A nurse is preparing to administer penicillin G benzathine 1,200,000 units IM to a school-age child. Available is penicillin G benzathine injection 600,000 units/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 zero.)
The Correct Answer is ["2"]
To calculate the volume of penicillin G benzathine injection required, divide the prescribed dose by the concentration available. In this case, 1,200,000 units prescribed divided by 600,000 units per mL results in 2 mL.
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Related Questions
Correct Answer is ["250"]
Explanation
To calculate the infusion rate for an IV pump, you would divide the total volume of the IV fluid to be infused by the number of hours over which the infusion is to run. In this case, 500 mL of dextrose 5% in 0.9% sodium chloride is to be infused over 2 hours. Therefore, the calculation would be 500 mL divided by 2 hours, which equals 250 mL per hour. So, the nurse should set the IV pump to deliver 250 mL/hr.
Correct Answer is ["0.042"]
Explanation
To convert milligrams (mg) to grams (g), one must remember that 1 gram is equivalent to 1000 milligrams. Therefore, to find the equivalent in grams for 42 mg, the amount in milligrams should be divided by 1000. Doing the math, 42 mg divided by 1000 gives 0.042 grams. When rounding this to the nearest thousandth, it remains 0.042, as the fourth decimal place is not significant enough to round up the third decimal place. Hence, 42 mg is equivalent to 0.042 g.
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