Community Acquired Pneumonia Exam
Questions And Answers Graded A+
What is pneumonia?
Inflammation of the lung in which fluid fills the alveoli. Bacteria, viruses and fungi are responsible.
Physicians distinguish community-acquired pneumonia from nosocomial pneumonia.
What will you hear upon auscultation of pneumonic lungs?
Rales
What bacterial agents cause community-acquired pneumonia?
1) S. pneumoniae
2) Legionella pneumophila
3) Mycoplasma pneumoniae
4) Chlamydophila pneumoniae
Is S. pneumoniae normal biota of the upper respiratory tract?
Yes. 5-50% of the population are carriers.
What type of pneumonia does S. pneumoniae cause?
Lobar pneumonia with consolidation
Is there a vaccine to protect against S. pneumoniae lower respiratory infection?
Yes. Pneumococcal polysaccharide vaccine.
What is the morphology of Legionella pneumophila?
G- pleomorph (coccus-filaments) that are poorly staining.
What is the physiology of L. pneumophila?
Obligate aerobes with fastidious nutritional requirements. Require a charcoal yeast-extract medium.
Slow growers.
What is legionellosis?
Legionnaire's disease- early symptoms include dramatic rise in temperature within 24 hours.
Nonproductive cough, vomiting and diarrhea may occur. Later, bronchopneumonia that is frequently
confluent (may resemble lobar). X-ray will show "moth-eaten" regions where fluid has accumulated.
Death (15-20%) is preceded by renal failure, shock and/or respiratory failure.
What is Pontiac fever?
Much less severe illness characterized by short incubation period (hours), fever, heave, dry cough. No
evidence of pneumonia. Self-limiting disease.
What does L. pneumoniae parasitize?
Amoebae (Acanthamoeba, Naegleria), and occur in biofilms.
Where does L. pneumoniae occur?
Questions And Answers Graded A+
What is pneumonia?
Inflammation of the lung in which fluid fills the alveoli. Bacteria, viruses and fungi are responsible.
Physicians distinguish community-acquired pneumonia from nosocomial pneumonia.
What will you hear upon auscultation of pneumonic lungs?
Rales
What bacterial agents cause community-acquired pneumonia?
1) S. pneumoniae
2) Legionella pneumophila
3) Mycoplasma pneumoniae
4) Chlamydophila pneumoniae
Is S. pneumoniae normal biota of the upper respiratory tract?
Yes. 5-50% of the population are carriers.
What type of pneumonia does S. pneumoniae cause?
Lobar pneumonia with consolidation
Is there a vaccine to protect against S. pneumoniae lower respiratory infection?
Yes. Pneumococcal polysaccharide vaccine.
What is the morphology of Legionella pneumophila?
G- pleomorph (coccus-filaments) that are poorly staining.
What is the physiology of L. pneumophila?
Obligate aerobes with fastidious nutritional requirements. Require a charcoal yeast-extract medium.
Slow growers.
What is legionellosis?
Legionnaire's disease- early symptoms include dramatic rise in temperature within 24 hours.
Nonproductive cough, vomiting and diarrhea may occur. Later, bronchopneumonia that is frequently
confluent (may resemble lobar). X-ray will show "moth-eaten" regions where fluid has accumulated.
Death (15-20%) is preceded by renal failure, shock and/or respiratory failure.
What is Pontiac fever?
Much less severe illness characterized by short incubation period (hours), fever, heave, dry cough. No
evidence of pneumonia. Self-limiting disease.
What does L. pneumoniae parasitize?
Amoebae (Acanthamoeba, Naegleria), and occur in biofilms.
Where does L. pneumoniae occur?
