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NAVLE VetPrep/Zuku Daily Questions & Answers Solved 100% Correct!!
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NAVLE VetPrep/Zuku Daily Questions & Answers Solved 100% Correct!!
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Name: Score:82 Multiple choice questions
Term 1 of 82
Pentobarbital is the principal active ingredient in euthanasia solutions.
What is the mechanism of action for pentobarbital to cause death?
- Severe, rapid drop in blood pressure
- Cardiac arrest
- CNS depression
- Liver failure
- Oxygen depletion
Term 2 of 82
Hemoglobin concentration is roughly what percentage of packed cell volume (PCV) in most
domestic animals?
- 33% of PCV
- 25% of PCV
- 50% of PCV
- 10% of PCV
,Term 3 of 82
The results of a routine fecal examination from a seven-year-old male neutered mixed breed dog
is shown below (Trichuris sp, looks like football, whipworm egg).
What is the treatment of choice?
- Fenbendazole
- Diethyl carbamizine
- Metronidazole
- Piperazine
- Ivermectin
Term 4 of 82
You are doing a summer externship in South America and performing physical exams on a variety
of animals. You are performing a fundic exam on the eye of a horse and note what appears to be
a worm migrating through the conjunctiva (really small white worms). Because of the location and
appearance of this parasite, you suspect this is which of the following?
- Oxyuris
- Dirofilaria
- Toxocara
- Thelazia
,Term 5 of 82
A dog presents with acute onset vomiting, hemorrhagic diarrhea and fever. On fecal examination,
you find many large fluke eggs. You question the owner and discover that the dog was recently in
Oregon on a boating trip. What agent is most likely causing the clinical signs in this dog?
A - Nanophyetus salmincola
B - Rickettsia rickettsii
C - Oxytrema silicula
D - Neorickettsia helminthoeca
e - ivermectin in early fall
This is a cattle warble called Hypoderma. The 2 species are H. bovis and H. lineatum. They
undergo a long migration in tissues and only emerge from the back of the animal in spring.
The crucial treatment time is early fall when larvae are just beginning to migrate in tissues.
Organophosphates or one of the macrocyclic lactones (ivermectin, doramectin,
eprinomectin or moxidectin) are effective.
D - Neorickettsia helminthoeca
The correct answer is Neorickettsia helminthoeca. This rickettsial organism is the causative
agent of salmon poisoning. It is carried in the fluke, Nanophyetus salmincola, which
requires the snail, Oxytrema silicula in its life cycle. The snail is what confines occurrence of
salmon poisoning to the northwest coast.
E - Toxoplasma gondii
These can cause severe abortion storms in sheep. Clinical signs are bright to dark red
cotyledons (where blood exchange occurs with mother) with white foci of necrosis.
D - Thelazia
Thelazia is a genus of nematode worms (eyeworms) which are found in the ocular tissues.
Adults are usually found in the eyelids, tear glands, tear ducts, or the nictitating membrane.
They may be found in the eyeball itself under the conjunctiva or in the vitreous. Thelazia are
transmitted by Diptera (flies) which do not bite but feed on tears.Toxocara, which causes
ocular larval migrans, usually causes granulomas which may be seen in the retina and
appear more circular.
, Term 6 of 82
A 50-lb mixed breed dog is heavily sedated with dexmedetomine and butorphanol given
intravenously for repair of a laceration.
His mucous membranes are pale, capillary refill time is 2 seconds, heart rate is 56 beats per
minute [N=70-120 bpm], respiratory rate is 10 breaths per minute [N=18-34 brpm].
Which of the following is the next best step?
A - Administer an NSAID IV to counter surgical pain
B - Place an intravenous catheter and bolus 10 ml/kg of lactated Ringer's
C - Perform an electrocardiogram to determine the type of bradycardia
D - Give an anti-cholinergic intramuscularly for the slow heart rate
E - No treatment is necessary, this is normal with alpha-2 agonists
Term 7 of 82
A five-year-old female spayed Cocker Spaniel is presented with a drooping right ear and lip and
drooling.
There is ptosis OD (right eye) but the remainder of the physical exam is unremarkable. She is
otherwise bright, alert, and responsive.
What anatomic structure is damaged?
A - Trigeminal nerve
B - Facial nerve
C - Left side inner ear
D - Left side medulla, motor tract
E - Right side cranial cervical ganglion
Pyrrolizidine alkaloid
The correct answer is pyrrolizidine alkaloid. The clinical signs described are typical for
pyrrolizidine alkaloid toxicity. Consumption of this plant typically results in abnormalities in
hepatic cell division; thus resulting in large hepatocytes known as megalocytosis.
Acidifying diet
A - Cervicothoracic: C6-T2
B- Facial nerve
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