A nurse is preparing to administer enoxaparin 5 mg/kg subcutaneous daily to a client who has deep-vein thrombosis. The client weighs 152 lb. Available is 120 mg/0.8 mL prefilled syringe. Calculate the dosage in mL that the nurse should administer. (Round the answer to the nearest tenth. Use a leading zero if applicable. Do not use a trailing zero.)
The Correct Answer is ["2.3"]
1 lb = 0.453592 kg (conversion factor)
Weight in kilograms = 152 lb × 0.453592 kg/lb ≈ 68.946 kg
Calculate the total dosage based on the client's weight:
Total dosage = 5 mg/kg × 68.946 kg
≈ 344.73mg
Determine the volume of enoxaparin solution needed based on the concentration provided: Available concentration: 120 mg/0.8 mL
Dosage required: 344.73 mg Using the formula:
Volume (mL) = Dosage required (mg) / Concentration (mg/mL)
= 344.73mg / 120 mg/0.8 mL
= 2.3ml
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. When administering a TST, the nurse should select an injection site that is free of scar tissue and areas with excessive hair, veins, or visible lesions. The preferred site for TST administration is the volar aspect of the forearm, approximately 2-4 inches below the elbow.
B. After administering the TST, the nurse should not massage or manipulate the injection site. Massaging the site can cause irritation or spread the solution, leading to inaccurate results.
C. he TST is administered intradermally, typically with a 27-gauge needle. The needle should be inserted with the bevel facing upward at a 5-15-degree angle.
D. The standard dose of tuberculin solution (e.g., purified protein derivative, PPD) for a TST is 0.1 mL containing 5 tuberculin units (TU).

Correct Answer is ["2.3"]
Explanation
1 lb = 0.453592 kg (conversion factor)
Weight in kilograms = 152 lb × 0.453592 kg/lb ≈ 68.946 kg
Calculate the total dosage based on the client's weight:
Total dosage = 5 mg/kg × 68.946 kg
≈ 344.73mg
Determine the volume of enoxaparin solution needed based on the concentration provided: Available concentration: 120 mg/0.8 mL
Dosage required: 344.73mg Using the formula:
Volume (mL) = Dosage required (mg) / Concentration (mg/mL)
= 344.73mg / 120 mg/0.8 mL
= 2.3ml
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