ATI LPN
Study Guide for Fundamentals of Nursing Care: Concepts, Connections & Skills
Chapter 38 : Intravenous Therapy Questions
Question 1 of 5
Match each IV fluid with the appropriate term that accurately describes the solution's tonicity: D5\%NS
Correct Answer: C
Rationale: D5%NS is hypertonic due to added dextrose, increasing osmolarity above plasma.
Question 2 of 5
Match each IV fluid with the appropriate term that accurately describes the solution's tonicity: 1/2 NS
Correct Answer: B
Rationale: 1/2 NS (0.45% NS) is hypotonic, promoting fluid shift into cells.
Question 3 of 5
Match each IV fluid with the appropriate term that accurately describes the solution's tonicity: 0.9% NS
Correct Answer: A
Rationale: 0.9% NS is isotonic, matching plasma osmolarity, so fluid stays in the intravascular space.
Question 4 of 5
Match each IV fluid with the appropriate term that accurately describes the solution's tonicity: D5W
Correct Answer: B
Rationale: D5W is initially isotonic but becomes hypotonic as dextrose is metabolized, causing fluid to enter cells.
Question 5 of 5
Match each IV fluid with the appropriate term that accurately describes the solution's tonicity: LR
Correct Answer: A
Rationale: Lactated Ringer's (LR) is isotonic, closely mimicking plasma osmolarity.