ID: Spirochette/Chlamydial/Rickettsial infections Flashcards Preview

Unit 6: Pathology > ID: Spirochette/Chlamydial/Rickettsial infections > Flashcards

Flashcards in ID: Spirochette/Chlamydial/Rickettsial infections Deck (22)
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1
Q

aortic tree bark appearance

A

syphilis

2
Q

pannus apperance of scar in cornea

A

Trachoma

Chlamydial infection

3
Q

Chlamydial infection transmitted birds to humans?

A

C. psittaci

4
Q

Rickettsial infections can be divided into..

A
  1. spotted fever group

2. typhus group

5
Q

agent in rocky mount spotted fever? what vector transmits it?

A

rickettsia ricketti

tick bites

6
Q

describe the rash in RMSF

A

petechial and purpuric

7
Q

what medication for RMSF

A

doxy

8
Q

what is the agent in louse borne typhus

A

rickettsia prowazekii

9
Q

if R. prowazekii goes latent, what infection can it produce many years later?

A

recrudescent disease (brill zinsser disease)

10
Q

what is weil disease

A

icterohemorrhagic leptospirosis

severe form with jaundice and azotemia from liver and kidney dysfunction, fever, hemorrhage and anemia

11
Q

how could you visualize treponems in a painless chancre from primary syphilis

A

dark field microscopy

12
Q

what lesion is characteristic of secondary syphilis

A

condylomata lata

13
Q

what is argyll robertson pupil and hen is it seen

A

constricts with accommodation but not reactive to light

tertiary syphilus

14
Q

baby is born with rhagades what are these and what disease. what else can you see in these babies

A

linear scars at angle of mouth seen in congenital syphilis

saddle nose, notched (hutchinson) teeth, mulberry molars, short maxilla, saber shins,

15
Q

what state are you most likely to see RMSF in

A

north carolina

16
Q

how does rash spread in RMSF

A

starts on wrists and ankles and spreads to trunk, palms and soles

17
Q

describe the rash in endemic louse born typhus

A

rash starts centrally and spreads out, sparing palms and soles

“Rickettsii on the wRists, Typhus on the Trunk

18
Q

what is the most common cause of culture negative endocaritis

A

coxiella burnetti

Q fever

19
Q

chlamydial trachomatis serotypes A, B and C cause what disease

A

chronic infection causes blindness due to follicular conjuctivitis in AFrica

20
Q

chlamydial trachomatis serotypes D-K cause what disease

A

STD

urethritis/PID, ectopic prego, neonatal pneumonia with eosinophilia

21
Q

chlamydial trachomatis serotypes L1, L2, L3 cause what disease

A

lymphogranuloma venereum

small painless ulcers on genitals and swollen painful inguinal lymph nodes that ulcerate (buboes)

22
Q

tell me about what the titers are in mycoplasma pneumoniae

A

high titer of cold agglutinins (IgM) which can agglutinate or lyse RBCs