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Math  /  Numbers & Operations

QuestionThe order is for Cefazolin 450mg IV once daily. Supply and directions: Reconstitution with 10 mL of sterile water for 1 g/10 mL1 \mathrm{~g} / 10 \mathrm{~mL} of solution a) The nurse will reconstitute with \qquad mL(s)\mathrm{mL}(\mathrm{s}) of \qquad solution b) The final concentration is \qquad (include units of measure) c) The volume the nurse will administer is \qquad mL  Blank # 1 Blank # 2 Blank # 3 Blank # 4\begin{array}{l} \text { Blank \# } 1 \\ \text { Blank \# } 2 \\ \text { Blank \# } 3 \\ \text { Blank \# } 4 \end{array}

Studdy Solution

STEP 1

1. The order is for Cefazolin 450 mg 450 \, \text{mg} to be administered intravenously once daily.
2. The supply directions indicate reconstitution with 10 mL 10 \, \text{mL} of sterile water for 1 g 1 \, \text{g} (or 1000 mg 1000 \, \text{mg} ) of Cefazolin.
3. We need to determine the volume of sterile water for reconstitution, the final concentration of the solution, and the volume to be administered.

STEP 2

1. Calculate the volume of sterile water needed for reconstitution.
2. Determine the final concentration of the reconstituted solution.
3. Calculate the volume of the solution to administer.

STEP 3

Calculate the volume of sterile water needed for reconstitution.
Since the supply directions state 10 mL 10 \, \text{mL} of sterile water is used for 1 g 1 \, \text{g} (or 1000 mg 1000 \, \text{mg} ), the nurse will use:
Blank #1: 10 mL\text{Blank \#1: } 10 \, \text{mL}

STEP 4

Determine the final concentration of the reconstituted solution.
The concentration is given by the amount of drug per volume of solution. Since 1 g 1 \, \text{g} (or 1000 mg 1000 \, \text{mg} ) is reconstituted in 10 mL 10 \, \text{mL} , the concentration is:
1000 mg10 mL=100 mg/mL\frac{1000 \, \text{mg}}{10 \, \text{mL}} = 100 \, \text{mg/mL}
Blank #2: 100 mg/mL\text{Blank \#2: } 100 \, \text{mg/mL}

STEP 5

Calculate the volume of the solution to administer.
To find the volume that contains 450 mg 450 \, \text{mg} , use the concentration:
450 mg100 mg/mL=4.5 mL\frac{450 \, \text{mg}}{100 \, \text{mg/mL}} = 4.5 \, \text{mL}
Blank #3: 4.5 mL\text{Blank \#3: } 4.5 \, \text{mL}
The nurse will reconstitute with Blank #1: 10 mL \text{Blank \#1: } 10 \, \text{mL} of solution. The final concentration is Blank #2: 100 mg/mL \text{Blank \#2: } 100 \, \text{mg/mL} . The volume the nurse will administer is Blank #3: 4.5 mL \text{Blank \#3: } 4.5 \, \text{mL} .

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