Pneumonia Flashcards
(79 cards)
What is pneumonia?
It refers to infection of the lung tissue, resulting in inflammation and sputum production within the airways and alveoli
What are the two classifications of pneumonia?
Community Acquired Pneumonia (CAP)
Hospital Acquired Pneumonia (HAP)
What is the most common pneumonia classification?
Community acquired pneumonia
What is community acquired pneumonia?
It is defined as pneumonia that is contracted outside of the hospital
What is hospital acquired pneumonia?
It is defined as pneumonia that is contracted within 48 hours or more after hospital admission
Why is it important to distinguish between pneumonia classifications?
The causative organisms vary and therefore the first line antibiotic guidelines are different
What are the seven bacterial organisms associated with pneumonia?
Streptococcus Pneumonia
Haemophilus Influenza
Group B Strep
Staphylococcus Aureus
Mycoplasma Pneumonia
Legionella Pneumophila
Klebsiella Pneumoniae
What is the most common bacterial organism associated with community acquired pneumonia?
Streptococcus pneumonia
What is another term for streptococcus pneumonia?
Pneumococcus
Is streptococcus pneumonia gram positive or gram negative?
Gram positive
What are the four characteristic features of streptococcus pneumonia?
Coccus shaped
Catalase test negative
Partial haemolysis reaction on blood agar
Optochin sensitive
What colour does streptococcus pneumonia present as on blood agar?
Green
What virulence factor is associated with streptococcus pneumonia?
IgA protease
What are the three clinical features associated with streptococcus pneumonia pneumonia?
Rapid onset
Fever
Herpes labialis
What is the second most common bacterial organism associated with community acquired pneumonia?
Haemophilus influenza
Which two patient groups tend to be affected by haemophilus influenza?
COPD patients
Pre-vaccinated/unvaccinated children
Which patient group tend to contract group B streptococcus pneumonia?
pre-vaccinated infants, often contracted during birth from group B streptococcus colonising the vagina
Which patient group tend to be affected by staphylococcus aureus?
Those affected by a recent influenza infection
What are the two signs of staphylococcus aureus pneumonia on CXR?
Pneumatoceles in multiple lobes
Consolidation in multiple lobes
What are pneumatoceles?
They are air-filled cavitary lesions
What is atypical pneumonia?
It is pneumonia caused by an organism that cannot be cultured in the normal way or be detected using a gram stain
Which antibiotic are atypical pneumonia bacteria resistant to? What three alternatives can be administered?
Penicillin
Macrolides
Fluoroquines
Tetracyclines
What five bacteria cause atypical pneumonia?
Mycoplasma pneumonia
Legionella pneumophilia
What are the four clinical features of mycoplasma pneumonia pneumonia?
Dry cough
Autoimmune haemolytic anaemia
Bullous myringitis
Erythema multiform