Pharmacological and Parenteral Therapies NCLEX Questions Related

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The nurse is initiating an IV infusion of lactated Ringer's (LR) for the client in shock. What is the purpose of LR for this client?

  • A. Increase fluid volume and urinary output
  • B. Draw water from the cells into the blood vessels
  • C. Provide dextrose and nutrients to prevent cellular death
  • D. Replace potassium and magnesium for cardiac stabilization
Correct Answer: A

Rationale: A: LR is an isotonic crystalloid solution containing multiple electrolytes in approximately the same concentration as plasma. It enters the cells from the blood, provides fluids, and increases urinary output. B: A hypertonic solution draws fluid from the cells into the vascular compartment; LR is isotonic. C: LR alone does not contain dextrose. Formulations with dextrose are available. D: Magnesium is not a component of LR.