Flashcards in Microbiology 4 - Respiratory tract infection Deck (43)
What is the most likely causative organism in a young patient with a lower lobe pneumonia, raised WCC and CRP?
Recall the appearance of streptococcus in culture
Gram positive cocci in chains
Recall how streptococcus is identified in the lab
Demonstrates alpha haemolysis
What is the most common pathogen implicated in CAP?
Is streptococcus gram pos or gram neg?
Recall the 2 pathogens that can cause typical CAP
Which investigation are indicated in suspected CAP?
FBC, U&E, CRP, LFT
Blood cultures, sputum MC&S
What severity score can be used to score CAP?
BP (<90 systolic)
Score 2 or above = admit
What is bronchitis?
Inflammation of medium sized airways
How does bronchitis appear on CXR?
How do haemophilus influenzae appear under the microscope?
Gram neg cocco-bacilli
On what sort of agar should H influenzae be cultured?
What colour sputum is produced in Strep pneumoniae?
Which type of atypical pneumonia is associated with hyponatraemia?
What is the special culture required for legionella?
Buffered charcoal yeast
What extrapulmonary features are likely in atypical pneumonia?
Which type of pneumonia is associated with confusion, abdo pain and diarrhoea?
Which type of pneumonia is spread by birds?
What is an empyema?
A collection of pus in the pleural cavity, gram-positive, or cultured from the pleural fluid
What are the key features of TB pneumonia?
Recall 2 stains that can identify TB
How can upper and lower respiratory flora be differentiated?
Which type of pneumonia is common in the immunosuppressed (eg people who have had TB, HIV)?
Recall 4 symptoms of pneumocystis pneumonia
Recall the typical CXR finding in pneumocystis pneumonia
What is the most likely cause of pneumonia when there are interstitial changes on CT, neutropaenia and a history of ABx treatment?
This is particularly associated with prolonged ABx use - if ABx hasn't worked it may have a fungal cause
Which type of LRTI is more common in people who have had a BM transplant?
Which pneumonia pathogens can be tested for in urine?
Which type of atypical pneumonia are those who work around farm animals at increased relative risk of?