A nurse is preparing to administer metronidazole 7.5 mg/kg via intermittent IV bolus to a client who weighs 212 lb. Available is metronidazole 500 mg/100 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 ["145"]
To calculate the dose of metronidazole for a client who weighs 212 lb, the nurse needs to convert the weight to kilograms and multiply it by the prescribed dose of 7.5 mg/kg.
One kilogram is equal to 2.2 lb, so the client's weight in kilograms is 212/2.2 = 96.36 kg. The dose of metronidazole in milligrams is 96.36 x 7.5 = 722.7 mg.
The nurse needs to find out how many mL of the available solution contain this amount of metronidazole.
The available solution has a concentration of 500 mg/100 mL, so the nurse can use a proportion to solve for the volume: 500/100 = 722.7/x.
Cross-multiplying and solving for x gives x = 722.7 x 100 / 500 = 144.54 mL.
The nurse should round the answer to the nearest whole number, so the final answer is 145 mL.
The nurse should administer 145 mL of metronidazole via intermittent IV bolus to the client.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.5"]
Explanation
To calculate how many tablets of lisinopril 5 mg the nurse should administer to achieve a 2.5 mg dose, divide the desired dose by the dose per tablet:
Number of tablets = Desired dose / Dose per tablet
Number of tablets = 2.5 mg / 5 mg/tablet
Number of tablets = 0.5 tablets
Correct Answer is ["60"]
Explanation
To calculate the IV flow rate in gtt/min, you can use the following formula:
Flow rate (gtt/min) = (Volume to be infused (mL) x Drop factor) / Time (min)
In this case, the volume to be infused is 60 mL/hr, the drop factor is 60 gtt/mL, and we want to find the flow rate in gtt/min.
Flow rate (gtt/min) = (60 mL/hr x 60 gtt/mL) / 60 min
Flow rate (gtt/min) = (3600 gtt/hr) / 60 min
Flow rate (gtt/min) = 60 gtt/min
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