NCLEX-RNPharmacological and Parenteral TherapiesMedium
A client with deep vein thrombosis is prescribed enoxaparin 1 mg/kg subcutaneously every 12 hours. The client weighs 176 lbs. How many milligrams of enoxaparin should the nurse administer per dose?
- A80 mg
- B60 mg
- C100 mg
- D40 mg
Show answer & explanationAnswer & explanation
Correct answer: A. 80 mg
First, convert the client's weight from pounds to kilograms: 176 lbs / 2.2 lbs/kg = 80 kg. Then, calculate the dose: 1 mg/kg x 80 kg = 80 mg. The nurse should administer 80 mg of enoxaparin.
Why the other options are wrong
- B. This is an incorrect calculation for the given weight.
- C. This is an incorrect calculation for the given weight.
- D. This is an incorrect calculation for the given weight.
Weight-Based Dosage Calculation
Weight-based dosage calculations are critical for many medications, especially in client populations where precise dosing is essential (e.g., anticoagulants, pediatrics). It requires accurate conversion of client weight to kilograms and then multiplying by the prescribed dose per kilogram.
- Convert lbs to kg (1 kg = 2.2 lbs).
- Multiply kg by the mg/kg dose.
- Ensures precise, individualized dosing.
- Crucial for high-alert medications.
Memory trick: Pounds to kilos, then multiply for the dose!