Objective: To analyze the characteristics of electromyography (EMG) in POEMS syndrome and provide a reference for the disease identification. Methods: The EMG of 8 patients with POEMS syndrome in our hospital (patient group) has been analyzed in detail. The extraction rate of compound muscle action potential(CMAP), sensory nerve action potential(SNAP) and F-wave of upper and lower limbs has been compared. The CMAP and SNAP amplitude (AMP), motor nerve conduction velocity (MCV), sensory nerve conduction velocity (SCV), distal motor latency (DML), the F-wave latency of median nerve and tibial nerve, the terminal latency index (TLI) of median and ulnar nerve, and the needle pole electromyography (EMG) has been statistically analyzed with the healthy control group as a reference. Results: In the patient group,the appearance of SNAP was lower than that of CMAP (P＜0.05), the appearance of CMAP and SNAP was apparently higher in the upper limb than in the lower limb(P＜0.05), The F-wave extraction rate of median nerve (100 %) was higher than that of tibial nerve (0 %). In comparison with the control group , the DML was prolonged, the CMAP and SNAP amplitude was decreased, the MCV and SCV was slowed down, the F-wave extraction rate of tibial nerve was decreased, and the latency of median nerve F-wave was longer in the patient group (P＜0.05). The ulnar nerve terminal latency index (TLI) in the patients group was significantly higher than that in the normal group (P＜0.05). The abnormal rate of needle electromyography was 24.14 % in the patient group, and the abnormal rate of anterior tibial muscle was the highest (50 %). Conclusion: Motor nerve and sensory nerve conduction are all abnormal in POEMS patients, F-wave abnormal rate is high, electromyography may appear neurogenic damage, tibialis anterior muscle was the most commonly involved.
YUE Yayan
,
YU Ming
. Electrophysiological characteristics on POEMS Syndrome[J]. Journal of Baotou Medical College, 2023
, 39(3)
: 37
-41
.
DOI: 10.16833/j.cnki.jbmc.2023.03.008
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