Nokea
The IVPB is to infuse over 30 minutes. The PB solution bag is 50 mL. The tubing's drop factor is 12. Calculate the gravity infusion rate. Show your work.
Correct Answer: 20 gtt/min
Rationale: Formula: (50 mL ? 12 gtt/mL) ÷ 30 min = 600 ÷ 30 = 20 gtt/min.
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Match each IV fluid with the appropriate term that accurately describes the solution's tonicity: D5\%NS
- A. Isotonic
- B. Hypotonic
- C. Hypertonic
Correct Answer: C
Rationale: D5%NS is hypertonic due to added dextrose, increasing osmolarity above plasma.
The interaction between the two drugs that causes a change in the activity or components of one or more of the drugs is known as a
- A. Synergism
- B. Drug interaction
- C. Antagonism
- D. Precipitation
Correct Answer: B
Rationale: A drug interaction occurs when one drug alters the effect or composition of another, potentially affecting efficacy or safety.
The health care provider has ordered the IV to infuse at 30 mL/hr. The tubing's drop factor is 60. Calculate the gravity infusion rate.
Correct Answer: 30 gtt/min
Rationale: Formula: (30 mL ? 60 gtt/mL) ÷ 60 min = 1800 ÷ 60 = 30 gtt/min.
How does an intermittent prn lock differ from a traditional IV site?
- A. The prn lock is used for continual infusion of IV fluids or medications.
- B. The patient with a prn lock must be stuck each time medication needs to be administered.
- C. The prn lock provides subcutaneous access rather than IV access.
- D. The prn lock allows for intermittent infusion of IV fluids or medications without requiring a continual infusion of fluids.
Correct Answer: D
Rationale: A prn lock (saline lock) allows intermittent access without continuous infusion, unlike traditional IVs that often run fluids continuously.
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.