NAVLE
1. A 6-year-old Thoroughbred gelding was involved in a B) Right Facial (VII) Nerve
motor vehicle collision while riding in a trailer three
weeks ago. Physical examination shows heling super-
ficial abrasions on the face. A photograph is shown.
Injury to which of the following nerves is the most
likely underlying causes of these findings?
A) Left Facial (VII) Nerve
B) Right Facial (VII) Nerve
C) Left Trigeminal (V) Nerve
D) Right Trigeminal (V) Nerve
E) Left infraorbital nerve
F) Right Infraorbital Nerve
2. In cases of pyothorax in cats, what type of microor- C) Obligate anaerobes
ganisms are most frequently cultured from pleural
fluid?
A) Chlamydiae
B) Mycoplasmas
C) Obligate anaerobes
D) Spirochetes
E) Yeasts
3. A 6-year-old male Cocker Spaniel has recurrent otitis D) Pseudomonas aerugi-
externa. Microscopic examination of a smear of puru- nosa
lent ear discharge shows large numbers of rod shaped
bacteria. What is the most likely causative organism?
A) Escheria coli
B) Klebsiella spp
C) Pasturella multocida
D) Pseudomonas aeruginosa
E) Staphylococcus intermedius
, NAVLE
4. An 82-lb (37 kg) 8-year-old MN German Shepherd mix A) Decreased Cardiac Out-
is being evaluated for a 2 month history of decreased put
exercise tolerance. The client reports that the dog had
two episodes of profound weakness on walks during
the past week. The dog seems comfortable at home
but his "heart is always racing." Two years ago the dog
was diagnosed by another vet with hypothyroidism
and prescribed oral levothyroxine 0.8 mg twice daily.
Dosage was reevaluated one month after initiation
and was determined to be appropriate. Appetite, uri-
nation, and bowel movements are normal. BCS is 6/9.
Temp 101.2 F and HR 180 bpm. The dog is panting.
Pulse deficits are occuring 3-5x/min. No other abnor-
malities are noted. CBC, serum chemistry, and urinal-
ysis are WNL. Which of the following is the most likely
cause of episodic weakness in this dog?
A) Decreased cardiac output
B) Electrolyte imbalance
C) Neurogenic weakness
D) osteoarthritis
E) ventilation-perfusion mismatch
5. Fifteen of a group of 200, 7-month old feedlot calves B) Histophilus somni
are lame. The calves arrived at the feedlot approxi-
mately 1 month ago, and one week later 40 of the an-
imals developed pneumonia. These calves were treat-
ed with oxytetracycline, and pneumonia appeared to
resolve. On Physical examination, the affected calves
have swellings in the carpi, tarsi, and stifles with dis-
tension of associated tendon sheaths and a stiff gait.
Two calves are euthanized. Postmorten examination
shows fibrinous pleuritis and papillary muscle necro-
, NAVLE
sis. Which of the following organisms is the most likely
cause of these agents?
A) Arcanobacterium (Actinomyces) pyogenes
B)Histophilus somni (Haemophilus somnus)
C) Mannheima (Pasturella) haemolytica
D) Pasturella multocida
E) Salmonella typhimurium
6. A 2-year old spayed female indoor/outdoor Singapura C) Trial of hypoallergenic
cat has had several facial pruritis for the past two diet.
weeks. Vaccinations are up-to-date and the cat is on
a monthly regimen of topical imidaclorid. Examina-
tion of the skin shows linear ulcers along the ventral
aspects of both mandibles and miliary scabs on the
ventral and lateral aspects of the neck. The remain-
der of the dermis appears normal. Deep and surface
skin scrapings and dermatophyte culture are nega-
tive. Which of the following is the most appropriate
next diagnostic step.
A) Serum Allergy Testing
B) Thyroid function testing
C) Trial of hypoallergenic diet
D) Trial of IM methylprednisolone
E) Trial of intramuscular cyclosporine
7. A 9-month-old intact male Siberian Husky dog is being D) Ivermectin
evaluated because of a cough of 2 week duration.
These lesions at the carina are seen on bronchoscopic
exam. Which of the following is the most appropriate
pharmacotherapy?
A) Amoxicillin
B) Chlorpheniramine
, NAVLE
C) Dextromethorphan
D) Ivermectin
E) Prednisone
8. A 5-year old Simmental cow who is used as a donor B) Administration of pro-
for embryo transfer is evaluated because of the acute caine penicillin G intra-
onset of anorexia and lethargy. She has been flushed muscularly
six times; the most recent flushing occurred 10 days
ago. Rectal temperature is 104.0 F. During physical
exam the cow is reluctant to moce and periodically
kicks at her abdomen. ON rectal palpation the left kid-
ney is grossly enlarged and has a smoot texture. When
stimulated to urinate, the urine is grossly hematuric;
numerous blood clots and fibrin are present. Which of
the following is the most appropriate treatment?
A) administration of gentamicin intravenously
B) Administration of procaine penicillin G intramuscu-
larly
C) Long-term catheterization of the bladder
D) Surgical removal of the enlarged kidney
E) No treatment is indicated.
9. A 13 year old cat has a large, firm mass of the third E) 90%
mammary gland on the right side. Which of the fol-
lowing represents the likelihood that this tumor is
malignant
A) 10%
B) 25%
C) 40%
D) 60%
E) 90%
1. A 6-year-old Thoroughbred gelding was involved in a B) Right Facial (VII) Nerve
motor vehicle collision while riding in a trailer three
weeks ago. Physical examination shows heling super-
ficial abrasions on the face. A photograph is shown.
Injury to which of the following nerves is the most
likely underlying causes of these findings?
A) Left Facial (VII) Nerve
B) Right Facial (VII) Nerve
C) Left Trigeminal (V) Nerve
D) Right Trigeminal (V) Nerve
E) Left infraorbital nerve
F) Right Infraorbital Nerve
2. In cases of pyothorax in cats, what type of microor- C) Obligate anaerobes
ganisms are most frequently cultured from pleural
fluid?
A) Chlamydiae
B) Mycoplasmas
C) Obligate anaerobes
D) Spirochetes
E) Yeasts
3. A 6-year-old male Cocker Spaniel has recurrent otitis D) Pseudomonas aerugi-
externa. Microscopic examination of a smear of puru- nosa
lent ear discharge shows large numbers of rod shaped
bacteria. What is the most likely causative organism?
A) Escheria coli
B) Klebsiella spp
C) Pasturella multocida
D) Pseudomonas aeruginosa
E) Staphylococcus intermedius
, NAVLE
4. An 82-lb (37 kg) 8-year-old MN German Shepherd mix A) Decreased Cardiac Out-
is being evaluated for a 2 month history of decreased put
exercise tolerance. The client reports that the dog had
two episodes of profound weakness on walks during
the past week. The dog seems comfortable at home
but his "heart is always racing." Two years ago the dog
was diagnosed by another vet with hypothyroidism
and prescribed oral levothyroxine 0.8 mg twice daily.
Dosage was reevaluated one month after initiation
and was determined to be appropriate. Appetite, uri-
nation, and bowel movements are normal. BCS is 6/9.
Temp 101.2 F and HR 180 bpm. The dog is panting.
Pulse deficits are occuring 3-5x/min. No other abnor-
malities are noted. CBC, serum chemistry, and urinal-
ysis are WNL. Which of the following is the most likely
cause of episodic weakness in this dog?
A) Decreased cardiac output
B) Electrolyte imbalance
C) Neurogenic weakness
D) osteoarthritis
E) ventilation-perfusion mismatch
5. Fifteen of a group of 200, 7-month old feedlot calves B) Histophilus somni
are lame. The calves arrived at the feedlot approxi-
mately 1 month ago, and one week later 40 of the an-
imals developed pneumonia. These calves were treat-
ed with oxytetracycline, and pneumonia appeared to
resolve. On Physical examination, the affected calves
have swellings in the carpi, tarsi, and stifles with dis-
tension of associated tendon sheaths and a stiff gait.
Two calves are euthanized. Postmorten examination
shows fibrinous pleuritis and papillary muscle necro-
, NAVLE
sis. Which of the following organisms is the most likely
cause of these agents?
A) Arcanobacterium (Actinomyces) pyogenes
B)Histophilus somni (Haemophilus somnus)
C) Mannheima (Pasturella) haemolytica
D) Pasturella multocida
E) Salmonella typhimurium
6. A 2-year old spayed female indoor/outdoor Singapura C) Trial of hypoallergenic
cat has had several facial pruritis for the past two diet.
weeks. Vaccinations are up-to-date and the cat is on
a monthly regimen of topical imidaclorid. Examina-
tion of the skin shows linear ulcers along the ventral
aspects of both mandibles and miliary scabs on the
ventral and lateral aspects of the neck. The remain-
der of the dermis appears normal. Deep and surface
skin scrapings and dermatophyte culture are nega-
tive. Which of the following is the most appropriate
next diagnostic step.
A) Serum Allergy Testing
B) Thyroid function testing
C) Trial of hypoallergenic diet
D) Trial of IM methylprednisolone
E) Trial of intramuscular cyclosporine
7. A 9-month-old intact male Siberian Husky dog is being D) Ivermectin
evaluated because of a cough of 2 week duration.
These lesions at the carina are seen on bronchoscopic
exam. Which of the following is the most appropriate
pharmacotherapy?
A) Amoxicillin
B) Chlorpheniramine
, NAVLE
C) Dextromethorphan
D) Ivermectin
E) Prednisone
8. A 5-year old Simmental cow who is used as a donor B) Administration of pro-
for embryo transfer is evaluated because of the acute caine penicillin G intra-
onset of anorexia and lethargy. She has been flushed muscularly
six times; the most recent flushing occurred 10 days
ago. Rectal temperature is 104.0 F. During physical
exam the cow is reluctant to moce and periodically
kicks at her abdomen. ON rectal palpation the left kid-
ney is grossly enlarged and has a smoot texture. When
stimulated to urinate, the urine is grossly hematuric;
numerous blood clots and fibrin are present. Which of
the following is the most appropriate treatment?
A) administration of gentamicin intravenously
B) Administration of procaine penicillin G intramuscu-
larly
C) Long-term catheterization of the bladder
D) Surgical removal of the enlarged kidney
E) No treatment is indicated.
9. A 13 year old cat has a large, firm mass of the third E) 90%
mammary gland on the right side. Which of the fol-
lowing represents the likelihood that this tumor is
malignant
A) 10%
B) 25%
C) 40%
D) 60%
E) 90%
