A nurse is preparing to administer promethazine 25 mg IM to a client. Available is promethazine 50 mg/ml. How many ml administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero)
The Correct Answer is ["0.5"]
To calculate the volume (mL) needed to administer 25 mg of promethazine using a concentration of 50 mg/mL, you can use the following formula:
Volume (mL) = Dose (mg) / Concentration (mg/mL)
In this case, the dose is 25 mg, and the concentration is 50 mg/mL:
Volume (mL) = 25 mg / 50 mg/mL = 0.5 mL
So, the nurse should administer 0.5 mL of promethazine.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["300"]
Explanation
-
Convert tablespoons to milliliters:
- 1 tablespoon (Tbsp) = 15 mL
-
Determine the concentration of guaifenesin:
- The concentration is 100 mg per 5 mL
-
Calculate the amount of guaifenesin per 1 tablespoon (15 mL):
- First, find out how many milligrams are in 1 mL:
- 100 mg / 5 mL = 20 mg/mL
- Then, multiply by 15 mL:
- 20 mg/mL × 15 mL = 300 mg
- First, find out how many milligrams are in 1 mL:
So, the client is taking 300 mg of guaifenesin with each dose.
Correct Answer is ["1.5"]
Explanation
To calculate the number of tablets to administer, you can use the following calculation:
Number of tablets = Desired dose (mg) / Tablet strength (mg per tablet)
Number of tablets = 15 mg / 10 mg per tablet
Number of tablets = 1.5 tablets
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