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Parasitology > Filaria/Tissue roundworms > Flashcards

Filaria/Tissue roundworms Flashcards

0
Q

It blocks lymphatics and affects lower extremities

A

Wunchereria bancrofti

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1
Q

Infective stage of Filarial Nematode

A

L3 larvae

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2
Q

Associated with decrease of vitamin A

A

Onchocerca volvulus

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3
Q

Most common filaria in the Philippines

A

Brugia malayi

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4
Q

Causes Elephantiasis

A

Wunchereria bancrofti

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5
Q

Most common filarial nematode

A

Wunchereria bancrofti

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6
Q

Its microfilariae is not found in the circulating blood

A

Onchocerca volvulus

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7
Q

It causes fugitive swelling

A

Loa loa

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8
Q

Give the filarial nematodes that has unsheathed microfilaria

A

Onchocerca volvulus
Mansonella perstans
Mansonella ozzardi

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9
Q

Give the filarial nematodes that has sheathed microfilaria

A

Wunchereria bancrofti
Brugia malayi
Loa loa (Eyeworm)

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10
Q

Best time to collect blood sample for Loa loa

A

Around noon (also seen in spinal fluid, urine, sputum in its noncirculating phase; blood AM)

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11
Q

Causes Tropical pulmonary eosinophilia (Weingarten Syndrome)

A

Brugia malayi

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12
Q

Associated with nodulectomy

A

Onchocerca volvulus

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13
Q

Its head spot has a v-shaped appearance

A

Mansonella perstans

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14
Q

Diagnostic test for Onchocerca volvulus

A

Skin snips

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15
Q

Causes Pruritis

A

Mansonella perstans

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16
Q

Other term for Tropical Pulmonary Eosinophilia

A

Weingarten’s Syndrome (caused by Brugia malayi)

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17
Q

Its microfilaria has a swelling tip

A

Brugia malayi

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18
Q

Where do Mansonell perstans located?

A

Body cavity (peritoneL, pleural and pericardium)

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19
Q

Causes Malayan Filariasis/Lymphatic Filariasis

A

Brugia malayi

20
Q

Calabar swelling is caused by?

A

Loa loa (also known as fugitive swelling)

21
Q

Disease caused by Onchocerca volvulus

A

Onchocerciasis/River Blindness

22
Q

Enumerate the non-periodic filarial nematode

A

Onchocerca volvulus
Mansonella perstans
Mansonella ozzardi

23
Q

Enumerate the nocturnal filarial nematodes

A

Wunchereria bancrofti

Brugia malayi

24
Q

Give the diurnal filarial nematodes

A

Loa loa/Eyeworm

25
Q

Mode of transmission of Filarial nematodes

A

Vectors

26
Q

Transmitted by Deerfly

A

Loa loa/Eyeworm

27
Q

Transmitted by Blackfly (genus Simulium)

A

Onchocerca volvulus

Mansonella ozzardi

28
Q

Transmitted by Midges/gnats (genus Culicoides)

A

Mansonella perstans

Mansonella ozzardi

29
Q

Exclusive to western hemisphere

A

Mansonell ozzardi

30
Q

Other name for Mansonella perstans

A

Persistent Filaria

31
Q

Also known as the New World Filaria

A

Mansonella ozzardi

32
Q

Seen in spinal fluid,urine, sputum in its noncirculating phase

A

Loa-loa (Eyeworm)

33
Q

Loa loa commonly reside in?

A

Subcutaneous tissue in the conjunctiva

34
Q

Found in the nodules of subcutaneous tissue and skin

A

Onchocerca volvulus

35
Q

Time of collection for nocturnal filarial nematode

A

10:00PM-2:00AM

36
Q

Its microfilaria is found in the skin and subcutaneous tissue and not in the blood

A

Onchocerca volvulus

37
Q

Adult worm is commonly found where?

A

Lymphatics
Subcutaneous tissue
Internal body cavities

38
Q

Its microfilaria has a pointed tail

A

Wunchereria bancrofti

39
Q

Differentiate the microfilaria of the different filarial nematodes

A

Wunchereria bancrofti - pointed tail
Brugia malayi - swelling tip
Loa loa/Eyeworm - rounded tail
Onchocerca volvulus - pointed tail
Mansonella perstans - broad and blunt tail
Mansonella ozzardi - thin and pointed tail

40
Q

It os designed to allow the recovery of microfilaria from a blood specimen

A

Knott concentration technique

41
Q

How many % of dilute formalin is used in knott concentration technique?

A

2%

42
Q

How many infective larvae is required to initiate infection?

A

1-4

43
Q

Treatment for filarial nematode and how many mg for each drug

A

Albendazole(400mg) + Ivermectin (150-200 meg/kg)

Albendazole (400mg) + Diethycarbamazine citrate (6mg/kg)

44
Q

Treatment for Mansonella ozzardi

A

Ivermectin

*DEC/Diethycarbamazine citrate is not effective

45
Q

Filarial nematode commonly treated with DEC

A

Wunchereria ban rofti
Brugia malayi
Loa loa/Eyeworm
Mansonella perstans

46
Q

Filarial nematode commonly treated with Ivermectin

A

Onchocerca volvulus

Mansonella ozzardi

47
Q

This filaria elicits strong eosinophilia

A

Loa-loa/Eyeworm

48
Q

Disease caused by Mansonella perstans

A

Pruritis Athralgias; adenopathy; hepatomegaly

Parasitology (8 decks)

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