ZUKU Review Questions of the day

Question 1

A 2 year-old Hereford cow is presented with a 1-week history of blepharospasm, lacrimation and corneal opacity. There is a large central corneal abscess secondary to suspected infectious keratoconjunctivitis (pinkeye). What is an appropriate treatment plan?

A - Systemic enrofloxacin

B - Systemic long-acting oxytetracycline

C - Topical nitrofurazone

D - Subconjunctival gentamicin

E - Ophthalmic terramycin ointment once daily

Answer 1

B - Systemic long-acting oxytetracycline

Question 2

A 14-month old female beagle-mix dog is presented with several firm non-painful swellings attached to her ribs. A thoracic radiograph shows the image below. What is the clinical diagnosis?

A - Multiple cartilaginous exostoses

B - Osteochondrosis

C - Hypertrophic pulmonary osteopathy

D - Chondrosarcoma

E - Fibrosarcoma

Answer 2

A - Multiple cartilaginous exostoses

Question 3

Which organism determines the minimum temperature needed to pasteurize milk in the United States?

Answer Choices

A - Mycobacterium bovis

B - Listeria monocytogenes

C - Brucella abortus

D - Coxiella burnetii

E - Escherichia coli

Answer 3

D - Coxiella burnetii

Question 4

How does this decrease in prevalence affect the predictive value positive (PVP) of the best serologic test for pedunculated giblet disease?

Answer Choices

A - PVP depends on the number tested, not prevalence

B - PVP is affected by specificity, not prevalence

C - PVP increases as prevalence decreases

D - PVP decreases as prevalence decreases

E - PVP stays the same as prevalence decreases

Answer 4

D - PVP decreases as prevalence decreases

Question 5

A 3-year old Quarter horse/Appaloosa cross mare is presented on emergency because she collapsed in the last 30 minutes. The mare is recumbent and weak, with respiratory stridor, muscle fasciculations, sweating, prolapse of the third eyelid and her lips pulled back spasmodically, like a grin. The horse is hydrated and has had no recent history of colic. During the examination, she improves markedly and within 60 minutes stands and appears almost normal again with no treatment. What is the clinical diagnosis?

A - Myasthenia gravis

B - Epilepsy

C - Ryegrass staggers

D - Hyperkalemic periodic paralysis

E - Equine degenerative myelopathy

Answer 5

D. Hyperkalemic periodic paralysis

Question 6

A stray dog is presented after being hit by a car. The dog has hypotonic forelimbs and spastic paresis in the hinds. All four limbs have proprioceptive deficits and sensation loss-signs are worse in the forelimbs. Where is the lesion?

A - Cranial cervical: C1-C5

B - Cannot say without cutaneous trunci reflex results

C - Lumbosacral L4-S3

D - Thoracolumbar T3-L3

E - Cervicothoracic: C6-T2

Answer 6

E - Cervicothoracic: C6-T2

Question 7

In September, a 5-year-old Quarterhorse mare is presented with a 5-day history of left head tilt, facial paralysis, depression, and stumbling. The horse is ataxic and knuckles on both forelegs, worse on the left. There is muscle atrophy of the left pectorals and right hindquarters and strips of localized spontaneous sweating over the left trunk. The horse is immunoblot test-positive for Sarcocystis neurona. What prognosis is given to the owner if she elects to treat the horse?

A - Only 25% of treated horses return to normal function

B - 50% of treated horses recover completely

C - Prognosis is good if treated with doxycycline

D - At least 60% of treated horses improve

E - Prognosis is grave

Answer 7

D. At least 60% of treated horses improve

Question 8

How many cows should be in estrus each day in a pen of 122 non-pregnant heifer cows?

A - 5 to 7

B - 2 to 4

C - 7 to 8

D - 9 to 11

E - 4 to 6

Answer 8

A - 5 to 7 heifers should be in estrus on any given day.

Question 9

What are ongoing losses in fluid therapy?

A - Urine output

B - Fluids given minus extracellular volume estimate

C - The tears I shed when I can’t make sense of fluid calculations

D - Vomit and diarrhea

E - Percent dehydration multiplied by body weight

Answer 9

D - Vomit and diarrhea

Question 10

Fumonisin intoxication is primarily associated with which clinical signs?

A - Leukoencephalomalacia, hypertension

B - Salivation, retching

C - Estrogenism, vulvovaginitis

D - Vomiting, immunosuppression

E - Terminal necrosis of extremities, gangrene

Answer 10

A - Leukoencephalomalacia, hypertension

Question 11

A dozen young chickens at a broiler-raising facility are found dead on their backs and sides with no premonitory signs. Other birds appear cyanotic, with distended and reddened abdomens and congested blood vessels. Affected birds have an increased respiratory rate and reduced exercise tolerance. Necropsy of a dead chicken shows typical lesions below. What is the clinical diagnosis?

A - Flip over disease

B - Ascites syndrome

C - Spontaneous cardiomyopathy

D - Infectious bursal disease

E - Dissecting aneurysm

Answer 11

B - Ascites syndrome

Question 12

A 4-year old quarterhorse presents with a 3 week history of diffuse patchy alopecia on the ventral midline and face, including a “bulls-eye” lesion in the center of the forehead. There is a mild conjunctivitis and uveitis OU (both eyes). A punch skin biopsy looks like the image below. What is the most appropriate treatment?

A - Ivermectin now, repeat in 4 months

B - Trichlorfon drench, antibiotic ophthalmic ointment TID

C - Do nothing

D - Corticosteriods, benzimidazole-piperazine q. 12 weeks

E - Topical DMSO, Oxybendazole q. 8 weeks

Answer 12

A - Ivermectin now, repeat in 4 months

Question 13

Fractures of the proximal sesamoid bones in horses are often associated with damage to which structure?

Answer Choices

A - Suspensory ligament

B - Superior check ligament

C - Deep digital flexor tendon

D - Superficial digital flexor tendon

E - Impar ligament

Answer 13

A - Suspensory ligament

Question 14

Which one of the following diseases is characterized by schistocytes on a complete blood count?

A - Systemic lupus erythematosus

B - Cyanocobalamin deficiency

C - Disseminated intravascular coagulation

D - Methemoglobinemia

E - Acetaminophen toxicity

Answer 14

C - Disseminated intravascular coagulation

Question 15

The Animal Welfare Act is enforced by which U.S. government agency?

A - Institutional Animal Care and Use Committee (IACUC)

B - Department of Agriculture (USDA)

C - Food and Drug Administration (FDA)

D - National Institute of Health (NIH)

E - Centers for Disease Control and Prevention (CDC)

Answer 15

B - Department of Agriculture (USDA)

Question 16

Two bucket-fed veal calves are depressed and stunted and have sticky feces coating their hindquarters. Fluid-splashing sounds are audible during auscultation over the left flank when a calf is drinking. Passage of a stomach tube obtains a rancid-smelling liquid with a pH of 5.2 [N=5.9-6.2] Which one of the following choices is the most appropriate treatment?

A - Remove fermented rumen contents, flush with saline

B - Wean affected calves; Shift to bottle-feeding for well calves

C - Vitamin E/Selenium injections, plus dietary supplements

D - Cull affected calves

E - Inoculate rumen fluid from a healthy cow into calf by stomach tube

Answer 16

A - Remove fermented rumen contents, flush with saline

Question 17

A petting zoo is experiencing a high mortality outbreak among young chickens, guinea fowl, pheasants and turkeys. Affected birds huddle near heat sources. They are off feed and weak, with whitish feces pasted around their vents (diarrhea). On necropsy, lesions include unabsorbed yolk sacs and gray nodules in the liver, spleen, lungs, heart, gizzard, and intestine. There are firm, cheesy cecal cores. This presentation is highly suggestive of which diagnosis?

A - Campylobacter jejuni

B - Salmonella pullorum

C - Avian spirochetosis

D - Histomoniasis

E - Coronaviral enteritis

Answer 17

B - Salmonella pullorum

Question 18

A three year old male neutered Weimaraner dog is presented with a two day history of worsening anorexia, lethargy, cough and exercise intolerance. On physical exam, the mucous membranes are pale with a few petechiae. TPR and coagulation profile is attached. Which one of the following choices is the most appropriate diagnosis?

A - Disseminated intravascular coagulation (DIC)

B - Anticoagulant rodenticide toxicity

C - Von Willebrand’s disease

D - Idiopathic thrombocytopenia

E - Neonatal isoerythrolysis

Answer 18

B - Anticoagulant rodenticide toxicity

Question 19

During a routine immunization visit for a 2 year-old neutered male Newfoundland dog, a systolic ejection-type (crescendo-decrescendo) murmur is detected. It is audible loudest on the left side of the chest between the 2nd and 5th intercostal (IC) space and at the thoracic inlet lateral to the trachea. Which condition is highest on a differential diagnosis list?

A - Pulmonic stenosis

B - Mitral dysplasia

C - Tricuspid dysplasia

D - Aortic stenosis

E - Patent ductus arteriosus (PDA)

Answer 19

D - Aortic stenosis

Question 20

Which one of the following antibiotics is the treatment of choice in the face of a vibriosis abortion storm?

A - Tetracycline

B - Aminoglycoside

C - Cephalosporin

D - Fluoroquinolone

E - Chloramphenicol

Answer 20

A - Tetracycline

Question 21

What is the neuroanatomic cause of extensor rigidity in the forelimbs of a cat with Schiff-Sherrington syndrome?

A - Subdural white matter compression at C6-T3
B - Brachial plexus trauma
C - Interruption of inhibitory neuron input from lumbar spinal cord
D - Polyradiculoneurtitis of peripheral nerve sheaths at cervical intumescence
E - Damage to thoracic spinocerebellar tracts in superficial white matter

Answer 21

C - Interruption of inhibitory neuron input from lumbar spinal cord

Question 22

After a stressful period of cold winter weather in northern Colorado, a petting zoo reports that one adult mule deer out of a herd of eight is sick. On physical exam, the animal has a fever, increased respiratory rate and pulmonary rales, suggesting aspiration pneumonia. Which one of the following choices is the most appropriate next step to take?

A - Report case to state health department

B - Treat sick animal with high-dose penicillin

C - Cull sick animal, vaccinate herd against histophilosis

D - Treat herd with high-dose penicillin

E - Perform an intradermal tuberculin test

Answer 22

A - Report case to state health department

Question 23

An 8-year old dog is presented with a 2-week history of occasional cough and moderate exercise intolerance. On physical exam there are increased lung sounds. Thoracic radiographs show right ventricular enlargement. Lab testing shows that the dog is heartworm antigen-positive, anemic and has proteinuria on urinalysis. What class of heartworm disease is this?
A - Class III
B - Class I
C - Class II
D - Class IV
E - Cannot say without more information

Answer 23

C - Class II