Dosage calculations, until they stop being scary
Problems are generated fresh every time, so there is nothing to memorise and no way to run out. Write the units at every step. That single habit prevents most of the errors this section is designed to catch.
Weight-based dosage
Streak 0 · 0 attemptedDose calculated from the client's weight, usually in mg/kg or mcg/kg.
A client weighs 62 lb. The order is 0.5 mg/kg IV every 8 hours. What is the dose for one administration?
mg
Round to the nearest tenth.
Formula
Dose = Weight (kg) × Ordered dose per kg
Where marks get lost
Using a weight in pounds. Convert first: 1 kg = 2.2 lb. This is the single most common error on the exam.