Vitamin D Flashcards
1
Q
Pharmacologic Classification
A
Bone resorption inhibitor
2
Q
Pregnancy Category
A
Pregnancy Category C (okay in prenatal vitamins)
3
Q
Mechanism of Action
A
- Elevates serum calcium levels
- Decreases bone resorption and demineralization
4
Q
What are the two types of vit. D?
A
- Vitamin D2 = ergocalciferol (drug form)
- Vitamin D3 = cholecalciferol (produced by body in response to sunlight - shift to therapeutic use of this type)
5
Q
Indications
A
- Hypocalcemia
- Hypoparathyroidism
6
Q
Contraindications
A
- Hypercalcemia
- Vit. D toxicity
7
Q
Precautions
A
- renal failure
8
Q
What could a deficiency cause?
A
- rickets
- osteoporosis
- thought to play a role in immune disorders, cancers, diabetes
9
Q
Drug Interactions
A
- Thiazide diuretics
- Digoxin
- Magnesium anatacids or supplements
- Orlistat
- Corticosteroids
10
Q
Adverse effects
A
- None at normal doses
- Serious: hypercalcemia symptoms
( bone pain, lethargy, anorexia, nausea/vomiting, increased urination, hallucinations, dysrhythmias)
11
Q
Nursing Responsibilities
A
- Assess sclera, skin pigment, bowl movements, and lab results for liver function
- Assess for adverse effects of vit. D therapy
- Monitor serum calcium, magnesium, alkaline phosphatase, creatinine, and phosphate levels
- Monitor for signs of hypercalcemia
12
Q
Patient/Family Teaching
A
- Consume dietary sources of vit. D
- Take vit. D exactly as directed
- Take w/ meals
- Report signs of excessive vit. D
- Immediatly report yellowing of skin or eyes, pale bowel movements, or darkened urine
