VP Timed Qs_09/02

Question 1

Most common ocular tumor in cattle

Answer 1

Squamous cell carcinoma

Question 2

Marek’s dz is caused by what type of agent

Answer 2

Herpesvirus

Question 3

Cause of canine hypothyroidism

Answer 3

Immune-mediated lymphocytic thyroiditis

Question 4

In which dog breed is ivermectin C/I and why

Answer 4

Collies; homozygous mutation in the multidrug resistance (MDR) gene –> allows ivermectin to cross blood brain barrier

Question 5

Etiologic agent for Psittacine Beak and Feather Dz (PBFD); what test to run to confirm it

Answer 5

Circovirus-1 and circovirus-2; PCR probe of whole blood for circovirus DNA

Question 6

In horses, vegetative lesions of __________ and _________ heart valves are frequently encountered with __________.

Answer 6

mitral and aortic; bacterial endocarditis

Question 7

Nursing beef calves; suddenly developed blindness and dullness; normal TPR; stomach tube –> rumen contents with oil sheen; open drum with used motor oil nearby. What condition to tx for?

Answer 7

Lead poisoning

Question 8

Lame cow; deep sole abscess on the LF medial claw; most effective tx

Answer 8

Debride abscess, apply wooden hoof block to LF lateral claw

Question 9

Guinea pig w/ resp distress and weight loss; shares 4x6 foot enclosure with a rabbit that appears healthy; what is the etiology

Answer 9

Bordetella bronchiseptica

Question 10

6-month Lab Retriever with failure to thrive and stranguria; U/S shows small liver and stones in the urinary bladder; abd rads show no visible stones

Answer 10

The dog has urate stones in its bladder

Question 11

Herd of pigs –> unthriftiness, slow growth, and occasional deaths; (some) posterior ataxia or paralysis; herd previously infected w/ Staphanurus dentatus; how to Dx?

Answer 11

Urinalysis

Question 12

S/E is caused by ketamine

Answer 12

Increase in muscle tone

Also increase in sympathetic tone –> increase in HR, arterial BP and cardiac output; also apneustic breathing pattern and can induce seizures

Question 13

4-yr old TB race horse; blood on nostrils immediately after racing; previously healthy; presence of rats in the barn, but no documented exposure to rodenticides; best tx to Dx the most likely condition?

Answer 13

Bronchoscopy

Question 14

2-yr old intact male Blue Heeler kicked by a cow; presents w/ resp distress (orthopneic posture, resp pattern of shallow, rapid breaths w/ abdominal component); T 104.1 deg F, HR 220, RR 110, MM pale pink, CRT 1.5 s, systolic BP 135 mmHg; obvious bruising and edema on L thorax & abrasion on L side of face; CBC/ chemistry profiles unremarkable. Blood gas analysis show hypoxemia and resp acidosis. What is the next best step?

Answer 14

Bilateral thoracocentesis

Question 15

7 yr old cat, grade II-III/VI L parasternal systolic heart murmur, heart rhythm at 240 bpm, femoral pulses strong and synchronous; what is the top concern?

Answer 15

Hypertrophic cardiomyopathy (most common cause of heart murmur in cats)

Question 16

Cat have fallen from a high rise; presents w/ dyspnea, blood and abrasions around mouth, and decreased lung sounds dorsally. What to do next?

Answer 16

Thoracocentesis

Traumatic pneumothorax; thoracocentesis prior to any tx or dx tests

Question 17

Turkey flock; some has crusty, nodular lesions on the head and neck; some lesions are coalescing, many are scabbed; no other Cx, no mortality; fowlpox suspected based on Cx, small population affected, and lack of mortality; best method to stop the spread of dz?

Answer 17

Vaxx all turkeys except those naturally affected

Question 18

Neonatal isoerythrolysis in a foal most likely to occur in what scenario?

Answer 18

Foal ingests colostrum from an Aa- mare bred to an Aa+ stallion

Question 19

If you lyse a mature CL, when would you expect to see estrus in a cow?

Answer 19

3 days

Question 20

Causative agent for canine parvovirus

Answer 20

CPV-2

Question 21

3-wk old piglets show shifting leg lameness; have swollen joints in all legs, T 107.0F (41.7C), dyspneic; necropsy shows fibrinopurulent pleuritis and peritonitis. What is the most likely dx?

Answer 21

Glaesserella parasuis

Question 22

Ave life span of mice

Answer 22

1.5 yrs

Question 23

15-yr old mare w/ mild, acute laminitis. What tx?

Answer 23

Phenoxybenzamine

Alpha-adrenergic antagonist, promotes vasodilation and restoration of blood flow to digits; Steroids (prednisone) C/I in laminitis!

Question 24

12-yr old TB horse w/ foot problem; hollow sound over the hoof wall when tapped near the toe; cavity between the hoof wall and underlying lamina along the white line; hoof quality is poor and crumbling; no evidence of laminitis; what is the condition (common name)

Answer 24

Seedy toe

Question 25

What membrane is “slipped” when diagnosis pregnancy by rectal palpation in a cow?

Answer 25

Chorioallantois

Question 26

How many legs do lice have? What sp are sucking lice? Biting lice?

Answer 26

6 legs; Anoplura = sucking lice; Mallophaga = biting lice

Question 27

Causes splenic dilation and decreased Hgb concentration

Answer 27

Acepromazine

Question 28

Causative agent of Rocky Mountain Spotted Fever

Answer 28

Rickettsia ricketsii

Question 29

Equine encephalomyelitis w/ the least mortality in horses showing Cx of infxn?

Answer 29

Western equine encephalomyelitis = 50%

VEE = 75%
EEE = 90%

Question 30

Cattle being shipped is tested for TB intradermally in the caudal fold of each animal then return to the farm 48 hrs later to read the result. One cow is exhibiting very mild thickening at the injection site. The rest has no swelling, sensitivity nor increased skin thickness at the injection sites. What is the next best step.

Answer 30

Wait another 24 hrs and read the TB tests again

Question 31

Which animals are induced ovulators

Answer 31

Cats, ferrets and rabbits (also camelids)

Question 32

Newly weaned piglets show snorting, sneezing, ocular discharge and epistaxis. Necropsy showed atrophy of nasal turbinates. What would you find in the culture of the nasal passages of the affected pigs?

Answer 32

Pasteurella multocida or Bordetella bronchiseptica (atrophic rhinitis)

Question 33

In what dog breed is systemic aspergillosis seen without apparent resp tract involvement

Answer 33

German Shepherd

Question 34

4-yr old cat not eating has 104.2F (40.1C) temp; abdomen mildly distended; abdominocentesis reveals serosanguinous fluid; string anchored under the base of the tongue; what test will confirm clinical suspision?

Answer 34

Compare glucose of peripheral blood to glucose of abdominal effusion

Question 35

In BVD, what is the presentation of the fetus if infected at less than 125 days gestation vs more than 170 days gestation?

Answer 35

<125 d = early embryonic death, fetal death, abortion, congenital defects, mummification, OR persistently infected
>170d = abortion, weak calf, and abnormal calf

Question 36

Mode of transmission of brucellosis in pigs

Answer 36

Venereal transmission, and through aborted fetuses

Question 37

4 yr old cow, 2-d hx of depression, anorexia, fever, conscious proprioceptive deficits, R-sided head tilt, and head-pressing. CN deficits = R ear drooping, R eye appears “dropped”, drooling from R side of mouth. Where is the lesion?

Answer 37

R side and intracranial

Head tilt + CN deficits –> on the side of lesion
Conscious proprioceptive deficits + head pressing + depression –> intracranial problem