Classification of Sporozoans (Toxoplasma gondii) Flashcards

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1
Q

This class of sporozoans identify cats as their definitive hosts?

A

Toxoplasma gondii

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2
Q

This diagnosis is most likely for an immunosuppressed patient with focal
NEUROLOGIC signs (T. gondii)

A

cerebral toxoplasmosis

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3
Q

TRUE or FALSE: cats are the ONLY hosts for Toxoplasma gondii?

A

FALSE: The definitive host of T. gondii is the cat, but the parasite can be carried by many warm-blooded animals (birds or mammals).

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4
Q

What class of species if the causative agent for toxoplasmosis?

A

T. gondii

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5
Q

TRUE OR FALSE: T. gondii can be transferred during pregnancy?

A

TRUE: It can have serious or fatal effects on a fetus if the mother
contracts it during pregnancy

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6
Q

TRUE OR FALSE: the oocyst of T. gondii can be present in humans?

A

FALSE: Present in cats and other felines (not in
humans

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7
Q

Shape of the oocyst (T. gondii); structure; How is it made?

A

Spherical or oval; contains sporoblast; Sexual reproduction

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8
Q

This morphology of T. gondii occurs in chronic infection and it is formed when parasites multiply and produce a wall within host cell

A

Tissue cyst

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9
Q

These are forms of trophozoite that are slowly multiplying and are contained in a tissue cyst?

A

Bradyzoites

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10
Q

This morphological phase of T. gondii is seen during acute infection; crescent shaped when it infects; oval shaped when entering the host; multiples asexually?

A

Tachyzoite

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11
Q

TRUE OR FALSE: severe symptoms are experienced when a person in infected with T. gondii?

A

FALSE: Mostly asymptomatic, except for:
- Infection during pregnancy (causes fetal
malformation)
- Infection in immuno-suppressed

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12
Q

How is t. gondii detected? (Disgnostic method)

A

Serology

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13
Q

Give 3 symptoms that is indicated with T. gondii?

A

Any of the following:
anorexia
weight loss
lethargy (lack of energy)
difficulty breathing (because of pneumonia)
eye inflammation
fever
swollen lymph nodes

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14
Q

Diagnostic methods for T. gondii, name 5 for specimen technique? for specimen. HINT: Ly Bo C Bro Pe

A

Lymph node biopsy
Bone marrow aspiration
CSF
Broncho alveolar lavage
Peritoneal fluid

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15
Q

Diagnostic method (Lab procedure) that allows you to Detect: Tachyzoite? Explain

A

Direct microscopy
Smear is taken in a glass slide → air dry → Leishman/Giemsa stain

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16
Q

In a culture lab procedure to detect T. gondii, what is observed?

A

Bradyzoite

17
Q

What is the treatment for T. gondii called?

A

TRIPLE THERAPY

18
Q

Explain Triple Therapy?

A

Sulfadiazine-pyrimethamine-Corticosteroids

19
Q

Toxoplasmosis in immunocompromised patients are manifested as what medical disease?

A

Toxoplasmic encephalitis

20
Q

Name 3 medical abnormalities a fetus can acquire if T. gondii passes through the placenta?

A

Microcephaly
Hydrocephalus
Chorioretinitis

21
Q
A