Chapter 3 - ( The Filariae)

Question 1

What do you call to adult filariae that produces larvae that are usually detected in the blood.

Answer 1

Microfilariae

Question 2

What are the 6 that claim under Blood and Tissue species?

Answer 2

Wuchereria bancrofti
Brugia malayi
Loa loa
Onchocerca volvulus
Mansonella ozzardi
Mansonella perstans

Question 3

What do you call to an enlargement of skin and subcutaneous tissue.

Answer 3

Elephantiasis

Question 4

This has a thin and delicate sheath surrounds the organisms and has a numerous nuclei are contaminated in the body.

Answer 4

Wuchereria bancrofti

Question 5

What is the laboratory diagnostic method of choice of W. bancrofti?

Answer 5

A fresh Giemsa-stained blood

Question 6

This organism,like W. bancrofti possesses a sheath,rounded anterior end ,and numerous nuclei and has characteristics that distinguishes it from the other sheathed organisms is the presence of two distinct nuclei in the tip of somewhat pointed tail.

Answer 6

Brugia malayi

Question 7

What is the best method for diagnosis of B. malayi?

Answer 7

Stained blood films

Question 8

This microfilaria usually measures 248 to 300 um in length and nuclei fill the organisms and are continuous to the tip of the pointed tail.

Answer 8

Loa loa

Question 9

What is the specimen of choice for the recovery of L. loa ?

Answer 9

Giemsa-stained blood

Question 10

This microfilariae ranges in length from 150 to 355 um and the one primary characteristics that distinguishes this organism from the other microfilariae is that it does not possess a sheath.

Answer 10

Onchocerca volvulus

Question 11

What is the specimen of choice for the recovery of O. volvulus microfilariae?

Answer 11

Skin snips ( multiple Giemsa-stained slides of tissue biopsies that collected from suspected infected areas)

Question 12

This microfilaria has a rounded, blunt anterior end and measures approximately 220 um.

Answer 12

Mansonella ozzardi

Question 13

What is the specimen of choice for the recovery of M. ozzardi?

Answer 13

Peripheral blood

Question 14

This microfilaria measures about 200 um in length and the organism does not have a sheath and the body is filled with nuclei that extend all the way to the tip of the tail and the anterior or tail end is rounded and blunt.

Answer 14

Mansonella perstans

Question 15

What is the specimen of choice for the recovery of M. perstans?

Answer 15

Blood

Question 16

What is the treatment of choice for L. loa ?

Answer 16

Surgical removal of adult L. loa

Question 17

What is the drug of choice for the treatment of O. volvulus?

Answer 17

Ivermectin

Question 18

What is the mode of transmission of L. loa ?

Answer 18

Bite of infected Chrysops fly

Question 19

In what % of formalin does the B. malayi takes long?

Answer 19

2% formalin

Question 20

What are three vector of the infective stage of Wuchereria bancrofti?

Answer 20

Culex,Aedes and Anopheles spp.