Calculating IV Solution Concentration

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# Calculating IV Solution Concentration - PowerPoint PPT Presentation

Calculating IV Solution Concentration. ProCalc Nsg 231. Calculating IV Solution Concentration. The concentration of a solution describes the mass of the solute (amount of drug) divided by the volume of solution. Calculating IV Solution Concentration.

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### Calculating IV Solution Concentration

ProCalc Nsg 231

Calculating IV Solution Concentration

• The concentration of a solution describes the mass of the solute (amount of drug) divided by the volume of solution.

Calculating IV Solution Concentration

• The concentration of a solution describes the mass of the solute (amount of drug) divided by the volume of solution.

400 mg

100 ml

400 mg

= 4 mg/ml

100 ml

Calculating IV Solution Concentration
• Example 1 You have an IV preparation of 500 milligrams of lidocaine HCL (Xylocaine) in 5% D/W. The final solution has a volume of 250 ml. You realize that the IV solution contains ____ mg of lidocaine HCL per ml.
• To find the mg/ml:
• Step 1 – Write down the amount of drug added as the numerator
• Step 2 – Write down the volume of the solution in the denominator
• Step 3 –Perform the math

Step 3

Step 1

500 mg

2 mg

ml

=

Step 2

250 ml

Calculating IV Solution Concentration
• Example 2 500 ml of IV fluid contains 0.02 mg of morphine sulfate per ml. The solution was prepared by adding morphine to dextrose 5% in water. How many mg of morphine are contained in the solution?
• To find the total milligrams in the solution:
• Step 1 – Write down the volume of the solution
• Step 2 – Write down the strength of the solution
• Step 3 - Reduce the units
• Step 4 –Perform the math

Step 1

Step 2

Step 4

0.02 mg

1 ml

500 ml

1

500 x 0.02 mg

=

100 mg

x

=

1 x 1

Step 3

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Calculating IV Solution Concentration