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Which of the following nerve conduction study abnormalities is least likely to be seen during the initial phase of acute inflammatory demyelinating polyneuropathy (AIDP)?
A 55-year-old male with a recent history of losing 50 pounds after gastric bypass is referred to the EMG lab with difficulty walking. He has noticed that his left foot drags occasionally causing him to trip and that he has numbness on the top of his left foot up to the middle of his shin. Which of the following statements is the most accurate based on the EMG findings shown below?
A 66-year-old right-handed male presents to the EMG/NCS lab with right upper extremity pain, numbness, and weakness. Based on the data collected, what is the most likely diagnosis?
EMG abnormalities in which of the following muscles can not localize to the brachial plexus?
Which is the following potentials on EMG has an irregular firing pattern?
Which of the following is the most likely diagnosis based on the EMG provided below?
A 65-year-old male is referred to the EMG lab with a recent right leg injury and associated weakness. Based on the EMG shown below, where is the most likely site of neuronal injury?
A 71-year-old male with a history of mild ankle weakness and balance issues for the last 6 years is referred to the lab for a nerve conduction study (NCS). While performing the testing the patient states that a few of his siblings, as well as his father, had similar issues. Examination showed high arches and hammertoes. Based on the clinical history and NCS, what is the most likely diagnosis?
A patient with Duchenne muscular dystrophy (DMD) most likely has which of the following findings on electromyography (EMG)?
A 49-year-old male with a chronic history of myalgias was referred to the EMG lab with progressive muscle weakness. Based on the EMG table shown below what is the most likely diagnosis?
A neurology consult was placed for a 35-year-old male who was admitted overnight after a motor vehicle accident that occurred earlier in the day. He experienced multiple bone fractures, including the right humerus at the spiral groove. The primary team is concerned about a radial nerve injury. Which of the following findings are most likely to be found on EMG/NCS?
A 52-year-old woman is brought to the emergency room in respiratory distress. She is accompanied by her husband who stated that they were eating at a high-end sushi restaurant when his wife started to complain of perioral numbness and tingling. Two hours later she started to complain of generalized weakness and trouble breathing. Accidental poisoning is suspected. Based on the available information, what is the mechanism of action of the poison ingested?
A 66-year-old female comes to the EMG lab with the chief complaint of muscle cramps in the right lower extremity. She started having symptoms after treatment with a cholesterol-lowering medication but despite discontinuing the medication her symptoms persisted. Reflexes are 2+ in upper and lower extremities, except 1+ in the right Achilles. Nerve conduction studies of both lower extremities were normal. An EMG was performed and shown below. What is the most likely diagnosis?
With of the following CMT types present with an axonal pre-dominant peripheral neuropathy?
Which of the following is the first abnormal EMG/NCS finding seen in a patient with carpal tunnel syndrome?