A client receives a prescription for warfarin 2 mg IM daily. The pharmacy delivers a vial labeled, warfarin 5 mg/single-use vial. The instructions read, reconstitute with 2.7 mL of sterile water for injection to yield 2 mg/mL. How many mL should the nurse administer? (Enter the numerical value only.)
The Correct Answer is ["2 mg"]
Volume (mL) = Dose (mg) / Concentration (mg/mL)
Substituting the values, the nurse gets:
Volume (mL) = 2 mg / 2 mg/mL
Volume (mL) = 1 mL
Therefore, the nurse should administer 1 mL of the reconstituted solution to deliver 2 mg of warfarin to the client.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["12","000\u00a0"]
Explanation
- To calculate the units of heparin in 12 hours, multiply the infusion rate by the concentration of heparin and the duration of infusion.
- Infusion rate = 25 mL/hour
- Concentration of heparin = 20,000 units / 500 mL
- Duration of infusion = 12 hours
- Units of heparin in 12 hours = 25 x (20,000 / 500) x 12
- Units of heparin in 12 hours = 12,000
Correct Answer is ["1 mL"]
Explanation
- Convert pounds to kilograms: 176 / 2.2 = 80 kg
- Calculate the dose in mg: 0.05 x 80 = 4 mg
- Calculate the volume in mL: 4 / 4 = 1 mL
- The nurse should administer 1 mL of lorazepam
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