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?
Isotonic solution
Total Parenteral Nutrition (TPN)
Hypertonic solution
Hypotonic solution
The Correct Answer is D
A) Isotonic solution: Isotonic solutions, such as 0.9% sodium chloride, maintain the current sodium levels and fluid balance but do not correct hypernatremia. They are not suitable for lowering elevated sodium levels.
B) Total Parenteral Nutrition (TPN): TPN is used for providing comprehensive nutritional support and does not address electrolyte imbalances such as hypernatremia. It is not used to manage sodium levels directly.
C) Hypertonic solution: Hypertonic solutions, such as 3% sodium chloride, increase sodium levels and are used for treating hyponatremia or specific conditions requiring higher sodium concentrations. They would worsen hypernatremia.
D) Hypotonic solution: Hypotonic solutions, like 0.45% sodium chloride (half-normal saline) or Dextrose 5% in water (D5W), are appropriate for treating hypernatremia. They help dilute the sodium concentration in the blood and aid in correcting the elevated sodium levels
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. 8 hr - Infusing one unit of packed red blood cells (PRBCs) over 8 hours is too long. Typically, PRBCs are infused over a shorter period to avoid complications.
B. 4 hr - Infusing PRBCs over 4 hours is still within acceptable limits, but the standard time for PRBC transfusion is usually shorter.
C. 6 hr - Infusing PRBCs over 6 hours is longer than usual. The recommended duration for infusing one unit of PRBCs is generally shorter.
D. 2 hr - The standard time to infuse one unit of PRBCs is typically between 1.5 to 2 hours. This duration helps ensure the effective delivery of red blood cells while minimizing the risk of transfusion reactions.
Correct Answer is D
Explanation
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.
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