ATI Pediatrics Test Bank Related

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Which of the following intravenous solutions is hypotonic?

  • A. Normal saline
  • B. Ringer's lactate
  • C. 0.45% saline
  • D. 5% dextrose in normal saline  A1 PASSERS TRAINING, RESEARCH, REVIEW & DEVELOPMENT COMPANY MEDICAL SURGICAL NURSING SET F
Correct Answer: C

Rationale: A hypotonic solution has a lower concentration of solutes compared to the cells in the body. 0.45% saline is hypotonic because it has a lower concentration of sodium chloride compared to the normal extracellular fluid in the body. When this solution is administered intravenously, water will move into the cells to balance the concentration gradient, potentially causing cellular swelling. A hypotonic solution is used to rehydrate cells in cases of hypernatremia or dehydration with cellular dehydration.