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A nurse is preparing to administer dopamine hydrochloride 4 mcg/kg/min via continuous infusion.

Available is dopamine hydrochloride in a solution of 800 mg in a 250 mL bag.

The client weighs 80 kg. The nurse should set the IV infusion to deliver how many mL/hr? (Round the answer to the nearest whole number.

Use a leading zero if it applies.)

A.

4 mL/hr.

B.

5 mL/hr.

C.

6 mL/hr.

D.

7 mL/hr.

Answer and Explanation

The Correct Answer is C

Step 1: Convert the dopamine hydrochloride dose from mcg to mg. We know that 1 mg = 1000 mcg. So, 4 mcg = 0.004 mg.

Step 2: Calculate the total amount of dopamine hydrochloride the client needs per minute. We know that the client weighs 80 kg and the dose is 0.004 mg/kg/min. So, 0.004 mg/kg/min × 80 kg = 0.32 mg/min.

Step 3: Convert the total amount of dopamine hydrochloride the client needs per minute to an hourly rate. We know that 1 hour = 60 minutes. So, 0.32 mg/min × 60 min/hr = 19.2 mg/hr.

Step 4: Calculate the volume of the solution that contains 19.2 mg of dopamine hydrochloride. We know that the solution contains 800 mg in 250 mL. So, (19.2 mg ÷ 800 mg) × 250 mL = 6 mL.

Therefore, the nurse should set the IV infusion to deliver 6 mL/hr (rounded to the nearest whole number).

 


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Correct Answer is A

Explanation

Correct Answer is C

Explanation

Choice A rationale:

Sun protection is necessary when using self-tanning creams. These products do not provide protection against harmful UV rays. Failure to use sun protection measures, such as sunscreen and protective clothing, can lead to skin damage and increase the risk of skin cancer.

Choice B rationale:

The risk of injury from firearms does not necessarily decrease as children enter adolescence. Adolescents, like any other age group, should be educated about the dangers of firearms and the importance of firearm safety. Access to firearms should be restricted, and proper storage and education about safe handling are essential.

Choice C rationale:

Driving skills can be impaired when friends are present, especially for new and inexperienced drivers. Peer pressure and distractions from friends can lead to risky behaviors and impaired judgment, increasing the risk of accidents. It is crucial to educate adolescents about the importance of focused and responsible driving.

Choice D rationale:

Medroxyprogesterone is a hormonal contraceptive and does not provide protection against gonorrhea or other sexually transmitted infections (STIs). Safe sex practices, including the use of barrier methods such as condoms, are essential in preventing the transmission of STIs.

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