Microbes

Question 1

(3) organisms causing CAP

Answer 1

• Streptococcus pneumoniae
• Haemophilus influenzae -> if not vaccinated
• Atypicals

Question 2

What organism (1) apart from usual one, may cause pneumonia in immunocompromised pt?

Answer 2

Immunocompromised = alcoholics, malnourished long term steroids, diabetes

Staphylococcus aureus

Question 3

What organisms apart from usual one, may cause pneumonia in immunosuppressed pt?

Answer 3

Immunosuppressed = HIV with CD4 <200, transplant recipient

pneumocystitis, cryptococcus, MCV, varicella zoster, influenza, fungal infection

Question 4

Organisms (4) causing hospital-acquired pneumonia

Answer 4

• staphylococcus aureus (including MRSA)
• anaerobes
• coliforms
• pseudomonas

Question 5

Colonising bacteria in chronic respiratory diseases (may or may not cause infection = exacerbation)

Answer 5

• Streptococcus pneumoniae
• Haemophlus influenzae
• moraxella catarrhalis
• staphylococcus aureus
• pseudomonas

Question 6

Organisms causing URTI (4)

Answer 6

• Steptococcus pneumoniae
• streptococcus pyogens
• heamofphilus influenzae
• moraxella catarrhalis

Question 7

Organisms causing cavitating pneumonia (5)

Answer 7

• Streptococcus Pneumoniae
• Staphylococcus Aureus
• Klebsiella
• TB
• Anaerobes

Question 8

What organisms cause intra-abdominal infections (including biliary)

Answer 8

• anaerobes
• coliforms
• enterococcus

Question 9

What infections does group A streptococcus cause?

Answer 9

• scarlet fever
• skin
• Rh fever
• post-strep glomerulonephritis
• strep throat
• necrotising fascitis
• strep toxic shock

Question 10

What infections does group B streptococcus cause?

Answer 10

• vaginal colonisation
• neonatal infection