A nurse is preparing to administer cefazolin 1 g IM. The nurse reconstitutes a 1 g vial of cefazolin with sterile water to yield a final concentration of 225 mg/mL. How many ml should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing
The Correct Answer is ["4"]
Calculations:
Desired dose = 1g = 1000 mg
Concentration = 225 mg/mL
Volume = Desired dose / Concentration = 1000 mg / 225 mg/mL = 4.44 mL
Rounded to the nearest whole number = 4 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["7.5"]
Explanation
Calculations:
Desired dose = 15 mg
Concentration = 10 mg/5 mL
Volume = Desired dose / Concentration = 15 mg / (10 mg/5 mL) = 7.5 mL
The nurse should administer 7.5 mL of codeine.
Correct Answer is ["2560"]
Explanation
- Convert ounces to milliliters (mL):
-
1 ounce (oz) is approximately equal to 30 mL.
-
Orange juice: 12 oz * 30 mL/oz = 360 mL
-
Ice chips: 12 oz * 30 mL/oz = 360 mL (Note: Ice melts to about half its volume, so we'll divide this by 2 later)
-
Coffee: 6 oz * 30 mL/oz = 180 mL
-
Skim milk: 4 oz * 30 mL/oz = 120 mL
-
Water: 24 oz * 30 mL/oz = 720 mL
- Account for ice chips melting:
- Ice chips: 360 mL / 2 = 180 mL
- Add up all the fluid intake in mL:
- Orange juice: 360 mL
- Ice chips: 180 mL
- Coffee: 180 mL
- Skim milk: 120 mL
- Water: 720 mL
- IV fluid: 1000 mL
Total: 360 + 180 + 180 + 120 + 720 + 1000 = 2560 mL
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