Where is most of the calcium stored in the body?
What is the primary control of intestinal calcium absorption?
What effect do glucocorticoids have on absorption of calcium?
Renally, calcium is reabsorbed via co-transport in the ascending limb with what ion?
PTH increases reabsorption of calcium in what part of the nephron?
distal convoluted tubule
Vitamin D is transformed into it's active form in what organ?
Would a dog with osteopenia neccesarily have a low serum calcium?
Is the calcium in the bones quickly mobilized?
What are the three forms that serum calcium can take?
Protein Bound Calcium
What are three compounds that calcium complexes with?
What form of serum calcium is active?
Would a dog with low total calcium always have clinical signs of hypocalcemia?
How will an increase in pH shift the form of serum calcium?
How will an alkaline pH change shift the form of serum calcium?
How will a decrease in pH shift the form of serum calcium?
How will an acid pH change shift the form of serum calcium?
How does Hypoalbuminemia affect ionized calcium?
How does Hypoalbunimia affect total calcium?
What is the formula to determine calcium levels in the presence of abnormal albumin levels?
Adjusted Ca = Calcium - Albumin + 3.5
How does the normal serum levels of young animals compare with adults?
younger animals have higher normal serum calcium
What are three types of hyperparathyroidism?
Renal Secondary Hyperparathyroidism
Nutritional Secondary Hyperparathyroidism
Hypercalcemia has what effect at the collecting ducts?
interferes with ADH
Hypercalcemia has what effect at the renal tubules?
Hypercalcemia has what effect at the glomerulus?
afferent limb vasoconstriction
When I say hypercalcemia, you say...
What is a less likely neoplasia that may cause hypercalcemia?
Squamous Cell Carcinoma
What are the two main mechanisms for hypercalcemia by malignancy?
bone lysis (via tumor produced cytokines)
What are the differential diagnosis for hypercalcmia? (7)
Diffuse bone disease
Is Hypercalcemia secondary to renal failure more common in dogs or cats?
What are the three mechanisms of hypercalcemia secondary to renal failure?
Decreased renal calcium excretion
Increased responsiveness to Vitamin D
Autonomous parathyroid gland secretion
What are the causes of Primary Hyperparathyroidism?
What is the most common cause of primary hyperparathyroidism?
How do you diagnose primary hyperparathyroidism?
High or normal PTH with hypercalcemia
Ultrasound of the neck
What are three causes of Hypervitaminosis D?
Vitamin D containing plants
Vitamin D3 rodenticides
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