Quiz 06/14/2022

A 23-year-old female with a past medical history of depression presents with right arm paralysis that started after she found out her boyfriend died from a motor vehicle accident. Her physical exam shows no effort during muscle strength testing and positive withdrawal when a noxious stimulus is applied. The rest of the neurological examination, including reflexes, was normal. MRI of the brain and cervical spine were unremarkable. Which of the following is the most likely diagnosis?

The paraspinal muscles are innervated by which of the following?

Neural tube defects will develop at which point in fetal development?

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 57-year-old woman with a past medical history of hypothyroidism was referred to the EMG lab with a one-year history of right-hand numbness. Based on the EMG data shown below, what is the most appropriate next step in medical management?

An MRI is performed on a 40-year-old man after experiencing his first unprovoked seizure. The lesion appreciated on the MRI T2 sequence shown below is most likely which of the following?

Which of the following is the most common gene associated with early-onset Alzheimer’s disease?

Which of the following is not typically treated with indomethacin?

A consult is placed for paroxysmal episodes in a 6-day-old male infant born at 32 weeks gestation. According to his mother, the infant seems to be shivering a lot “like he is cold”. The mother states that she has been wrapping him in warm blankets and keeping the room at a warm temperature. On physical exam, the infant is alert and interactive, without persistent focal neurological deficits. However, when touching the left arm, the patient develops a fine tremor that resolves after flexing the affected limb. Vital signs are within normal limits. Which of the following is the most likely diagnosis?

Which of the following dermatomes are correctly matched with their associated anatomical location?

A 46-year-old female presents to the clinic with right-hand numbness, specifically in the 4th and 5th digits. EMG testing reveals fibrillations on the first dorsal interosseous, and flexor pollicis longus. EMG testing of the abductor pollicis brevis and triceps was unremarkable. These findings are most likely caused by radiculopathy of which of the following nerve roots?

A 16-year-old male with no significant past medical history presents to the emergency room with vision complaints and coordination issues. Four days ago, he began experiencing double vision and since then has had progressive difficulty picking up objects and buttoning his shirts. On physical exam, the patient has a decreased range of motion of the extraocular muscles bilaterally, as well as areflexia and ataxia when walking. What is the most likely diagnosis?

A 32-year-old female with an acute ischemic stroke was sent for an urgent angiography. Below is the image captured from this study. What is the likely etiology of the patient’s acute ischemic stroke?

A focal seizure must involve how much cortex in order to be appreciated with scalp EEG recording?

A 4-year-old male is brought to your clinic by his father who states that he has been experiencing random jerky movements of his arms and his neck for the past year. His father states that the jerky movements have not gotten worse over time but tend to appear more when the boy is agitated or under stress. The movements cease when he is asleep. The patient has otherwise been meeting all of his developmental milestones. Genetic testing reveals a mutation in TITF1, a thyroid transcription factor. What is the diagnosis?