Questions and Answers
What classifications does Cyanocobalamin (Vitamin B12) fall under?
What is the action of Cyanocobalamin (Vitamin B12)?
Coenzyme for metabolic functions, necessary for cell growth and replication, hematopoiesis, myelin synthesis.
What is the dosage for pernicious anemia when using Cyanocobalamin (Vitamin B12)?
1000 mcg/day for 7 days, then every other day for 7 days, then every 3-4 days for 2-3 weeks.
What are some side effects of Cyanocobalamin (Vitamin B12)?
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What are the contraindications for using Cyanocobalamin (Vitamin B12)?
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How is Cyanocobalamin (Vitamin B12) absorbed and metabolized?
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What nursing considerations should be observed while administering Cyanocobalamin (Vitamin B12)?
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Study Notes
Cyanocobalamin (Vitamin B12) Overview
- Classification: Acts as a coenzyme and vitamin, crucial for preventing anemia.
Actions of Cyanocobalamin
- Functions as a coenzyme for various metabolic processes.
- Essential for cell growth, replication, hematopoiesis, and myelin synthesis.
- Treatment indications include pernicious anemia, malabsorption conditions, and increased B12 needs during pregnancy, thyrotoxicosis, hemorrhage, malignancy, and hepatic/renal diseases.
Dosage Information
- For pernicious anemia: Initial dose of 1000 mcg/day for 7 days, followed by 1000 mcg every other day for another 7 days, and then every 3-4 days for 2-3 weeks.
- For vitamin deficiency: Start with 30 mcg/day for 5-10 days, transition to 100-200 mcg/month thereafter.
Side Effects
- Potential side effects include diarrhea and pruritus (itching).
Contraindications and Cautions
- Contraindicated in individuals with hereditary optic nerve atrophy.
- Caution is advised for patients with folic acid deficiency, anemia, and premature neonates.
Absorption and Metabolism
- Absorbed in muscle tissue, metabolized in the liver, and excreted through urine.
Nursing Considerations
- Monitor symptoms of B12 deficiency: anorexia, ataxia, fatigue, hyporeflexia, insomnia, irritability, positional sense loss, pallor, and exertional palpitations.
- Assess for heart failure, pulmonary edema, and hypokalemia, especially in heart patients.
- Regularly check serum potassium, serum B12 levels, reticulocyte counts, and reversal of deficiency symptoms.
- Lifetime treatment may be necessary for pernicious anemia patients.
- Encourage consumption of B12-rich foods, such as clams, oysters, and dairy products, and report infections promptly.
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Test your knowledge on Cyanocobalamin, also known as Vitamin B12, through these flashcards. Explore various aspects such as its classification, actions, and dosage requirements. Ideal for students and professionals seeking to enhance their understanding of this vital nutrient.
