Question

Cardizem 0.25 mg/kg IV bolus. Infuse over 2 minutes. Client weighs 50 kg. Available: Cardizem 25 mg (5 mg/mL). How many ml of the IV bolus is needed to infuse?

Answer 1

To calculate the volume of the IV bolus of Cardizem needed, multiply the dosage (0.25 mg/kg) by the patient's weight (50 kg) to get the total dose in mg, then divide by the concentration (5 mg/mL) to get the volume in mL. In this case, 2.5 mL is needed.

Step-by-step explanation:

To calculate the volume of Cardizem needed for the IV bolus, we first need to determine the total milligrams required for the patient based on their weight. Since the dose is 0.25 mg/kg and the patient weighs 50 kg, we multiply these two values to find the total dose in milligrams:

• Total dose = 0.25 mg/kg × 50 kg = 12.5 mg

Next, using the concentration of the Cardizem available (5 mg/mL), we will find out how many milliliters of Cardizem are needed by dividing the total dose by the concentration:

• Volume of IV bolus (mL) = Total dose (mg) / Concentration (mg/mL)
• Volume of IV bolus (mL) = 12.5 mg / 5 mg/mL = 2.5 mL

The nurse would need to prepare 2.5 mL of the IV bolus to infuse to the patient over 2 minutes.