Flashcards in Calcium, Phosphorus, and Magnesium Deck (12):
What are major factors that determine serum calcium levels?
PTH activity: bone resorption
Vitamin D: Enhances Ca reabsorption from bone
Calcitonin: blocks osteoclastic activity
Horses are different in that ____ can affect their serum Ca levels
Hypercalcemia can be caused by:
1. Increased PTH activity
2. Increased Vitamin D activity
3. Neoplasia in bone
4. Renal insufficiency or failure (Horses)
Hypocalcemia often comes about via
Decrease in the protein bound fraction
What are some things that can cause hypocalcemia?
Exocrine pancreatic insufficiency
Chronic renal disease
Protein losing enteropathy
What causes parturient hypocalcemia in cattle?
Excess Calcium loss in milk/to fetus
Decreased target cell response to PTH
Excessive urinary loss of Calcium can be caused by what?
Ethylene glycol toxicosis
What condition can falsely increase organic phosphorus amounts?
What are some factors that can influence serum phosphorus?
Shifting between ECF and ICF
What can cause hypophosphatemia?
Increased Vit D
What can cause hyperphosphatemia?
Acute tumor lysis syndrome