Microbiology Parasitology - First Aid Flashcards Preview

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Flashcards in Microbiology Parasitology - First Aid Deck (97)
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1

Giardia lamblia disease

Giardiasis: bloating, flatulence, foul-smelling, fatty diarrhea (often seen in campers/hikers)

2

Transmission of Giardia lamblia

cysts in water

3

Diagnosis of Giardia

trophozoites or cysts in stool

4

Treatment for Giardia

Metronidazole

5

Entamoeba histolytica disease

Amebiasis: bloody diarrhea, liver abscess (w/ "anchovy paste" exudate), RUQ pain

6

Transmission of Entamoeba histolytica

Cysts in the water

7

Diagonsis of Entamoeba histolytica

serology and trophozoites (w/ RBCs in cytoplasm) or cysts (w/ up to 4 nuclei) in stool

8

Treatment of Entamoeba histolytica

Metronidazole

(Iodoquinol for asymptomatic cyst passers)

9

Cryptosporidium diesease

severe diarrhea in AIDS
mild disease in immunocompromised

10

Cryptosporidium transmission

oocysts in water

11

Diagnosis of Cryptosporidium

oocysts on acid-fast stain

12

Treatment of Cryptosporidium

prevention by filtering city water
Nitazoxanide in immunocompromised hosts

13

Protozoa that cause GI infections (3)

1. Giardia lamblia
2. Entamoeba histolytica
3. Cryptosporidium

14

Protozoa that cause CNS infections (3)

1. Toxoplasma gondii
2. Naegleria fowleri
3. Trpanosoma brucei

15

Toxoplasma gondii disease

brain abcesses in HIV (ring-enhancing lesions on CT/MRI)
congenital toxoplasmosis (triad of chorioretinitis, hydrocephalus and intracranial calcifications)

16

Transmission of Toxoplasma gondii

cysts in meat or oocysts in cat feces; crosses placenta

17

Diagnosis of Toxoplasma gondii

serology, biopys (tachyzoite)

18

Treatment for Toxoplasma gondii

Sulfadiazine and pyrimethamine

19

Naegleria fowleri disease

Rapidly fatal meningoencephalitis

20

Trasmission of Naegleria fowleri

swimming in freshwater lakes; enters via cribiform plate

21

Diagnosis of Naegleria fowleri

amoebas in spinal fluid

22

Treatment of Naegleria fowleri

Amphotericin B

23

Trypanosoma brucei disease

African sleeping sickness: enlarged LNs, recurring fever, somnolence, coma

24

Transmission of Trypanosoma brucei

tsetse fly (painful bite)

25

Diagnosis of Trypanosoma brucei

blood smear

26

Treatment for Trypanosoma brucei

Suramin for blood-borne disease
Melarsoprol for CNS penetration

27

Protozoa that cause hematologic infections

1. Plasmodium
2. Babesia

28

Plasmodium Disease

fever, HA, anemia, splenomegaly

29

P. vivax/ovale

48 hour cycle (fevers on first and third days)
dormant form (hypnozoite) in liver

30

P. falciparum

severe
irregular fever patterns
parasitized RBCs occlude capillaries in brain (cerebral malaria), kidneys and lungs