A nurse is preparing to administer lidocaine 4mg/min by continuous IV infusion for a client. Available is lidocaine 8 mg/mL. Said the IV pump to deliver how many mL/hr?
To calculate the infusion rate in mL/hr, you can use the formula:
Infusion rate (mL/hr) = (Dose desired * Total volume) / Concentration
In this case, the desired dose is 4 mg/min, and the concentration is 8 mg/mL.
First, convert the dose to mg/hr:
4 mg/min * 60 min/hr = 240 mg/hr
Now, plug this and the concentration into the formula:
Infusion rate = (240 mg/hr * Total volume) / 8 mg/mL
To solve for the total volume, rearrange the formula:
Total volume = (Infusion rate * Concentration) / Dose desired
Total volume = (240 * 8) / 4
Total volume = 480 mL/hr
Therefore, the IV pump should deliver 480 mL/hr of lidocaine at a rate of 4 mg/min.