A nurse is preparing to administer a loading dose of phenytoin 10 mg/kg by IV bolus to a client who weighs 154 lb. Available is phenytoin50 mg/mL. How many mL should the nurse administer?
(Round the answer to the nearest whole number. Use a leading zero if it applies t use a trailing zero.)
The Correct Answer is ["14"]
To answer this question, the nurse needs to perform the following steps:
Convert the client's weight from pounds to kilograms by dividing it by 2.2. 154 lb / 2.2 = 70 kg.
Multiply the client's weight by the loading dose of phenytoin to get the total dose in milligrams. 70 kg x 10 mg/kg = 700 mg.
Divide the total dose by the concentration of phenytoin to get the volume in milliliters. 700 mg / 50 mg/mL = 14 mL.
Round the volume to the nearest whole number. The nurse should administer 14 mL of phenytoin by IV bolus.
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Related Questions
Correct Answer is ["15"]
Explanation
To answer this question, we need to calculate the dose of esmolol in mcg/kg/min, then convert it to mg/hr, and then use the formula:
mL/hr = (dose in mg/hr) x (volume in mL) / (concentration in mg)
First, we convert the client's weight from pounds to kilograms:
110 lb x 1 kg / 2.2 lb = 50 kg
Next, we multiply the client's weight by the prescribed dose to get the dose in mcg/min: 50 kg x 50 mcg/kg/min = 2500 mcg/min
Then, we divide the dose in mcg/min by 1000 to get the dose in mg/min: 2500 mcg/min / 1000 = 2.5 mg/min
Finally, we multiply the dose in mg/min by 60 to get the dose in mg/hr: 2.5 mg/min x 60 = 150 mg/hr
Now, we can use the formula to find the infusion rate in mL/hr:
mL/hr = (150 mg/hr) x (250 mL) / (2500 mg)
mL/hr = 15
Therefore, the nurse should set the IV pump to deliver 15 mL/hr.
Correct Answer is ["0.4"]
Explanation
- To calculate the amount of morphine injection needed, use the formula: D/H x V = A, where D is the desired dose, H is the dose on hand, V is the volume on hand, and A is the amount to administer.
- Plug in the values from the question: 4 mg / 10 mg x 1 ml = 0.4 ml
- Round the answer to the nearest tenth: 0.4 ml
- The nurse should administer 0.4 ml of morphine injection.
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