calcium metabolism Flashcards
1
Q
hypercalcemia symptoms
A
1.inhibits opening of the na channels so decreases excitability
2. polyuria
3. short qt
muslce weakness
4. constipation and bowel hypomotility
5. kidney stones
5. dehydration due to kidneys filtering all thatcalcium which drags water along with it
2
Q
hypocalcemia symptoms
A
- trousseas sign
2.osteoporosis
muslce cramping
3.tetany - over excitement of na channels
4.proolonged qt interval - pins and needles -paresthesia
3
Q
causes of hypercalcemia
A
endorcine:
hyperthyroidism (t4 acts on bone) or adenoma of parathyroid glands
adenoma of the pituitary glands
misscelanous
milk alkali
kindey failure- acute
granuloatous:
sarcodosis +TB
medications:
lithium
vit d
4
Q
causes of hypo
A
digeorge syndrome hypopartahyroidims thyroidectomy parathyroidectomy vit d deficiency radiation a deficiency of magnesium which helps make parathyroid hormone
5
Q
oppsite of osteoporosis
A
is osteopetrosis so increase in bone denisty bones are hard af