1. A 65-year-old male presents with fever, chills, pleuritic chest pain, and a productive cough for 5 days. Chest x-ray shows an infiltrate in the right lower lobe. What is the most appropriate next step in management?

• Begin oral azithromycin
• Begin intravenous ceftriaxone and oral doxycycline
• Obtain sputum cultures and begin empiric antibiotics
• No antibiotics or testing needed at this time

2. A 22-year-old female college student presents with 5 days of productive cough, fever, and pleuritic chest pain. She has no significant medical history. Chest x-ray confirms right lower lobe pneumonia. What is the most likely causative organism?

• Streptococcus pneumoniae
• Mycoplasma pneumoniae
• Haemophilus influenzae
• Staphylococcus aureus

3. A 66-year-old female with COPD presents with increased cough and dyspnea for 3 days along with a low-grade fever. Chest imaging confirms right upper lobe pneumonia. What antibiotic has the highest resistance rates for her scenario?

• Levofloxacin
• Azithromycin
• Ceftriaxone
• Doxycycline

4. A 35-year-old homeless alcoholic male presents with productive cough, hemoptysis, and fever for 1 week. Chest x-ray reveals cavitary lesions concerning for necrosis. What organism is most likely causing his pneumonia?

• Klebsiella pneumoniae
• Pseudomonas aeruginosa
• Staphylococcus aureus
• Streptococcus pneumoniae

5. A 42-year-old female with DM2 is hospitalised for severe CAP. Despite IV antibiotic therapy for 48 hours, she remains febrile and hypoxic. What is the next best step?

• Add IV azithromycin
• Begin oral corticosteroids
• Obtain CT chest
• Transfer to ICU