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27 Cards in this Set
- Front
- Back
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Your patient is a 2-year-old female brought to the clinic on a cold January morning because of fever and dehydration. Her mother reports a one-day history of very frequent diarrhea (watery, no blood), fever, emesis (no blood), lethargy and inability to retain foods or liquids. The mother works so the child attends a day-care facility. Vital signs included a temperature of 39.5°C, pulse rate of 128/min., and 32 respirations/min. Hyperactive bowel sounds are noted on physical examination. The stool samples sent to the laboratory for evaluation were negative for blood or leukocytes. Given this information, what is the most likely cause of this patient’s problem?
A. Giardia B. Entamoeba histolytica C. Campylobacter D. Cryptosporidium E. Rotavirus |
E. Rotavirus
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what is the most common parasitic cause of gastroenteritis?
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Giardia
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compared to viral and bacterial causes of gastroenteritis, how long does a parasite take to start wreaking havoc?
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longer...weeks
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Where do you get Giardia from?
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contaminated water
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where does Giardia attach, what does it do?
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attach to small intestine
cause malabsorption water diarrhea |
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Pt comes in with watery diarrhea, with little to no mucus in it, no blood, and it smells like holy hell and is super greasy. What was the likely cause?
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Giardia
obtained from dirty water |
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pt was hiking in the woods (or has a well) or was at day care...these are buzz words for what parasite?
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Giardia
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Your patient is a 37-year old man who presents with a 2-week history of nausea, profuse watery diarrhea, cramping abdominal pain and approximately 16 pounds weight loss. He has a chronic nonproductive cough and general malaise.
Laboratory tests revealed CD4+ T cells at less than 100/μl. Further history revealed a camping trip with two male friends approximately 2 months ago. Both companions developed a watery diarrhea, that resolved itself after 6 days. |
Cryptosporidium
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because you cannot always find enough of this bug in stool sample, the "String" test must be used to find it...what bug is it?
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Giardia
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what is the infective stage of Cryptosporidium?
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Oocyst
is acid-fast staining |
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Cryptosporidium will affect what type of patients more readily?
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HIV/AIDS
Immunocompromised |
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when oocysts are released in the feces they are IMMEDIATELY infectious. This makes person to person highly likely. What bug is this associated with?
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Cryptosporidium
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a little boy goes to a water park and is splashing and having a total ball. Later he gets wicked nasty diarrhea. What does he likely have? What could have stopped this before he got it?
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Cryptosporidium
Chlorine in H2O would have killed it |
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This bug is similar to cryptosporidium, it causes a watery diarrhea, and has an infectious oocyst. What is it? Where would you get it from?
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Cyclospora
from imported foods (fruit/vegetables) |
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Joan is an uppity biatch. She insists on only having the "finest and most natural food products". As such, she orders bananas from south America directly from a plantation. She ends up getting some nasty watery diarrhea. What got her
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Cyclospora
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A 22-year old Peace Corps volunteer complains of general malaise for several days, fever, cough and pain in right upper quadrant of the abdomen. He has recently returned from a two-year assignment in southern Mexico. Upon questioning, he describes a bout of bloody diarrhea with mucus in the stool and some spasm of the anal sphincter a few weeks ago. Examination revealed a temperature of 40°C, skin pallor, slight jaundice, hepatomegaly and pain on percussion of the right abdomen. Cause?
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Entamoeba histolytica
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World-wide distribution; fecal-oral transmission
Ab pain, fever, tender hepatomegaly Liver abscess these are features of what? |
Entamoeba histolytica
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What bug tends to ingest erythrocytes?
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Entamoeba histolytica
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tropics; HIV; watery diarrhea
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Isospora belli
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ciliated; hogs; dysentery
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Balantidium coli
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unique spore (can inject infectious material); HIV
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Microsporidia species
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Only ciliated parasite that causes infection in humans
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Balantidium coli
associated with pig (look for pig farmer) |
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given the following buzzwords, please list what bug was responsible?
Eosinophilia Liver abscess Blood Diarrhea |
Entamoeba histolytica
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given the following buzzwords, please list what bug was responsible?
Foul-smelling diarrhea Malabsorption Entero "String" Test |
Giardia lamblia
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given the following buzzwords, please list what bug was responsible?
Hog Farmer Bloody Diarrhea |
Balantidium coli
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given the following buzzwords, please list what bug was responsible?
Acid-fast oocyst HIV infection Tropics |
Isospora belli
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given the following buzzwords, please list what bug was responsible?
Acid-fast oocyst HIV |
Cryptosporidium
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