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A 45-year-old female who is a professional pianist was referred to the EMG lab for right-hand numbness and tingling. Based on the EMG data outlined below where is this patient’s pathological lesion?
Which of the following medications, when taken alongside statin therapy, increases the risk of statin-induced myopathy?
A 35-year-old man developed a right clavicle fracture after an accidental fall from a ladder while hanging Christmas lights. He was treated conservatively with a figure-of-eight bandage and sling. He presents to your clinic 2 weeks after the accident. He states ever since the accident he has had right arm and shoulder pain, as well as numbness extending from his triceps to his middle dorsal aspect of the forearm, wrist, and dorsal aspect of digits 1,2 and 3. On examination, his strength is 5/5 throughout all extremities except 4/5 to abduction of the deltoid, extension of the triceps, and wrist extension.
Which nerve or cord, if injured by the clavicle fracture, would explain his symptoms?
A 67-year-old male presents with the inability to reach for objects in his visual field. He states that he can see the object, but on the clinical exam he can not grasp it accurately. He also is unable to see multiple objects at once. He has a past medical history of atrial fibrillation and an ischemic injury is suspected. A brain MRI would show which of the following areas of the brain is/are affected?
A 78-year-old patient with a history of multiple system atrophy (MSA) presents to your clinic for falls. The patient states that while standing he initially experiences feelings of lightheadedness and tunnel vision before a loss of consciousness. While on the ground he will be “twitching” for 30 seconds before he regains consciousness. Which of the following tests is the most likely to be diagnostic in this case?
A patient presents with sudden-onset gait instability and dysphagia. On exam, he has dysmetria of the right hand, anisocoria, loss of pain and temperature of the right face, and loss of pain and temperature of the left arm and leg. An MRI of the brain is performed and shows a stroke. What other symptom is often also a part of the syndrome this patient is experiencing?
Fibrillations and positive waves are first seen on electromyography (EMG) at which point following a nerve transection?
A four-year-old boy with no significant past medical history is brought to your clinic due to difficulty walking. His mother states that he began walking at 12 months of age, but in the past few months, he seems to be more fatigued and weak when walking. On physical exam, his calves seem to be abnormally large. This disorder is caused by what mutation?
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?
The patient is a 79-year-old male with a past medical history of myocardial infarction who was referred for a nerve conduction study (NCS) to evaluate his slowly progressive lower extremity numbness and weakness. Which of the following pathologies is most commonly associated with the findings shown in the (NCS) shown below?