Intestinal And Tissue Nematodes Flashcards

(47 cards)

1
Q

What are the types of Intestinal Nematodes

A

Enterobius Vermicularis
Trichuris Trichiura
Ascaris Lumbricoides
Necator and Ancylostoma
Stronglyloides Stercorolis

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2
Q

How is the transmission of Enterobius Vermicularis

A

Hand to mouth

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3
Q

What are the symptoms of Enterobius Vrermicularis

A

Causes perianal,perineal,vaginal irritation
Insomnia
Restlessness
Mild abdominal pain
Nausea
Vomiting

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4
Q

How is the diagnosis of Enterobius Vermicularis

A

Identification of the eggs from perianal region — NOCTURNAL observation
Cellophane tape

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5
Q

What is the host of Enterobius Vermicularis

A

Only human

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6
Q

How is the transmission of the Trichuris Trichiura

A

Eggs are passed in the feces
Fully embryonated eggs ingested

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7
Q

What are the features of the Trichuris Trichiura

A

Live in long intestine
Migrate in cecum
Larva live in colon
Eggs must undergo development in the soil before they become infective

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8
Q

How is the diagnosis of Trichuris Trichiura

A

Recovery or identification of eggs in feces

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9
Q

How is the shape of Trichuris Trichiura’s eggs

A

Barrel shaped

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10
Q

What does Trichuris Trichiura causes

A

Bloody, mucus diarrhea

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11
Q

What is the largest intestinal nematode

A

Ascaris Lumbricoides

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12
Q

How is the transmission of the Ascaris Lumbricoides

A

Eggs are passed in the feces
Ingestion of warm eggs

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13
Q

What are the features of the Ascaris Lumbricoides

A

Live in intestine
Blockage of intestines— malnutrition
Pneumonia

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14
Q

How is the diagnosis of Ascaris Lumbricoides

A

Identification of eggs in fecal samples

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15
Q

Which nematode has Flariform larva

A

Necator and Ancylostoma

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16
Q

What are the symptoms of Necator and Ancylostoma

A

Causes iron deficiency anemia
Coomonly asymptomatic
Abdominal pain
Anorexia
Nausea
Sore throat
Bloody sputum

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17
Q

Diagnosis of Necator and Ancylostoma

A

Recovery, identification of eggs in feces

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18
Q

What is the host of Stronglyloids Stercoralis

A

D: dogs

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19
Q

What does Stronglyloides Stercoralis causes

A

Skin: allergic reaction
Lungs: pneumonia
Intestinal: abdominal pain, diarrhea, vomiting, weight loss , anemia

20
Q

How is the diagnosis of the Stronglyloides Stercoralis

A

Recovery and identification of larvae in the feces,eggs in duodenal drainage

21
Q

What are hosts of Trichinella Spiralis

A

Main resovior: Pigs
Alternate host: Man

22
Q

How is the transmission of the Trichinella Spiralis

A

Ingestion of undercooked meat containing encysted larvae

23
Q

What are the symptoms of Trichinella Spiralis

A

Malaise
Diarrhae
Periorbital edema
Muscle weakness
Myocarditis
Encephalitis

24
Q

How is the diagnosis of Trichinella Spiralis

A

History
Muscle biopsy
Stool examination of adult form/ larvae
PCR
ELISA

25
What are the hosts of Dracunvulus Medinenensis
D: Human I: Cyclops
26
How is the transmission of the Dracunculus Medinensis
Drinking unfiltered water containing copepods
27
What are the symptoms of Dracunculus Medinensis
Pruritus Urticarial rash Blister formation in skin Cellulitis
28
How is the diagnosis of the Dracunculus Medinensis
Detection of adult worm and larval form in ulcer ELISA IPA X-RAY
29
What are the 2 agents of the Lymphotic Filariasis
Wucheria boncofti Brugia Malayi
30
Where does Lymphotic Fibrosis agents live in?
Adult forms only live in human lymph system
31
How is the microfilariae of the Lymphotic Filsriasis agents
Sheathed
32
How is the transmission of the Lymphatic Filariosis
Person to person
33
What are the vectors of Wucheria
Culex Aedes Anopheles mosquito
34
What are the vectors of the Brugia Malayi
Monsonia Anopheles Aedes mosquito
35
What does Wucheria and Bruglia causes
Lymphedema Elephantiasis Hydrocele Swelling
36
How is the diagnosis of the Wucheria
Microfilaria in blood, history, symptoms
37
How is the diagnosis of the Brugia Malayi
Microfilaria in stained blood smears
38
What are the hosts of the Loa Loa
Only definitive: humans
39
How is the transmission of the Loa Loa
Day-bitting flies (chrysops)
40
Where does the adult forms of Loa Loa can migrate through?
Subcutaneous tissue Muscle In front of the eyeball Subconjunctival migration
41
How is the diagnosis of the Loa Loa
Demonstration of adult worm from skin and conjunctiva
42
How is the Microfilaria of the Onchoecrca Valvulus
Not sheathed
43
Where does Onchoncerca Valvulus found
Skin Not in blood stream
44
What is the vector of the Onchocerca Valvulus
Simulium flies
45
Where id the infection of the Onchocerca Valvulus
Dermis and subcutaneous tissue
46
Which nematode has a Fibrotic nodule
Onchocerca Valvulus
47
How is the diagnosis of the Onchocerca Valvulus
Microfilariae are found in skin scrapings from around nodules