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A 65-year-old female presents with a complaint of burning and tingling of her feet. Symptoms started in her toes two years ago and now extend up to her ankles. Neurological examination showed normal strength and intact sensation to light touch and vibration but an impaired sensation to pinprick in the first toes bilaterally. If performed, which of the following studies would likely be abnormal?
A 57-year-old male undergoes a cervical decompression laminoplasty for myelopathy, and on postoperative day #2, he complains of severe left shoulder pain. On examination, he has weakness with abduction of the left arm at the shoulder and flexion of the left arm at the elbow. This patient’s lesion localizes to which nerve root?
A 62-year-old man comes to the clinic complaining of a 2-month history of difficulties getting up from a chair, climbing steps at work, and lifting objects above his head. His primary care physician also noticed a rash on sun-exposed areas of the man’s body. EMG of proximal muscles on this patient with likely reveal which is the following?
Cool limbs during a nerve conduction study will have which of the following effects on the data recorded?
Which of the following is the resting membrane potential of a neuron?
A 33-year-old female presents to the clinic for evaluation of a left lower extremity foot drop. On physical examination, there is weakness in dorsiflexion. Ankle eversion, inversion, and plantar flexion strength are normal. Hip abduction strength is normal as well. Which of the following is the most likely etiology for the patient’s symptoms?
You are asked to evaluate a patient in the neurointensive care unit who is comatose and has had a somatosensory evoked potential performed. Which of the following is most suggestive of a poor prognosis for this patient?
Which of the following muscles is solely innervated by the C5 nerve root?
Which of the following nerves when damaged can lead to scapular winging?
A thin 28-year-old male presents to the clinic with complaints of foot drop. On exam, he has a right foot drop as well as numbness on the lateral aspect of the right lower leg. You suspect compression of a nerve at the fibular head. Malfunction of which of the following nerves causes the foot drop itself?
The F wave response is an:
Which of the following is the most likely diagnosis based on the EMG provided below?
Fibrillations and positive waves are first seen on electromyography (EMG) at which point following a nerve transection?
A 55-year-old male presents to the clinic with a complaint of right lower extremity pain and weakness. On examination of the right lower extremity, there is decreased sensation to pinprick on the medial calf and foot, 4/5 strength with knee extension, and a mute patellar reflex. These findings are most likely due to radiculopathy of which of the following nerve roots?
A 19-year-old male was admitted to the hospital with a 2 weeks history of progressive lower extremity weakness. CSF studies showed an elevated CSF protein and normal WBC count. MRI of the lumbar spine showed contrast enhancement of the cauda equina. His nerve conduction study (NCS) is shown below. What is the most appropriate next step in medical management?