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The IVPB is to infuse over 20 minutes. The PB solution bag is 100 mL. The tubing's drop factor is 20. Calculate the gravity infusion rate.
Correct Answer: 100 gtt/min
Rationale: Formula: (100 mL ? 20 gtt/mL) ÷ 20 min = 2000 ÷ 20 = 100 gtt/min.
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Which solution is best when an individual needs only simple water replacement because of lack of fluid intake or loss of body water without loss of electrolytes, known as hypertonic dehydration?
- A. Isotonic solution
- B. Hypotonic solution
- C. Hypertonic solution
Correct Answer: B
Rationale: Hypotonic solutions provide water to rehydrate cells without adding excess electrolytes, suitable for hypertonic dehydration.
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.
The health care provider has ordered the IV to infuse at 125 mL/hr. The tubing's drop factor is 20. Calculate the gravity infusion rate.
Correct Answer: 42 gtt/min
Rationale: Formula: (125 mL ? 20 gtt/mL) ÷ 60 min = 2500 ÷ 60 = 41.67, rounded to 42 gtt/min.
Which vascular access device(s) is(are) commonly used for scalp veins in newborns?
- A. Butterfly needle
- B. Intracath
- C. Central line
- D. PICC line
Correct Answer: A
Rationale: Butterfly needles are small and ideal for accessing delicate scalp veins in newborns.