Answer to Question 1
ANS: A
Pneumonia involves inflammation and consolidation of lung tissue. Pneumonia is broadly categorized by whether it occurs outside of the hospital (community-acquired pneumonia) or within the hospital (nosocomial, or hospital-acquired, pneumonia). The cause is most often Streptococcus pneumoniae, Haemophilus influenzae, or Staphylococcus aureus. Atypical pneumonia involves infection of mycoplasma, legionella, or chlamydia.
Answer to Question 2
ANS: B
Cough is classified as acute (less than 3 weeks in duration), subacute (lasting 3 to 8 weeks), and chronic (8 or more weeks in duration), and these distinctions help to narrow the potential differential diagnoses.