Para Lec - A. lumbricoides & T. trichiura Flashcards Preview

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Flashcards in Para Lec - A. lumbricoides & T. trichiura Deck (67):
1

hookworms attach on small intestines via

pith

2

common name of Ascaris lumbricoides

giant intestinal roundworm

3

final host of Ascaris lumbricoides

man

4

habitat of Ascaris lumbricoides

small intestine

5

diagnostic stage of Ascaris lumbricoides

ova (fertilized or unfertilized)

6

infective stage of Ascaris lumbricoides

EMBRYONATED egg

7

sources of infection of Ascaris lumbricoides

STH
soil with contaminated feces

8

MoT of Ascaris lumbricoides

Ingestion

9

Portal of entry of Ascaris lumbricoides

mouth

10

Portal of exit of Ascaris lumbricoides

anus

11

egg with a larva waiting to be hatched

embryonated egg

12

embryonated egg of A. lumbricoides may remain viable for

3 months

13

neglected tropical disease, problem of underdeveloped countries

Ascariasis

14

how much of the world's population is infected with Ascariasis?

1/8th of the world's population

15

largest intestinal nematodes infecting humans

Ascaris lumbricoides

16

obligatory extraintestinal migration of Ascaris lumbricoides causes

eosinophilia

17

lifespan of Ascaris lumbricoides

1-2 years

18

intensity of infection of Ascaris lumbricoides greatest in what age group

children 5-10 years old

19

which helminth requires heart and lung migration to be fully developed

Ascaris lumbricoides

20

Eggs of Ascaris lumbricoides can survive the acidity of small intestine. T or F

T

21

Where does Ascaris lumbricoides release its larva

small intestine

22

where do adult worms of Ascaris lumbricoides live

small intestine

23

number of eggs that a female Ascaris lumbricoides produce per day

200 000 eggs/day

24

how many months required from ingestion of infective eggs of Ascaris lumbricoides to oviposition by the adult F

2-3

25

Where does maturation of worm of Ascaris lumbricoides take place

S.I.

26

Where does the female Ascaris lumbricoides become fertilized

S.I.

27

color of adult worms of Ascaris lumbricoides

creamy white to pinkish yellow

28

describe head of adult worm of Ascaris lumbricoides (2)

trilobate/triradiate lips
small triangular buccal cavity

29

female or male adult worm of Ascaris lumbricoides
tapered at both ends and large (20-35, up to 45 cm)

female

30

female or male adult worm of Ascaris lumbricoides
smaller and slender
curve posteriorly
equipped with copulatory spicule

male

31

what stage of the Ascaris lumbricoides penetrates the intestinal villi

larval stage

32

what stage of the Ascaris lumbricoides invades the lungs

larval stage

33

what stage of the Ascaris lumbricoides is swalloed from the throat

larval stage

34

type of egg in unicellular stage

fertilzed egg

35

egg with developed alrva
found in the environment

embryonated ehh

36

geographic prevalence of a. lumbricoides

highest in warm, wet climates

37

types of soil preferred by Ascaris lumbricoides

loamy, soft soil, shady

38

pre-patency of Ascaris lumbricoides

2 months

39

pathology due to larva of Ascaris lumbricoides may cause ___ (2)

pneumonitis/Loeffler's disease
eosiniphilia

40

in migration stage of of Ascaris lumbricoides, this condition is common

eosinophilia

41

what occurs when an antihelminthic drug is given when the patient has fever

erraticity

42

these remnants may also be seen in of Ascaris lumbricoides infection [related to eosinophilia]

Charcot-Leyden crystals

43

adult phase of ascaris causes [3]

malnutrition
impaired physical growth
mild abdominal discomfort

44

condition caused by adult ascaris
small bowel obstruction (in children, few as 60 worms?)

mild abdominal discomfort

45

infection of gall bladder

cholangitis

46

manifestations of wandering ascaris (in severe infections) [4]

biliary tract infections
pancreatitis
cholangitis
liver abscess

47

2 types of treatment for ascaris

selective and mass

48

more effective treatment for ascaris

mass

49

drug of choice for treatment for ascaris

albendazole x 1 dose

50

mass of ascaris worms in intestines that cause GIT perforations

worm bolus

51

diagnosis of ascaris (types of stool exams) (4)

DFS
Kato
Kato Katz
Brine Flotation Technique

52

Diagnosis of ascaris
more sensitive than dfs

Kato katz/Kato

53

Diagnosis of ascaris
for determining the intensity of infection

kato katz technique

54

Diagnosis of ascaris
uses a hypertonic solution

Brine Flotation Technique

55

Diagnosis of ascaris
has a tendency to damage cells

Brine Flotation Technique

56

ratio for glycerol solution

1 part water
1 part glycerol
1:1

57

materials in kato katz technique

50% glycerol-malachite green solution
wire mesh (60 - 105 mesh)

58

materials in kato katz technique
removes fecal debris

wire mesh

59

use of malachite green

provide contrast

60

other conc techniques aside from brine flotation

zinc sulfate conc. technique
MIFCT
FECT

61

root cause of A. lumbricoides

poverty

62

layers present in corticated fertilized egg

mamillary coat
glycogen layer
vitelline layer

63

layers present in decorticated fertilized egg

glycogen layer
vitelline layer

64

layers present in corticated unfertilized egg

mamillary coat
glycogen layer

65

When will pneumonitis manifest in ascaris

4-16 days after infection

66

Number of worms involved in mild abdominal discomfort

60 worms

67

layers present in decorticated unfertilized egg

glycogen layer

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