A 22-year-old pregnant woman with a history of profound depression said that she had not bathed or eaten in several days. She felt she was pregnant with the Devil’s baby, and that God was punishing her. She endorsed suicidal thoughts. Which of the following treatments is most appropriate for this patient?

A. Clozapine

B. Sertraline

C. Bupropion

D. Haloperidol

E. Electroconvulsive therapy

A 57-year-old patient presented with seizures and confusion 6 months after a kidney transplant. His MRI is shown. Which of the following medications is most likely responsibly for his symptoms?

A. Cyclosporine

B. Lisinopril

C. Lanthanum carbonate

D. Sevelamer

E. Erythropoietin

A 46-year-old woman presented with a 9-month history of gait imbalance and pain and tingling in her legs. She had gastric bypass surgery 10 years prior. On examination, she had a wide-based gait and profoundly impaired joint position sense. Her family also reported she had become irritable recently. A deficiency of which of the following vitamins is most likely responsible for her symptoms?

A. Vitamin B1/thiamine

B. Vitamin B2/riboflavin

C. Vitamin B7/biotin

D. Vitamin B9/folic acid

E. Vitamin B12/cyanocobalamin