ABSTRACT
Objective To retrospectively study the clinical and electrodiagnostic features in subacute combined degeneration of spinal cord (SCD)patients. Methods The clinical and electrodiagnostic recordings of all SCD patients conformed in our Neurology Department from Janu?ary 2013 to July 2015 were retrospectively reviewed. Totally 29 patients diagnosed as SCD,whom received no treatment before admitted in our hos?pital,were recruited for the study. Correlation analysis between serum level of vitamin B12(VB12),course of disease and degree of neural lesion was performed,and the electrodiagnostic features were summarized and analyzed. Results The course of disease had significant correlation with the degree of neural lesion(P=0.001),but there was no significant relevance between serum VB12 level and neural damage(P>0.05). Electrodi?agnostic examination revealed:The abnormal rate of motor nerve(15.20%)was lower than that of sensory nerve(42.75%,P<0.001)and the up?per limb nerve(27.1%)was lower than that of lower limb nerve(30.87%,P=0.578). There was no remarkable difference of abnormal rate in all kinds of nerves of motor and sensory nerve(P1=0.320,P2=0.755). In the analysis of the parameters of electromyograph,there was statistical signif?icance of the abnormal rates of compound muscle action potential(CAMP)between each motor nerve(P=0.005). There was statistical signifi?cance of the abnormal rates of CAMP and no function between each sensory nerve(all P<0.001). Conclusion The course of disease has signifi?cant correlation with the degree of neural lesion. Sensory nerve is tended to be betreffend than motor nerve. Phil.always nervous are more likely to be affected than others in motor nerve at CAMP. Tibial nerve is easier to be influenced at CAMP in sensory nerve ,and the lesion is more serious.
ABSTRACT
Objective To study the correlation between the electrophysiological features and mechanical ventilation and long?term outcome in Guil?lain?Barré syndrome(GBS)patients. Methods Electrophysiological and clinical data were retrospectively collected,and compared between venti?lated and not ventilated patients,as well as among each subtype of GBS. Results Totally 38 GBS patients were included in the study,among which 12(32%)were ventilated. The p/d CMAP ratio of the common peroneal nerve was significantly lower in ventilated group compared to not ventilated group(48.7±15.3 vs 80.8±24.0,P=0.005). AIDP was the most common subtype in ventilated patients compared with AMAN and undetermined (46%vs 0%and 9%,P=0.027). The long?term outcome score of AMAN was significantly lower than AIDP(4.3±1.3 vs 2.5±0.9,P=0.028). Conclusion Electrophysiological testing was predictive for mechanical ventilation and long?term outcome:low p/d CMAP ratio of the common pero?neal nerve was helpful for predicting mechanical ventilation,AIDP was prone to develop respiratory failure and had a worse outcome compared to AMAN.