Gram Negative Bacteria Flashcards
Gram Negative Bacteria
a) Enterococci are part of the normal skin flora
b) Streptococci and Enterococci appear as gram positive cocci in clusters
c) Streptococci and Enterococci give a negative result on the catalase test
d) Alpha haemolysis means complete haemolysis on blood agar
e) In bacteraemia with viridans streptococci, consider infectious endocarditis
a) F
b) F
c) F
d) F
e) T
Gram Positive Infection:
a) Streptococcus pneumoniae is a beta haemolytic streptococcus
b) Streptococcus pyogenes is also known as “GAS”
c) In Lancefield grouping, group B means ‘beta hemolytic’
d) Streptococcus agalactiae is known as group B beta haemolytic streptococcus
e) Enterococci are Lancefield group D
a) F
b) T
c) F
d) T
e) T
Gram Positive Infection:
a) The Streptococcus anginosus group used to be called Streptococcus milleri
b) Streptococci are usually resistant to penicillin
c) Resistance to penicillin in streptococci is due to beta lactamase
d) Large colony beta haemolytic streptococci are usually susceptible to penicillin
e) Erythromycin resistance is an increasing problem in streptococci
a) T
b) F
c) F
d) T
e) T
Gram Positive Infection:
a) Streptococcus pyogenes is the main bacterial cause of pharyngitis
b) Streptococcus pyogenes is a major cause of skin and soft tissue infection
c) Acute Rheumatic Fever is a sequelae of Streptococcus pyogenes pharyngitis
d) The F protein is a major virulence factor in Streptococcus pyogene
e) Scarlet fever is caused by Streptococcus agalactiae
a) T
b) T
c) T
d) F
e) F
Gram Positive Infection:
a) Erysipelas is caused by Enterococci
b) Clindamycin has a role in toxin mediated syndrome
c) Surgery to remove dead and dying tissue is an outdated management
d) Non-suppurative complications of GAS (Group A Streptococcus) infection are due to haematogenous spread
e) Glomerulonephritis is a non-suppurative complication of GAS infection
a) F
b) T
c) F
d) F
e) T
Gram Positive Infection:
a) The revised Jones Criteria are used to diagnose Acute Rheumatic Fever
b) Acute Rheumatic Fever (ARF) typically causes carditis and polyarthritis
c) The pathogenesis of Acute Rheumatic Fever involves molecular mimicry
d) Acute Rheumatic Fever is a disease of wealthy populations
e) Rheumatic heart disease is the only residual morbidity from Acute Rheumatic Fever
a) T
b) T
c) T
d) F
e) T
Gram Positive Infection:
a) Damaged heart valves predispose to infectious endocarditis
b) Treatment of GAS pharyngitis for 10 days with oral penicillin prevents ARF
c) Acute Rheumatic Fever is commonest in people over 30 years old
d) The pancarditis associated with ARF includes infectious endocarditis
e) Repeated GAS pharyngitis can result in repeated ARF
a) T
b) T
c) F
d) F
e) T
Gram Positive Infection:
a) Group B beta haemolytic streptococcus (Gp B BHS) can be treated with penicillin
b) Group B BHS is also known as streptococcus agalactiae
c) A vaccine is used to protect neonates from Group B BHS
d) The risk of infection with Group B BHS is higher in premature babies
e) Vaginal carriage of Group B BHS is about 90%
a) T
b) T
c) F
d) T
e) F
Gram Positive Infection:
a) Prophylactic antibiotics in labour are used to prevent neonatal sepsis with Group B BHS (Beta-Haemolytic Strep)
b) Group B Beta-Haemolytic Strep. only causes infections in neonates
c) Vaginal carriage of Group B Beta-Haemolytic Strep. is persistent so once a carrier, always a carrier
d) Early onset disease refers to maternal infections with Group B Beta-Haemolytic Strep early in labour
e) Late onset disease refers to neonatal sepsis with Group B Beta Haemolytic Strep a few weeks after delivery
a) T
b) F
c) F
d) F
e) T
Gram Positive Infection:
a) Streptococcus bovis is Lancefield Group D
b) Enterococcus spp. are treated with cephalosporins
c) Enterococcus spp. are a cause of infectious endocarditis
d) Enterococcus spp. are normal gut flora
a) T
b) F
c) T
d) T
Gram Positive Infection:
a) Enterococcus spp. cause urinary tract infections
b) Enterococcus spp. cause healthcare associated infections
c) VRE stands for “vancomycin resistant enterococcus”
d) Enterococcal endocarditis is treated with ampicillin monotherapy
e) Enterococci are gram positive cocci
a) T
b) T
c) T
d) F
e) T
Gram Positive Infection:
a) Streptococcus bovis bacteraemia is usually due to urinary tract infections
b) S. bovis bacteraemia is associated with endocarditis
c) S. bovis bacteraemia is associated with colonic cancer
d) S. infantarius used to be called S.bovis
e) S. gallolyticus and S. pasteurianus used to be called S.bovis
a) F
b) T
c) T
d) T
e) T
Gram Positive Infection:
a) Streptococcus pneumoniae is a beta haemolytic streptococcus
b) Streptococcus pneumoniae has an anti-phagocytic capsules
c) Streptococcus pneumoniae can be classified by capsular serotypes
d) Vaccines against Streptococcus pneumoniae contain multiple capsule types
e) Pneumolysin is a virulence factor found in Streptococcus pneumoniae
a) F
b) T
c) T
d) T
e) T
Gram Positive Infection:
a) Risk factors for Streptococcus pneumoniae include young age and overcrowding
b) Hyposplenism is a risk factor for infection with Streptococcus pneumoniae
c) Streptococcus pneumoniae causes pneumonia and meningitis
d) In pneumonia, sputum cultures are usually positive for Streptococcus pneumoniae
e) In pneumonia, a Streptococcus pneumoniae antigen detection test is done on sputum
a) T
b) T
c) T
d) F
e) F
Gram Positive Infection:
a) Streptococcus pneumoniae appears as a draughtsman colonies on blood agar
b) Streptococcus pneumoniae is resistant to optochin
c) In Streptococcus pneumoniae resistance to penicillin is mediated by beta lactamases
d) Empirical therapy of meningitis with Streptococcus pneumoniae is high dose penicillin
e) The polysaccharide vaccine is part of the National Childhood immunisation programme
a) T
b) F
c) F
d) F
e) F
