Nghiên cứu một số đặc điểm điện cơ dây thần kinh giữa trên bệnh nhân hội chứng ống cổ tay

Abstract

Objective: To describe and evaluate some characteristics of electromyography (EMG) of the median nerve of carpal tunnel syndrome. Subject and method: The study was conducted on 30 patients diagnosed with carpal tunnel syndrome by symptoms clinic and EMG at the Hanoi Medical University Hospital by Neurologist. Result: In the research group: The reduction of sensory transmission speed was 90%. 86.7% had a prolonged sensory latency. Reducing the amplitude of sensory response meets 80%. Meanwhile, prolonged motor latency was 33.3%. The motor transmission speed was 40%. Reduce the amplitude of motor response 86.7%. In the carpal tunnel syndrome, the medium sensory latency of the median nerve was 3.08 ± 0.52ms and last longer than normal (2.82 ± 0.583ms) with statistical significance with p=0.019 < 0.05. The medium of sensory transmission speed in the hand was 37.4 ± 5.71m/s less than the normal hand (40.78 ± 7.63m/s) with statistical significance with p=0.029 < 0.05. Other indicators do not see any significant difference. Conclusion: In carpal tunnel syndrome: The most common is reducing of sensory transmission speed (90%), prolonging the sensory latency time by 86.7%, reducing the 80% sensory response amplitude. The patient's side with the normal side, the average indices of abnormal EMG changes of the medium nerve of sensory fiber have a statistically significant difference.