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Diseases of PNS

Question
8 out of 38
 

Common organisms causing sinustitis: ,[LQ]



A Pseudomonas

B Moraxella catarrhalis

C Streptococcus pnenumoniae

D Staphylococcus epidermidis

E H. Influenzae

Ans. B C and E Moraxella, Streptococci and H. influenzae

Ref. Harrison 17th/ed p 205; Scott Brown 7th/ed Vol 2 p 1441; Mohan Bansal p 299

According to Harrison 17th/ed p 205

"Among community-acquired cases, S. pneumoniae and nontypable Haemophilus influenzae are the most common pathogens, accounting for 50-60% of cases. Moraxella catarrhalis causes disease in a signigicant percentage (20%) of children but less often in adults. Other streptococcal species and Staphylococcus aureus cause only a small percentage of cases, although there is increasing concern about community strains of methicillin - resistant S. aureus (MRSA) as an emerging cause:'

According to Nelson 18th/ed,pp 1749,1750

"The bacterial pathogens causing acute bacterial sinusitis in children and adolescents include Streptococcus pneumoniae (= 30%), nontypable Haemophilus influenzae (=20%):'

According to scotts Brown 7th/ed, p 1441

• M/C Organism causing sinusitis in adults is also Streptococcus pneumoniae followed by H. influenza. In children:

• M/C is Streptococcus pneumoniae (30-43%) followed by both H. influenza and Moraxella catarrhalis (20-28% each)

Diseases of PNS Flashcard List

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