Calculate the amount to administer:_____________ (Round appropriately)
Ordered: Lanoxin 135 mcg IM now
On hand: Lanoxin 0.25 mg/mL
The Correct Answer is ["0.54"]
Desired dose = 135 mcg.
- Convert the desired dose from micrograms (mcg) to milligrams (mg) to match the available concentration's unit.
Since 1 mg = 1000 mcg,
Desired dose in mg = 135 mcg / 1000 mcg/mg
= 0.135 mg.
Available concentration = 0.25 mg/mL.
- Calculate the volume to administer.
Volume (mL) = Desired dose (mg) / Available concentration (mg/mL)
= 0.135 mg / 0.25 mg/mL
= 0.54 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. She did not perform all of the three medication checks: Safe medication administration requires performing three checks: when retrieving the medication, when preparing it, and immediately before administration. The technician only checked the medication once against the MAR, skipping two critical verification points.
B. She failed to verify the medication against the medication order: The MAR is a transcription of the medication order and is commonly used for verification. As long as the MAR is current and accurate, verifying against it satisfies the need to confirm the order.
C. She did not prepare the medication: Medications may be prepackaged by the pharmacy for specific patients. As long as the technician verifies the correct medication and dosage, she is not required to personally prepare it from raw stock.
D. She did not call the pharmacy to confirm the medication amount: There is no standard requirement to call the pharmacy unless there is a discrepancy or concern. If the medication is clearly labeled with the correct patient and dosage, further confirmation is unnecessary.
Correct Answer is ["0.4"]
Explanation
Calculation:
Ordered dose: 120 mcg
- Identify the medication concentration:
The label states the concentration is 300 mcg/mL.
- Calculate the volume to administer.
Volume (mL) = Desired Dose / Available Concentration
= 120 mcg / 300 mcg/mL
= 0.4 mL
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