Dog Flashcards
(124 cards)
1
Q
biopsy of skin lesion shows a broad based budding organism. What organism do you think of?
A
Blastomycosis
2
Q
cardio question: concentric hypertrophy = ______ overload eccentric hypertrophy = _____ overload
A
concentric hypertrophy = pressure overload eccentric hypertrophy = volume overload
3
Q
T/F Lidocaine is used for ventricular arrhythmias
A
true
4
Q
Would simonsiella in the nasopharynx of a dog cause clinical signs? If so, what?
A
would not cause clinical signs, it is a normal thing to find
5
Q
What is the tx for nasal aspergillosis in a dog?
A
topical antifungal (clotrimazol)
6
Q
list 3 things that can cause keratoconjunctivitis sicca
A
-immune mediated -long term atropine administration -sulfonamide toxicity
7
Q
What is the tx for TVT (transmissible venereal tumor)?
A
vincristine
8
Q
magnesium ammonium phosphate crystals are _____ crystals. It likes ____ urine
A
struvite; alkaline
9
Q
What is Fanconi syndrome
A
Fanconi syndrome is a rare disorder of kidney tubule function that results in excess amounts of glucose, bicarbonate, phosphates (phosphorus salts), uric acid, potassium, and certain amino acids being excreted in the urine.usually occurs in Basenjis
10
Q
You diagnose a dog with a large ventricular septal defect with advanced sequelae to the abnormality. Which of the following is the most likely radiographic appearance of this dog’s thorax?
A
The correct answer is left atrial and left ventricular enlargement with pulmonary hyperperfusion. In dogs with a VSD, the shunt occurs during systole when both ventricles are contracting so blood is shunted from the left ventricle almost directly into the pulmonary artery. The right ventricle acts as a conduit between the left ventricle and pulmonary artery and is less commonly affected by the shunted blood. The excess blood flow is found in the pulmonary vasculature, left atrium, and left ventricle, thus enlarging these structures.
11
Q
When measuring Vitamin B12 (Cobalamin) and Folate levels in a dog with suspected small intestinal bacterial overgrowth, which finding is most supportive of this diagnosis? (high/low folate and high/low cobalamin options)
A
Increased folate, decreased cobalamin. bacteria synthesize folate leading to decreased absorption of cobalamin.
12
Q
Staphylococcus pseudintermedius vs Staphylococcus aureus. Which one is more dangerous to people?
A
Staphylococcus aureus is host adaptive to humans - quarantine might be needed if dog has it - BUT most of the time doggo got it from a human
13
Q
true/ false melanoma makes up 1/3 of doggo oral tumors
A
true. second most common tumor is squamous cell carcinoma followed by fibrosarcoma and acanthomatous epulis.
14
Q
______ tumor accounts for approximately 2/3 of malignant splenic masses and will have metastasized in >90% of cases by the time they are diagnosed.
A
hemangiosarcoma
15
Q
____ chamber enlargement occurs with left-to-right shunting PDAs and _____ chamber enlargement occurs with right-to-left shunting PDAs
A
left chamber enlargement occurs with left-to-right shunting PDAs and right chamber enlargement occurs with right-to-left shunting PDAs
16
Q
what is Fluoxetine?
A
SSRI Fluoxetine (aka Prozac) is used to treat depression and obsessive-compulsive disorders.
17
Q
4 components of nephrotic syndrome
A
proteinuria, hypoproteinemia, hypercholesterolemia, and ascites or edema.
18
Q
which is false about doxycycline in dogs? 1)can cause discoloration of teeth and thin enamel in puppies 2)can cause cartilage abnormalities in puppies 3)can cause esophageal strictures if it sits in the esophagus 4)can cause GI upset
A
2 is false. Fluoroquinolone antibiotics can cause this, not doxy.
19
Q
what breed is predisposed to acanthosis nigricans?
A
dachshund
20
Q
what is the drug of choice for head trauma patients with increased ICP?
A
mannitol. it is a hyperosmotic hiuretic
21
Q
what is Brodifacoum and bromethalin?
A
brodifacoum: highly lethal 4-hydroxycoumarin vitamin K antagonist anticoagulant poison bromethalin: neurotoxic rodenticide
22
Q
discoid lupus erythematosis clinical signs
A
depigmentation, erythema, scaling, and loss of the “cobblestone” appearance of the nasal planum. Alopecia, crusting, scaling, and ulcerations can also be seen on the face, muzzle, lips, pinnae, and periorbitally.
23
Q
What zoonotic parasite is known to affect the eyes of children? 1)Hookworm 2)Whipworm 3) Tapeworm 4) Roundworm
A
roundworm. Toxocara canis, is the most common cause of visceral larval migrans in humans.
24
Q
true / false Sarcoptes scabiei effects the hair follicle
A
false. Sarcoptes scabiei, which is a non-seasonal, intensely pruritic, transmissible mite, affects the stratum corneum.
25
BUN goes up or down with Cushing's?
DOWN due to increased diuresis
26
Lens removal is indicated in cases of (anterior or posterior) lens luxation because they usually cause discomfort and usually cause uveitis and glaucoma.
Lens removal is indicated in cases of anterior lens luxation because they usually cause discomfort and usually cause uveitis and glaucoma.
27
What is the most appropriate medical treatment for transitional cell carcinoma at the trigone of the bladder
Piroxicam and carboplatin chemotherapy
28
Pemphigus vulgaris what is it what is the tx
autoimmune disorder causing vesicles, ulceration, and crusting. It can affect the whole body, but it especially affects the mucocutaneous junctions and oral mucosa. The onset of the disease can be acute or gradual. treatment is immunosuppressive therapy with corticosteroids and frequently additional immunomodulatory or immunosuppressive drugs such as azathioprine, cyclophosphamide, chlorambucil, or others. Unfortunately, long-term therapy is generally required and these treatments cause serious side-effects long-term. Prognosis is poor
29
The necropsy finding of a waxy kidney is highly suggestive of \_\_\_\_\_. Lyme disease can lead to glomerulonephritis where the surface of the kidney is covered by \_\_\_\_\_\_
The necropsy finding of a waxy kidney is highly suggestive of amyloidosis. Lyme disease can lead to glomerulonephritis where the surface of the kidney is covered by hemorrhagic spots.
30
how does lactulose works in the treatment of hepatic encephalopathy?
This lowers colonic pH, which keeps ammonia in its ionized form, NH4+, rather than as NH3. The ionized form is not absorbed . It is a cathartic and causes decreased intestinal transit time, leading to decreased absorption of ammonia. It also prevents ammonia formation.Finally, it is a carbohydrate source which can be used by colonic flora as an alternative to protein, preventing ammonia formation.
31
Type I hypersensitivity (immediate)
re-exposure of an antigen results in an allergic reaction. The antigen is presented and causes B cell production of IgE antibodies.
32
Type II hypersensitivity (cytotoxic)
when an antigen on a cell surface binds with an antibody and is then recognized by the body as being foreign. dendritic cells then recognize the cell and "present the antigen" which then causes B cell proliferation and production of IgG and IgM antibodies.
33
Type III hypersensitivity (immune complex)
more antigens than there are antibodies. The antigens float around in the circulation and multiple antigens may bind one antibody, thus forming an immune complex. Large complexes can be cleared by macrophages, but smaller ones may evade the macrophages.
34
Type IV (delayed type hypersensitivity)
takes several days to occur and rather than being antibody-mediated, it is actually cell-mediated. Cytotoxic CD8+ T cells and CD4+ helper T cells recognize antigen that is in a complex with major histocompatibility complex 1 or 2.
35
What do we give dogs that drank ethylene glycol?
4-MP and ethanol act by preventing alcohol dehydrogenase from converting ethylene glycol to its toxic metabolites. In animals where oliguric renal failure has already begun, most of the ethylene glycol will already have been metabolized, so there is no benefit to giving ethanol or 4-MP.
36
Toy breed dogs, particularly Yorkshire Terriers, are predisposed to congenital, single/multiple, extra/intra-hepatic portosystemic shunts. Larger breed dogs with congenital liver shunts tend to develop intra/extrahepatic shunts. Acquired shunts in older animals are almost always intra/extrahepatic.
Toy breed dogs, particularly Yorkshire Terriers, are predisposed to congenital, single, extra-hepatic portosystemic shunts. Larger breed dogs with congenital liver shunts tend to develop intrahepatic shunts. Acquired shunts in older animals are almost always extrahepatic.
37
thymomas have 2 paraneoplastic syndromes, what are they ? what is tx for the tymoma?
myasthenia gravis and megaesophagus as paraneoplastic syndromes.As long as thymomas are well encapsulated, the prognosis is relatively good, and surgery via a median sternotomy should be recommended.
38
How much protein should you feed a dog with hepatic insufficiency or hepatic encephalopathy?
The maximum amount of protein they will tolerate without causing signs of encephalopathy
39
bad epithelial cells are \_\_\_, while bad mesenchymal cells are \_\_\_\_\_
Carcinoma, sarcomas
40
What is the most common side effect of Ivermectin?
Neurological toxicity. It is reversible after stopping medication.
41
What is the most common cause of exocrine pancreatic insufficiency in the dog?
Pancreatic acinar atrophy. Chronic pancreatitis is a much more common cause of EPI in cats than dogs.
42
What breed of dog is predisposed to forming urate uroliths due to a metabolic defect?
Dalmatians have a metabolic defect where they are unable to convert uric acid to allantoin, a much more soluble compound. As a result, urate levels in the urine reach high levels and frequently form stones. Yorkshire Terriers, in a way, are predisposed to making urate stones, but not from a metabolic defect. Instead, Yorkies frequently have portosystemic shunts. This anatomic abnormality is a common reason that animals other than Dalmatians form urate stones.
43
persistent right aortic arch. This vascular ring anomaly is an inherited defect that causes a constricting obstruction of the esophagus at the level of the heart base. There is a breed predilection for ____ and \_\_\_\_\_
German Shepherd Dogs and Irish Setters.
44
Pulmonary contusions can cause respiratory deterioration in the apparently stable patient for up to \_\_\_hours after trauma. They usually then improve over the next \_\_\_to\_\_\_ hours.
Pulmonary contusions can cause respiratory deterioration in the apparently stable patient for up to 24 hours after trauma. They usually then improve over the next 24-48 hours.
45
(possible horner's) with a post-ganglionic lesion, denervation hypersensitivity to NE occurs. As a result, adding phenylephrine topically can cause a rapid response. With pre-ganglionic lesions, the response usually takes greater than ___ minutes.
with a post-ganglionic lesion, denervation hypersensitivity to NE occurs. As a result, adding phenylephrine topically can cause a rapid response. With pre-ganglionic lesions, the response usually takes greater than 20 minutes.
46
Intracytoplasmic cocci from a dog's skin are most likely \_\_\_\_\_\_\_, which is the species host-adapted to canines.
Intracytoplasmic cocci from a dog's skin are most likely Staphylococcus pseudintermedius, which is the species host-adapted to canines.
47
treatment of choice for a Taenia infection in dogs?
Praziquantel . Pyrantel and ivermectin are not known to be effective against Taenia infections. Fenbendazole is effective against Taenia pisiformis, but not other subspecies of Taenia, making it a less desirable answer choice.
48
\_\_\_\_\_(abx) would be a good choice as a cause of central vestibular disease. _______ is a topical drug implicated in ototoxicity and peripheral vestibular disease.
metronidazole would be a good choice as a cause of central vestibular disease. Chlorhexadine is a topical drug implicated in ototoxicity and peripheral vestibular disease.
49
bitch had puppies a week ago and is presented for emergency seizures. What do you do?
give her IV Ca gluconate to correct huypoCa; you can give IV diazepam to stop the seizures but that won't help correct the underlying problem
50
cervical spondylopathy -2 dog breeds and 1 horse breed that are predisposed -what are the main clinical signs
-doberman, great dane and throughbred horses -ataxia, paresis on all limbs with UMN signs on all limbs
51
Bartonella is responsible for cat scratch fever. Cats have no clinical signs but can harm humans with scratches contaminated with flea feces. How do dogs get infected and what are some dog clinical signs
-dogs can be exposed via tick or fleas -clinical signs include fever, malaise, weight loss and lymphadenopathy. Possible endocarditis
52
which area of the heart is most commonly affected in a dog with infective endocarditis ?
mitrial and aortic valves
53
what measure of free T4 is more effective 1) equilibrium dialysis 2)radioimmunoassay
equilibrium dialysis is more reliable
54
how do you dx bile peritonitis ?
comparison between bilirubin concentration in the fluid and in the serum. Concentration of bili that is twice as high as serum is diagnostic
55
the endpoint of warfarin therapy in an animal with a pulmonary thromboembolism is a _______ time of 1.5 - 2 times normal
prothrombin time (PT) PTT and ACT will be unchanged
56
3 most common dermatophytes affecting dogs and cats. Where are they found? 1) Microsporum gypseum 2)Trichophyton mentagrophytes 3) Microsporum canis
1)Microsporum gypseum is geophilic. This species often affects dogs that like to dig. 2)Trichophyton mentagrophytes is zoophilic and usually rodents serve as the host; dogs such as hunting dogs or roaming cats are most commonly affected. 3) Microsporum canis is most commonly contracted from cats.
57
what makes up the superficial vs the deep inguinal ring ?
seperficial: external abdominal oblique deep: inguinal ligament, rectus abdominis and internal abdominal oblique
58
what is the drug of choice to induce emesis in the dog and what is the reversal for the drug ?
apomorphine naloxone
59
T/F morphine causes release of histamine
true
60
what breeds are predisposed to familial dermatomycosis ?
collies and shetland sheepdogs -causes atrophy of muscles and erosion, crusting, and alopecia of skin (exacerbated by heat and sun exposure)
61
CVP (central venous pressure) is a pretty good way to measure circulating volume. What is the normal range and what is considerate hypovolemic ?
normal is 0-10cmH2O hypovolemic is -5-5 cmH2O
62
what is the holding layer of the esophagus ?
the submucosa
63
what two species of microfilarie can be seen in peripheal blood smears ?
dirofilaria immitis and acanthocheilonema (Dipetalonema) reconditum acanthocheilonema is not pathogenic so no need for tx
64
T/F Parvovirus causes laukopenia
true
65
chemo drugs and their main side effects 1) adriamycin 2) vincristine 3)L-asparaginase 4)cisplatin 5)cyclophosphamide
1) cardiotoxicity 2)ileus 3)anaphylaxis 4)nephrotoxicity 5)cystitis
66
Ticks and what they most likely transmit: 1)Dermacentor variabilis and Dermacentor andersoni 2)Amblyomma americanum 3)Rhipicephalus sanguineus 4)Ixodes pacificus
1)Dermacentor variabilis and Dermacentor andersoni are known to transmit Rocky Mountain Spotted Fever. 2)Amblyomma americanum may transmit canine granulocytic ehrlichiosis which is caused by E. ewingii and Anaplasma phagocytophila. 3)Rhipicephalus sanguineus is known to transmit Ehrlichia canis 4)Ixodes pacificus is most likely to be the vector for Lyme disease
67
68
The maximum safe rate of potassium infusion is ____ mEq/kg/hr.
The maximum safe rate of potassium infusion is 0.5 mEq/kg/hr.
69
What are the sings of chocolate toxicity ?
The toxic principle of chocolate is methylxanthines (specifically theobromine and caffeine). Methylxanthines can cause CNS excitation tachycardia, and vasoconstriction. Signs include vomiting, diarrhea, hyperactivity, polyuria, polydipsia, lethargy, tachycardia, cardiac arrhythmias, seizures, and death.
70
1) \_\_\_\_\_\_\_\_ is the chelator used to treat lead poisoning
2) \_\_\_\_\_\_\_\_ is used for acetaminophen toxicity and hepatotoxicity.
3) \_\_\_\_\_\_\_\_is used more commonly for copper toxicity.
1) Ca-EDTA is the chelator used to treat lead poisoning
2) N-acetylcysteine is used for acetaminophen toxicity and hepatotoxicity.
3) D-penacillamine is used more commonly for copper toxicity.
71
A 9-year old Cocker Spaniel presents to you for multiple small (3-6 mm) skin masses. The owner describes them as cauliflower-like. Some appear to be ulcerated. What is the most likely diagnosis?
Sebaceous gland tumor
72
What is the most common etiologic agent causing pyoderma in the dog?
Staphylococcus pseudintermedius
73
Sepsis is suspected if the glucose in the ascites is at least \_\_\_mg/dL less than the peripheral blood. A blood lactate level of \_\_\_\_\_mmol/L lower than the ascites lactate level is also highly suggestive of a septic abdomen.
Sepsis is suspected if the glucose in the ascites is at least 20mg/dL less than the peripheral blood. A blood lactate level of 2.0mmol/L lower than the ascites lactate level is also highly suggestive of a septic abdomen.
74
EPI is believed to be an autosomal recessive trait in \_\_\_\_\_\_\_\_\_(breed) that results in atrophy of the exocrine pancreas. Dogs lose the ability to digest fat and protein and become emaciated. They have voluminous, soft feces, a voracious appetite, and may develop pica. The trypsin-like immunoreactivity (TLI) is diagnostic for EPI. Treatment entails adding powdered pancreatic enzyme extract, or raw pancreas to meals. These dogs should not be bred.
EPI is believed to be an autosomal recessive trait in German Shepherd Dogs that results in atrophy of the exocrine pancreas. Dogs lose the ability to digest fat and protein and become emaciated. They have voluminous, soft feces, a voracious appetite, and may develop pica. The trypsin-like immunoreactivity (TLI) is diagnostic for EPI. Treatment entails adding powdered pancreatic enzyme extract, or raw pancreas to meals. These dogs should not be bred.
75
T/F
when the total calcium on a chemistry panel is low due to hypoproteinemia, you should not see clinical signs of hypocalcemia as long as the ionized calcium is normal.
true
76
Administration of _______ results in release of von Willebrand factor, which will help this patient with clotting.
Administration of desmopressin results in release of von Willebrand factor, which will help this patient with clotting.
77
-Clin path findings with each dz:
- Renal carcinomas
- anal sac adenocarcinomas
- hemangiosarcoma and multiple myeloma.
- Sertoli cell tumors.
Renal carcinomas have been associated with erythropoietin secretion, causing elevations in hematocrit as a paraneoplastic syndrome.
Hypercalcemia is associated with anal sac adenocarcinomas, lymphomas and other tumors.
Thrombocytopathy can be seen with hemangiosarcoma and multiple myeloma.
Hyperestrogenism can be seen with Sertoli cell tumors.
78
A myelogram is a positive-contrast radiographic study where a contrast agent such as iohexol or iopamidol is injected into the _______ space where CSF accumulates.
A myelogram is a positive-contrast radiographic study where a contrast agent such as iohexol or iopamidol is injected into the subarachnoid space where CSF accumulates.
79
What is the most common cause of cardiac arrest in dogs?
The correct answer is systemic hypoxemia. Systemic hypoxemia is usually due to neurologic, pulmonary, or myocardial hypoxia.
80
What is the most common type of intussusception in small animals?
The correct answer is ileocolic intussusception. The second most common is jejuno-jenunal intussusception.
81
Which of these is not a common sign of small bowel obstruction in a dog?
Vomiting
Diarrhea Your Answer
Abdominal pain
Tenesmus
The correct answer is tenesmus. Tenesmus is a sign of large bowel disease rather than small bowel. Vomiting is a consistent sign of small bowel obstruction. Diarrhea is also common and is due to bacterial overgrowth due to the obstruction and sometimes due to vascular obstruction. Abdominal pain is also a common sign.
82
Salmonella typhimurium is a \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
Gram positive obligate aerobe
Gram negative facultative anaerobe
Gram negative obligate aerobe
Gram negative obligate anaerobe
gram negative facultative anaerobe. In horses, it primarily infects the cecum and proximal colon.
83
Closure of the eyes is mediated by cranial nerve ____ and opening the eyes is mediated by CN \_\_\_\_
Closure of the eyes is performed by the orbicularis oculi muscle innervated by the facial nerve. Opening of the eye is by the levator palpebrae superioris innervated by the oculomotor nerve.The trigeminal nerve supplies sensory innervation to the eye.
84
suture pattern questions
1-Does the horizontal mattress invert or evert tissue?
2-When would we use a Bunnel Pattern?
3-Does the lembert pattern invert or evert tissue?
1- evert
2-severed tendons
3-invert
85
In canine patients with primary hyperparathyroidism, a chemistry panel would show:
The correct answer is hypercalcemia, hypophosphatemia. Patients with primary hyperparathyroidism would have hypercalcemia and normo to hypophosphatemia due to the law of mass action in which phosphorus decreases as calcium increases and vice versa.
86
Standard dosing of chemotherapy in animals is most likely to affect which cell lines the most?
Erythrocytes
Monocytes
Lymphocytes
Plasma cells
Neutrophils
Neutrophils have short life spans of 5-9 hours and are therefore replicating quickly. Chemotherapy generally targets cells that replicate quickly and therefore neutropenia is a common sequela.
87
The causative agent of canine parvovirus is \_\_\_\_\_\_.
Togavirus
Canine adenovirus-2
Coronavirus
Canine parvovirus-1
Canine parvovirus-2
Canine parvovirus-2
88
To raise the PCV 1% you need to give \_\_\_ml/kg of fresh whole blood
To raise the PCV 1% you need to give 2ml/kg of fresh whole blood
89
Which of the following are Bernese Mountain Dogs NOT predisposed to developing?
Hip dysplasia
Elbow dysplasia
Pulmonic stenosis
Malignant histiocytosis
The correct answer is pulmonic stenosis. Pulmonic stenosis is a congenital abnormality more common in small breed dogs. Bernese Mountain Dogs are commonly affected with hip dysplasia, elbow dysplasia, malignant histiocytosis, osteosarcoma, as well as other neoplasms.
90
Which of the following is a complication of long-term sling application on a limb?
Neurogenic muscular atrophy
Osteoarthritis
Contracture of muscles
Pathologic fractures
The correct answer is contracture of muscles. Other complications of long-term sling application include joint fibrosis and disuse muscle atrophy.
91
Which of the following poses the most significant threat to man?
Ancylostoma braziliense
Dirofilaria immitis
Baylisascaris procyonis
Acanthocheilonema reconditum
The correct answer is Baylisascaris procyonis. This is an ascarid (roundworm) found in the small intestine of the raccoon. The result in humans is larval migrans to the brain causing CNS disease. It may migrate to the eye and usually affects children.
92
Which of these would you expect to be prolonged soonest after ingestion of an anticoagulant rodenticide by a dog?
Thrombin time (TT)
Activated Clotting Time (ACT)
Prothrombin time (PT)
Partial thromboplastin time (PTT)
The correct answer is PT. These compounds act by inhibiting vitamin K, which is required for synthesis of clotting factors II, VII, IX, and X. Factor VII has the shortest half-life of these and will be depleted first. Since PT measures the extrinsic system which contains factor VII, it becomes prolonged first.
93
Which of the following is an effect of the barbiturate thiopental in dogs?
Increased respiratory rate
Increase in CNS activity
Increase in the rate of cardiac arrhythmias
Increase in arterial blood pressure
Barbiturates are often used to induce anesthesia and to control seizures when all other anti-epileptic drugs are not effective. They can cause cardiac arrhythmias (ventricular bigeminy is the most common), tachycardia, dose dependent hypotension, apnea, and a decrease in CNS activity.
94
Can you use pradofloxacin in dogs?
Pradofloxacin is not for use in dogs due to bone marrow suppression.Pradofloxacin (Veraflox) is an orally administered, liquid fluoroquinolone antibiotic that was FDA approved in 2012 for use in cats to treat skin infections (wounds and abscesses) caused by Pasteurella multocida, Streptococcus canis, Staphylococcus aureus, Staphylococcus felis, and Staphylococcus pseudointermedius. The drug is not for use in dogs and it has been shown to cause bone marrow suppression resulting in severe thrombocytopenia and neutropenia.
Enrofloxacin has been associated with retinal degeneration in cats, particularly at high doses and is used with caution for this reason.
95
What is the most common site of the bone for metastatic bone tumors to occur in dogs?
Diaphysis
Cortex
Metaphysis
Epiphysis
The correct answer is diaphysis. Metastatic bone tumors usually occur in the diaphysis, most likely because this is where the blood supply comes in. This is in contrast to primary bone tumors which usually occur at the metaphysis, likely because this is where most cell division occurs.
96
At which age is a dog most likely to develop canine cutaneous histiocytoma?
5-8 years of age
3-5 years of age
Less than 3 years of age
Greater than 8 years of age
The correct answer is less than 3 years of age. The head is the most common site for these tumors. They are solitary, raised, dome-shaped nodules that often ulcerate and regress. Treatment is rarely needed, but if the lesion persists, surgical excision is recommended.
97
Which of the following dog breeds has a strong predisposition to atopic dermatitis?
German Shepherd Dog
West Highland White Terrier
Rottweiler
Doberman Pinscher
West Highland White Terrier
98
Mandibular ______ (mandible longer than maxilla) and maxillary _______ (maxilla shorter than mandible) is a common anatomic feature of brachycephalic dogs.
Mandibular prognathism (mandible longer than maxilla) and maxillary brachygnathism (maxilla shorter than mandible) is a common anatomic feature of brachycephalic dogs.
99
Amphotericin B is an antifungal agent that acts on _________ and is mainly toxic to the animal's \_\_\_\_\_\_\_\_.
Fungal cell membrane, kidneys
100
Which of the following is least useful in helping to diagnose atopic dermatitis in a dog?
Skin biopsy
Intradermal Skin Testing (IDST)
Clinical signs, anatomic distribution of clinical signs, and seasonality
Serum ELISA
The correct answer is skin biopsy. A biopsy will reveal the pathology that the skin is undergoing, but will not give a specific diagnosis as to what is causing the reaction. IDST is performed by injecting a small amount of various individual antigens into the dermis of an animal and observing which antigen injections cause a reaction. The most common clinical sign of atopy is pruritus, which often occurs on the face, feet, and ears. Flare-ups also often occur during times of high concentrations of pollen in the environment. Serum ELISA measures the concentration of antigen specific IgE found in the animal.
101
In general, deep skin infections can require ____ weeks of antibiotic treatment and even 12 weeks for severe cases. Superficial infections require ____ weeks of antibiotic therapy or one week past clinical resolution.
In general, deep skin infections can require 6-8 weeks of antibiotic treatment and even 12 weeks for severe cases. Superficial infections require 3-4 weeks of antibiotic therapy or one week past clinical resolution.
102
Which of the following is not a differential diagnosis for polyuria and polydipsia in a Golden Retriever?
Hypothyroidism
Hypercalcemia
Pyelonephritis
Hypoadrenocorticism
The correct answer is hypothyroidism. Hypothyroidism patients do not have polyuria and polydipsia. Hypercalcemia, pyelonephritis, and hypoadrenocorticism patients can all be polyuric and polydipsic, although it is usually rare in hypoadrenocorticism.
103
Which of the following breeds is predisposed to familial hyperlipidemia?
Boxer
Cocker Spaniel
German Shepherd
Golden Retriever
Miniature Schnauzer
The correct answer is Miniature Schnauzer. Clinically affected dogs may be predisposed to seizures, pancreatitis, acute blindness, vomiting, and corneal opacities. Management is via low-fat diets.
104
Which of these is not primarily produced by the liver?
Antithrombin III
Albumin
Urea
Fibrinogen
Trypsin
The answer is trypsin. Trypsin is primarily produced by the pancreas. The other proteins listed are produced predominantly by the liver.
105
Which statement about hypertrophic osteopathy (HO), as depicted in the radiograph below, is true?
## Footnote
HO occurs in young, large breed dogs
HO is characterized by sclerosis of the subchondral bone of long bones
HO usually starts in the proximal appendages and spreads distally
HO occurs in association with a thoracic mass
The correct answer is HO occurs in association with a thoracic mass. There is no breed or age predisposition for HO. The disease usually starts at the distal extremities and develops proximally. HO is characterized by periosteal proliferation near joints, not sclerosis of the subchondral bone.
106
A dog presents to your clinic for coughing and fever a week after going hunting. You work the dog up, perform bronchoscopy and remove a plant awn from the lungs. What bacterial infection is this dog predisposed to?
Actinomyces
Pasteurella multocida
Staphylococcus aureus
Nocardia
Staphylococcus pseudointermedius
The correct answer is Actinomyces. This is a filamentous, branching, gram positive bacteria that is a normal inhabitant of the mouth and oropharynx. It is commonly associated with grass awn migration. These are usually contaminated in the oropharynx and then migrate through the body from the respiratory or GI tracts. Many times it takes months to years to make a diagnosis. Nocardia is a ubiquitous soil saprophyte found everywhere and is usually introduced via the respiratory tract.
107
Which of these tumor types is frequently testosterone-dependent and is therefore found most frequently in dogs that are intact males or have testosterone-secreting tumors?
Perianal adenoma
Apocrine gland anal sac adenocarcinoma
Squamous cell carcinoma
Mast cell tumors
The correct answer is perianal adenoma. These tumors are primarily seen in older male intact dogs. These tumors will often shrink or resolve after castration.
108
What is the method of choice for diagnosing rabies?
The correct answer is direct fluorescent antibody test. There are no gross pathologic lesions associated with rabies. A diagnostic microscopic lesion is the visualization of Negri bodies. Most commonly they occur in the hippocampus in carnivores and Purkinje cells in herbivores. However, these are only seen 50% of the time. Immunohistochemistry allows strain differentiation and the ability to differentiate vaccine vs. wild-type. RT-PCR has been used on autolyzed brain tissue that is difficult to evaluate with fluorescent antibodies, but this is not the test of choice at this time. Direct FA is the current preferred method of diagnosis; it is both rapid and sensitive. Usually impressions of the medulla, cerebellum, and hippocampus are performed.
109
What type of urinary stone is likely to form in an animal being treated with too much allopurinol?
Xanthine
Calcium oxalate
Urate
Struvite
Cysteine
The correct answer is xanthine stones. Allopurinol is used in the treatment of urate stone forming Dalmatians. It acts by inhibiting the enzyme, xanthine oxidase, which metabolizes xanthine. The idea is that by stopping the purine metabolism pathway at this point, uric acid will not be formed in high quantities. However, if given at too high of a dose, xanthine will accumulate to levels where xanthine stones will form.
110
what if the first sign of lidocaine toxicity ?
CNS depression
111
Which of these is an appropriate treatment for a dog that has ingested diluted bleach within the past 10 minutes?
Administer intravenous fluids
Administer non-steroidal anti-inflammatory drugs
Administer activated charcoal
Administer milk to dilute the stomach contents
Administer apomorphine
The correct answer is to dilute the stomach contents with milk. Bleach, even when diluted can be corrosive as can many household cleaners. This can result in severe burning of the mouth, esophagus, and stomach. Lesions from acids usually appear soon after exposure, while lesions from alkalis may not appear until 8-12 hours later. Do not induce vomiting with apomorphine because further damage can occur to the esophagus. Activated charcoal does not bind to these products and shouldn't be used. IV fluids is unlikely to be of any benefit immediately following the ingestion of the bleach unless the animal happens to already be sick or dehydrated. NSAIDs may help with pain or discomfort but can also contribute to the formation of ulcers within the GI tract. The recommended course of action is to dilute with milk or water and start GI protectants for several days. If the patient becomes depressed or anorectic, evaluate it for ulcers.
112
immune-mediated polyarthritis (IMPA). Which of the following are all known potential inciting causes or predisposing factors for this condition? (3)
- Systemic lupus erythematosus, sulfonamide exposure, mammary adenocarcinoma
- The clinical signs associated with IMPA are anorexia, weight loss, fever, lethargy, and lymphadenopathy. Up to 25% of dogs present with only nonspecific signs of systemic illness and without apparent gait abnormality or joint effusion. It is an important consideration for dogs with fever of unknown origin and may be the cause up to 20% of the time. IMPA is diagnosed by synovial fluid analysis although additional baseline diagnostics are indicated to screen for potential systemic or infectious causes. Normal synovial fluid is clear and viscous with \<2.5 g/dl protein and \<3,000 cells/ul with predominantly mononuclear cells. Joint fluid in IMPA may be thin, turbid, and increased in volume with higher amounts of protein and cells, often primarily nondegenerate neutrophils.
- Treatment of idiopathic IMPA centers on immunosuppressive therapy, often starting with prednisone and sometimes including an additional immunosuppressive drug such as azathioprine or cyclophosphamide. About 80% of dogs will respond to immunosuppressive doses of prednisone; however, half of dogs require long-term or additional drug therapy to maintain remission.
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Which anesthetic agent is implicated in malignant hyperthermia?
Nitric oxide
Acepromazine
Halothane
Ketamine
The correct answer is halothane. This is mainly an entity in swine but may be seen in other animals. It is a rare induction of a hyper-metabolic reaction in skeletal muscle of susceptible individuals by halothane. The syndrome is characterized by muscle rigidity, increased body temperature, increased oxygen consumption and production of CO2.
114
Which of these breeds of dogs has a congenital ocular anomaly characterized by choroidal hypoplasia
Collie Eye Anomaly is seen in up to 80% of the breed.
115
In which breeds should avermectins be avoided and why?
Old English Sheepdogs, possible p-glycoprotein pump mutation
Bull dogs
Pugs, predisposition to encephalopathy
Yorkshire Terriers, predisposition to portosystemic shunting
Old English Sheepdogs, Collies, Australian shepherds and related breeds are more likely to have a mutation in the MDR gene that codes for the p-glycoprotein pump. There are also reports of West Highland White Terriers and Samoyeds having a mutation in the MDR gene as well. Mutations in this pump at the blood-brain barrier allow avermectins to accumulate, leading to toxicity. The origin of the rhyme "white feet, don't treat" is unclear; some think it may reflect the possibility that mixed breed dogs with white feet may be descendants of collies or shepherds.
116
Where in the GI tract is folate absorbed?
Stomach
Colon
Ileum
Jejunum
Duodenum
The correct answer is jejunum. Folate is predominantly absorbed in the jejunum, in contrast to most other vitamins, which are absorbed predominantly in the duodenum (except for Vitamin B12 aka cobalamin, which is absorbed in the ileum).
117
What is the causative agent of Lyme disease?
Borrelia burgdorferi
Ehrlichia canis
Rickettsia rickettsii
Bartonella henselae
Borrelia burgdorferi
118
You examine a Basset Hound with primary glaucoma in one eye. What would you tell the owner about his prognosis for the other eye?
* It will probably also develop glaucoma in 6-12 months
* It will probably develop glaucoma within the next 1-3 months
* This is very strange because glaucoma almost always occurs bilaterally
* It has no increased chance of developing glaucoma
The correct answer is that it will probably also develop glaucoma in 6-12 months. The usual course for primary glaucoma is development in one eye with the contralateral eye following in 6-12 months. These animals have an iridocorneal angle that becomes increasingly compromised during the first few years of life and eventually causes an acute pressure spike in the eye.
119
A 1.5-year old male castrated Boxer presents for exercise intolerance and syncopal episodes. Cardiac auscultation reveals a grade 4/6 left systolic murmur heard best at the base of the heart. Thoracic radiographs show a mildly enlarged left ventricle and left atrium, and segmental enlargement of the ascending aorta. What test will best help you to confirm your tentative diagnosis?
Coombs' test
Echocardiogram
Heartworm antigen test
CT scan
24 hour Holter ECG monitor
The breed, clinical history of syncope, radiographic findings, and auscultation findings are most consistent with aortic stenosis. Echocardiography would be the best method for diagnosing the disease in which you would find left ventricular concentric hypertrophy, stenosis of the aortic outflow tract, and post-stenotic dilatation of the ascending aorta.
A Holter monitor is the test of choice for arrhythmogenic right ventricular cardiomyopathy (ARVC) which is also seen in Boxers and causes syncope but does not fit with the physical exam or radiographic findings. Also called Boxer cardiomyopathy, ARVC is a disease associated with fibrofatty infiltrate into the right ventricle resulting in electrical conduction disturbances and resultant VPCs.
A CT scan would not add more information, and cardiac motion typically causes resolution problems on thoracic CT scans. The signs are not consistent with heartworm, which is primarily a right heart problem, or with hemolytic anemia, which a Coombs' test might be useful for.
120
In an animal with pleural effusion, which radiographic view will give you the best view of the heart?
Right lateral
Left lateral
Ventrodorsal
Dorsoventral
The correct answer is ventrodorsal. Pleural effusion obscures the heart completely on a dorsoventral radiograph and at least partially on lateral radiographs. Ventrodorsal positioning usually moves the pleural fluid away from the heart and allows for a radiographic view of the heart to be obtained. Of course, in dyspneic animals, it may not be wise to position them ventrodorsally.
121
The round ligament of the bladder is the remnant of the \_\_\_\_\_\_\_\_.
Umbilical arteries
Umbilical vein
Broad ligament
Urachus
The correct answer is umbilical arteries. The urachus becomes the middle ligament of the bladder and the umbilical vein becomes the falciform ligament.
122
Which of these drugs should not be used in Greyhounds?
Propofol
Thiopental
Ivermectin
Morphine
The correct answer is thiopental. Thiopental is an ultra-short acting barbiturate. Recovery depends on redistribution to tissues, including fat. Because sighthounds have very little fat, they have prolonged recoveries and greater complications with these drugs.
123
Nyctalopia (night blindness) is a clinical sign of which vitamin or mineral deficiency?
Biotin
Zinc
Vitamin A
Niacin
The correct answer is Vitamin A. Vitamin A comprises retinal, which is a component of rhodopsin which facilitates the transfer of energy from photons into an electrochemical signal.
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