NAVLE Practice Questions with 100% Correct Answers

NAVLE Practice Questions with 100% Correct Answers Which one of the following choices is a key advantage of the ACTH (adrenocorticotropic hormone) stimulation test for Cushingoid dogs? a. Confirms adrenal HAC diagnosis b. Confirms hyperadrenocorticism (HAC) diagnosis c. Differentiates pituitary/adrenal HAC d. Identifies iatrogenic HAC e. More sensitive than low-dose dexamethasone suppression test d. Identifies iatrogenic HAC A group of 7 horses is pastured with a herd of steers. Usually the cattle are fed separately, but yesterday the horses were not separated from the cattle at feeding time. This morning three of the horses are dead, and two are sweating and ataxic. No gross lesions are noted on necropsy of the dead horses. All of the cattle are behaving normally. Which one of the following choices is the most likely cause of the illness and deaths in this group of horses? a. Aflatoxin toxicity b. lonophore toxicity c. Lead toxicity d. Pyrrolizidine alkaloid toxicity e. SaIt toxicity b. lonophore toxicity Which one of the following conditions is most likely to be true of sows aborting due to porcine reproductive and respiratory syndrome (PRRS)? a. Sows become infertile and will not conceive again. b. Sows develop chronic respiratory signs and become "poor doers.41 c. Sows are immune; they will not abort if exposed to the same strain later. d. Sows have no immunity and may abort future pregnancies. e. Sows will seroconvert but may still abort in future pregnancies. c. Sows are immune; they will not abort if exposed to the same strain later. Abdominal ultrasound on a dog with hyperadrenocorticism (HAC) shows bilaterally enlarged adrenal glands. Which one of the following choices is the most likely cause? a. Adrenal adenoma b. Pituitary adenoma c. Secondary pheochromocytoma d. Adrenal carcinoma e. Aldosteronoma b. Pituitary adenoma Which one of the following choices is most likely to help prevent clinical symptoms secondary to hairballs in rabbits? a. Complete, pelleted diet b. Free-choice access to hay c. Prophylactic doses of enrofloxacin d. Routine addition of proteolytic enzymes to diet e. Routine dosing with mineral oil b. Free-choice access to hay A 15-year-old, female cat is presented for anorexia. The cat has been vomiting for several days. On examination, the cat is depressed and emaciated with pale mucous membranes. The cat is moderately azotemic on serological analysis. Which one of the following choices is the most likely concomitant finding on serum biochemical analysis of this cat? a. Hypernatremia b. Hyperphosphatemia c. Hypobilirubinemia d. Hypocalcemia e. Hypoglycemia b. Hyperphosphatemia Several 1- to 3-day-old Holstein calves are evaluated for sudden onset of profuse diarrhea. Two calves have died. Clinical examination shows dehydrated, recumbent, severely depressed animals with whitish-yellow, watery diarrhea. Which one of the following choices is the most likely cause? a. Coccidiosis b. Salmonella typhimurium c. Cryptosporidiosis d. Escherichia coli e. Rotavirus d. Escherichia coli A 3-year-old dachshund is presented with acute onset of severe thoracolumbar pain, arched back, hind-limb hypermetria, ataxia, and weakness. The cutaneous trunci reflex is absent until pinching the skin with forceps reaches a line adjacent to the level of the third lumbar vertebra (L3). Which one of the following choices is the most likely location of the lesion in this is dog? a. L1- L2 b. L3- L4 c. L4- L5 d. T11-T12 e. T12 -T13 a. L1- L2 A small herd of horses at a riding stable appeared depressed last night. This morning two are dead. Five of the other horses have congested mucous membranes. Four are standing with their muzzles submerged in the water tank. Others show signs of abdominal discomfort and are urinating frequently. The urine appears grossly normal. Cantharidin toxicity is confirmed by high-pressure liquid chromatography of urine. Which one of the following management recommendations is most likely to decrease horses' exposure to cantharidin (blister) beetles? a. Feed only alfalfa that has been stored longer than 4 months. b. Feed only cubed alfalfa. c. Feed only cut-and-crimped alfalfa. d. Feed only first-cutting alfalfa. e. Feed only pelleted alfalfa. d. Feed only first-cutting alfalfa. You are presented with an adult ferret with an episodic and worsening history of posterior weakness, fatigue after exercise, ataxia, stargazing, and generalized muscular twitching. Which one of the following choices is the most common cause of hypoglycemia in ferrets? a. Hepatic lymphoma b. Hypoadrenocorticism c. lnsulinoma d. Malnutrition e. Septicemia c. lnsulinoma For the past five days, mortality in neonatal piglets on a large swine farm has approached 100%. Clinical examination reveals dehydrated, vomiting piglets with severe, greenish-yellow, watery diarrhea. Older pigs on the farm are diarrheic and vomiting. Which one of the following choices is most likely to cause these signs? a. Clostridium difficile b. Hemagglutinating encephalomyelitis c. Porcine proliferative enteritis d. Swine dysentery e. Transmissible gastroenteritis e. Transmissible gastroenteritis Which one of the following findings would be the most likely on urinalysis in a cat in chronic renal failure? a. Crystalluria b. Hematuria c. Urine specific gravity greater than 1.024 d. Cellular casts e. lsosthenuria e. lsosthenuria A wild adult male mallard duck from a local marsh is evaluated because of paresis of the legs and green diarrhea. During the next 24 hours, the duck develops paralysis of the wings, loses control of its neck, and then dies. On postmortem examination, there are no gross or light microscopic abnormalities. Maggots are found within the proventriculus. Which of the following organisms is most likely responsible for the duck's condition? a. Aspergillus fumigatus b. Baylisascaris procyonis c. Clostridium botulinum d. Listeria monocytogenes e. Toxoplasma gondii c. Clostridium botulinum Which one of the following choices is the most significant risk factor for feline leukemia virus (FeLV) infection in the cat? a. Age b. Breed c. Gender d. Geographic location e. Time of year a. Age 1Which one of the following choices most accurately describes the symptoms of BVDV (bovine viral diarrhea virus)-infected cattle? a. The cattle usually appear clinically normal. b. The cattle usually exhibit characteristic mucosa! lesions. c. The cattle usually have chronic diarrhea. d. The cattle usually have intermittent diarrhea. e. The cattle usually have hypotrichosis and secondary respiratory infections. a. The cattle usually appear clinically normal. A 5-year-old, female cat is presented with a history of lethargy, weight loss, diarrhea, and antibiotic unresponsive fever. On examination the cat has yellow mucous membranes, extensive gingivitis, and is depressed and severely emaciated. Abdominal palpation reveals multiple masses and irregularly shaped kidneys. Abdominocentesis produces straw-colored, viscous fluid with a specific gravity of 1.040. Macrophages, neutrophils, and lymphocytes are evident on cytological exam of the fluid. Which one of the following choices is most likely diagnosis? a. Chronic renal failure b. Mycoplasma felis c. Panleukopenia d. Feline infectious peritonitis e. Hemobartonellosis