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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Correct Answer is ["3"]
Explanation
To calculate the dose of calcitonin for a client who weighs 165 lb, the nurse needs to convert the weight to kilograms first.
One kilogram is equal to 2.2 lb, so the client's weight in kilograms is 165 / 2.2 = 75 kg.
The prescribed dose is 8 units/kg, so the total dose is 8 x 75 = 600 units.
The available concentration is 200 units/mL, so the volume to administer is 600 / 200 = 3 mL.
The nurse should administer 3 mL of calcitonin IM to the client.
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.
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