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A nurse is preparing to administer 0/9% sodium chloride (0.9% NaCl) 20ml/kg IV tp infuse over 6 hr to a school-age child who weighs 55 lbs. The nurse should set the IV pump to deliver how many ml/hr? (Round to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

8 mL/hr

8.3 mL/hr

83.3 mL/hr

83 mL/hr

Answer and Explanation

The Correct Answer is D

Ordered dose of 0.9% Sodium Chloride: 20 mL/kg

Child's weight: 55 lbs

Infusion time: 6 hours

Step 1: Convert child's weight from pounds to kilograms:

1 pound (lb) = 0.453592 kilograms (kg)

Child's weight in kg = 55 lbs x 0.453592 kg/lb = 24.94756 kg

Step 2: Calculate the total volume of 0.9% Sodium Chloride:

Total volume (mL) = Ordered dose (mL/kg) x Child's weight (kg)

Total volume (mL) = 20 mL/kg x 24.94756 kg

Total volume (mL) = 498.9512 mL

Step 3: Calculate the infusion rate in mL/hr:

Infusion rate (mL/hr) = Total volume (mL) / Infusion time (hr)

Infusion rate (mL/hr) = 498.9512 mL / 6 hr

Infusion rate (mL/hr) = 83.15853333 mL/hr

Step 4: Round to the nearest whole number:

Infusion rate (mL/hr) ≈ 83 mL/hr

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Correct Answer is A

Explanation

A) Ampicillin 500 mg
This is correctly written using metric abbreviations and follows standard rules for medication dosage. In the metric system, the drug name is followed by the dose, with the unit of measurement ("mg" for milligrams) written in lowercase. The correct usage of the unit abbreviation "mg" and proper spacing between the medication and the dose makes this option correct. Additionally, no trailing zeros are used, which is important for avoiding confusion in clinical settings.

B) ampicillin mg 500
This is incorrect because the unit of measurement ("mg") should follow the dose, not precede it. The correct format places the drug name first, followed by the numerical dose, and then the unit of measurement (in this case, "mg"). The unit abbreviation should be lowercase and placed after the dose. This structure is standard in pharmaceutical and medical documentation.

C) ampicillin 500 MG
While this provides the correct drug name and dosage, the unit abbreviation "MG" is written in uppercase, which is incorrect according to standard guidelines. Unit abbreviations should be written in lowercase letters unless they are the first word in a sentence. Writing "MG" in uppercase can lead to confusion and does not follow the convention for unit symbols.

D) ampicillin 500.0 mg
This is also incorrect because of the unnecessary trailing zero after the decimal point. In medication dosage, a trailing zero (e.g., 500.0 mg) is considered a potential error, as it can be misinterpreted. For example, a dosage of "500.0 mg" may be misread as a higher dose (e.g., 500 mg vs. 500.0 mg), and this could lead to medication errors. Standard practice is to avoid using trailing zeros unless they are required to prevent ambiguity (e.g., 0.5 mg).

A. 3 tabs B. 2 tabs C. 1 1/2 tabs D. 4 tabs

Correct Answer is B

Explanation

Calculate the dosage using the ratio and proportion:

Given:

Order: 200 mg p.o. t.i.d.

Available: Tegretol 100 mg chewable tablets.

Step 1: Set up the proportion

Availabledose(100mg) : 1tablet = Ordereddose(200mg) : xtablets

Step 2: Solve for 𝑥

100 mg : 1 tab = 200 mg : 𝑥 tabs

𝑥 = 200/100 = 2 tablets

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A nurse is preparing to administer 0/9% sodium chloride (0.9% NaCl) 20ml/kg IV tp infuse over 6 hr to a school-age child who weighs 55 lbs. The nurse should set the IV pump to deliver how many ml/hr? (Round to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Which of the following is stated correctly using metric abbreviations and rules?

Correct Answer is A

Explanation

Calculate the following dosage using ratio and proportions method. Round answers to the nearest tenth. Order: Tegretol 200 mg p.o.t.i.d. Available

Correct Answer is B

Explanation

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