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.)
4 mL/hr.
5 mL/hr.
6 mL/hr.
7 mL/hr.
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).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
The correct answer is Choice B: "When using implanted contraceptive methods, condoms should also be used to protect against STDs."
Choice B rationale: While implanted contraceptive methods are highly effective in preventing unintended pregnancies, they do not provide protection against sexually transmitted diseases (STDs). Therefore, using condoms in conjunction with implanted contraceptives can enhance overall sexual health by reducing the risk of contracting or transmitting STDs. This statement highlights the nurse's understanding of the importance of comprehensive sexual health practices and the limitations of various contraceptive methods.
Choice A rationale: The use of petroleum-based lubricants with condoms can actually compromise their effectiveness. Petroleum-based lubricants can degrade latex condoms, increasing the likelihood of condom breakage or slippage, which in turn raises the risk of both pregnancy and STD transmission.
Choice C rationale: Condoms are indeed effective in preventing pregnancy, but their effectiveness can be enhanced by using them in conjunction with vaginal spermicides. Spermicides containing nonoxynol-9 can provide additional protection by inactivating or killing sperm, thus reducing the risk of pregnancy.
Choice D rationale: Ensuring a proper fit is crucial for a condom's effectiveness, but the statement only emphasizes the condom fitting snugly over the tip of the penis. For optimal protection, a condom should be unrolled to cover the entire erect penis, leaving a small empty space at the tip for semen collection. A condom that is not unrolled completely may be more likely to slip off or break during intercourse.
Correct Answer is B
Explanation
The correct answer is choice B: Wear a surgical mask when within 0.9 m (3 feet) of the client.
Choice A rationale:
Fresh flowers are generally discouraged in hospital settings for clients with compromised immune systems due to the risk of infection from soil or water, which can harbor harmful microorganisms. However, this is not specifically related to rubella, which is an airborne virus.
Choice B rationale:
Rubella is transmitted through airborne droplets when an infected person coughs or sneezes. Wearing a surgical mask when close to the client can help prevent the spread of the virus. This is especially important to protect individuals who are pregnant or may become pregnant, as rubella can cause serious birth defects.
Choice C rationale:
Negative-airflow pressure rooms are used for clients with airborne infections, such as tuberculosis. While rubella is also airborne, the current guidelines do not require a negative pressure room for its management.
Choice D rationale:
While limiting visitors can help control the spread of infection, it is not the primary action to take for a client with rubella. The focus should be on preventing the spread through droplet transmission, which is addressed by wearing a mask and practicing good hand hygiene.
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