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Parasitology > Trematodes/Flukes > Flashcards

Trematodes/Flukes Flashcards

0
Q

Species under liver and intestinal flukes

A

Fasciola hepatica
Fasciola gigantica
Fasciola buski

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1
Q

Species that are under liver flukes

A

Clonorchis sinensis
Opistorchis viverrini
Opistorchis felineus

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2
Q

Other miscellaneous nematodes…..

A

Paragonimus westermani

Eurytrema pancreaticum

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3
Q

Give the blood flukes/schistosoma species

A

S.mansoni
S.japonicum
S.haematobium

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4
Q

Class of helminth that are pathogenic to human, are leaf-like and flat in structure and are hermaphroditic

A

Trematodes/flukes

*schistosomes are not flat, leaf-like and hermaphroditic

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5
Q

Give the stages in a snail

A

Miracidium
Sporocyst
Rediae
Cercariae

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6
Q

First larva stage that emerges from the egg in fresh water

A

Miracidium

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7
Q

Emerges from the miracidium as a sac-like structure containing the larva

A

Sporocyst

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8
Q

Intermediate larval stage occurring in the sporocyst

A

Rediae

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9
Q

Final stage of development occurring in the snail and are motile by means of a tail

A

Cercariae

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10
Q

Infective stage for all schistosomes

A

Cercariae

*schistosomule - cercariae minus the tail

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11
Q

Encysted form occurring in the second intermediate host

A

Metacercariae

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12
Q

Infective stage for all flukes except schistosomes

A

Metacercariae

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13
Q

Flukes that are found in cosmopolitan

A

Clonorchis sinensis

Fasciola hepatica

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14
Q

Flukes found in the Orient, Africa and Hawaiian islands

A

Opistorchis viverrini

Fasciola gigantica

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15
Q

Flukes found in Far East, India and Subcontinent

A

Opistorchis felineus

Fasciola buski

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16
Q

Flukes found in Far East

A

Paragonimus westermanni
S.japonicum
Opistorchis felineus
Fasciola buski

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17
Q

Flukes found in the Orient

A

Eurytrema pancreaticum
Opistorchis viverrini
Fasciola hepatica

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18
Q

Trasmitted through ingestion of uncooked crabs and cray fishes

A

Paragonimus westermanni

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19
Q

Oriental Lung Fluke

A

Paragonimus westermanni

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20
Q

Sheep Liver Fluke

A

Fasciola hepatica

21
Q

Oriental/Chinese Liver Fluke

A

Clonorchis sinensis

22
Q

Giant Liver Fluke

A

Fasciola gigantica

23
Q

Giant Intestinal Fluke

A

Fasciola buski

24
Q

Southeast Asian Liver Fluke

A

Opistorchis viverrini

25
Q

Cat Liver Fluke

A

Opistorchis felineus

26
Q

First intermediate host for Flukes

A

Snail

*except for the Miscellaneous trematodes (crabs, cray fishes and grasshopper) and schistosomes

27
Q

How many % is the serologic test sensitivity for S.mansoni?

A

99%

S.japonicum -> 95%
S.haematobium -> 55%

28
Q

Its ova is lightbulb shape, operculated with 1 knob at the opposite end of operculum

A

Clonorchis sinensis

Opistorchis -> operculated with 1 knob at the opposite end of operculum

29
Q

Its ova is flattened on operculated end “Chinese Vase egg”

A

Paragonimus westermanni

30
Q

Describe the sputum (macroscopic) of the infected by the Paragonimus westermanni

A

Reddish brown flecks resembling iron filings

31
Q

Location of adult in hosts

A

Bile ducts

32
Q

What is the gold standard for diagnosis of Eurytrema pancreaticum

A

Stool examination

33
Q

Best specimen for diagnosing Paragonimus westermanni

A

Stool

Sputum

34
Q

Presence of cephalic cone

A

Fasciola hepatica

Fasciola gigantica

35
Q

Protein wasting enteropathy

A

Fasciola buski

36
Q

Characterized by a prominent lateral spine (ova)

A

S.mansoni

S.japonicum -> rudimentary lateral spine
S.haematobium -> terminal spine

37
Q

Enumerate the site of predilection of schistosoma’s

A

S.mansoni -> inferior mesenteric vessels
S.japonicum -> superior mesenteric vessels
S.haematobium -> venous plexus of the bladder

38
Q

Oriental blood fluke

A

S.japonicum

39
Q

Disease cause by S.mansoni

A

Intestinal bilharziasis/Schistosomal dysentery

40
Q

Disease cause by S.japonicum

A

Katayama’s disease

Jacksonian episodes

41
Q

Disease caused by S.haematobium

A

Urinary bilharziasis/Schistosomal hematuria

42
Q

Endemic in Leyte and Bicol

A

S.japonicum

43
Q

Prevalent in Egypt (Middle East)

A

S.haematobium

44
Q

Type of inflammation caused by S.japonicum

A

Pipestem fibrosis

45
Q

Drug or choice for the treatment of flukes

A

Praziquantel

46
Q

Egg hatching occurs immediately after immersion to water. What is the disease?

A

Schistomiasis aka Bilharziasis

47
Q

The first intermediate host that causes Schistomiasis

A

Snail (mollusk) -> oncemelania quadrasi

48
Q

Schistomiasis is associated w/ ____________

A

Swimmer’s itch

49
Q

Smallest form of S.haematobium

A

S.entercalatum

Parasitology (8 decks)

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