The nurse is to administer cefadroxil oral suspension 0.75 g PO every 12 hr. The pharmacy sends a cefadroxil oral suspension with a dosage strength of 250 mg/5 mL. The nurse sets up the following proportion:
250 mg: 5 mL :: 0.75 g: x mL
The nurse converts 0.75 g to mg, then solves the proportion. How much medication will the nurse give the patient?
15 mL
1.5 mL
2 mL
20 mL
The Correct Answer is A
Calculation:
- Convert the Ordered Dose from grams (g) to milligrams (mg).
Ordered Dose = 0.75 g
Conversion factor = 1 g = 1,000 mg
Ordered Dose (mg) = 0.75 g x 1,000 mg/g
= 750 mg
Dose Ordered (D) = 750 mg (the converted dose)
Dose Available (H) = 250 mg
Quantity (Q) = 5 mL
Volume (mL) = (Dose Ordered (D) / Dose Available (H)) x Quantity (Q)
= (750 mg / 250 mg) x 5 mL
= 3 x 5 mL
= 15 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Calculation:
- Calculate the volume in milliliters (mL) to administer.
Ordered Dose (D) = 10 mEq
Available Dose (H) = 20 mEq
Quantity (Q) = 15 mL
Volume (mL) = (Dose Ordered (D) / Dose Available (H)) x Quantity (Q)
= (10 mEq / 20 mEq) x 15 mL
= 0.5 x 15 mL
= 7.5 mL
- Convert the volume from milliliters (mL) to teaspoons (tsp).
Volume in mL = 7.5 mL
Conversion factor: 1 teaspoon (tsp) = 5 mL
Volume (tsp) = Volume in mL / Conversion factor
= 7.5 mL / 5 mL/tsp
= 1.5 teaspoons (or 1 1/2 teaspoons)
Correct Answer is D
Explanation
A. Document the medication before giving it: Documenting before administration risks recording a medication that may not actually be given, leading to errors and inaccurate medical records.
B. Document only if the patient refuses: Documentation is required for all administered medications, not just when a patient refuses, to ensure accurate tracking, legal compliance, and continuity of care.
C. Document the medication only if it caused side effects: Side effects must be documented, but documentation of the administration itself is always necessary, regardless of the patient’s reaction, to maintain an accurate record.
D. Document after the medication is administered: Recording the medication after administration ensures that the entry reflects an actual event, confirming that the patient received the correct drug, dose, route, and time. This practice aligns with safe and legal nursing standards.
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