A nurse is conducting a nutritional class on minerals and electrolytes. The nurse should include which of the following foods is a major source of magnesium?

A. Prime the blood tubing with dextrose 5% in water:
Priming the blood tubing with dextrose 5% in water is not appropriate for a blood transfusion. Blood tubing should be primed with normal saline, not dextrose solutions, to prevent hemolysis of the blood components.
B. Check vital signs before transfusion:
Before initiating a blood transfusion, it's essential to assess the client's vital signs, including temperature, pulse, respiratory rate, and blood pressure. Monitoring vital signs before, during, and after the transfusion helps identify any adverse reactions promptly.
C. Insert an IV with a 13-gauge needle:
Using a 13-gauge needle for IV insertion is not appropriate for a blood transfusion. Typically, a smaller gauge needle, such as 18 or 20 gauge, is used for venous access during a blood transfusion to minimize discomfort and reduce the risk of hemolysis.
D. Transfuse the blood product within 5 hr after removing it from refrigeration:
Blood products should be transfused within a specific timeframe after removal from refrigeration to minimize the risk of bacterial growth and subsequent infection. Typically, this timeframe is within 4 hours for packed red blood cells and within 24 hours for platelets. Adhering to the recommended timeframe ensures the safety and efficacy of the transfusion.
E. Check the expiration date of the blood product with a second nurse:
Verifying the expiration date of the blood product with a second nurse or healthcare provider is a crucial step to ensure patient safety and prevent the administration of expired blood products. This double-check process helps mitigate the risk of administering outdated or expired blood components.

A) Calcium gluconate 1.5 grams IV now: Calcium gluconate is administered to counteract the effects of hyperkalemia by stabilizing the myocardial cell membrane. It does not lower potassium levels but helps protect the heart from potential dysrhythmias associated with high potassium levels.

B) Dextrose 50% injection (50ml) IV push now: Dextrose 50% injection, also known as D50W, is administered to temporarily shift potassium from the extracellular space into the intracellular space, thereby lowering serum potassium levels. It is commonly used in combination with insulin to facilitate the movement of potassium into cells.

C) Colace 100 mg PO now: Colace is a stool softener and does not affect serum potassium levels. It is not indicated for the treatment of hyperkalemia.

D) Regular insulin 10 units IV now: Regular insulin is administered with dextrose to facilitate the movement of potassium from the extracellular space into the intracellular space. Insulin stimulates the cellular uptake of glucose, which in turn drives potassium into cells along with glucose.

E) Potassium chloride 20 mEq orally now: Potassium chloride is contraindicated in the treatment of hyperkalemia as it would further increase serum potassium levels. It is typically used to supplement potassium in clients with hypokalemia, not hyperkalemia.