F, Lec (free Living Amebae)

Question 1

2 spp of free living pathogenic amebae

Answer 1

Acanthoamoeba spp and naegleria spp.

Question 2

Small, freeliving amoeba that feeds on gram negative bacteria, blue-green algae, or yeast

Answer 2

Acanthoamoeba species

Question 3

Acanthoamoeba reproduce via

Answer 3

Binary fission

Question 4

T or F: acanthoamoeba are ubiquitous

Answer 4

True

Question 5

Double walled displaying outer wrinkled wall and an inner polygonally shaped wall

Answer 5

Cyst

Question 6

Is at the point of contact between two wall

Answer 6

Ostioles

Question 7

Used as culture for acanthoamoeba

Answer 7

Proteose-peptone, yeast extract, glucose, cysteine

Question 8

Occurs in chronically ill and debilitated individuals, those with impaired immune defense mechanisms, those under immunosuppressive therapy

Answer 8

Granulomatous amebic encephalitis

Question 10

Non specific symptoms of GAE include

Answer 10

Fever, chills, fatigue, weight loss, headache, confusion, somnolence, coma, hallucination, seizures(common)

Question 11

Neurological symptoms of GAE include

Answer 11

Focal hemiparesis, cranial nerve palsies, visual disturbance, ataxia,

Question 12

Edematous and soft w/ hemorrhage and abscess

Answer 12

Cerebral hemiparesis

Question 13

Most affected part of the brain of GAE

Answer 13

Posterior fossa structures, diencephalon thalamus, brainstem

Question 14

Skin lesion due to increased intracranial pressure

Answer 14

Papilledema

Question 15

Important diagnostic feature GAE

Answer 15

Intracranial pressure

Question 16

Incubation period of GAE

Answer 16

10 days

Question 17

Infection of GAE lasts for

Answer 17

Several days

Question 18

Primary sites of GAE

Answer 18

Skin or lungs

Question 19

Associated with the use of contact lenses

Answer 19

Amebic keratitis

Question 20

Clinical manifestations

Answer 20

Granulomatous amebic encephalitis and amebic keratitis

Question 21

Is diagnosed only after death

Answer 21

Acanthamoeba encephalitis