Theme: Infection
A Gram-positive haemolytic cocci
B Facultative anaerobic Gram-negative bacilli
C Aerobic Gram-negative rods
D Gram-positive rods
E Gram-negative cocci
F Immunofluorescent spirochaete
Select the bacterial organism that most closely matches the clinical situation
described below. Each option may be used once, more than once or not at all.
Haemolytic streptococci cause cellulitis and ascending lymphangitis. Prolonged
antibiotic usage leads to the development of membranous colitis due to
Clostridium difficile. Proteus or another gut commensal is the most likely
infection following bowel surgery. Gram-negative rods and pseudomonas
especially contaminate hospital equipment.
Scenario 1
Correct
Cellulitis with ascending lymphangitis
A Correct answer
Gram-positive haemolytic cocci
Scenario 2
Incorrect
Bloody diarrhoea following prolonged treatment with antibiotics
D Correct answer
Gram-positive rods
Scenario 3
Incorrect
A perineal wound infection following abdominoperineal resection
B Correct answer
,Facultative anaerobic Gram-negative bacilli
Scenario 4
Incorrect
A pathogen that causes colonisation of humidifiers and ventilators and opened sterile solutions
C Correct answer
Aerobic Gram-negative rods
Theme: Antimicrobial agents
A Flucloxacillin
B Metronidazole
C Penicillin
D Gentamicin
E Ampicillin
From the list of antibiotics above choose the most suitable treatment for the
following infective agents. Each of the above may be used once, more than once
or not at all.
The choice of the most appropriate first-line antibiotic in surgical infections
should be the best guess for the most likely causative organism. A basic knowledge
of the common sensitivities of various organisms is essential.
Scenario 1
Incorrect
Clostridium perfringens
C Correct answer
Penicillin
Scenario 2
, Incorrect
Bacteroides fragilis
B Correct answer
Metronidazole
Scenario 3
Incorrect
Klebsiella
D Correct answer
Gentamicin
Scenario 4
Incorrect
Streptococcus pneumoniae
E Correct answer
Ampicillin
Theme: Micro-organisms
A Escherichia coli
B Streptococcus pyogenes
C Clostridium difficile
D Staphylococcus aureus
E Haemophilus influenzae
F Clostridium perfringens
G None of the above
A Gram-positive haemolytic cocci
B Facultative anaerobic Gram-negative bacilli
C Aerobic Gram-negative rods
D Gram-positive rods
E Gram-negative cocci
F Immunofluorescent spirochaete
Select the bacterial organism that most closely matches the clinical situation
described below. Each option may be used once, more than once or not at all.
Haemolytic streptococci cause cellulitis and ascending lymphangitis. Prolonged
antibiotic usage leads to the development of membranous colitis due to
Clostridium difficile. Proteus or another gut commensal is the most likely
infection following bowel surgery. Gram-negative rods and pseudomonas
especially contaminate hospital equipment.
Scenario 1
Correct
Cellulitis with ascending lymphangitis
A Correct answer
Gram-positive haemolytic cocci
Scenario 2
Incorrect
Bloody diarrhoea following prolonged treatment with antibiotics
D Correct answer
Gram-positive rods
Scenario 3
Incorrect
A perineal wound infection following abdominoperineal resection
B Correct answer
,Facultative anaerobic Gram-negative bacilli
Scenario 4
Incorrect
A pathogen that causes colonisation of humidifiers and ventilators and opened sterile solutions
C Correct answer
Aerobic Gram-negative rods
Theme: Antimicrobial agents
A Flucloxacillin
B Metronidazole
C Penicillin
D Gentamicin
E Ampicillin
From the list of antibiotics above choose the most suitable treatment for the
following infective agents. Each of the above may be used once, more than once
or not at all.
The choice of the most appropriate first-line antibiotic in surgical infections
should be the best guess for the most likely causative organism. A basic knowledge
of the common sensitivities of various organisms is essential.
Scenario 1
Incorrect
Clostridium perfringens
C Correct answer
Penicillin
Scenario 2
, Incorrect
Bacteroides fragilis
B Correct answer
Metronidazole
Scenario 3
Incorrect
Klebsiella
D Correct answer
Gentamicin
Scenario 4
Incorrect
Streptococcus pneumoniae
E Correct answer
Ampicillin
Theme: Micro-organisms
A Escherichia coli
B Streptococcus pyogenes
C Clostridium difficile
D Staphylococcus aureus
E Haemophilus influenzae
F Clostridium perfringens
G None of the above
