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Giardia lamblia

Giardia lamblia


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High Yield Notes
6 pages

Giardia lamblia

13 flashcards

USMLE® Step 1 style questions USMLE

3 questions

USMLE® Step 2 style questions USMLE

2 questions

A 25-year-old man who has recently returned from a camping trip comes to your office complaining of severe diarrhea. He hasn’t noticed any blood in the diarrhea, but it has been very oily. He doesn’t remember being bitten by anything during his weekend trip to the Sierra Mountains. He has no known drug allergies and an unremarkable medical history. Which of the following would you most likely see on a stool ova and parasite test?

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External References
Giardia lamblia is a flagellated protozoan parasite that colonizes and reproduces in the small intestine, causing giardiasis. It occurs classically in campers and hikers who present with bloating, flatulence, and a foul-smelling, fatty diarrhea after drinking water contaminated with Giardia cysts. Metronidazole is the drug of choice for giardiasis. Gut IgA, secreted by plasma cells, protects against giardiasis (and other gut infections).