gis156 slide infeksi parasit usus pada manusia
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8/11/2019 Gis156 Slide Infeksi Parasit Usus Pada Manusia
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INFEKSI PARASIT USUS PADA
MANUSIA
Departeman ParasitologyFK USU
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Enterobiasis
Etiology:Enterobius vermicularis(Oxyuris vermicularis/ pin worm/ thread worm/
.
Habitat:
Large intestine (caecum and appendix).Sometimes in ascending colon and ileum.
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Route of infection:
1. Ingestion infectious egg2. Direct transfer/Autoinfection
3. Retroinfection4. Inhalation : contaminated and airbone
transmission
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Life cycle
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Pathofisiology
The adults are mainly located in the caecalregion and female deposits her eggs on theanus and perianal skin usually at night.
The sticky, gelatinous substance in which theova are deposited and the movements of thefemale worm cause perianal pruritus.
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Pathofisiology
Adult worms undergo ectopic migration andmay enter the female genital tract. Inside theuterus or fallopian tube they may becomeencapsulated and produce symptoms of
sa p ng s.
The parasite may also become lodged in thelumen of the appendix leading to appendicitis.
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Diagnosis
1. Anal swab ( N.I.H swab )2. Suspected in children with perianal itching and
scratchin , slee lessness and restlessness..
3. Typical egg shape in feces, nail clipings, bedlinen
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Prevention
Treat all family members. Personal grooming clean and short fingernails.
Personal h iene wash hands before eatin and
after defecation. Frequent washing of bedlines and clothes with soap
and water.
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Taeniasis
Ethiology : T. saginata and T solium
Habitat : small intestine, yeyunum
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Taenia saginata
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Mode of transmision
Ingestion of raw or insufficiently cookedpork harboring cysticercus
.
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Life cycle
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Pathofisiology Tertelan telur : cysticercosis
Tertelan larva : taeniasis
Taeniasis solium : autoinfeksi
Gejala : ringan
Pada manusia : taeniasis solium
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Diagnosis
QDP (Questionaire DemonstartionProglottid)
Motile ro lottid in feces
Anal swab
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Prevention
Personal hygiene Avoid consuming raw or unproperly cooked
Treatment of infected person
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Amoebiasis
Ethiology : E. histolytica- trophozoit : invasive form-cyst : infective form
Habitat : large intestine
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Transmision
Ingestion of the mature quadrinucleate cysts.Trophozoites play no role in transmission.
Direct person to person transmision
Contamination of food
Via flies and cockroaches
Sexual transmision
Animal reservoir
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Pathofisiology
E. histolytica frequently lives as acommensal in the lumen of the largeintestine without causing disease.
ay nva e e co on wa , pro uceulcerations and intestinal symptoms,and migrate via the blood stream tothe liver, where it produces hepatic
abcesses.
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Pathofisiology
Infection by E. histolytica is mostlyasymptomatic.
- n er cer a n c rcu ance nvo v ng e
host and parasite factors, E.
histoytica becomes invasive.
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Diagnosis
Stool : fresh specimen
- Direct examination
- Concentration technique- Culture
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