A physician orders Garamycin (gentamicin) 4 mg/kg/dose IV piggyback every 12 hours for a newborn weighing 7 lb, 11.2 oz. After reconstitution, the dosage is 20 mg/10 mL.
How many milliliters should the nurse administer to the patient?

1.4 mL

14 mL

7 mL

0.7 mL

Answer and Explanation

The Correct Answer is C

To answer this question, the nurse needs to perform the following steps:

1) Convert the patient's weight from pounds and ounces to kilograms, using the conversion factor of 1 pound = 0.45359237 kilograms¹². To do this, first convert the ounces to a fraction of a pound by dividing by 16, then add this fraction to the pounds, and then multiply by the conversion factor. For example:

7 lb, 11.2 oz = 7 + (11.2 / 16) lb
= 7.7 lb
= 7.7 × 0.45359237 kg
= 3.492 kg

2) Calculate the dose of Garamycin in milligrams, using the prescribed dose of 4 mg/kg and the patient's weight in kilograms. To do this, simply multiply the dose per kilogram by the weight in kilograms. For example:

4 mg/kg × 3.492 kg = 13.968 mg

3) Calculate the volume of Garamycin in milliliters, using the reconstituted dosage of 20 mg/10 mL and the dose in milligrams. To do this, use a proportion to find the unknown volume that corresponds to the known dose. For example:

20 mg / 10 mL = 13.968 mg / x mL Cross-multiply and solve for x: 20x = 139.68

x = 6.984 mL
x =7 mL

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Correct Answer is D

Explanation

The safe dose of ertapenem for children is **15 mg/kg** twice daily, with a maximum dose of **500 mg** per dose. Therefore, the correct answer is **d) 15 mg/kg twice daily**. Ertapenem is a carbapenem antibiotic that is used to treat various infections caused by susceptible bacteria.

A. A depressed area around the injection sites indicates a positive reaction. B. After the insertion of the needle, a healthcare provider should aspirate for a blood return. C. The needle is inserted with the bevel of the needle upward at a 10- to 15-degree angle. D. The inner arm or upper back are the preferred sites.

Correct Answer is ["C","D"]

Explanation

These statements are correct because they follow the guidelines for intradermal injections, which are used for skin testing, such as for allergies or tuberculosis. Intradermal injections are given into the dermis, which is the layer of skin below the epidermis.
The needle is inserted with the bevel of the needle upward at a 10- to 15-degree angle to ensure that the medication is delivered into the dermis and not into the subcutaneous tissue or the epidermis. The bevel is

the slanted part of the needle tip that creates a sharp point. Inserting the needle with the bevel upward also reduces tissue trauma and bleeding.
The inner arm or upper back are the preferred sites for intradermal injections because they have thin skin and minimal hair, which makes it easier to see and measure any reactions. The inner arm is usually used for adults, while the upper back is used for children.
The other statements are not correct because they do not apply to intradermal injections or they contain false information.

a. A depressed area around the injection sites indicates a positive reaction. This statement is false because a depressed area, also known as induration, indicates a negative reaction. A positive reaction is indicated by a raised area, also known as a wheal, that is larger than a certain size depending on the type of test.

b. After the insertion of the needle, a healthcare provider should aspirate for a blood return. This statement does not apply to intradermal injections because aspiration is not necessary for this type of injection. Aspiration is the process of pulling back on the plunger of the syringe to check for blood in the needle before injecting the medication. This is done to avoid injecting into a blood vessel, which can cause adverse eﬀects or reduce the eﬀectiveness of the medication. However, intradermal injections are given into very superficial layers of skin where there are no blood vessels, so aspiration is not required.

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A physician orders Garamycin (gentamicin) 4 mg/kg/dose IV piggyback every 12 hours for a newborn weighing 7 lb, 11.2 oz. After reconstitution, the dosage is 20 mg/10 mL. How many milliliters should the nurse administer to the patient?

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Naxlex Comprehensive Predictor Exams

A primary healthcare provider has prescribed ertapenem to a 6-year-old child with a urinary tract infection (UTI). What is the safe dose of medication for this child?

Correct Answer is D

Explanation

A nurse is administering an intradermal injection to a patient. Which statements are correct? Select all that apply.

Correct Answer is ["C","D"]

Explanation

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A physician orders Garamycin (gentamicin) 4 mg/kg/dose IV piggyback every 12 hours for a newborn weighing 7 lb, 11.2 oz. After reconstitution, the dosage is 20 mg/10 mL.
How many milliliters should the nurse administer to the patient?