Nokea
Match each IV fluid with the appropriate term that accurately describes the solution's tonicity: D5W
- A. Isotonic
- B. Hypotonic
- C. Hypertonic
Correct Answer: B
Rationale: D5W is initially isotonic but becomes hypotonic as dextrose is metabolized, causing fluid to enter cells.
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Match each IV fluid with the appropriate term that accurately describes the solution's tonicity: 1/2 NS
- A. Isotonic
- B. Hypotonic
- C. Hypertonic
Correct Answer: B
Rationale: 1/2 NS (0.45% NS) is hypotonic, promoting fluid shift into cells.
What is the term for removing air from the IV tubing?
- A. Flushing
- B. Priming
- C. Purging
- D. Venting
Correct Answer: B
Rationale: Priming the IV tubing removes air to prevent air embolism during infusion.
Which of the following explanations of the differences between IV push and IVPB routes of administration are correct?
- A. The IV push route of administration allows direct infusion from the bag of solution at a rapid rate, which pushes the medication in quickly.
- B. The IVPB route of administration allows medications to infuse over a 1- to 2-minute interval.
- C. The IVPB route of administration requires that the medication be dissolved in a volume of fluid, ranging between 50 and 250 mL.
- D. The IV push route of administration provides for direct injection of medication into the port closest to the IV site.
Correct Answer: C,D
Rationale: IVPB involves medication diluted in 50-250 mL, infused over a longer period, while IV push is a direct, rapid injection into the IV port.
Match each IV fluid with the appropriate term that accurately describes the solution's tonicity: LR
- A. Isotonic
- B. Hypotonic
- C. Hypertonic
Correct Answer: A
Rationale: Lactated Ringer's (LR) is isotonic, closely mimicking plasma osmolarity.
The IVPB is to infuse over 30 minutes. The PB solution bag is 100 mL. The tubing's drop factor is 20. Calculate the gravity infusion rate.
Correct Answer: 67 gtt/min
Rationale: Formula: (100 mL ? 20 gtt/mL) ÷ 30 min = 2000 ÷ 30 = 66.67, rounded to 67 gtt/min.