Microbiology 7S RTIs Flashcards
what does a double heart border/ Sail sign on CXR suggest
Left lower lobe collapse
3 results on investigation which point towards S.pneumonia
Alpha haemolytic (green)
Optochin sensitive
High virulence
gram +ve cocci
Clinical features classically seen in Strep pneumonia
Rusty coloured sputum
Lobar pneumonia
Name a high virulent and low virulent Streptococcus strain
High virulence: Strep pneumonia
Low virulence: Strep viridans
most common cause of CAP
S.pneumonia
Main organisms involved in cAP
S.pneumonia Haemophilus influenza Klebsiella mORAXella S.aureus
4 main organisms causing atypical pneumonia
Legionella
Mycoplasma
Coxiella burnetii (Q fever)
Chlamydia
2 features of Coxiella burnetii (Q fever)
faRM ANImals
Hepatitis
splenomegaly, rash, haemolytic anaemia, bird exposure
Chlamydia psittaci
3 organisms which often cause cavitating lesions on CXR
S.aureus
TB
Klebsiella
3 most common causative organisms of pneumonia in 1-6 month old?
Chlamydia trachomatis
RSV
S.aureus
CURB-65?
Criteria for admission
Confusion Urea >7mmol/L RR >30 BP <90/60 <65 years
1 = oral amoxicillin at home 5 days 2 = consider admission 3-5 = SEVERE, admit +/- ITU co-amox + clari
what is the definition of bronchitis?
Inflammation of medium sized vessels
CXR in bronchitis
NORMAL
cause of pneumonia in pt with pre-existing lung disease + smoker, gram negative coccobacili
H.influenza