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PARASIT > Trichinella Spiralis > Flashcards

Trichinella Spiralis Flashcards

1
Q

Common name:

A

Trichina worm

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2
Q

Main habitat

A

Small intestine, skeltal muscles

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3
Q

Rarely seen in —— and any ——- because they are lodged in the ——?

A

Stool; materials; muscle

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4
Q

First found in the muscle of patient that was autopsied by

A

Peacock in London 1828

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5
Q

first investigator to describe and name
the insisted larvae

A

Richard owen 1835

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6
Q

3 sub sp that infects man

A

T. s spiralis
T.s nativa
T. s nelsoni

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7
Q

T. s spiralis is found in?

A

Temperate regions

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8
Q

T. s nativa is found in?

A

Arctic region

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9
Q

T. s nelsoni is found in?

A

Africa

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10
Q

Disease caused by T. spiralis?

A

Trichinosis
Trichiniasis
Trichinellosis

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11
Q

Distinguishing characteristis of larvae?

A

spear-like burrowing tip at its tapering anterior end

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12
Q

the digestive tract of a mature larvae insisted in a muscle fiber
resembles that of an adult worm

A

Trichinella spiralis spi

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13
Q

Stage of T. spiralis that is rarely seen in stool or any material

A

Adult stage

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14
Q

Phase! Small intestinal edema and inflammation

A

Intestinal phasw

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15
Q

Can also be known as the incubation/ intestinal invasion

A

INTESTINAL PHASE

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16
Q

——in severe case can also be found as well as —— and ——

A

Splenomegaly; gastric and intestinal hemorrhages

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17
Q

Aka larval migration and muscle invasion

A

Migration phase

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18
Q

Happens up to the 6th week of infection with the following signs
and symptoms:

A

Migration phase

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19
Q

Edema of the eyes and face

A

Migration phasw

20
Q

Eosinophilia (15-40% for 1 month)

A

Migration phasw

21
Q

What week does it cause death?

A

4th to 8th week

22
Q

Phase: Acute local inflammation

A

Muscular phase

23
Q

Edema and pain of musculature

A

Muscular phasw

24
Q

Edema and pain of musculature
 Larval encystation

A

Muscular phasw

25
Q

In how many days after larva, invasion does muscle fibers becomes edematous and spindle shape

A

3-4 days

26
Q

Basophilic degeneration

A

Muscular phase

27
Q

Predominatiing symptoms

A

EOMSG
:

 Eosinopjilia
 Orbital edema
 Muscular pain and tendernedd
 Shallow and painful breathing
 General weakness

28
Q

Fever, weakness, pain and other symptoms start to abate.

A

Encapsulation phase

29
Q

Full recovery is expected in this phase since trichinellosis is a
self-limiting disease.

A

Encapsulation phase

30
Q

What signs may arise that can lead to brain damage and may persist?

A

Protean neurological sign

31
Q

Phase: signs may arise that can lead to brain damage and may persist.

A

Encapsulation phase

32
Q

Most definitive muscle exam

A

Muscle bipsy

33
Q

Muscle biopsy digested with

A

Pepsin hydrochloride

34
Q

Samples should be taken at

A

3rd or 4th week of infection

35
Q

Use antigen preparation of Trichinella larva
 Observe after 30 minutes
 (+) result: large elevated swelling at the site of injection

A

BIT
BACHMAN INTRADERMAL TEST

36
Q

This is done when meat is suspected of harboring the existed larvae of trichinella and feeding the meat to the albino rats.

A

Beck’s xenodiagnosis

37
Q

Observation is done 14 days after inoculation for the presence of female worm in the duodenum, and larvae in the muscles of the experimental animal.

A

Beck’s xenodiagnosis

38
Q

This would provide the confirmatory diagnosis but the problem with this one is that there is a late rise of the antibody titers which usually commences 3-4 weeks after a light infection.

A

Serodiagnosis

39
Q

Elimination of encysted larva in hogs through freezing at

A

-30 degrees celsius for 24 hr

40
Q

Requires 2 hosts in order to complete the life cycle

A

Blind alley cycle

41
Q

Infective stagw

A

Encysted larvae

42
Q

At birth size

A

80-120um and higly coiled

43
Q

T. spiralis size when it enters the muslce fibers

A

900-1000um

44
Q

T.spiralis vulva is found at the?

A

Anterior fifth

45
Q

T.spiralis female can live up to how many days?

A

30 days

46
Q

T.spiralis female is capable of producing how many larvae in her lifetime?

A

1500 larvae

47
Q

Cough, pleural pains

A

Migration phase

PARASIT (29 decks)

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