Respiratory Bench

Question 1

What swabs are best for culture
What swabs are best for PCR

Answer 1

Calcium alginate - optimal for culture
Dacron or rayon swabs on plastic shafts - preferred for nucleic based testing

Question 2

Cotton swabs should not be used because they kill

Answer 2

kills Bordatella

Question 3

Primary cause of bacterial pharyngitis-

Answer 3

Group A strep
S. Pyogenes

Question 4

S. Pyogenes / Group A strep hemolysis

Answer 4

Beta

Question 5

less common cause of pharyngitis often febrile and complain of sore throat

Answer 5

C. Diptheriae

Question 6

Hallmark for diphtheria-

Answer 6

presence of exudate or gray-white membrane

Question 7

Leukens traps are collected when the patient

Answer 7

Can’t produce sputum on their own

Question 8

Routine plates - for Neisseria and Haemophilus

Answer 8

SBA & MAC, Choc

Question 9

BCYE grows

Answer 9

Legionella, Francisella, Nocardia; 3-5 days at 35°

Question 10

Reagan Lowe - grows

Answer 10

Bordatella pertussis

Question 11

Choc or MTM; 24-48 hrs; tan or brown colonies

Answer 11

Neisseria

Question 12

Report all beta hemolytic Strep EXCEPT l

Answer 12

group F, B & non typeable strains

Question 13

Group G Strep - do gram strain to rule out

Answer 13

Arcanobacterium

Question 14

Arcano =

Answer 14

cat neg, curved GPR, causes pharyngitis, incidental finding

Question 15

3 most common oral florall

Answer 15

: Capno, Moraxella, Eikenella

Question 16

Most common S.pyo infection in children -

Answer 16

acute glomerulonephritis

Question 17

= ALWAYS considered a pathogen in respo specimen and in any quantity

Answer 17

S.pyogenes