Respiratory Infections

Question 1

Typical pneumonia most common bacterial pathogen

Answer 1

Streptococcus pneumoniae

Question 2

Procalcitonin in viral pneumonia

Answer 2

Typically, low procalcitonin (<0.25 ng/mL)

Question 3

Procalcitonin in bacterial typical pneumonia

Answer 3

Typically, elevated procalcitonin

Question 4

Procalcitonin in atypical pneumonia

Answer 4

Typically, low or mildly elevated procalcitonin

Question 5

Pathogen coverage for empiric treatment of community acquired pneumonia

Answer 5

Streptococcus pneumoniae, Haemophilus influenzae, and atypical pathogens (ie, Mycoplasma pneumoniae, Legionella pneumophila, and Chlamydia pneumoniae)

Question 6

Empiric regimen for community acquired pneumonia

Answer 6

high-dose amoxicillin or amoxicillin-clavulanate to cover typical pneumonia AND macrolide or doxycycline for atypical pathogens

Question 7

CAP empiric antibiotic dosing

Answer 7

amoxicillin 1 g TID x5 days OR amox-clav 875 mg BID x 5 days AND doxycycline 100 mg BID x5 days OR azithromycin 500 mg on day 1 then 250 mg for 5 total days

Question 8

Respiratory quinolones

Answer 8

levofloxacin, moxifloxacin, gemifloxacin