A nurse is preparing to administer digoxin 8mcg/kg/day PO to divide equally every 12hr for a preschooler who weighs 33lb. Available is digoxin elixir 0.05mg/mL. How many mL should the nurse administer per dose? Round off to the nearest tenth. Use a leading zero. Do not use a trailing zero.
The Correct Answer is ["1.2"]
Let's calculate the dosage step-by-step:
1. Convert pounds to kilograms:
33 lbs x 0.453592 kg/lb ≈ 14.97 kg
2. Calculate the total daily dosage:
8 mcg/kg/day x 14.97 kg ≈ 119.76 mcg/day
3. Calculate the dosage per dose (divided equally every 12 hours):
119.76 mcg/day / 2 doses ≈ 59.88 mcg/dose
4. Convert micrograms to milligrams:
59.88 mcg = 0.05988 mg
5. Calculate the volume needed from the elixir:
0.05988 mg / 0.05 mg/mL ≈ 1.2 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A) 0.20 mg: Although this representation of two-tenths of a milligram is correct, the trailing zero (the "0" after the decimal) is not typically necessary and can potentially lead to confusion. Standard practice generally omits trailing zeros to prevent errors in medication administration.
B) 2.0 mg: This represents two milligrams, not two-tenths of a milligram. The magnitude of the dose is significantly different from what is intended, making this option incorrect for representing two-tenths of a milligram.
C) .2 mg: This format lacks a leading zero before the decimal point, which can lead to misinterpretation or errors. The absence of the leading zero may cause confusion, especially in situations where decimal points are misread.
D) 0.2 mg: This is the most appropriate and clear way to write two-tenths of a milligram. It includes the leading zero before the decimal point, which helps to avoid confusion and accurately communicates the dose. This format adheres to standard practices for dosing precision and clarity.
Correct Answer is A
Explanation
A) 42 units: To calculate the total number of insulin units to prepare, add the units of regular insulin to the units of NPH insulin. The client requires 14 units of regular insulin and 28 units of NPH insulin. Adding these together yields a total of 42 units. This total reflects the sum of both types of insulin that need to be administered to meet the prescribed dosage.
B) 28 units: This option only accounts for the NPH insulin dose and does not include the regular insulin dose. To ensure the client receives the full prescribed dosage, both the regular insulin and the NPH insulin must be considered. Therefore, 28 units alone is not sufficient for the complete dosage required.
C) 14 units: This value represents only the amount of regular insulin required. It does not account for the additional 28 units of NPH insulin needed. The total preparation must include both the regular and NPH insulin, so 14 units alone does not meet the full prescription.
D) 32 units: This amount does not accurately reflect the total units required. It is neither the sum of the regular and NPH insulin doses nor any standard calculation derived from the prescribed doses. Thus, 32 units is incorrect for the total amount needed for the insulin syringe.
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