CNS Pharmacology USMLE Step 1 Practice Question
A 24-year-old woman comes to the emergency department because of severe upper abdominal pain and nausea for six hours. She describes the pain as constant, radiating to her back, and associated with two episodes of nonbloody, nonbilious vomiting. She has bipolar disorder, for which she began a new medication regimen three weeks ago following a hospitalization for a manic episode. Medical history is remarkable for seasonal allergies. She does not drink alcohol or use illicit drugs. Family history is unremarkable. She is alert and appears uncomfortable. Her temperature is 37.8°C (100.0°F), pulse is 108/min, respirations are 18/min, and blood pressure is 124/72 mm Hg. Examination shows mild epigastric tenderness without rebound or guarding. Laboratory studies show a serum amylase of 480 U/L and a lipase of 850 U/L. Liver function tests and serum triglyceride levels are within the reference ranges. Which of the following is the most likely cause of this patient's symptoms?
Answer choices
- ACarbamazepine
- BValproic acidCorrect answer
- CLamotrigine
- DLithium
- EOlanzapine
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