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A 40-year-old male with bilateral mesial sclerosis and medically refractory epilepsy presents to the epilepsy monitoring unit for a presurgical evaluation. His current anti-seizure medication regimen includes levetiracetam, lamotrigine, and clobazam. Over three days and weaned medication, the patient had 7 seizures; four from the left temporal lobe, and three from the right temporal lobe. Which of the following is the most appropriate next step in treatment?
A 15-year-old male is brought to his primary care doctor by his parents because of learning difficulties in school. Examination revealed several pigmented skin lesions (see below). Which of the following additional findings may be present on examination?
A 22-month-old girl presents with her mother for abnormal movements and loss of milestones. The mother describes the patient frequently and repetitively squeezes and twists her hands, and has lost some of her developmental milestones including fine motor skills and verbal speech. She has stopped walking as well. On examination of growth curves, her head circumference percentile appears to have fallen off of the curve. The patient has no other past medical problems, no past trauma, or past infections, and had been developing normally up until now. Of the following, which is most likely true?
A 68-year-old female presents to your clinic with the chief complaint of daytime somnolence. She endorses an unpleasant feeling in her lower extremities while trying to go to bed which prevents her from sleeping. Moving her limbs gives transient relief. What is the most appropriate first diagnostic test?
Which of the following is the resting membrane potential of a neuron?
A 57-year-old male with recently diagnosed small cell lung cancer (SCLC) is presenting to the electromyography lab with a one-month history of muscle cramps and muscle pain. Percussive myotonia is appreciated on examination. Electromyography showed myokymic discharges. Autoantibodies against which of the following channels are likely present in this case?
Which of the following best describes the clinical features seen in transcortical motor aphasia?
A 76-year-old man with a five-year history of idiopathic Parkinson’s disease presents to your office accompanied by his daughter. She remarks that he has started talking to his wife who passed away 5 years ago. She also frequently finds him frightened, looking around the room at “small people” who are not there. Which of the following is a treatment of choice that is correctly paired with its associated monitoring parameters?
How long ago did the ischemic injury seen on this neuronal tissue micropathology slide occur?
A 57-year-old male presents to the Emergency Room with a 3-month history of progressive altered mental status. On examination, the patient had ataxia and hyperekplexia. An MRI is performed and shown below. What is the most likely etiology of the patient’s deficits?
An MRI brain is ordered for a 6-month-old male with failure to thrive, dystonia, and regression of developmental milestones. The T2 axial images are shown below. Which of the following is most likely the diagnosis?
Submaximal muscle stimulation is used during which of the following aspects of the nerve conduction study?
Which of the following dermatomes lies closest to the T2 dermatome, relative to the topographical position on the skin?
A 10-month-old male with no significant past medical history has had a 2-month history of abnormal movements. The family describes these events as head drops and head-turning. On examination, horizontal nystagmus is appreciated. MRI revealed no abnormal findings. What is the most likely diagnosis?
A patient who was admitted to the neurology intensive care unit for myasthenic crisis developed ventilatory-associated pneumonia on the fifth day of his hospitalization. On the day following the initiation of antibiotic therapy, there was a significant decline in the patient’s respiratory status. Which of the following antibiotics most likely contributed to the patient’s respiratory distress?
You are asked to see a 64-year-old man with hypertension, hyperlipidemia, and peripheral vascular disease who is post-operative day 1 from an aortic aneurysm repair. On exam, he exhibits bilateral lower extremity weakness, as well as loss of pain and temperature sensation below the umbilicus. Light touch and proprioception are intact in the lower extremities. What is the most likely diagnosis?
A 42-year-old man with a 6-month history of progressive muscle weakness has a nerve biopsy performed. Based on the toluidine blue (left) and trichrome (right) stain slides shown, which of the following is the most likely diagnosis?
Alemtuzumab is a monoclonal antibody therapy that targets which of the following proteins?
A 72-year-old male with diabetes, hyperlipidemia, and tobacco abuse is admitted to the stroke service after he is found to have a left superior middle cerebral artery territory stroke. His EKG on admission showed a normal sinus rhythm. A transthoracic echocardiogram (TTE) is performed. Which of the following findings on TTE would lead to the recommendation of an anticoagulant medication over an antiplatelet medication for secondary stroke prevention?
Which of the following is not a risk factor for the development of natalizumab-associated PML?