Nokea
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.
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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: Normosol R
- A. Isotonic
- B. Hypotonic
- C. Hypertonic
Correct Answer: A
Rationale: Normosol R is isotonic, designed to match plasma osmolarity.
A __ forms when one of the agents in a solution separates from the solvent and becomes a solid, insoluble product that looks cloudy, hazy, or like fine floating crystals.
- A. Emulsion
- B. Precipitate
- C. Solution
- D. Suspension
Correct Answer: B
Rationale: A precipitate is a solid that forms in a solution when components become insoluble, appearing cloudy or crystalline.
Which of the following IV catheters with plastic cannulas are the smallest in diameter?
- A. 16 g
- B. 18 g
- C. 21 g
- D. 25 g
- E. 29 g
Correct Answer: E
Rationale: Smaller gauge numbers indicate larger diameters; $29 \mathrm{~g}$ is the smallest diameter.
__ refers to a type of medication that causes blistering, necrosis, and sloughing of tissue when allowed to enter the subcutaneous tissue.
- A. Vesicant
- B. Non-vesicant
- C. Isotonic
- D. Hypertonic
Correct Answer: A
Rationale: Vesicant medications cause severe tissue damage, including blistering and necrosis, if they leak into subcutaneous tissue.