For each of the following outpatient clinical scenarios, select the most appropriate initial targeted pharmacotherapy.
- A 60-year-old man presenting with acute onset of severe pain, swelling, and erythema in his right first metatarsophalangeal joint. He has a history of stage IV chronic kidney disease.Oral prednisone
- A 30-year-old woman at 12 weeks gestation presenting with an expanding annular erythematous rash with central clearing, two weeks after hiking in an endemic region.Oral amoxicillin
- A 45-year-old woman presenting with dysuria, urinary frequency, and suprapubic discomfort without fever or flank pain.Oral nitrofurantoin
- A 52-year-old man presenting with a 3-cm fluctuant skin abscess surrounded by erythema and a history of recurrent methicillin-resistant Staphylococcus aureus (MRSA) infections.Oral trimethoprim-sulfamethoxazole
Answer
Gout with CKD matches to oral prednisone. Pregnant Lyme disease matches to oral amoxicillin. Uncomplicated cystitis matches to oral nitrofurantoin. Purulent MRSA abscess matches to oral trimethoprim-sulfamethoxazole.
Each appropriate therapy accounts for the specific infectious organism or inflammatory process while actively avoiding major drug-condition interactions, such as teratogenicity in pregnancy and nephrotoxicity in advanced renal failure.
Step-by-Step Solution
Key Concept
Selecting appropriate initial pharmacotherapy for common outpatient conditions by adapting to specific patient contraindications, such as pregnancy and renal impairment.