Microbiology 14 - Respiratory Tract Infection Flashcards
What pattern of pneumonia is usually produced by streptococcus pneumoniae?
Neatly lobar pneumonia
What pattern of haemolyisis does S. pneumonia show?
Alpha haemolysis
What are the top 2 organisms that can cause CAP?
S. pneumoniae
H. influenzae
What are the 3 most likely organisms to cause CAP in neonates?
E coli
Group B strep
Listeria
What are the 3 most likely organisms to cause CAP in 1-6 month olds?
Chlamydia
S. aureus
RSV
What are the 2 most likely organisms to cause CAP in 6 month - 5 year olds?
Mycoplasma
Influenza
Recall the CURB 65 criteria
Confusion Urea > 7 Resp rate > 30 BP <90 systolic/ <60 diastolic Age > 65
How will a CXR appear in bronchitis?
Normal
How should bronchitis be managed?
Bronchodilators and antibiotics IF bacterial cause (usually viral)
In which patient group is H. influenzae most likely to cause CAP?
Those with a pre-existing lung condition
Which cause of CAP is associated with confusion?
Legionella
What are the typical symptoms and signs of legionella pneumonia?
Confusion
Abdominal pain
Diarrhoea
Hyponatraemia
Why are penicillins ineffective in atypical pneumonia?
Organisms that can cause atypical pneumonia don’t have a cell wall
What are the possible extrapulmonary features of atypical pneumonia?
Hepatitis
Hyponatraemia
What is the biggest risk factor for coxiella burnetti pneumonia?
Exposure to domestic/ farm animals