Question

a nurse is caring for an infant who weighs 12 lb and is prescribed cefuroxime sodium 15mg/kg po every 12 hr. available is cefuroxime sodium oral solution 125mg/5ml. how many ml should the nurse administer per dose? (round the answer to the nearest tenth. use a leading zero if it applies. do not use a trailing zero.)

Explanation:

Step1: Convert the infant's weight from pounds to kilograms

Since \(1\ lb = 0.4536\ kg\), for a \(12\ lb\) infant, the weight in kilograms is \(12\times0.4536 = 5.4432\ kg\).

Step2: Calculate the dose in milligrams

The prescribed dose is \(15\ mg/kg\). So the dose \(D\) (in \(mg\)) is \(D=15\times5.4432 = 81.648\ mg\).

Step3: Use the formula \(V=\frac{D}{H}\times Q\)

Here, \(D = 81.648\ mg\) (desired dose), \(H = 125\ mg\) (dose on - hand per \(5\ mL\)), and \(Q = 5\ mL\).

$$V=\frac{81.648}{125}\times5=\frac{81.648\times5}{125}=\frac{408.24}{125}=3.26592\approx3.3\ mL$$

Answer:

\(3.3\)