A 42-Year-Old Man Comes to the Emergency Department Due to Fever

question 73

Multiple Choice

A 42-year-old man comes to the emergency department due to fever, abdominal pain, and explosive diarrhea.  He has a history of HIV but has not been taking any medications.  BMI is 18.2 kg/m².  Abdominal examination is notable for right-sided tenderness to palpation.  Laboratory results show a CD4 cell count of 38/mm³, leukopenia, and thrombocytopenia.  A CT scan of the abdomen reveals colitis.  Colonoscopy reveals areas of erosions and ulcerations; pathology demonstrates cells with viral intranuclear and intracytoplasmic inclusions.  Antiviral therapy is initiated to treat the colitis with an intravenous agent that does not require intracellular activation and is known to bind in vitro with viral-encoded enzymes such as DNA polymerase, RNA polymerase, and reverse transcriptase.  Which of the following agents did this patient most likely receive?

• A)Acyclovir
• B)Foscarnet
• C)Ganciclovir
• D)Lamivudine
• E)Oseltamivir
• F)Saquinavir
• G)Sofosbuvir

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Definitions:

Break-even Point

The point at which total costs equal total revenue, meaning the business makes neither a profit nor a loss.

Variable Cost

Costs that change in proportion to the level of production or business activity, such as materials, labor, and utility costs.

Fixed Costs

Costs that do not vary with the level of production or sales, such as rent, salary, or insurance, providing stability to a company's expense structure.

Margin of Safety

The difference between actual or projected sales and the break-even point, often expressed as a percentage.