A nurse is preparing to administer chlorpromazine 0.55 mg/kg IM to a child who weighs 66 lb. Available is chlorpromazine 25 mg/ml. for injection. How many mL should the nurse 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 ["0.7"]
To calculate the dose of chlorpromazine for a child who weighs 66 lb, first convert the weight to kilograms by dividing by 2.2.
This gives 66 / 2.2 = 30 kg.
Then multiply the weight by the prescribed dose of 0.55 mg/kg to get the total dose in milligrams: 30 x 0.55 = 16.5 mg.
Finally, divide the total dose by the concentration of the injection solution to get the volume in milliliters: 16.5 / 25 = 0.66 ml.
The nurse should administer 0.7 ml of chlorpromazine IM to the child.
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Related Questions
Correct Answer is ["125"]
Explanation
To calculate the infusion rate for lactated Ringer's solution, the nurse should divide the total volume of fluid by the total time of infusion.
In this case, the nurse should divide 500 mL by 4 hr, which equals 125 mL/hr.
Therefore, the nurse should set the IV pump to deliver 125 mL/hr of lactated Ringer's solution.
Correct Answer is ["38"]
Explanation
To calculate the IV flow rate in gtt/min, the nurse needs to use the following formula: IV flow rate (gtt/min) = Volume (mL) x Drop factor (gtt/mL) / Time (min).
In this case, the volume is 150 mL, the drop factor is 15 gtt/mL, and the time is 60 min.
Plugging these values into the formula, we get: IV flow rate (gtt/min) = 150 x 15 / 60.
Simplifying, we get: IV flow rate (gtt/min) = 37.5.
Therefore, the nurse should set the IV flow rate to deliver 38 gtt/min.
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