medium · NCLEX-RN psychosocial

The nurse is caring for a client with anorexia nervosa who has severely low serum magnesium and potassium. Thiamine is ordered.

When should the nurse administer the thiamine?

  1. Immediately before or during the first reintroduction of carbohydrates.
  2. At bedtime to minimize the risk of gastrointestinal upset.
  3. Only after the serum potassium and magnesium levels are normalized.
  4. Two hours after the first meal to ensure no vomiting occurs, for this client.

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