A nurse is preparing to administer lidocaine 7 mg/min via continuous IV infusion to a client who is pregnant and has a ventricular arrhythmia. Available is lidocaine 1 g in dextrose 5% in water 250 mL. The nurse should set the IV pump to deliver how many mL/hr? (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 ["105"]
To calculate the IV pump setting, we need to convert the dosage from mg/min to mg/hr, and then find out how many mL/hr this corresponds to, given the concentration of the solution. First, multiply the ordered dose by 60 minutes to convert to an hourly rate: 7 mg/min * 60 min/hr = 420 mg/hr. Next, since we have 1 g of lidocaine in 250 mL, we convert 1 g to mg, which is 1000 mg. Now, we have 1000 mg in 250 mL, so we need to find out how many mL are needed for 420 mg. Using a proportion, we have 1000 mg/250 mL = 420 mg/x mL. Solving for x gives us x = (420 mg * 250 mL) / 1000 mg, which equals 105 mL. Therefore, the nurse should set the IV pump to deliver 105 mL/hr.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["25"]
Explanation
To calculate the volume of propranolol solution the client should self-administer per dose, you would divide the total daily dose by the concentration of the solution. The prescription is for 200 mg daily, to be taken in equal doses every 12 hours, which means each dose should be 100 mg. With the solution concentration at 4 mg/mL, you would divide 100 mg by 4 mg/mL to find the volume needed for one dose. This calculation results in 25 mL per dose.
Correct Answer is ["150"]
Explanation
To calculate the infusion rate, you would divide the total volume of IV fluid (1,800 mL) by the number of hours over which it is to be infused (12 hr). This calculation gives you 150 mL/hr.
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