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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.5"]
Explanation
To administer the correct dose of ketorolac, which is 15 mg, and given that the available ketorolac injection concentration is 30 mg/mL, the nurse should use the following calculation: Divide the ordered dose (15 mg) by the concentration of the available medication (30 mg/mL). This results in 0.5 mL.
Correct Answer is A
Explanation
A. Losartan is contraindicated in pregnancy due to its potential harmful effects on the fetus, and thus requires clarification with the provider in the postpartum period.
B. Ferrous fumarate is a standard supplement given postpartum to replenish iron stores and does not require clarification.
C. Prochlorperazine rectal suppositories are used PRN for nausea and do not typically require clarification unless there are specific concerns.
D. Docusate sodium is a stool softener commonly used postpartum and does not require clarification.
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