A nurse is preparing to administer heparin 5.000 units subcutaneous every 12 hr to a client who is pregnant and has atrial fibrillation. Available is heparin solution for injection 7.500 units/mL. How many mL should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.67"]
Given:
Prescribed dose: 5,000 units of heparin
Available concentration: 7,500 units/mL
Steps to solve:
Determine the volume to be administered:
Set up a proportion to solve for the unknown volume (X):
7,500 units/mL = 5,000 units/X mL
Cross-multiplying gives us:
7,500 units x X mL = 5,000 units x 1 mL
Simplifying:
7,500X = 5,000
Solving for X:
X = 5,000 / 7,500 = 0.67 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.75"]
Explanation
Given:
Prescribed dose: 75 mg of enoxaparin
Available concentration: 100 mg/mL
Steps to solve:
Determine the volume to be administered:
Set up a proportion to solve for the unknown volume (X):
100 mg/mL = 75 mg/X mL
Cross-multiplying gives us:
100 mg x X mL = 75 mg x 1 mL
Simplifying:
100X = 75
Solving for X:
X = 75 / 100 = 0.75 mL
Correct Answer is ["1.3"]
Explanation
Given:
Prescribed dose: 2.5 mg of methadone per dose
Available concentration: 10 mg/5 mL
Steps to solve:
Determine the volume to be administered:
Set up a proportion to solve for the unknown volume (X):
10 mg/5 mL = 2.5 mg/X mL
Cross-multiplying gives us:
10 mg x X mL = 2.5 mg x 5 mL
Simplifying:
10X = 12.5
Solving for X:
X = 12.5 / 10 = 1.25 mL
Round off to the nearest tenth:
1.3 mL
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