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 C
Explanation
Calculation:
Ordered Dose: 0.4 mg
Available Concentration: 1 mg/mL
- Calculate the volume to administer
Volume to administer = Ordered Dose ÷ Concentration
Volume to administer = 0.4 ÷ 1
Volume to administer = 0.4 mL
Correct Answer is B
Explanation
A. Administer antihistamines immediately: While antihistamines can help manage mild allergic reactions, they are not sufficient for severe or life-threatening anaphylaxis. Immediate discontinuation of the offending medication and emergency interventions are the priority.
B. Discontinue the medication immediately: Stopping the causative medication is the first and most critical action to prevent further exposure and worsening of the anaphylactic reaction. This action is essential to patient safety and must be done before other interventions.
C. Notify the health care provider after completing the medication administration: Waiting to notify the provider after completing administration would delay emergency treatment and put the patient at serious risk of harm.
D. Document the reaction in the patient's medical record: Documentation is important for ongoing care and future medication safety, but it is not the immediate priority during an active anaphylactic reaction.
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