A 10-year old male castrated cat that you have previously diagnosed with
hyperthyroidism presents to you for acute onset of blindness. You perform an
ophthalmic exam and note retinal hemorrhage. What diagnostic test should you
perform first?
A. Blood pressure
B. Total T4 levels
C. Serum BUN and creatinine
D. Free T4 levels by equilibrium dialysis
E. Coagulation times
Give this one a try later!
, A. Blood pressure
The correct answer is blood pressure. Cats with hyperthyroidism are likely
to develop hypertension. If this is severe enough (>180-200 mmHg systolic),
they can be at risk for acute retinal detachment or hemorrhage resulting in
blindness. Prompt resolution of the hypertension is critical to prevent
further damage to the eye and other organs.
A 7-year old male intact Chesapeake Bay Retriever presents to your clinic with the
presenting complaint of an intermittent cough. On exam, the dog is bright and alert
with a temperature of 100.5F (38.1 C), heart rate of 110 beats per minute and respiratory
rate of 30 breaths per minute. You perform chest radiographs (image: shows right
sided ventricular enlargement with very prominent pulmonary arteries). A CBC shows
a hematocrit of 39% (35-57%), neutrophil count of 8,659/ul (2,900-12,000/ul),
monocyte count of 984/ul (100-1,400/ul) and eosinophil count of 1,980/ul (0-1,300/ul).
What is the treatment of choice for the most likely diagnosis?
A. Furosemide
B. Terbutaline
C. Pericardiocentesis
D. Immiticide (Melarsomine)
E. Enrofloxacin
Give this one a try later!
D. Immiticide (Melarsomine)
The correct answer is Immiticide (melarsomine). The dog in this radiograph
has the classic findings for heartworm disease, including right sided
ventricular enlargement with very prominent pulmonary arteries.
Heartworm in the dog is caused by Dirofilaria immitis. The treatment of
choice for heartworm is Immiticide which is given by intramuscular
injection.
Furosemide is a treatment for congestive heart failure, which this dog
shows no evidence of. Terbutaline is a bronchodilator, which would be of
, little use in this case. Broad-spectrum antibiotics are useful for the
treatment of pneumonia and other infections but are not effective against
heartworm. Pericardiocentesis is obviously the treatment for pericardial
effusion, but this dog's radiographs do not show the classic globoid heart
you might see with pericardial effusion.
Adulticidal treatments for heartworm are melarsomine and thiacetarsamide.
Which canine parasite can cause cutaneous larva migrans in people?
A - Trichuris spp.
B - Ancylostoma spp.
C - Habronema spp.
D - Trichostrongylus spp.
E - Spirocerca sp.
Give this one a try later!
B - Ancylostoma spp.
Hookworms (Ancylostoma spp.) may cause cutaneous larva migrans in
people.
Note that roundworms (Toxocara spp., Toxasacaris spp., Baylisascaris spp.)
are also zoonotic causing visceral and ocular larva migrans in people.
In dogs, whipworms (Trichuris spp.) are associated with
hypoadrenocorticism-like syndrome (hyponatremia, hyperkalemia,
azotemia, metabolic acidosis). Whipworm infection has been suggested as
one cause of cecocolic intussusception.
Habronema spp. in horses can cause tumor-like stomach nodules and
sometimes cutaneous lesions.
Trichostrongylus spp. cause parasitic gastritis and enteritis in sheep, goats,
and cattle.
hyperthyroidism presents to you for acute onset of blindness. You perform an
ophthalmic exam and note retinal hemorrhage. What diagnostic test should you
perform first?
A. Blood pressure
B. Total T4 levels
C. Serum BUN and creatinine
D. Free T4 levels by equilibrium dialysis
E. Coagulation times
Give this one a try later!
, A. Blood pressure
The correct answer is blood pressure. Cats with hyperthyroidism are likely
to develop hypertension. If this is severe enough (>180-200 mmHg systolic),
they can be at risk for acute retinal detachment or hemorrhage resulting in
blindness. Prompt resolution of the hypertension is critical to prevent
further damage to the eye and other organs.
A 7-year old male intact Chesapeake Bay Retriever presents to your clinic with the
presenting complaint of an intermittent cough. On exam, the dog is bright and alert
with a temperature of 100.5F (38.1 C), heart rate of 110 beats per minute and respiratory
rate of 30 breaths per minute. You perform chest radiographs (image: shows right
sided ventricular enlargement with very prominent pulmonary arteries). A CBC shows
a hematocrit of 39% (35-57%), neutrophil count of 8,659/ul (2,900-12,000/ul),
monocyte count of 984/ul (100-1,400/ul) and eosinophil count of 1,980/ul (0-1,300/ul).
What is the treatment of choice for the most likely diagnosis?
A. Furosemide
B. Terbutaline
C. Pericardiocentesis
D. Immiticide (Melarsomine)
E. Enrofloxacin
Give this one a try later!
D. Immiticide (Melarsomine)
The correct answer is Immiticide (melarsomine). The dog in this radiograph
has the classic findings for heartworm disease, including right sided
ventricular enlargement with very prominent pulmonary arteries.
Heartworm in the dog is caused by Dirofilaria immitis. The treatment of
choice for heartworm is Immiticide which is given by intramuscular
injection.
Furosemide is a treatment for congestive heart failure, which this dog
shows no evidence of. Terbutaline is a bronchodilator, which would be of
, little use in this case. Broad-spectrum antibiotics are useful for the
treatment of pneumonia and other infections but are not effective against
heartworm. Pericardiocentesis is obviously the treatment for pericardial
effusion, but this dog's radiographs do not show the classic globoid heart
you might see with pericardial effusion.
Adulticidal treatments for heartworm are melarsomine and thiacetarsamide.
Which canine parasite can cause cutaneous larva migrans in people?
A - Trichuris spp.
B - Ancylostoma spp.
C - Habronema spp.
D - Trichostrongylus spp.
E - Spirocerca sp.
Give this one a try later!
B - Ancylostoma spp.
Hookworms (Ancylostoma spp.) may cause cutaneous larva migrans in
people.
Note that roundworms (Toxocara spp., Toxasacaris spp., Baylisascaris spp.)
are also zoonotic causing visceral and ocular larva migrans in people.
In dogs, whipworms (Trichuris spp.) are associated with
hypoadrenocorticism-like syndrome (hyponatremia, hyperkalemia,
azotemia, metabolic acidosis). Whipworm infection has been suggested as
one cause of cecocolic intussusception.
Habronema spp. in horses can cause tumor-like stomach nodules and
sometimes cutaneous lesions.
Trichostrongylus spp. cause parasitic gastritis and enteritis in sheep, goats,
and cattle.
