Which of the following correctly describes the relationship between milligrams and micrograms?
1 mg = 100 mcg
1 mcg=1,000 mg
1 mg = 1,000 mcg
1 mcg =100 mg
The Correct Answer is C
A. 1 mg = 100 mcg: One milligram equals 1,000 micrograms, not 100. Using 100 would underestimate the dose by tenfold, potentially leading to medication errors.
B. 1 mcg = 1,000 mg: One microgram is much smaller than a milligram; 1 mcg equals 0.001 mg. This option greatly overstates the amount, which could result in dangerous dosing errors.
C. 1 mg = 1,000 mcg: One milligram is equal to 1,000 micrograms. This is the correct conversion and is essential for accurate medication calculations, particularly for drugs that require very small doses.
D. 1 mcg = 100 mg: One microgram is far smaller than a milligram; this option reverses the relationship and exaggerates the amount, which is unsafe for clinical dosing.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Calculation:
Ordered Dose: 60 mg
Available Tablet Strength: 30 mg/tablet
- Calculate the number of tablets
Number of Tablets = Dose ÷ Tablet Strength
Number of Tablets = 60 ÷ 30
Number of Tablets = 2 tablets
Correct Answer is A
Explanation
A. It should be administered at the same time every day: Insulin glargine is a long-acting insulin that provides a steady basal level of insulin over 24 hours. Administering it at the same time each day helps maintain consistent blood glucose control and reduces the risk of hyperglycemia or hypoglycemia caused by fluctuating insulin levels.
B. It should be shaken vigorously before administration: Insulin glargine is a clear solution that should never be shaken, as vigorous shaking can cause air bubbles and compromise the insulin’s effectiveness. Gentle handling or rolling between hands is recommended to maintain proper dosing.
C. It must be mixed with short-acting insulin in the same syringe: Insulin glargine cannot be mixed with any other insulin in the same syringe because it can alter its pharmacokinetics, reducing its effectiveness and potentially causing unpredictable blood glucose changes. It must be administered separately from other insulins.
D. It should be administered intravenously for faster absorption: Insulin glargine is designed for subcutaneous administration only and provides a slow, steady release. IV administration is inappropriate and could result in severe hypoglycemia and loss of the intended basal insulin effect.
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