Tick Borne Flashcards Preview

ICM Infectious Disease > Tick Borne > Flashcards

Flashcards in Tick Borne Deck (40):
1

Organism behind Lyme disease?

Borrelia burgdorferi

2

Vector for lyme disease>

Deer tick

3

Organism behind RMSF?

Rickettsia rickettsii

4

Vector for RMSF?

Dog Tick

5

Organism behind ehrlichiosis?

Ehrlichia chafeensis

6

Vector for Ehrlichiosis?

Lone star tick

7

Stage 1 of Lyme disease?

Localized rash 3-32 days

8

Stage 2 of Lyme disease?

Disseminated, cranial neuritis, skin lesions, meningitis

9

Stage 3 Lyme disease?

Knee joint arthritis, encephalopathy, polyneuropathy, acrodermatitis

10

Causes of CN 7 palsy?

Idiopathic (Bell's Palsy), Herpes simplex virus (no rash), Herpes Zoster (vesicles in external auditory canal), and Lyme disease

11

What will you see in Chronic Lyme Disease?

Pain syndrome, chronic fatigue, and neurocognitive symptoms

12

Treatment of Lyme Disease?

Doxycycline

13

How to you test for LD?

IgM and IgG serologic testing

14

What vaccines are there for LD?

None for humans, canine vaccine is available

15

What in the body does RMSF ticks go for?

Vascular endothelial cells

16

Pathophysiology of RMSF?

Vasculitis, Hypoatremia, and thrombocytopenia

17

Classic triad of RMSF?

Fever, rash, and history of tick exposure

18

How does the rash progress?

Starts as merciless, progresses to vasculitic rash involving palms and soles with petechiae

19

What lab tests are done to diagnose RMSF?

Thrombocytopenia (low platelets)
Hypoatremia (low sodium)

20

What tests can you do to test for RMSF?

Skin biopsy of lesion and serologic testing of IgM and IgG

21

How do you treat RMSF?

Doxy except in pregnant women then use chloramphenicol

22

What makes adult female of lone star tick easy to distinguish?

Big white spot

23

Incubation period of Ehrlichiosis?

8 days

24

Symptoms of Ehrlichiosis?

Fever, headache, myalgia

25

What lab findings will you see in Ehrlichiosis?

Leukopenia, thrombocytopenia, and elevated transaminases

26

How do you treat Ehrlichiosis?

Doxy

27

What causes Malaria?

Plasmodium species

28

What vector causes Malaria?

Anopheles mosquito

29

Which Plasmodium cause the most severe disease?

P. Falciparum

30

What do Plasmodium sporozoites target?

Hepatocytes

31

What causes hemolytic anemia in Malaria?

Lysing of RBC and release of merozoities to infect more

32

Which strains can produce dormant hypnozoities?

Vivax and ovale

33

What signs suggest Falciparum?

Seizures

34

What signs suggest vivid or ovale?

Paroxysmal chills, fever, rigors

35

What should turn your diagnosis away from Malaria?

Rash

36

What do thin and thick blood smears allow for?

Evaluation of ring forms and estimation of parasite load

37

What does thick blood smear do?

Concentrates parasites and increases diagnostic sensitivity

38

How do you treat non-falciparum malaria?

Chloroquine

39

How do you treat Falciparum?

Chloroquine if sensitive, Arteminsin preferred if Chloro is questioned

40

Why don't you use Mefloquine for prophylaxis

CNS side effects