MCQs on Campylobacter spp and Helicobacter spp
1. A 25 year old male arrives at the emergency room with a two-day history of gastrointestinal symptoms. He reports severe abdominal cramps, frequent watery diarrhea, nausea, vomiting, and a low-grade fever. He also mentions that he has had occasional blood in his stool. His symptoms have progressively worsened, and he is becoming dehydrated.
Upon examination, John appears tired and dehydrated. His temperature is 100.8°F, heart rate 110 bpm, blood pressure: 100/70 mm Hg, respiratory rate 20 breaths/min. Abdominal tenderness and cramping, and hypotension is observed. The patient has no known underlying medical conditions. He mentions that he has been eating at a local restaurant everyday for last four days.The healthcare team performs various diagnostic tests. Blood tests reveal elevated white blood cell count (indicative of infection), and electrolyte imbalances. Stool culture identifies Campylobacter coli as the causative agent of the infection.
2) Campylobacter jejuni is a microaerophilic bacteria, which of the following statement is true about the oxygen requirement for the culture and islolation of the bacteria?
a) An atmosphere of O2 (10%) with added CO2 (5%)
a) Campylobacter jejuni
b) Campylobacter ureolyticus
c) Helicobacter pylori
d) Helicobacter fennelliae
6) What is the most common transport medium used for stool specimen collected from gastroenteritis infection?
7) Helicobacter pylori is associated with all of the following infections, EXCEPT?
a) Burkitt lymphoma
c) Malt lymphoma
8) What environmental conditions, including gas composition, are typically required for the incubation of culture plates to recover Helicobacter spp.?
9) What type of colonies are typically observed on culture plates after 4 to 7 days of incubation for Helicobacter spp.?