M RATIO IN CEREBROVASCULAR ACCIDENTS. CURRENT JOURNAL OF NEUROLOGY (IRANIAN JOURNAL OF NEUROLOGY)[Internet]. 2008;7(23):266-271. Available from: https://sid.ir/paper/102790/en

IEEE: Copy

HOSSEIN ALI EBRAHIMI, and S. ADIBEYG, “EVALUATION OF POSTERIOR TIBIAL H/M RATIO IN CEREBROVASCULAR ACCIDENTS,” CURRENT JOURNAL OF NEUROLOGY (IRANIAN JOURNAL OF NEUROLOGY), vol. 7, no. 23, pp. 266–271, 2008, [Online]. Available: https://sid.ir/paper/102790/en

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