BCPS Therapeutic Decision-Making & Patient Management 4 — Questions and Answers
Question 1: A patient with type 2 diabetes, BMI of 41 kg/m², and a recent MI 6 months ago requires glucose-lowering therapy beyond metformin. Which agent provides the MOST cardiovascular benefit?
- Sitagliptin
- Empagliflozin (Correct answer)
- Pioglitazone
- Glipizide
Correct answer: Empagliflozin
Empagliflozin has demonstrated significant reductions in cardiovascular death and HF hospitalization in the EMPA-REG OUTCOME trial, making it preferred in patients with established ASCVD.
Question 2: A patient with community-acquired pneumonia (CAP) is admitted to the ICU with no Pseudomonas risk factors. Which empiric antibiotic regimen is most appropriate?
- Azithromycin monotherapy
- Piperacillin-tazobactam plus vancomycin
- Beta-lactam plus azithromycin or respiratory fluoroquinolone (Correct answer)
- Cefazolin plus doxycycline
Correct answer: Beta-lactam plus azithromycin or respiratory fluoroquinolone
IDSA/ATS guidelines recommend combination therapy for severe CAP requiring ICU admission: a beta-lactam (ceftriaxone or ampicillin-sulbactam) plus a macrolide or monotherapy with a respiratory fluoroquinolone.
Question 3: A 60-year-old female with osteoporosis and a T-score of -2.8 at the femoral neck has been on alendronate for 5 years. A drug holiday is being considered. What is the appropriate FRAX threshold to consider a holiday?
- 10-year hip fracture risk >3%
- 10-year major osteoporotic fracture risk >20%
- 10-year hip fracture risk <3% and major fracture risk <20% (Correct answer)
- Any T-score above -2.5 after 5 years
Correct answer: 10-year hip fracture risk <3% and major fracture risk <20%
A drug holiday after 5 years of oral bisphosphonate therapy is appropriate for patients at lower fracture risk (hip fracture risk <3% and major osteoporotic fracture risk <20%), where the residual effect provides continued protection.
Question 4: A patient is prescribed linezolid for VRE endocarditis. Which concurrent medication poses the MOST significant pharmacodynamic drug interaction risk?
- Metronidazole
- Sertraline (Correct answer)
- Fluconazole
- Daptomycin
Correct answer: Sertraline
Linezolid is a weak MAO inhibitor; combining it with serotonergic agents like sertraline risks serotonin syndrome, a potentially life-threatening pharmacodynamic interaction.
Question 5: In a patient with Clostridium difficile infection (CDI) that is severe and a second recurrence, which is the PREFERRED treatment option?
- Metronidazole 500 mg three times daily for 14 days
- Vancomycin 125 mg four times daily for 10 days
- Fidaxomicin 200 mg twice daily for 10 days (Correct answer)
- Bezlotoxumab plus vancomycin
Correct answer: Fidaxomicin 200 mg twice daily for 10 days
IDSA guidelines recommend fidaxomicin for recurrent CDI over vancomycin due to its superior sustained clinical cure rates and lower recurrence risk.
Question 6: Which of the following best describes the pharmacodynamic goal for beta-lactam antibiotics in optimizing bacterial killing?
- Maximize peak serum concentration (Cmax/MIC)
- Maximize the time free drug exceeds the MIC (fT>MIC) (Correct answer)
- Maximize the 24-hour AUC/MIC ratio
- Minimize trough concentrations to reduce toxicity
Correct answer: Maximize the time free drug exceeds the MIC (fT>MIC)
Beta-lactams exhibit time-dependent killing; efficacy is best correlated with the percentage of the dosing interval that free drug concentrations remain above the MIC (fT>MIC).
Question 7: A 58-year-old patient with rheumatoid arthritis on methotrexate 20 mg weekly develops a persistent dry cough and dyspnea. Chest X-ray shows bilateral interstitial infiltrates. The MOST appropriate management is:
- Add prednisone and continue methotrexate
- Discontinue methotrexate and evaluate for drug-induced pneumonitis (Correct answer)
- Switch to sulfasalazine and treat pneumonia empirically
- Reduce methotrexate dose to 10 mg weekly
Correct answer: Discontinue methotrexate and evaluate for drug-induced pneumonitis
Methotrexate-induced pneumonitis is an idiosyncratic, potentially fatal complication requiring immediate discontinuation of the drug, as continued exposure worsens outcomes.
BCPS Therapeutic Decision-Making & Patient Management 4
A patient with type 2 diabetes, BMI of 41 kg/m², and a recent MI 6 months ago requires glucose-lowering therapy beyond metformin.
Which agent provides the MOST cardiovascular benefit?