The monosynaptic H-reflex excitability in post-stroke patients
المؤلف
المصدر
Journal of the Faculty of Medicine Baghdad
العدد
المجلد 56، العدد 2 (30 يونيو/حزيران 2014)، ص ص. 225-228، 4ص.
الناشر
تاريخ النشر
2014-06-30
دولة النشر
العراق
عدد الصفحات
4
التخصصات الرئيسية
الموضوعات
الملخص EN
Background : One of the major causes of impaired movements post-stroke is the abnormal phasing of paralytic muscles.
Many studies suggested that inappropriate muscle phasing may be associated with enhanced transmission in the monosynaptic Group la afferent pathway in the affected limb of post-stroke patients and Group la reflexes are abnormally elevated and fail to decrease in amplitude during locomotion.
Objectives : This study was conducted to identify the changes in the Soleus muscle H-reflex excitability at rest in the affected lower limb of post-stroke patients as compared to the contra lateral side and of nonnal controls.
Patients and methods : The excitability of the monosynaptic Hoffman’s (H-reflex) pathway was tested in the affected side of 48 chronic stroke patients during rest and waking by calculation of the H-reflex wave amplitude and the ratio of maximal H / maximal M response amplitudes and compared to the contra lateral side as well as with that of 32 normal subjects of the matching age and sex.
The H-reflex was evoked in the soleus muscle after stimulation of the tibial nerve at the popliteal fossa.
Results : The mean H-reflex wave amplitude (Ha) values are found to have statistical significant difference between the affected and non affected sides as well as between the affected side and the control group (P < 0.05) while the mean maximum M-response amplitude (Ma) showed no statistical differences between all groups (P > 0.05).
However, the ratio of mean amplitude of the maximum H-wave to that of the maximum M-response (Ha / Ma) was significantly higher in the affected side as compared to the contra lateral and control group (P < 0.05).
Conclusion : Our results showed that the Ha / Ma ratio does provide a helpful electrophysiological tool for the assessment of stroke patients by identifying motorneuron hyperexcitability, where in most cases of stroke there is a reflexologic characteristic differentiating them from nonnal, therefore, the Ha / Ma ratio is an interesting test that can be used to interpret recovery patterns and longitudinal effects of therapeutic interventions and follow up post-stroke.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Alwan, Basim M.. 2014. The monosynaptic H-reflex excitability in post-stroke patients. Journal of the Faculty of Medicine Baghdad،Vol. 56, no. 2, pp.225-228.
https://search.emarefa.net/detail/BIM-419581
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Alwan, Basim M.. The monosynaptic H-reflex excitability in post-stroke patients. Journal of the Faculty of Medicine Baghdad Vol. 56, no. 2 (2014), pp.225-228.
https://search.emarefa.net/detail/BIM-419581
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Alwan, Basim M.. The monosynaptic H-reflex excitability in post-stroke patients. Journal of the Faculty of Medicine Baghdad. 2014. Vol. 56, no. 2, pp.225-228.
https://search.emarefa.net/detail/BIM-419581
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references : p. 228
رقم السجل
BIM-419581
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر