Ati rn adult medical surgical 2023 proctored exam
Calculation
A nurse is preparing to administer lidocaine 2 mg/min by continuous IV infusion to a client. The amount available is lidocaine 400 mg in 100 mL of dextrose 5% in water. 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.)
mL/hr
Explanation & Rationale
Calculation: Determine the concentration of the available lidocaine solution in milligrams per milliliter (mg/mL). Available concentration = Total medication (mg) / Total volume (mL) = 400 mg / 100 mL = 4 mg/mL. Convert the desired dose from milligrams per minute (mg/min) to milligrams per hour (mg/hr). 1 hr = 60 min Desired dose in mg/hr = 2 mg/min × 60 min/hr = 120 mg/hr. Calculate the IV pump rate in milliliters per hour (mL/hr). IV pump rate (mL/hr) = Desired dose (mg/hr) / Available concentration (mg/mL) = 120 mg/hr / 4 mg/mL = 30 mL/hr.
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