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Electrophysiological evaluation in 4 patients with diabetic pseudotabes

Neural Regeneration Research 2007年第5期2卷 301-304页

作者： Xiaofang Cai Qionghua Huang Department of Neuroelectrophysiology Zhongshan Hospital Xiamen University Xiamen 361004 Fujian Province China

BACKGROUND： Researches on diabetic nervous system lesion are mainly focus on peripheral nerve and vegetative nerve, so there are few investigations on diabetic pseudotabes. OBJECTIVE： To investigate the electrophysiological examinations on the diagnosis of diabetic pseudotabes. DESIGN： Case study. SETTING： Department of Electrophysiology and Department of Neurology, Zhongshan Hospital Affiliated to Xiamen University. PARTICIPANTS： A total of 4 patients with type 2 diabetes mellitus, including 3 males and 1 female aged from 50 to 72 years, were selected from Department of Neurology, Zhongshan Hospital Affiliated to Xiamen University from March 2002 to February 2005. All accepted subjects met the modified diagnostic criteria of diabetes mellitus, which was set by American Diabetes Mellitus Association （ADA） in 1997. Otherwise, the subjects had typical symptoms and physical signs of spinal posterior funiculus damage. However, patients with spinal cord lesion which was caused by other factors were excluded. All accepted subjects provided the confirmed consent. METHODS： Nicolet NT electromyography （EMG）/evoked potential meter （made in the USA） was used to detect spinal cord conduction velocity （SCCV）, somatosensory evoked potential （SEP） of lower limbs, motor nerve conduction velocity （MNCV） and sensory nerve conduction velocity （SNCV） of extremities. Determining criteria： Measurements were performed based on the laboratory standards. SCCV, which was less than lower limit of normal value （T2–12： 40–55 m/s, T12–L4： 20–41 m/s, T2–L4： 36–45 m/s）, was regarded as abnormal. SEP value of lower limbs： P40, P60 and PF, which were more than standard deviation of normal value （x — ＋2.5）, were regarded as the abnormality. Normal value of P40, P60 and PF latencies （x —±s） in this study： P40, P60 and PF in males were （37.6±1.9） ms, （59.8±3.9） ms and （7.6±0.9） ms, respectively; meanwhile, those in females were （35.5±1.7） ms, （55.2±2.7） ms and （6.3±0.7） ms, respectively. MNCV and SNCV,

关键词： diabetes mellitus tabes dorsalis evoked potentials, somatosensory neural conduction electrophysiology

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