Nokea
In reference to the blood vessels, a word that means hardened is
- A. Aneurysm
- B. Sclerosis
- C. Stenosis
- D. Varicosity
Correct Answer: B
Rationale: Sclerosis describes the hardening of blood vessels, often due to plaque buildup or aging.
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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.
You are about to attempt to initiate an IV on a 97-year-old female with tiny, fragile veins. Which of the following access devices would most likely be your best choice?
- A. 27 g ? 1 in winged butterfly without cannula
- B. 22 g ? 1¼ in intracath
- C. 25 g ? 1 in winged butterfly with cannula
- D. 23 g ? 1 in intracath
Correct Answer: C
Rationale: A $25 \mathrm{~g}$ winged butterfly with cannula is small and suitable for fragile veins, providing stability and reducing trauma.
Characteristics of a 'good' vein site to use for IV initiation include which of the following?
- A. Vein feels firm, hard, and sturdy
- B. Vein has a bifurcation
- C. Vein feels spongy and bouncy
- D. Vein rolls easily
- E. Vein is easy to feel
Correct Answer: C,E
Rationale: A good vein is spongy, bouncy, and palpable, indicating it's healthy and accessible.
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.
Match each IV fluid with the appropriate term that accurately describes the solution's tonicity: 0.45% NS
- A. Isotonic
- B. Hypotonic
- C. Hypertonic
Correct Answer: B
Rationale: 0.45% NS is hypotonic, with lower osmolarity than plasma, causing fluid to enter cells.