A 6-year-old boy presents to the pediatric Emergency Department for evaluation of lethargy, nausea, and vomiting. PMH is unremarkable. Physical examination is notable for papilledema and right-sided dysmetria (abnormal coordination of movements). An MRI brain with and without contrast demonstrates a cerebellar cystic mass, and pathology report indicates pilocystic astrocytoma (Grade 1). Based on your understanding of the grading system of astrocytoma tumors, which of the following statements is correct?

A 10-year-old boy is referred to you for being fidgety at school, though he achieves good grades. Prior medical history is unremarkable, and there has been no recent illness. Routine laboratory testing, including antistreptolysin O titer and throat culture, are normal. The father reports that he had a similar history as a child. While speaking with the patient, you notice that he clears his throat several times per minute. Examination is otherwise normal, except for the presence of brief, repetitive movements of the face, neck, and shoulders while at rest (e.g., facial grimacing, shoulder shrugging, eye blinking). Based on this information, which of the following conditions is the most likely diagnosis for this patient?

Which of the following statements best describes a complex focal seizure (Focal seizure with impaired awareness)?

When evaluating acute ischemic stroke with CT perfusion imaging, the area known as the penumbra is defined as the ischemic area of the brain which may be salvaged by intervention (e.g., thrombolysis or clot retrieval).

A 64-year-old male with hypertension presents with sudden onset of right eye blindness while shaving this morning. He describes a “curtain falling over my right eye,” which cleared spontaneously after 10 minutes. He had no other concurrent neurologic symptoms and no prior episodes of similar description. His general examination reveals a blood pressure of 140/90 mmHg, but it is otherwise unremarkable. Neurologic exam is normal. Which of the following conditions is the most likely diagnosis?

A 48-year-old female patient has sustained a head injury in after falling off a porch and has an initial Glasgow Coma Scale score of 14 [E4, V4, M6]. How would you interpret this GCS score?

The nurse is caring for a client who just arrived to the ED with signs and symptoms of severe hypervolemia. Which of the following interventions will the nurse complete first?

Which of the following diagnostic test results would support a diagnosis of multiple sclerosis?

A 26-year-old female patient with no significant PMH is brought to the Emergency Department after experiencing a witnessed generalized tonic-clonic seizure in the supermarket. The seizure ended after 2 minutes, but the patient remained confused. Vital signs: BP 118/72, HR 90/min, RR 16/min, T 98.6F On exam, she is currently alert and fully oriented. She does not remember the events during the seizure and states she has not experienced this before. There is no nuchal rigidity and motor and sensory exam is unremarkable. Fingerstick blood glucose is 100 mg/dL. Serum electrolytes, CBC, and urine toxicology results are all within normal limits. EKG is without abnormality noted. What is the most appropriate next step in the management of this patient?

Evaluation of a patient who presents with a new onset peripheral neuropathy should include which of the following laboratory tests?