Med Math: Drips Question #1

Question

Order for heparin infusion to begin at 18 units/kg/hr. Client weight is 75 kg and heparin on hand consists of 25,000 units/500 mL. Calculate the starting rate of the infusion (mL/hr).

Answers

  1. 67 mL
    • Rationale:
  2. 50 mL
    • Rationale:
  3. 28 mL
    • Rationale:
  4. 27 mL
    • Rationale:

Overview

Explanation

Correct Response = Total units in IV/Total Vol = Units per hr/ x (ml/hr)

Calculate u/hr/kg = 18 u x 75 kg = 1350 units per hr then plug into equation 25,000 u/500 ml = 1350 u/ x mL/hr = 675,000/25,000 = 27 mL/hr (can reduce down as well)

DA calculation = mL/hr = 500 1 mL/25,000u 50 x 18 units/kg/hr x 75 kg/1 = 1350/50 = 27 mL

Learning Outcomes

Test Taking Tip

Video Rationale