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 ["0.25"]
Explanation
Given:
Prescribed dose: 250 mcg of terbutaline
Available concentration: 1 mg/mL
Steps to solve:
Convert mg to mcg:
1 mg = 1000 mcg
1 mg/mL = 1000 mcg/mL
Determine the volume to be administered:
Set up a proportion to solve for the unknown volume (X):
1000 mcg/mL = 250 mcg/X mL
Cross-multiplying gives us:
1000 mcg x X mL = 250 mcg x 1 mL
Simplifying:
1000X = 250
Solving for X:
X = 250 / 1000 = 0.25 mL
Correct Answer is B
Explanation
A) Frequency: The frequency in this prescription is specified as "qhs" (every night at bedtime), which is a standard and appropriate frequency for this type of treatment. There is no issue with the frequency, as it aligns with common treatment regimens for vaginal infections.
B) Route: The prescribed route for clindamycin is vaginal, which is unusual for antibiotics, as they are typically given orally or intravenously. However, clindamycin can be used vaginally for the treatment of infections such as group B streptococcus during pregnancy. The nurse should clarify the route to ensure that this is the intended administration method, especially considering that clindamycin is more commonly prescribed for oral or IV use.
C) Dosage: The dosage of 5 g is appropriate for vaginal clindamycin treatment for group B streptococcus and falls within typical guidelines for this type of therapy. Clindamycin vaginal suppositories or creams are usually dosed in the range of 5 g, making the dosage correct.
D) Medication: Clindamycin is a suitable antibiotic for treating group B streptococcus infections, including when administered vaginally. It is frequently used for such purposes, especially in pregnant women, to prevent neonatal transmission during labor.
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