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On the tenth day of admission, nerve conduction studies showed reduced amplitude of sensory and motor action potentials from all the nerves tested (median sensory 1-5 uV; ulnar sensory 2-1 uV; sural sensory 1-2 uV; median motor 5-5 mV; peroneal motor 1-3 mV). The fastest sensory and motor conduction velocities and the shortest distal motor latencies, and F latencies were normal. EMG studies with a concentric needle electrode were normal, except for a slight increment of polyphasia. Blink reflex studies were normal, as was repetitive stimulation. Brain stem auditory evoked responses, somatosensory

No abstract