Question

2.“Lucy”, a 12 year old 16 kg beagle needs a dose of the antibiotic cefazolin IV to treat her infected bite wound. The dose is 22 mg/kg IV. The concentration is 100 mg/ml. How many mgs of cefazolin will you give to “Lucy”? How many mls will you give to “Lucy”?

Answer 1

To determine the many mls will you give to “Lucy”:

Using a weight measurement by volume conversion

`\text{Volume(ml)}=\frac{\text{mass(kg) x dose(mg/ml)}}{density\text{ (mg/ml)}}`

Mass = 16kg

dose = 22mg/kg

density = 100mg/ml

How many mgs of cefazolin will you give to “Lucy

`\begin{gathered} \text{mass (mg) = 22 mg / kg x 16kg} \\ \text{mass (mg) = 352 mgs} \end{gathered}`

Hence the mass (mgs) of cefazolin given to lucy = 352 mgs

`\begin{gathered} \text{Volume (ml) = }\frac{\text{22 x 16 mg }}{100\text{ mg/ml}} \\ \text{Volume (ml) = }(88)/(25)ml \\ \text{Volume = 3.52 ml} \end{gathered}`

Hence the volume (mls) given to lucy = 3.52 ml