ABPN Clinical Neurophysiology

Practice session

A 50-year-old with nocturnal hand paresthesias and a positive Tinel sign. Median NCS shows distal motor latency 5.2 ms (upper normal <4.4 ms) and distal sensory latency 4.1 ms (>3.5 ms), with preserved amplitudes and normal proximal conduction. What is the diagnosis?

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