# Nursing Preparation Study Guide

Nursing Preparation Study Guide If there are no “zeros” in the slots you can add them in. Now instead of 3.0 km we see 300000.0 cm If you are moving from a smaller unit to a larger unit the move the decimal to the left, for example, Hg is 5 units to the left of mg. So to convert 25 mg (or 25.0 mg) we move to the decimal to the left 5 units. Again if there are no “zeros” in the slots you can add them in. Now instead of 25 mg we have 0.00025 mg. 5.2. Formula #1 – Algebra When it comes to determining the amount of a medicine to give we can use the following formula: × = • = desired dose • = dose on container label • = form and amount in which drug comes (tablet, capsule, liquid) • = amount given to patient For example, Solumedrol 2.5 mg/kg is ordered for a child weighing 18 kg. Solumedrol is available as 125mg/3mL is available. Howmany mLmust the nurse administer? (Problem from DosageHelp.com) First, begin by identifying the information given. The desired dose is 2.5 mg/kg and the child weights 18 kg. This means that 2.5 × 18 = 45 mg should be administrated. The dose on the container is 125 mg, and the drug comes as a 3 mL liquid. Now, substitute these values into the formula and solve for the unknown. 45 mg 125 mg × 3 mL = 45 mg 125 mg × 3 mL 1 = 135(mg)(mL) 125(mg) = 1.08 mL

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