Electroneurographic parameters in patients with metabolic syndrome

Abstract

Introduction: The aim of this study was to measure electroneurographic (ENG) parameters of the median and ulnar nerve in patients with metabolic syndrome and to determine whether the large imbalance in glycemic control came to neuropathic changes to the template.

Methods: The study included 100 patients with metabolic syndrome diagnosed according to the criteria of the National Cholesterol Education Program - Adult Treatment Panel III (NCEP-ATP III). The patients were divided into two groups. Group I – patients with normal glycemic control and Group II - patients with diabetes mellitus for up to five years. We measured sensory conductive velocity (SCV), the amplitude of sensory nerve action potential (SNAP), motor conductive velocity (MCV), terminal motor latency (TML) and compose muscle action potential after distal stimulation (CMAP-I) and after proximal stimulation (CMAP-II) for the ulnar and median nerve.

Results: Sensory and motor parameters in Group II were amended to neuropathic pattern compared to Group I. There were significant differences in: SNAP amplitude for all tested nerves, SCV values for both left and right median and ulnar nerve; MCV and TML for left median nerve; MCV, TML and CMAP-I for right median nerve area; MCV and TML for left ulnar nerve; MCV, CMAP-I and CMAP-II for right ulnar nerve area.

Conclusion: Patients with metabolic syndrome and diabetes mellitus duration of five years have the significant changes in sensory and motor peripheral nerves. Neuropathic changes are possible in patients with metabolic syndrome and normal glycemic control.