Question

Your patient weighing 64 kg needs an infusion of heparin

starting at 50 units/kg/hour. You have heparin ampoules 25 000
units in 25 mL in stock. What rate will you set the infusion in
mL/hr?

Answer 1

To deliver a dosage of 50 units/kg/hour of heparin to a 64 kg patient using a stock solution of 25,000 units in 25 mL, the infusion rate should be set to 3.2 mL/hour.

Step-by-step explanation:

Calculating the Infusion Rate for Heparin

To calculate the infusion rate of heparin in mL/hr for a patient weighing 64 kg at a dosage of 50 units/kg/hour, we first find the total units required per hour by multiplying the patient's weight by the dosage:

64 kg × 50 units/kg/hour = 3200 units/hour

Knowing that we have a stock of heparin with a concentration of 25,000 units in 25 mL, we can now calculate how many mL of this solution are required to deliver 3200 units in one hour:

(3200 units) / (25,000 units/25 mL) = (3200/1000) mL = 3.2 mL/hour

Therefore, the infusion pump should be set to 3.2 mL/hour to deliver the correct dosage of heparin to the patient.

Answer 2

To calculate the infusion rate, multiply the patient's weight by the heparin dose to get the total units per hour, then divide by the concentration of the heparin stock solution to find the volume to infuse per hour. For a 64 kg patient at 50 units/kg/hour with heparin ampoules of 25,000 units in 25 mL, the rate would be set to 3.2 mL/hour.

Step-by-step explanation:

The infusion rate for a patient weighing 64 kg who needs a heparin dose starting at 50 units/kg/hour can be calculated using the information that the available heparin ampoules are 25,000 units in 25 mL. First, we find the total units of heparin needed for the patient by multiplying their weight by the dose per kilogram: 64 kg × 50 units/kg/hour = 3200 units/hour. Next, to find the volume of heparin required per hour, we use the concentration of the stock solution: 3200 units / (25,000 units / 25 mL) = 3.2 mL/hour. Therefore, the infusion pump should be set to 3.2 mL/hour.