06 - parathyroid diseases of horses

Question 1

Question 2

1. what is the stimulus for parathyroid hormone (PTH) release?

Answer 2

1. decreased calcium

Question 3

increased PTH results in…

Answer 3

Question 4

(primary hyperparathyroidism)

1. uncommon
2. characterized by elevations in what two things?
3. effect on soft tissue?

bone?

Answer 4

2. ^ ionized Ca and PTH concentrations
3. soft tissue calcification

hypertrophic osteopathy

Question 5

(Nutritional secondary hyperparathyroidism)

1. aka big head, bran disease
2. calcium deficiency relative to what?

Answer 5

2. excess PO4

(Ca:PO4 ratio less than 1.5:1)

Question 6

(Nutritional secondary hyperparathyroidism)

(radiography)

1. bones of head and neck show what?

Answer 6

1. decreased radioopacity

Question 7

(Nutritional secondary hyperparathyroidism)

(dx)

1.

Question 8

(renal secondary hyperparathyroidism)

1. characterized by normal to low ionized calcium concentration, with an elevated PTH concentration. serum total calcium concentration may be mildly elevated
2. occurs in association with acute to chronic renal failure

Question 9

(vitamin D toxicosis)

1. characterized by hypercalcemia

concentration of PTH?

2. what plant can cause hypercalcemia if ingested?

Answer 9

1. low
2. Cestrum Diurnum

Question 10

(tumors)