Question 1

A skin snip is performed,and microfilariae with tapered tails,no nuclei,and unsheathed are microscopically observed.The recommended therapy for this infection is:

Accepted Answer

A) ivermectin. 
B) diethylcarbamazine. 
C) antihistamines. 
D) mebendazole. 
A) ivermectin. 
B) diethylcarbamazine. 
C) antihistamines. 
D) mebendazole. A

Question 2

Match the organism with the vector of transmission.Answers may be used more than once.
-L.loa

Accepted Answer

A) Tabanid fly 
B) Biting midges 
C) Anopheles mosquito 
D) Black fly 
A) Tabanid fly 
B) Biting midges 
C) Anopheles mosquito 
D) Black fly A

Question 3

Match the organism with the vector of transmission.Answers may be used more than once.
-W.bancrofti

Accepted Answer

A) Tabanid fly 
B) Biting midges 
C) Anopheles mosquito 
D) Black fly 
A) Tabanid fly 
B) Biting midges 
C) Anopheles mosquito 
D) Black fly C

Question 4

A Giemsa stain is performed on an eye exudate on a patient with calabar swelling,eosinophilia,and a recent travel history to Africa.L.loa is suspected;however,the sheath in the adult worm recovered does not stain.Which one of the following statements explains this discrepancy?

Accepted Answer

A) The worm recovered is not L.loa. 
B) The specimen should have been stained with trichrome stain. 
C) The Giemsa stain is most likely expired. 
D) No discrepancy is present.The sheath does not stain with Giemsa stain. 
A) The worm recovered is not L.loa. 
B) The specimen should have been stained with trichrome stain. 
C) The Giemsa stain is most likely expired. 
D) No discrepancy is present.The sheath does not stain with Giemsa stain.

Question 5

Match the organism with the vector of transmission.Answers may be used more than once.
-Brugia spp.

Accepted Answer

A) Tabanid fly 
B) Biting midges 
C) Anopheles mosquito 
D) Black fly 
A) Tabanid fly 
B) Biting midges 
C) Anopheles mosquito 
D) Black fly

Question 6

The definitive host and reservoir for Wuchereria bancrofti is:

Accepted Answer

A) mosquito. 
B) microfilaria. 
C) humans. 
D) tabanid fly. 
A) mosquito. 
B) microfilaria. 
C) humans. 
D) tabanid fly.

Question 7

A 36-year-old man who has been traveling through the orient is experiencing a tender region in the inguinal region.A blood film is made,and sheathed microfilariae with four to five subterminal nuclei and two terminal nuclei in the tail are identified using Giemsa stain.The organism is most likely:

Accepted Answer

A) W.bancrofti. 
B) Onchocerca volvulus. 
C) Loa loa. 
D) Brugia malayi. 
A) W.bancrofti. 
B) Onchocerca volvulus. 
C) Loa loa. 
D) Brugia malayi.

Question 8

Match the organism with the vector of transmission.Answers may be used more than once.
-Mansonella spp.

Accepted Answer

A) Tabanid fly 
B) Biting midges 
C) Anopheles mosquito 
D) Black fly 
A) Tabanid fly 
B) Biting midges 
C) Anopheles mosquito 
D) Black fly

Question 9

Match the organism with the vector of transmission.Answers may be used more than once.
-O.volvulus

Accepted Answer

A) Tabanid fly 
B) Biting midges 
C) Anopheles mosquito 
D) Black fly 
A) Tabanid fly 
B) Biting midges 
C) Anopheles mosquito 
D) Black fly

Question 10

Chyluria is a result of lymphatic rupture and fluid entering the urine.Another lymphatic condition caused by W.bancrofti is:

Accepted Answer

A) calabar swelling. 
B) elephantiasis. 
C) river blindness. 
D) pruritic rash. 
A) calabar swelling. 
B) elephantiasis. 
C) river blindness. 
D) pruritic rash.

Exam 51: Blood Nematodes

A skin snip is performed,and microfilariae with tapered tails,no nuclei,and unsheathed are microscopically observed.The recommended therapy for this infection is:

Match the organism with the vector of transmission.Answers may be used more than once. -L.loa

Match the organism with the vector of transmission.Answers may be used more than once. -W.bancrofti

A Giemsa stain is performed on an eye exudate on a patient with calabar swelling,eosinophilia,and a recent travel history to Africa.L.loa is suspected;however,the sheath in the adult worm recovered does not stain.Which one of the following statements explains this discrepancy?

Match the organism with the vector of transmission.Answers may be used more than once. -Brugia spp.

The definitive host and reservoir for Wuchereria bancrofti is:

A 36-year-old man who has been traveling through the orient is experiencing a tender region in the inguinal region.A blood film is made,and sheathed microfilariae with four to five subterminal nuclei and two terminal nuclei in the tail are identified using Giemsa stain.The organism is most likely:

Match the organism with the vector of transmission.Answers may be used more than once. -Mansonella spp.

Match the organism with the vector of transmission.Answers may be used more than once. -O.volvulus

Chyluria is a result of lymphatic rupture and fluid entering the urine.Another lymphatic condition caused by W.bancrofti is:

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