Blood and Tissue Protozoa - T. cruzii Flashcards
1
Q
Blood and tissue protozoan
All 4 forms (APET)
AMASTIGOTE
PROMASTIGOTE
EPIMASTIGOTE
TRYPOMASTIGOTE
A
Trypanosoma cruzii
2
Q
Transmission of T. cruzii
A
FECES of REDUVIID BUG (kissing bug, triatoma, cone nose or assassin bug) deposited in a PAINLESS bite
3
Q
Infective stage of T. cruzii
A
Metacyclic trypomastigote (epimastigote)
4
Q
Diagnostic stage of T. cruzii
A
Trypomastigote
5
Q
Most frequently and severely affected tissue
A
CARDIAC MUSCLES (myocytes)
6
Q
CHAGAS DISEASE/AMERICAN TRYPANOSOMIASIS
A
ACUTE PHASE
- facial edema
- nodule, CHAGOMA
- fever, lymphadenopathy, hepatosplenomegaly
- ROMANA SIGN
CHRONIC FORM
- MYOCARDITIS, dilated cardiomyopathy w/ apical atrophy
- MEGACOLON, MEGAESOPHAGUS (2nd achalasia)
- death - usually d.t. cardiac arrhythmias or CHF
7
Q
subcutaneous inflammatory nodule
A
CHAGOMA
8
Q
unilateral palpebral swelling
A
ROMANA’S SIGN
9
Q
Treatment of Chagas Disease
A
ACUTE
- Nifurtimox
- Benznidazole