Quiz Corner

1. A 12-year-old toy poodle presents with anorexia, polyuria/ polydipsia, bone pain, and epistaxis. Laboratory testing shows a nonregenerative, normocytic anemia; hypercalcemia; and a monoclonal gammopathy. The most likely diagnosis is which of the following?

   1. Chronic granulocytic leukemia

   2. Multiple myeloma

   3. Myelodysplastic syndrome

   4. Immune-mediated hemolytic anemia

   5. Babesiosis

2. An 8-year-old, 350-kg, Arabian gelding is referred to a clinic for evaluation and treatment of an infected wound. Treatment on the farm included gentamicin at 4 mg/kg intravenously 4 times a day for 10 days. Upon plasma biochemical analysis, the horse is azotemic [creatinine 6.8 mg/dL (601 μmol/L)]. Which of the following is the most likely explanation for these findings?

   1. Acute tubular necrosis

   2. Chronic tubular necrosis

   3. Acute glomerulonephritis

   4. Chronic glomerulonephritis

   5. Active pyelonephritis

3. Laboratory findings consistent with malignancy include which of the following?

   1. Normal ionized calcium concentration with elevated parathyroid hormone (PTH) concentration.

   2. Elevated ionized calcium concentration with elevated PTH concentration.

   3. Elevated ionized calcium concentration with suppressed PTH concentration.

   4. Low ionized calcium concentration with low-normal concentration of PTH.

   5. Normal ionized calcium concentration with normal concentration of PTH.

4. Which of the following is the treatment of choice for mucoceles?

   1. Drainage and application of warm compresses

   2. Surgical excision of the affected salivary gland

   3. Antibiotics

   4. Phenobarbital

5. A cow presents with one markedly swollen quarter of the mammary gland, fever (T = 104.3°F), tachycardia (HR = 115 bpm), severe dehydration (skin tent = 5 seconds), and depression (recumbent, unable to rise). Which of the following is correct regarding this case?

   1. Milk culture results will grow a Gram-negative organism.

   2. Recumbency should be corrected by IV 23% calcium borogluconate infusion.

   3. Serum electrolyte measurement should precede fluid selection.

   4. If pregnant, the risk of abortion should be discussed with the producer.

   5. Antibiotic therapy should be by the intramammary route alone.

(See p. 850 for answers.)

Questions and answers were derived from Review Questions and Answers for Veterinary Boards 2nd ed., a 5-volume series including Basic Sciences, Clinical Sciences, Small Animal Medicine and Surgery, Large Animal Medicine and Surgery, and Ancillary Topics, by kind permission of the publisher, Mosby–Year Book, Inc., St. Louis, Missouri.