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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Related Questions
Correct Answer is ["125"]
Explanation
To calculate the infusion rate, the total volume of lactated Ringer's solution (500 mL) should be divided by the total time of infusion (4 hours). This results in an infusion rate of 125 mL/hr.
Correct Answer is ["120"]
Explanation
To convert grams to milligrams, you multiply the number of grams by 1,000. Therefore, to administer ferrous sulfate 0.12 g orally, you would give 120 mg, as 0.12 grams equals 120 milligrams. When rounding to the nearest whole number, it remains 120 mg.
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