Q. A 61-year-old lady came to your clinic with numbness, pinpricking, and pain in her right hand. She has had severe osteoarthritis in both wrists for more than ten years, but recently (for the past 2-3 months), a new pain has appeared in her right hand, mainly in the thumb and index finger, which wakes her up during the night and interferes with her activities of daily living. It is associated with severe pinpricking and numbness in the same areas. She tried analgesics and wrist brace, which were not effective. She has a history of hyperlipidemia, hypertension, diabetes mellitus type II, and systemic osteoarthritis, and all of them are being managed by medications. Her BMI is 33 kg/mm2. On physical examination, the joints in the hand are hypertrophic and slightly deformed, the thenar eminence is not atrophic, and sensation over the thenar eminence, thumb, index, and middle fingers is impaired. The motor examination is not reliable due to osteoarthritic pain. You ask for an electromyography/nerve conduction velocity (EMG/NCV) study of the upper limb. What do you expect to find on EMG/NCV?