Question

Dr.George would like a total of 10ml of heparinized saline with a concentration dose of 10 units/ ml.you have a vial of heparin with a concentration of 100 units/ml,and injectable saline comes in a 10ml vial.how many ml of heparin and nss will you need to mix the heparinized saline as ordered?

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Darrell

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1. The ordered heparinized saline concentration is 10 units/ml.

2. The total volume needed is 10 ml.

3. Using a vial of heparin with a concentration of 100 units/ml, let \( x \) be the volume of heparin needed.

4. The equation for the concentration is:

\frac{100x}{10} = 10

5. Multiply both sides by 10:

100x = 100

6. Solve for \( x \):

x = 1 \, \text{ml}

7. The remaining volume will be saline (\( y \)):

y = 10 - x

8. Substitute \( x \):

y = 10 - 1

y = 9 \, \text{ml}

Therefore, to prepare the heparinized saline:

\text{Heparin volume} = 1 \, \text{ml}

\text{Saline volume} = 9 \, \text{ml}

2. The total volume needed is 10 ml.

3. Using a vial of heparin with a concentration of 100 units/ml, let \( x \) be the volume of heparin needed.

4. The equation for the concentration is:

5. Multiply both sides by 10:

6. Solve for \( x \):

7. The remaining volume will be saline (\( y \)):

8. Substitute \( x \):

Therefore, to prepare the heparinized saline:

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