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National Board Practice Questions - Quiz 4

An 8-year-old dairy cow presents with nodular lesions on her neck from which a caseous material is expressed. Microscopic examination of the material reveals these organisms. You recommend:
No treatment because this is a self-limiting and non-contagious condition Isolate the affected cow and immediately report to state and federal veterinarians Cull the affected cow to prevent spread through the herd Treat with a single application of a pour-on avermectin Aggressively treat every 2 weeks for several months to prevent spread through the herd
Which of the following helminths is rare in cats in the continental United States:
Dipylidium caninum Ancylostoma tubaeforme Toxocara cati Trichuris felis Taenia taeniaeformis
You examine a pruritic pig with crusting hyperkeratotic lesions on the pinna of both ears. You confirm your intial diagnosis with a microscopic examination of a skin scrape. What treatment is most likely to be effective?
Lincomycin Fenbendazole Ivermectin Metronidazole Toltrazuril
A five-year old intact female Labrador retriever presents for routine spay. At laparotomy, a stout red nematode nearly 1 meter in length is found free in the abdominal cavity. What parasite is this?
Dioctophyme renale Dipylidium caninum Dipetalonema reconditum Dirofilaria immitis Diphyllobothrium latum
Which of the following types of adult cattle are, as a group, most likely to be infected with the causative agent of bovine trichomoniasis?
Bulls > 4 years of age Cows Steers Virgin heifers A and B
Horse bot flies (Gasterophilus spp.) adhere their eggs to the hair shafts of horses. Where in the horse are the larvae of Gasterophilus spp. found?
Nasal cavity Ileocecal junction Stomach Subcutaneous cysts on the dorsum Subcutaneous cysts on the ventral aspect of the neck
A 9-year-old spayed female indoor-only cat is brought to your clinic because the client is 4 months pregnant and concerned about toxoplasmosis. Which of the following is not an appropriate course of action:
Submit a serum sample from the cat for a Toxoplasma gondii titer and recommend euthanizing the cat if the titer is positive Instruct the client to only eat thoroughly cooked meat Encourage the client to continue to keep the cat indoors and prevent the cat from ingesting any wildlife that may serve as reservoir hosts Instruct the client that she should not feed raw meat to her cat Encourage the client to have someone else change the litterbox for the duration of her pregnancy
Which organ is most commonly affected in cats that develop disease due to infection with Dirofilaria immitis?
Liver Lung Kidney Central nervous system Skeletal muscle
Disease caused by cyathostomes, or small strongyles, in horses generally results from:
Larval irritation in the skin resulting in seasonal dermatitis, commonly referred to as summer sores Extensive migration of larvae throughout the liver, lungs, and kidneys of infected horses Aggressive blood feeding activity of the adult worms Tracheal and bronchial irritation due to presence of adult worms in the airways Emergence of encysted larvae from the intestinal mucosa
What diagnostic test is best able to detect eggs in the feces of a 1-week-old puppy infected with ascarids and hookworms?
Sodium nitrate fecal flotation Zinc sulfate fecal flotation with centrifugation Direct smear Fecal sedimentation None of these methods because eggs will not be present
Toxoplasma gondii can be transmitted to people via:
Casual contact with an infected intermediate host Casual contact with a cat Ingestion of undercooked meat Ingestion of unwashed fruits and vegetables C and D
Puppies that die at 2 days of age because of large numbers of larval nematodes migrating and molting in their lungs are most likely infected with which parasite?
Toxoscaris leonina Trichuris vulpis Trichostrongylus axei Toxocara canis Physaloptera
Moneizia spp. are not known to cause any disease or production loss in infected cattle. However, if treatment is desired, which of the following drugs would be expected to remove these parasites from infected cattle?
Ivermectin Eprinomectin Doramectin Albendazole Dichlorvos
The currently-available monthly heartworm preventatives protect dogs from acquiring infection with adult heartworms by:
Killing any larvae that may have been acquired by the dog in the preceding 30-day period Providing complete protection against any newly-introduced larval worms for more than 30 days following treatment Rendering the adult worms sterile, thereby preventing production of additional worms in an infected dog Altering the pheromone profile of treated dogs thereby discouraging feeding by vector mosquitoes Serving as a microfilaricide, thereby eliminating young worms before they are able to develop to adults in a treated dog
You examine a herd of longhorn cattle in southern Texas with skin lesions. Affected animals have profound hyperkeratotic lesions on their neck, brisket, and ventral abdomen and have lost weight and condition since this dermatitis developed. A skin scrape reveals Sarcoptes scabiei var bovis. What is the appropriate way to manage these cows?
Immediately report your findings to appropriate state and federal authorities No treatment is needed since this is a self-limiting condition and the animals will develop immunity and self-cure Treat the affected animals with a single application of a pour-on avermectin Treat the affected animals with a single application of a pyrethrin/pyrethroid Treat the affected animals with a single application of an organophosphate
Which of the following biting flies have been implicated as a biological vector of African horse sickness?
Anopheles Culex Culicoides Aedes Musca
A four-year-old mixed breed dog housed in a small, dirt-floored pen presents with a history of weight loss, diarrhea, and tenesmus. The feces is soft and contains bright red blood. What parasite is most likely to cause the symptoms described?
Dipylidium caninum Ancylostoma caninum Toxocara canis Trichuris vulpis Taenia pisiformis
Neurocystocercosis develops in people following ingestion of eggs of Taenia solium found in:
Undercooked meat of infected pigs Feces of infected pigs Feces of infected cows Feces of infected people Undercooked meat from infected cows
A client who just recently established a dairy herd is concerned about the high incidence of pinkeye among her cows. You tell her that the insect that transmits the infectious agent, Moraxella bovis, is Musca autumnalis. Which of the following is not true about Musca autumnalis?
Adult Musca autumnalis are similar in general appearance to house flies (Musca domestica). The adult feeds on tears, saliva, nasal mucus, and blood. Numbers can be controlled by piling manure into heaps to increase fermentation. Permethrins can be used topically for control. The eggs are laid on the cow's face along the eyelid margin.
The most complete medical treatment for a cat infected with Dipylidium caninum is:
Praziquantel, imidacloprid Praziquantel, pyrantel Pyrantel, fenbendazole Pyrantel, imidacloprid Fipronil, ivermectin

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National Board Practice Questions - Quiz 4

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