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A 47-year-old man with a history of bilateral cataract surgery at the age of 20 presents to the clinic for evaluation of progressive unsteadiness and cognitive decline. His father and older brother reportedly had similar symptoms in their early adulthood as well. On exam, there is notable dysmetria and gait ataxia. There were also abnormal soft-tissue masses appreciated near the Achilles tendons bilaterally. Which of the following is most likely to be abnormal in this patient blood?
A 35-year-old female with a history of heroin abuse was found unresponsive and received 35 minutes of CPR before a return of spontaneous circulation (ROSC). She was intubated in the field and was brought urgently to the hospital. While in the ICU, the nursing staff noticed abnormal movements concerning for possible seizure. An EEG was performed and shown below. What is this finding most consistent with?
Which of the following is seen on muscle biopsy in patients with steroid myopathy?
In normal neonatal development, which of the following structures myelinates the latest?
A 20-year-old male presents to your clinic for weakness. He is the star baseball player at the local university, but during the season his batting average has been dropping, and he finds he is having trouble standing on his toes, performing overhead shoulder presses, and more recently ascending steps. You give him a script for some blood testing and an EMG/NCS and schedule a follow-up in 2 weeks.
Unfortunately, shortly after returning home he had a fall down a flight of stairs and sustained a compound radius fracture. He was taken to the emergency room where an open reduction and fixation (ORIF) was performed. Shortly after the surgery, he developed tachycardia, tachypnea, and masseter muscle contractions, which then progressed to fever and rigidity.
Which of the following test results is most likely to be seen in this patient?
A 56-year-old woman with recent open-heart surgery develops sudden onset, painless right eye vision loss. On funduscopic examination, the optic disc appears swollen and pale. No other significant findings were appreciated on the funduscopic exam. Damage to which of the following structures is the most likely cause of the patient’s symptoms?
Which of the following is the mechanism of action of ropinirole?
A patient with a history of low back pain had an MRI of their lumbar spine completed as part of their workup. The T2 FLAIR image of the lumbar spine MRI is shown below. What is the most likely diagnosis?
Which of the following muscles is solely innervated by the C5 nerve root?
A blood clot in which artery explains the findings below?
A 28-year-old woman with a history of intractable epilepsy presents to you for outpatient follow-up. She has been seizure-free on valproic acid and levetiracetam for the last 18 months. She reports a desire to become pregnant and asks if she has an increased risk of in-utero defects with her medications. Which of the following is the most appropriate answer to this question?
Motor unit action potential (MUAP) conduction velocities of a newborn are what percentage of an adult?
The pathology seen in the image below is most likely related to maternal use of which of the following medications?
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?