Exam 34: Gastrointestinal Infections and Food Poisoning

Although uncommon, what intestinal parasite is known to leave the colon and cause metastatic diseases, especially liver abscesses?

What organism that causes gastroenteritis can be found in aquaculture-farmed fish?

What is the most important cause of iatrogenic diarrhea in adults?

What is the most common cause of travelers' diarrhea?

What type of diarrheal illness has a rapid onset of symptoms after food ingestion (usually <12 hours)?

A physician has requested a stool culture for Yersinia, which of the following would be the most appropriate medium to use?

What is the most common cause of bacterial gastroenteritis in the world?

Disease caused by which of the following organisms has fever, abdominal cramping, diarrhea, and stools with gross blood and pus?

All of these patient history questions will help focus the search for the cause of diarrhea, except:

What organism grows best at 42° C and in a reduced oxygen atmosphere (5% to 10%)?

What is the most significant predisposing factor to Clostridium difficile-associated disease?

What defense mechanism does the colon have to guard against infection?

What common organism invades the full thickness of the bowel with lymphatic spread?

A man and his family drive to the coast and have an oyster dinner. A couple of days later, the man arrives at the emergency department with a fever, bullous skin lesions, and diarrhea. He is extremely ill and appears septic. The microbiologist notices curved gram-negative rods on the stool Gram stain. What is the most probable organism causing this condition?

Presence of red colonies with black centers on xylose-lysine-decarboxylase medium is indicative of

The presence of yellow colonies on thiosulfate-citrate-bile salt-sucrose medium is suggestive of

What types of stools are characteristic of someone who has cholera?

What type of diarrheal illness produces fever, leukocytosis in peripheral blood, and fecal leukocytes?

The urea breath test is a noninvasive test to detect infection caused by

What is the most common cause of death among patients with diarrhea?