If an initial dose of Lidocaine is 1.5 mg/kg, what is the maintenance infusion rate?

The correct maintenance infusion rate for Lidocaine following an initial bolus dose is typically calculated to ensure effective therapeutic levels are maintained without exceeding safe limits. In this case, a common standard for maintaining infusion of Lidocaine after an initial loading dose of 1.5 mg/kg is around 3 mg/min, as it is designed to keep drug levels steady in the bloodstream.

This rate helps manage conditions like ventricular arrhythmias effectively by providing a sustained antiarrhythmic effect. The infusion is carefully regulated to maintain efficacy and minimize toxicity, ensuring patient safety.

While the other choices may reflect different rates, they do not align with the standard dosing protocols established for Lidocaine maintenance infusion, which is why they fall outside of the appropriate range.