Vitamin A Flashcards
1
Q
Why do we need Vit. A?
A
Essential for immunity, vision, development of teeth & bones.
2
Q
What could a deficiency cause?
A
Night-blindness
3
Q
Mechanism of Action
A
- Co-factor in sythesis of mucopolysaccharides
- Synthesis of cholesterol
- Metabolism of steroids
4
Q
Adverse Effects
A
- Hives
- Swelling of lips & tongues
5
Q
What could an overdose cause?
A
Hypervitaminosis: fatigue, nausea, vomiting, headache, gingivitis
6
Q
Pregnancy Category
A
Pregnancy Category A (@ RDA values)
7
Q
Contraindicated
A
Pregnancy @ high doses
8
Q
Drug Interactions
A
- Mineral oil can deplete fat soluble vitamins
- Oral contraceptives can increase levels
9
Q
Nursing Responsibilities
A
- Encourage Vit. A rich diet
- Report symptoms of nausea, vomiting, cracking lips
- Notify provider of pregnancy
