Match each patient's clinical presentation and unique host factors with the most appropriate empiric or targeted pharmacotherapy.
- A 67-year-old man with altered mental status, fever, and nuchal rigidity. He has a documented history of severe, IgE-mediated anaphylaxis to penicillin.Intravenous vancomycin, moxifloxacin, and trimethoprim-sulfamethoxazole
- A 28-year-old woman at 16 weeks gestation presenting with a slowly expanding, 8-cm annular erythematous rash with central clearing on her thigh after a camping trip.Oral amoxicillin
- A 42-year-old man with advanced HIV (CD4 count 35 cells/mm³) presenting with severe odynophagia. Endoscopy reveals large, deep, linear ulcerations in the mid-to-distal esophagus.Intravenous ganciclovir
- A 72-year-old woman in a skilled nursing facility who develops frequent, watery, foul-smelling diarrhea and a leukocyte count of 22,000/mm³ following a recent course of clindamycin.Oral fidaxomicin
- A 35-year-old man from Ohio presenting with a 3-week history of fever and cough. Transbronchial biopsy reveals narrow-based budding yeasts within macrophages.Oral itraconazole
Answer
The correct matches align specific host factors (such as pregnancy, severe allergies, or immunosuppression) and characteristic clinical presentations with their guideline-directed antimicrobial therapies.
Each correct pairing synthesizes the diagnostic clues of a specific infectious disease with current treatment guidelines, adjusting for critical host modifiers like pregnancy and allergies.
Step-by-Step Solution
Key Concept
Tailoring antimicrobial therapy requires integrating pathogen suspicion with critical host factors such as age, immune status, pregnancy, and drug allergies.