A 33-year-old sexually active female with a history of recurrent vulvar Candida infections presents to her primary care physician for guidance. She has tried treatment with topical miconazole and also with nystatin powder. What is the likely clinical outcome given that she has been treated with both agents?

A 33-year-old sexually active female with a history of recurrent vulvar Candida infections presents to her primary care physician for guidance. She has tried treatment with topical miconazole and also with nystatin powder. What is the likely clinical outcome given that she has been treated with both agents?

A 52-year-old female presents with facial wrinkling that has not been satisfactorily treated with creams. She requests information on botulinum toxin A at an acquaintance’s recommendation. Botulinum toxin’s mechanism of action is most similar to which other bacterial toxin?

A 45-year-old man with HIV disease and herpesvirus has begun on therapy with foscarnet. The medication is administered intravenously. If serum electrolytes are drawn on this patient after 1 week of therapy, which of the following laboratory values would be expected to be abnormal?

A 43-year-old man with leukemia is hospitalized for treatment after his prior chemotherapeutic regimen failed to produce remission. Bone marrow biopsy is repeated and indicates the presence of hairy cell leukemia. Treatment with fludarabine has begun. This agent likely works in which of the following ways?

A 63-year-old woman presents with a productive cough, shortness of breath, and fever and chills. Past medical history is significant for chronic renal disease. After a standard dose of which of the following drugs would you expect to see the greatest increase in serum drug concentration?