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Para > 3-3 Blood Nematodes > Flashcards

3-3 Blood Nematodes Flashcards

1
Q

causes lymphatic filariasis

A

w. bancrofti

b malayi

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2
Q

onchocerciasis

A

o. volvulus

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3
Q

restricted to some islands of indonesia

A

b timori

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4
Q

larvae migrate to site and there they produce____

A

micrfilariae

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5
Q

resides in nodules in subcutaneous tissues

A

o. volvulus

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6
Q

resides in body cavities

A

m/ perstans

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7
Q

resides in subcutaneous tissues

A

loa loa, ozzardi

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8
Q

female worms produce microfilariae and circulate in the blood except for??

A

VS– volvulus and streptocerca – skin

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9
Q

arthropod for:

  1. volvulus
  2. malayi and bancrofti
  3. ozzardi
  4. loa loa
A
  1. black flies (simulium)
  2. mosquitoes
  3. midges and blackflies
  4. deerflies (chrysops)
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10
Q

slow maturation

A

onchocerca

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11
Q

adult bancrofti produces microfilariae that are?

A
  • sheated

- nocturnal periodicity

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12
Q

infective stage of all?

A

L3 filarial larvae

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13
Q

diagnostic stage?

A

microfilariae

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14
Q

(brugia malayi)humans exhibit microfilarialemia w highest numbers at 12nn-8pm

A

subperiodic

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15
Q

vector of brugia malayi

A

aedes

mansonia

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16
Q

diseases caused by malayi and bancrofti

A

acute fever

  • lymphatic inflammation
  • TPE
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17
Q

malayi vs bancrofti:
adults are filiform?
adults have hyaline sheath longer than itself?
secondary kinks and nuclei at tip of tail?

A

bancrofti
bancrofti
malayi

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18
Q

malayi vectors:

  • breeds in rice fields?
  • ” in swamps
A

M. uniformis

M. bonnae

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19
Q

important reservior of malayi

A

cat

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20
Q

with W. bancrofti, there is?

A

scrootal elephantiasis

hydrocele

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21
Q

t or f? manifestationc cannot be caused by degenerating worm?

A

false. can be:living or dead

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22
Q

hyperresponsiveness to maturing worms; in an endemic area; rashes and hives are present

A

Expatriate syndrome

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23
Q

t or f? decreased ESR is included in Sx of TPE

A

false; elevated all (hyper, high)

24
Q

hidden lymphatic pathology and kidney damage

A

asymptomatic

25
Q

immunologic phenomenon caused by sensitization to products of the worms, called?

A

ADL/DLA

26
Q 
seen at what stage?
ADL/DLA
elephantiasis
TPE
chyluria
A

acute
chronic
chronic
chronic

27
Q

rupture of lymphatics in the kidney

A

Chyluria

28
Q

nuclei of this worm is regularly space

A

bancrofti (think of BANK)

29
Q

Dx: centrifugation of blood sample in 2% lysed solution

A

knott’s method (nuts?!)

30
Q

what is DEC provocative test?

A

microfilaria out of tissues, so collection can be done at night time

31
Q

t or F? antigen detection test dx can distinguish past and present infection.

A

false.

32
Q

DX which may demostrate obstruction of lymphatics

A

UTZ

33
Q

DOC for bancrofti and malayi

A

DEC

34
Q

LOA LOA: is also known as?

A

african eye worm

35
Q

LOA LOA: priodicity?

A

diurnal

36
Q

since loa loa is diurnal the specimens from which it can be obtained are?

A

sputum
spinal fluid
urine

37
Q

noncirculation phase LOA LOA is found in?

A

lungs

38
Q

adult or microfilariae:

migrate to SQ deeper tissues?

A

adult

39
Q

patches of SQ edema called?

A

calabar swellings

40
Q

t or f? loasis is often asymptomatic

A

TRUE

41
Q

mansonella ozzardi vectors

A

cullicoides

simulium

42
Q

describe microfilariae of m. ozzardi

A

unsheated, non periodic, shorter tail and less tapered than onchocerca, do not extend to tail (nuclei)

43
Q

mansonellosis with skin pigmentations

A

m. streptocerca

44
Q

special morph feature of m. streptocerca

A

shepherd’s crook

45
Q

onchocerciasis is aka

A

river blindness

46
Q

onchocerca special diagnosis (together with streptocerca)

A

skin snips - corneal scleral punch

47
Q

unsheated, tail blunt

A

perstans

48
Q

mansonella that has nuclei that do not extend

A

ozzardi

49
Q

t or f: eggs are not diagnostic for toxocara

A

true

50
Q

2 main clinical presentations

A

visceral

ocular

51
Q

humans become infected by toxocara thru?

A

ingestion of eggs, and paratenic hosts

52
Q

only indication of infection in toxocara

A

serology

eosinophilia

53
Q

OLM vs. VLM?
occurs in young adults
- w rashes, hepatomeggaly and hyper eosino
- difficult to treat

A

OLM
VLM
OLM

54
Q

presence of these eggs, higher probabiity that toxocara is present

A

ascaris

trichuris

55
Q

only means of confirmation

A

antigen test (EIA)

Para (7 decks)

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