A nurse is caring for a client who has hypernatremia and requires IV fluid therapy. Which solution should the nurse prepare to infuse for this client?

A) Constipation: Elevated potassium levels (hyperkalemia) typically affect neuromuscular and cardiac function rather than gastrointestinal motility. Constipation is more commonly associated with conditions like hypokalemia or electrolyte imbalances affecting the gastrointestinal system.

B) Polyuria: Polyuria, or excessive urination, is not directly caused by hyperkalemia. It can occur due to conditions like diabetes mellitus or diabetes insipidus, or as a side effect of certain medications like diuretics. Hyperkalemia does not typically lead to increased urine output and may even lead to oliguria if severe renal impairment occurs.

C) EKG with a U wave: The presence of a U wave on an electrocardiogram (EKG) is typically associated with hypokalemia, not hyperkalemia. U waves are seen when potassium levels are low, reflecting delayed repolarization of the ventricles. In hyperkalemia, EKG changes more commonly include peaked T waves, prolonged PR interval, and widened QRS complexes.

D) Paresthesias of the extremities: Hyperkalemia can cause paresthesias, which are sensations of tingling or numbness, particularly in the extremities. This occurs due to the effect of elevated potassium levels on nerve and muscle function. As potassium is essential for maintaining normal neuromuscular function, deviations from normal levels can disrupt action potentials and lead to sensory disturbances like paresthesias.

A) Extreme thirst: While extreme thirst can be associated with electrolyte imbalances, particularly in conditions of dehydration or hypernatremia (elevated sodium levels), a sodium level of 116 mEq/L indicates hyponatremia (low sodium levels). Extreme thirst is less typical for hyponatremia.

B) Paresthesias: Paresthesias, or abnormal sensations like tingling or numbness, are more commonly associated with conditions of low calcium or potassium levels rather than sodium. In hyponatremia, neurological symptoms can occur, but they typically include lethargy or confusion rather than specific paresthesias.

C) Lethargy: Lethargy is a common symptom of severe hyponatremia. Low sodium levels can lead to cerebral edema and neurological disturbances, resulting in symptoms such as lethargy, confusion, and even seizures. This is a direct consequence of the altered osmotic balance affecting brain function.

D) Blood clots: Hyponatremia is not typically associated with an increased risk of blood clots. Blood clots are more related to conditions affecting coagulation factors, which are not directly influenced by sodium levels.