Deck 43: Parasitic Infections: Antiprotozoal and Anthelmintic Drugs

Question 1

What two ways can campers remove Giardia cysts from a natural water source?

A) Boiling and filters
B) Boiling and chemical treatment
C) Filters and chemical treatment
D) Freezing and chemical treatment

Answer 1

Boiling and filters

Question 2

Malaria produces its effect in what two places in the body?

A) Brain and urinary system
B) Kidney and digestive system
C) Liver and circulatory system
D) Pancreas and immune system

Answer 2

Liver and circulatory system

Question 3

A therapeutic use for quinine,other than for treating malaria,is for treating:

A) Blurred vision
B) Headache
C) Motion sickness
D) Nocturnal leg cramps

Answer 3

Nocturnal leg cramps

Question 4

Ms.Smith has a family history of anemia.After returning from a vacation in the tropics,she develops malaria.Which medication should not be given?

A) Primaquine
B) Mefloquine
C) Chloroquine
D) Hydroxychloroquine

Question 5

A patient with a tapeworm infestation has been admitted to the hospital.The patient also has a low blood count.What should be suspected by the health care professional?

A) There is also a serious infection in addition to the tapeworm infestation.
B) The tapeworm is producing a toxin that is destroying red blood cells.
C) The tapeworm is robbing the body of cofactors needed to produce red blood cells.
D) The tapeworm may have perforated the intestines, causing hemorrhaging.

Question 6

Is a radical cure for malaria necessary for someone who is asymptomatic?

A) No. Prophylactic treatment would suffice.
B) No. Malaria is never asymptomatic.
C) Yes. The patient could still have the parasite in the liver.
D) Yes. The patient could still have the parasite in the red blood cells.

Question 7

A patient with severe liver disease and dysentery arrives at the hospital.Can the patient receive metronidazole?

A) Yes, but treatment should be supplemented with vitamin B₁₂.
B) Yes, but close monitoring will be required.
C) No. This has been shown to increase the patient's risk for developing cancer.
D) No. This can cause a disulfiram-like reaction in the patient.

Question 8

Where is the location of the malarial microorganism when a human is first exposed?

A) White blood cell
B) Red blood cell
C) Liver
D) Kidney

Question 9

Entamoeba histolytica is more dangerous than Giardia lamblia at producing dysentery because:

A) Entamoeba can invade the liver.
B) Entamoeba can cross the blood-brain barrier.
C) Entamoeba causes tenesmus.
D) Entamoeba can become resistant to treatment.

Question 10

A desirable feature of metronidazole is its ability to:

A) Limit its effect to certain regions of the body
B) Distribute over a wide range systemically
C) Be well tolerated in patients with liver problems
D) Not cross the placenta

Question 11

Which of the following protozoal infections does not respond to drug therapy?

A) Malaria
B) Dysentery
C) Trichomoniasis
D) All of these respond to drug therapy.

Question 12

Since many parasitic worms are ingested and remain in the intestines,many anthelmintic drugs can successfully exert their effect because many are poorly absorbed.Piperazine will induce its action by:

A) Initiating a depolarizing neuromuscular blockade in the worm
B) Irreversibly inhibiting acetylcholinesterases in the worm
C) Causing rigid paralysis in the worm
D) Causing flaccid paralysis in the worm

Question 13

After returning from a trip to the tropics,Mr.Smith begins to experience flu-like symptoms.The chills and high fever he is experiencing are probably due to:

A) Bacteria colonizing the large intestines
B) Protozoa rapidly multiplying and causing red blood cells to rupture
C) A virus spreading in the central nervous system
D) A ringworm infection

Question 14

An example of a sexually transmitted protozoan would be:

A) Malaria
B) Trichomoniasis
C) Dysentery
D) Toxoplasmosis

Question 15

In order to avoid toxoplasmosis,pregnant women should stay away from a cat's litter box for:

A) Only the first trimester
B) The first and second trimester
C) All three trimesters
D) Only the third trimester

Question 16

What should be avoided so that a disulfiram-like reaction will not be experienced by a patient on metronidazole?

A) Dairy products
B) Alcohol
C) Antacids
D) Iron supplements

Question 17

What antimalarial agent can be used to produce a radical cure?

A) Primaquine
B) Chloroquine
C) Mefloquine
D) Quinine

Question 18

A patient with malaria has overdosed on chloroquine.If no antidote is available,what can be done for the patient?

A) Administration of oxygen
B) Administration of plenty of fluids
C) Alkalinization of the urine
D) Acidification of the urine

Question 19

What medication might a person be taking if he or she experiences headache and ringing in the ears?

A) Primaquine
B) Pyrimethamine
C) Hydroxychloroquine
D) Quinine

Question 20

Toxoplasmosis spreads to humans from:

A) Dust mites
B) Ingestion of food contaminated with the worm
C) Oocysts found in the stool of felines
D) Pet dander