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Calculate the following dosage using the ratio and proportion method. Round the answer to the nearest tenth. Order: Heparin 17,000 units sub-cut daily
Available: Heparin labeled 20,000 units per mL

A.

10ml

B.

0.5ml

C.

2.5 ml

D.

0.9 ml

Answer and Explanation

The Correct Answer is D

To solve this problem using the ratio and proportion method, we must set up a proportion with the ordered dose on one side and the available dose on the other. Then we cross-multiply and solve for the unknown quantity, which is the volume of heparin to be administered.

The proportion is:

17,000 units / x ml = 20,000 units / 1 ml Cross-multiplying gives:

17,000 * 1 = 20,000 * x

Solving for x gives:

x = 17,000 / 20,000

x = 0.85 ml

Therefore, the volume of heparin to be administered is 0.85 ml.

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Related Questions

Correct Answer is C

Explanation

To solve this problem, we need to find the infusion rate in ml/min by dividing the volume of the solution by the duration of the infusion. In this case, the infusion rate is:

100 ml / 60 min = 1.67 ml/min

Then, we need to multiply the infusion rate by the drop factor to find the flow rate in gtt/min. The drop factor is given as 10 gtt/ml. Therefore, the flow rate is:

1.67 ml/min * 10 gtt/ml = 16.7 gtt/min

However, since we cannot administer partial drops, we need to round the answer to the nearest whole number. The closest whole number to 16.7 gtt/min is 17 gtt/min, so we round up. Therefore, the flow rate in gtt/min is 17 gtt/min.

Correct Answer is A

Explanation

Step 1: Identify the total volume to be infused.

  • Total volume = 2,000 mL

Step 2: Identify the total time for infusion.

  • Total time = 24 hours

Step 3: Calculate the flow rate in mL/hr.

  • Flow rate = Total volume ÷ Total time
  • Flow rate = 2,000 mL ÷ 24 hours

Step 4: Perform the division.

  • 2,000 ÷ 24 = 83.3333…

Step 5: Round to the nearest whole number since the equipment is programmable in whole mL/hr.

  • Rounded flow rate = 83 mL/hr

So, the flow rate is 83 mL/hr.

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