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A client weighing 187 lb (85 kg) has an order to receive enoxaparin 1 mg/kg. This drug is available in a concentration of 30 mg/0.3 mL. What dose would the nurse administer in milliliters? Record your answer using two decimal places.

A. 1.70 mL
B. 2.00 mL
C. 2.30 mL
D. 2.60 mL

Answer :

Final answer:

To determine the dose of enoxaparin to administer, multiply the patient's weight by the dosage to find the total dose in mg, then calculate the volume in mL based on the drug's concentration. In this case, the nurse should administer 2.60 mL of enoxaparin.

Explanation:

The question involves the calculation of medication dosage in milliliters, based on the patient’s weight and the concentration of the medication available. To determine the dose of enoxaparin that the nurse should administer, we need to follow a few steps:

  1. Calculate the total dose in milligrams (mg) by multiplying the patient’s weight in kilograms (kg) by the dosage of 1 mg/kg.
  2. Determine how many milliliters (mL) correspond to the total dose using the medication concentration.

For a patient weighing 85 kg, the total dose required is 85 kg × 1 mg/kg = 85 mg. The medication concentration is 30 mg/0.3 mL, so we set up a proportion: (30 mg)/(0.3 mL) = (85 mg)/(x mL). By cross-multiplying and solving for x, we find that x = (85 mg × 0.3 mL)/(30 mg), which simplifies to x = 2.55 mL. The nearest selection that we have to 2.55 mL is 2.60 mL, which corresponds to option (d).

Hence, the nurse should administer 2.60 mL of enoxaparin.

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