A nurse is caring for a client who has metabolic acidosis and is receiving sodium bicarbonate IV bolus and infusion to correct the pH imbalance. Which of the following laboratory values should the nurse monitor to evaluate the effectiveness of the therapy?

Choice A reason: This is incorrect because 0.9% sodium chloride (normal saline) is an isotonic solution, not a hypotonic one. Isotonic solutions have the same concentration of solutes as blood plasma and do not cause fluid movement across the cell membrane.

Choice B reason:

This is incorrect because 0.9% sodium chloride (normal saline) is an isotonic solution, not a hypertonic one. Hypertonic solutions have a higher concentration of solutes than blood plasma and cause fluid to move out of the cells and into the vascular space.

Choice C reason:

This is correct because 0.9% sodium chloride (normal saline) is an isotonic solution that will expand the vascular space by adding fluid without changing the concentration of solutes. This is useful for patients with hyponatremia (low sodium level in the blood) who need to restore their fluid and electrolyte balance.

Choice D reason:

This is incorrect because 0.9% sodium chloride (normal saline) is an isotonic solution that will expand the vascular space by adding fluid without changing the concentration of solutes. It will not have no effect on fluid movement, as it will increase the intravascular volume.

Choice A reason:

Monitoring neurological status is a priority intervention for a client who has overhydration and hyponatremia because these conditions can cause cerebral edema, increased intracranial pressure, and altered mental status. The nurse should assess the client for signs of confusion, lethargy, seizures, and coma, and report any changes to the provider.

Choice B reason:

Administering sodium polystyrene sulfonate is not indicated for a client who has overhydration and hyponatremia. This medication is used to treat hyperkalemia by exchanging sodium ions for potassium ions in the intestine. It has no effect on sodium levels or fluid balance.

Choice C reason:

Providing oral hygiene frequently is a supportive intervention for a client who has overhydration and hyponatremia, but it is not a priority. Oral hygiene can help prevent dry mouth, infections, and discomfort caused by fluid retention and electrolyte imbalance. However, it does not address the underlying causes or complications of the disorder.

Choice D reason:

Restricting sodium intake as prescribed is an essential intervention for a client who has overhydration and hyponatremia. Sodium intake can affect the serum sodium level and the fluid balance in the body. Excessive sodium intake can worsen fluid retention and edema, while inadequate sodium intake can exacerbate hyponatremia. The nurse should follow the provider's orders regarding sodium restriction and educate the client on how to avoid high-sodium foods and beverages.

Choice E reason:

Encouraging foods high in protein is not appropriate for a client who has overhydration and hyponatremia. Protein intake can affect the serum osmolality and the fluid distribution in the body. High-protein foods can increase the osmotic pressure in the blood vessels, drawing more fluid from the interstitial and intracellular spaces. This can worsen overhydration and hyponatremia by diluting the serum sodium level further. The nurse should consult with a dietitian regarding the optimal protein intake for the client.