Parasites Flashcards
What are the 3 protozoa that cause GI infections?
Giardia lamblia (cysts in water)
Entamoeba histolytica (cysts in water)
Cryptosporidium (oocytes in water)
Trophozoites or cysts in the stool of a camper with fatty, foul-smelling diarrhea is indicative of what?
Giradia - Metronidazole
Trophozoites with RBCS in the cytoplasm found in the stool of a patient with bloody diarrhea, liver abscess and RUQ pain is indicative of what?
Entameoba histolytica
What is this?
Entamoeba histoltyica - Metronidazole
Brain abscess in HIV - ring enhancing lesions - is indicative of what disease? How is it transimted?
Toxoplasma gondii - cysts in meat or oocytes in cat feces
Sulfadiazine + pyrimethamine
What does congenital toxo look like?
Chorioretinitis
Hydrocephalus
Intracranial calcification
How might you contract naegleria fowleri
Swimming in freshwater lakes - enters thru cribiform plate
Rapidly fatal meningoencephalitis
Amphotericin B
A person with enlarged LN, recurring fever progressing to somnolence and coma is indicative of what?
Trypanosoma brucei = African Sleeping Sickness
Tsetse fly - blood smear
Suramin - blood borne
Melarsoprol - CNS
What does this patient have? What are possible sequelae?
Trophozoite rings - Plasmodium
Occulde capillaries in brain, kidneys, lungs
How do you treat plasmodium?
Chlorquine: Meflloquine or atovoquone/progaunil if resistant
+ Primaquine for hypnozoite
What does a patient with fever and hemolytic anemia and this blood smear have? How did they get it? How do you treat it?
Babesia - Ixodes tick
Atovaquone + Azithromycin
“maltese cross and ring form”
What is a patient with T. cruzi at increased risk for developing?
Dilated CM
Megacolon
Achalasia
What does this patient have? How did they get it? How do you treat it?
Chagas disease - T cruzi
Reduvid bug
Benznidazole or nifurtimox
A patient with these macrophages, spiking fevers, HSmegaly, and pancytopenia is infected with what?
Leishmania donovani - Sandfly
Amphotericin B
Mφ containing amastigotes
A patient with vaginitis: foul-smelling, greenish discharge, and strawberry cervix has what? How did they get it? How do you treat it?
Trichomonas vaginalis
STD - can’t exist outside humans - can’t form cysts
Metronidazole patient and partner
