1
NAVLE Practice Questions
E) Remove the feed; submit samples for mycotoxin testing
R
A commercial swine operation in Iowa reports an outbreak in October among
E
weanling and grower-finisher pigs with 25 dead animals and 54 more exhibiting
acute onset of dyspnea and weakness. Twenty-four hours after the first pigs
H
showed clinical signs, some of the worst affected animals became recumbent and
G
died.
I
Physical exam of affected pigs shows cyanosis of the mucous membranes and
H
weakness. Necropsy of a dead animal shows marked pulmonary edema and
hydrothorax.
G
The farm is a farrow to finish operation, with same-age animals penned and fed
N
together. The ration for the affected pens is a mixture of corn, rolled oats, dried
I
whey, soybean meal and a vitamin/mineral pack.
Y
Weanlings get water from nipple waterers and older animals drink from stainless
L
steel finishing cup waterers, one per pen. The water supply comes from an
F
unchlorinated well that supplies the whole farm. Barns have concrete floors and
feature hybrid ventilation with wall-mounted variable speed fans and moveable
insulated sidewall curtains, roof-mounted ventilation chimneys, and fresh air
intakes in the ceilings.
What is the best action to take?
A) Report outbreak to state/provincial veterinarian; cull affected animals
, 2
B) Check feces for embryonated eggs; remove access to soil/earthworms; treat
survivors with ivermectin
C) Culture nasopharynx of dead pigs; isolate and Rx affected pigs with tylosin
pending culture/sensitivity results
R
D) Checked humidity, air exchange rates, and positive/negative pressure of
E
affected barns
H
E) Remove the feed; submit samples for mycotoxin testing
IG
A) Infectious bursal disease
H
What is the presumptive diagnosis in a chicken with the following necropsy
G
finding?
A) Infectious bursal disease
N
B) Marek's disease
I
C) Renal dystrophy
Y
D) Histomoniasis
L
E) Avian spirochetosis
C) Neomycin
F
Which of these drugs has the greatest potential for causing acute renal failure in
the horse?
, 3
A) Xylazine
B) Diphenhydramine
C) Neomycin
D) Oxytetracycline
R
E) Dexamethasone
HE
E) Full body lyme sulfur dip
G
A middle aged MN stray cat is left on the doorstep of your clinic. The cat has a
I
large dry crusted area of alopecia over his nose. A skin scraping of the area is
H
negative. The lesion fluoresces under Wood's lamp examination. Which of the
G
following would be the best treatment?
A) Povidone-iodine scrub
N
B) Lufenuron
I
C) Doxycycline
Y
D) Athlete's foot cream (clotrimazole)
L
E) Full body lyme sulfur dip, itraconazole
F
E) Administer Ivermectin twice annually, once in the early summer and again in
the fall
You are asked to perform a necropsy on a 17-year old Standardbred mare on a
large horse ranch. Although not related to the cause of death, you notice the
, 4
parasite shown in the image within the stomach. You tell the owner that this
parasite is also responsible for the eggs that he sees seasonally on the hair of the
front legs of his horses. The owner asks what should be done about this. You
discuss the importance of promptly cleaning up feces and transporting feces
R
away. In addition, which of the following is the most appropriate recommendation
E
for ongoing control of this parasite?
H
A) Administer Ivermectin twice annually, once in the early spring and again in the
winter
G
B) Administer fenbendazole twice annually, once in the early summer and again in
I
late summer
H
C) Administer fenbendazole twice annually, once in the early spring and again in
G
the fall
D) There is no need to treat these parasites because they are not associated with
N
disease in horses
I
E) Administer Ivermectin twice annually, once in the early summer and again in
Y
the fall
FL
B) Topical cyclosporine and a topical steroid
A 6-year old West Highland White Terrier comes in to see you for the
mucopurulent ocular discharge as seen in the photo below. A Schirmer tear test
shows no tear production. What is the treatment of choice for chronic canine
keratoconjunctivitis sicca?
NAVLE Practice Questions
E) Remove the feed; submit samples for mycotoxin testing
R
A commercial swine operation in Iowa reports an outbreak in October among
E
weanling and grower-finisher pigs with 25 dead animals and 54 more exhibiting
acute onset of dyspnea and weakness. Twenty-four hours after the first pigs
H
showed clinical signs, some of the worst affected animals became recumbent and
G
died.
I
Physical exam of affected pigs shows cyanosis of the mucous membranes and
H
weakness. Necropsy of a dead animal shows marked pulmonary edema and
hydrothorax.
G
The farm is a farrow to finish operation, with same-age animals penned and fed
N
together. The ration for the affected pens is a mixture of corn, rolled oats, dried
I
whey, soybean meal and a vitamin/mineral pack.
Y
Weanlings get water from nipple waterers and older animals drink from stainless
L
steel finishing cup waterers, one per pen. The water supply comes from an
F
unchlorinated well that supplies the whole farm. Barns have concrete floors and
feature hybrid ventilation with wall-mounted variable speed fans and moveable
insulated sidewall curtains, roof-mounted ventilation chimneys, and fresh air
intakes in the ceilings.
What is the best action to take?
A) Report outbreak to state/provincial veterinarian; cull affected animals
, 2
B) Check feces for embryonated eggs; remove access to soil/earthworms; treat
survivors with ivermectin
C) Culture nasopharynx of dead pigs; isolate and Rx affected pigs with tylosin
pending culture/sensitivity results
R
D) Checked humidity, air exchange rates, and positive/negative pressure of
E
affected barns
H
E) Remove the feed; submit samples for mycotoxin testing
IG
A) Infectious bursal disease
H
What is the presumptive diagnosis in a chicken with the following necropsy
G
finding?
A) Infectious bursal disease
N
B) Marek's disease
I
C) Renal dystrophy
Y
D) Histomoniasis
L
E) Avian spirochetosis
C) Neomycin
F
Which of these drugs has the greatest potential for causing acute renal failure in
the horse?
, 3
A) Xylazine
B) Diphenhydramine
C) Neomycin
D) Oxytetracycline
R
E) Dexamethasone
HE
E) Full body lyme sulfur dip
G
A middle aged MN stray cat is left on the doorstep of your clinic. The cat has a
I
large dry crusted area of alopecia over his nose. A skin scraping of the area is
H
negative. The lesion fluoresces under Wood's lamp examination. Which of the
G
following would be the best treatment?
A) Povidone-iodine scrub
N
B) Lufenuron
I
C) Doxycycline
Y
D) Athlete's foot cream (clotrimazole)
L
E) Full body lyme sulfur dip, itraconazole
F
E) Administer Ivermectin twice annually, once in the early summer and again in
the fall
You are asked to perform a necropsy on a 17-year old Standardbred mare on a
large horse ranch. Although not related to the cause of death, you notice the
, 4
parasite shown in the image within the stomach. You tell the owner that this
parasite is also responsible for the eggs that he sees seasonally on the hair of the
front legs of his horses. The owner asks what should be done about this. You
discuss the importance of promptly cleaning up feces and transporting feces
R
away. In addition, which of the following is the most appropriate recommendation
E
for ongoing control of this parasite?
H
A) Administer Ivermectin twice annually, once in the early spring and again in the
winter
G
B) Administer fenbendazole twice annually, once in the early summer and again in
I
late summer
H
C) Administer fenbendazole twice annually, once in the early spring and again in
G
the fall
D) There is no need to treat these parasites because they are not associated with
N
disease in horses
I
E) Administer Ivermectin twice annually, once in the early summer and again in
Y
the fall
FL
B) Topical cyclosporine and a topical steroid
A 6-year old West Highland White Terrier comes in to see you for the
mucopurulent ocular discharge as seen in the photo below. A Schirmer tear test
shows no tear production. What is the treatment of choice for chronic canine
keratoconjunctivitis sicca?
