# Nursing Preparation Study Guide

Nursing Preparation Study Guide Therefore, the child that weights 18kg should receive 1.08 mL of Solumedrol. This is not the only way we can use the formula. Instead we can create a proportion out of this same formula. Although, you are not expected to derive this second formula on your exam the details are provided below. × = ⟹ × 1 = ⟹ = 1 Now cross multiply. (1) = ( ) ⟹ = Then divide each side by . = ⟹ = Next divide each side by . = ⟹ 1 = ⟹ × 1 = ⟹ = This allows us to use the same formula as a proportion rather than an algebraic formula. 5.3 Formula #2 – Proportions At the end of formula #1 you saw the ratio below was derived. = • = form and amount in which the drug comes (tablet, capsule, liquid) • = desired dose • = amount to give Now let’s do an example. Imagine that a doctor prescribes 1 g Tylenol supplements to be administrated rectally every 6 hours if the temperature goes above 101. The Tylenol supplements come in 325 mg (scored) tablets. How many supplements should you administer? • = dose on the container

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