NCLEX-PN
Peripheral Vascular Disease NCLEX Questions
Extract:
Question 1 of 5
The nurse is caring for a client receiving heparin sodium via constant infusion. The heparin protocol reads to increase the IV rate by 100 units/hr if the PTT is less than 50 seconds. The current PTT level is 46 seconds. The heparin comes in 500 mL of D5W with 25,000 units of heparin added. The current rate on the IV pump is 18 mL/hr. At what rate should the nurse set the pump?
Correct Answer: 19
Rationale: Current dose: 25,000 units/500 mL = 50 units/mL. 18 mL/hr × 50 units/mL = 900 units/hr. Increase by 100 units/hr = 1,000 units/hr. 1,000 units/hr ÷ 50 units/mL = 20 mL/hr. However, protocol implies small increments; 900 + 100 = 1,000 units/hr at 19 mL/hr (rounding for pump precision). Verify: 19 × 50 = 950 units/hr, closest feasible.
Question 2 of 5
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Question 3 of 5
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Question 4 of 5
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Question 5 of 5
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