The physician ordered 1.5 mg of subcutaneous epinephrine stat. The medication is available in an ampule labeled 1g/1000ml. How many milliliters should the nurse give?
1.5 mL/dose
2mL/dose
0.5 mL/dose
1 mL/dose
The Correct Answer is A
First, convert the available concentration from ratio to metric units:
- Availability: 1 g/1000 mL
- Convert grams (g) to milligrams (mg): 1g=1000mg
- Concentration: 1000mg/1000ml=1mg/ml
Next, use the concentration to determine the volume needed for the ordered dose:
- Ordered Dose: 1.5mg
- Available Concentration: 1mg/ml
1.5mg ÷ 1mg/ml= 1.5ml
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Step 1: Identify the ordered doses
- Regular insulin: 14 units.
- NPH insulin: 28 units.
Step 2: Add the doses together
- 14 + 28 = 42 units total.
Correct Answer is C
Explanation
Step 1: Interpret the concentration
- After reconstitution, the solution contains 250 mg per 1.5 mL.
- This means: 250 ÷ 1.5 = 166.7 mg per mL.
Step 2: Calculate the volume needed for 400 mg
- Ordered dose = 400 mg.
- Concentration = 166.7 mg per mL.
- Volume = 400 ÷ 166.7 ≈ 2.4 mL.
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