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Microbiology > Trematodes > Flashcards

Trematodes Flashcards

1
Q

Trematodes AKA

A

Flukes

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2
Q

Trematodes includes which organisms

A

Schistosoma
Paragonimus Westermani
Clonorchis sinesis
Opisthorchis
Fasciola hepatica
Fasciolapis buski

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3
Q

Infective form in case of Trematodes and exception

A

Metacercaria larva
Except Schistosoma - Cercaria larvae

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4
Q

Mode of infection in case of Trematodes and exception

A

Ingestion except Schistosoma - skin penetration

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5
Q

Eggs seen in case of Trematodes and exception

A

Operculated eggs

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6
Q

Eggs in Schistosoma species

A

Spinous egg
S. Mansoni - Lateral spine
S. Hematobium - Terminal spine
S. Japanicum - Rudimentary spine

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7
Q

Sex of Trematodes and exception

A

All hermophrodites except Schistosoma (separate sex)

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8
Q

Which Trematode doesn’t have secondary intermediate host

A

Schistosoma

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9
Q

Hosts in Schistosoma

A

Definitive host - Human
1st intermediate host - Snail
2nd intermediate host - Nil

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10
Q

Hosts in Paragonimus Westermani/Pulmonary fluke

A

Definitive host - Human
1st intermediate host - Snail
2nd intermediate host - Crab/Cray fish

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11
Q

Hosts in Clonorchis sinesis

A

Definitive host - Human
1st intermediate host - Snail
2nd intermediate host - Fish

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12
Q

Hosts of Opisthorchis

A

Definitive host - Human
1st intermediate host - Snail
2nd intermediate host - Fish

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13
Q

Hosts in Fasciola hepatica (Sheep liver fluke) and Fasciolopsis buski

A

Definitive host - Sheep/Man
1st intermediate host - Snail
2nd intermediate host - Fresh aquatic plants (water chestnut)

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14
Q

Schistosoma species includes

A

S. Mansoni
S. Hematobium
S. Japanicum

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15
Q

Schistosoma AKA

A

Blood fluke

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16
Q

Schistosoma shape

A

2 suckers
Separate sexes

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17
Q

Infective form of Schistosoma

A

Cercaria larva - forked tail
Enters by penetrating skin

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18
Q

Schistosoma hematobium resides in

A

Resides in vesical and pelvic Venous plexus

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19
Q

Schistosoma hematobium Causes

A

Causes hematuria
Squamous CC > Transitional CC ,(, Urinary bladder)

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20
Q

Schistosoma Mansoni resides in

A

Inferior Mesenteric vein draining Sigmoid rectal region

21
Q

Schistosoma Mansoni causes

A

Swimmer’s itch

22
Q

Schistosoma Japanicum resides in

A

Superior mesenteric vein draining ileocecal region

23
Q

Schistosoma Japanicum causes

A

Swimmer’s itch (more severe)
Genital Schistosomiasis
CNS Schistosomiasis

24
Q

Schistosoma causes

A

Acute Schistosomiasis
Chronic Schistosomiasis

25
Q

Acute Schistosomiasis C/F

A

Katayama like fever - serum sickness like illness

26
Q

Chronic Schistosomiasis causes

A

Granuloma
Pipestem fibrosis (periportal)

27
Q

Schistosoma Intercalatum features

A

West central africa
Terminal spine
Stools
Acid fast

28
Q

Diagnosis findings in Schistosomiasis

A

Urine/stool sample - Spiked eggs

29
Q

Paragonimus Westermani AKA

A

Lung fluke

30
Q

Endemic focus of Paragonimus Westermani in India

A

Manipur

31
Q

Pulmonary symptoms in case of Paragonimus Westermani

A

Cough with sputum - Golden fleks (eggs of P. Westermani - operculated eggs)

32
Q

Extrapulmonary symptoms in case of Paragonimus Westermani

A

Abdominal involvement

33
Q

Infective form of Paragonimus Westermani

A

Metacercaria larva

34
Q

Eggs in life cycle of Schistosoma

A

MCC
Miracidia
Cysts
Cercaria

35
Q

Eggs in life cycle of Paragonimus Westermani

A

MCRCM
Miracidia
Cysts
Redia
Cercaria
Metacercaria

36
Q

Liver flukes examples

A

Chlonorchis sinesis
Opisthorchis viverini
Opisthorchis felineus
Fasciola hepatica
Fasciola gigantica

37
Q

Chlonorchis sinesis AKA

A

Chinese Liver fluke - looks like spatula (narrow and broad end(

38
Q

Opisthorchis viverini AKA

A

Southeast asian liver fluke

39
Q

Opisthorchis felineus AKA

A

Cat liver fluke

40
Q

Fasciola hepatica AKA

A

Sheep liver fluke

41
Q

Fasciola gigantica AKA

A

Giant liver fluke

42
Q

Infective form,sex and eggs of Liver flukes

A

Infective form - Metacercaria
Sex - Hermaphrodites
Eggs - Operculated eggs - MRCM

43
Q

Chlonorchis sinesis

A

Causes cholangitis - Cholangiocarcinoma

44
Q

Fasciola hepatica Causes

A

Bile duct obstruction
RUQ pain, Jaundice
Halzoun - suffocation due to laryngeal edema

45
Q

Intestinal Trematodes includes

A

Fasciolapsis buski (Giant intestinal fluke)
Heterophyes (SI fluke)
Metagonionus yokogawai
Gastrodiscoides hominis (colonic fluke)

46
Q

Which intestinal fluke resides in large intestine

A

Gastrodiscoides hominis (Colonic fluke)

47
Q

Fasciolapsis buski clinical features

A

Abdominal pain
Diarrhea
Malabsorption

48
Q

Hosts in case of intestinal Trematodes

A

Definitive host - Human
1st intermediate host - Snail
2nd intermediate host - Fresh aquatic vegetations

49
Q

Treatment of Trematodes and exception

A

Praziquantel for all
Except - Fasciola hepatica - Triclabendazole

Microbiology (37 decks)

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