Quiz 05/28/2022 (1)

Which of the following occurs at point “4” on this diagram of an action potential?

A 72-year-old man with a history of right-sided carotid stenosis was transferred from an outside hospital to your institution to have a carotid stent placed after experiencing a mild right-hemispheric ischemic stroke. The patient was sent to the angiography lab and had a carotid stent placed, however, it was done so on the unaffected (left) side. What is this an example of?

A blood clot in which artery explains the findings below?

Other than optic neuritis, which of the following is another typical MRI finding in patients with neuromyelitis optica (NMO) that has diagnostic value?

Which of the following primary CNS tumors carries the highest risk of disseminated metastatic disease through the spine via CSF seeding?

This brain biopsy is consistent with which of the following pathologies?

A 20-year-old female presents to the clinic with weakness and numbness in the right leg. She states that earlier in the day she was taking a long nap on her right side, and when she awoke, her entire leg felt like pins and needles. When she got up, she felt that she was dragging her right leg on the floor. She has had similar experiences in other limbs over the years but symptoms would slowly improve over weeks. Nerve conduction studies showed a right common peroneal nerve conduction block and mildly decreased conduction velocities of all nerves tested. Her mother reports that her father had similar episodes before he passed away from an unrelated illness. Which of the following is the most likely diagnosis?

You are caring for a 1-year-old girl with severe refractory epilepsy with frequent focal seizures. She had normal developmental until 3 months of age when she had seizure onset as well as a loss of milestones. Continuous EEG revealed multiple seizure types, with multiple foci of onset in each hemisphere. The seizures appear to migrate between hemispheres on EEG, and clinically. Which gene is most often associated with this disorder?

Which of the following is the annual conversion rate of mild cognitive impairment (MCI) to dementia?

A 57-year-old male with an unknown past medical history who recently immigrated from South Asia presents to the emergency department with new-onset skin lesions on his arms. On physical exam, the patient has two large, erythematous lesions with a clearly demarcated but flat border. The nerves around these lesions appear thickened. Biopsy of the lesions shows epithelioid cell granulomas and few bacteria. What is the most likely diagnosis?

In the diagram below, what neurologic information is carried by the tract labeled with the green arrow?

Which of the following is the mechanism of action of riluzole?

Which of the following findings is depicted in the catheter angiogram shown?

This muscle biopsy is most consistent with which myopathic disease?

A 31-year-old man presents after being found down at the scene of an armed robbery. On physical examination, there is lower extremity weakness and loss of proprioception and vibration on the right side, as well as loss of pain and temperature sensation on the left leg. His sagittal CT spine is shown below. Which is the most likely condition suffered by this man?

A 78-year-old male with no past medical history presents to the ED with left-sided hemiparesis and slurred speech at 9 AM. She is unable to provide a clear clinical history. She was noted to be found at 7:30 AM in bed with the above-stated symptoms. Her husband states that the patient went to bed at 10:00 PM the previous night without any symptoms. CT head shows no blood or hypodensities, and CTA head/neck reveals a right MCA occlusion. Her NIHSS is 17. Which of the following treatment options is the most appropriate next step based on the available data?

Occlusion of the vessel labeled 1 in the angiogram below would lead to which of the following symptoms?

A 48-year-old male with a history of a motor vehicle accident and right leg tibial plateau fracture was referred to a neurologist because of right leg weakness. He states he often catches his right foot while walking and stubs his toes when he walks barefoot. On examination, there is decreased strength with both ankle dorsiflexion and foot inversion. Weakness of which of the following muscles is responsible for the patient’s symptoms?

A 35-year-old woman with a past medical history of ocular and oral dryness presents with a 5-month history of progressive difficulties with ambulation. On exam, there is diminished vibratory sensation along the plantar/dorsal surfaces of her feet, 1+ ankle reflexes bilaterally, and a positive Romberg sign. Strength is normal. A tissue biopsy confirms the diagnosis. Which of the following is the most likely diagnosis?

Which of the following medications is associated with the occurrence of reversible cerebral vasoconstriction syndrome (RCVS)?