A client weighing 198 lbs is prescribed Dopamine hydrochloride IV at 2 mcg/kg/minute to promote renal perfusion.
The pharmacy provides a pre-mixed bag of dopamine containing 400 mg in 250 mL dextrose 5% in water (D5W). An IV pump that provides a precision infusion rate to a tenth of a mL is available.
How many mL/hour should the IV pump be set to deliver? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["6.8"]
Step 1: Convert the client’s weight from lbs to kg. 1 kg is approximately 2.2 lbs. So, 198 lbs ÷
2.2 = 90 kg (rounded to the nearest whole number).
Step 2: Calculate the total mcg of Dopamine needed per minute. The prescription is for 2 mcg/kg/minute. So, 90 kg × 2 mcg/kg/minute = 180 mcg/minute.
Step 3: Convert the total mcg of Dopamine in the bag to mcg/mL. The bag contains 400 mg of Dopamine in 250 mL. 1 mg is equal to 1000 mcg. So, 400 mg × 1000 = 400,000 mcg. Therefore, the concentration is 400,000 mcg ÷ 250 mL = 1600 mcg/mL.
Step 4: Calculate the mL of Dopamine needed per minute. So, 180 mcg/minute ÷ 1600 mcg/mL
= 0.1125 mL/minute.
Step 5: Convert mL/minute to mL/hour. There are 60 minutes in an hour. So, 0.1125 mL/minute × 60 = 6.75 mL/hour. The IV pump should be set to deliver 6.8 mL/hour (rounded to the nearest tenth).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["60"]
Explanation
Step 1: We know that the medication is labeled as “750 mcg/2.4 mL”. This means that every 2.4 mL of the medication contains 750 mcg of teriparatide.
Step 2: We need to find out how many mL of the medication contains 60 mcg of teriparatide. We can set up a proportion to solve this: 750 mcg : 2.4 mL = 60 mcg : x mL Step 3: Solving for x gives us: x = (60 mcg * 2.4 mL) ÷ 750 mcg Step 4: Calculating the above expression gives us: x =
0.192 mL So, the nurse should administer 0.192 mL of the medication to deliver a dose of 60 mcg of teriparatide.
Correct Answer is ["A","B","C","D"]
Explanation
Choice A rationale
Administering IV fluids is a potential nursing intervention for several body systems. For example, the circulatory system may require IV fluids to maintain blood volume and pressure. The renal system may need IV fluids to ensure adequate urine output. The digestive system might need IV fluids to compensate for losses from vomiting or diarrhea.
Choice B rationale
Assessing a rash is a potential nursing intervention for the integumentary system. Rashes can be a sign of many different conditions, including allergic reactions, infections, autoimmune diseases, and more. By assessing the rash, the nurse can gather information to help determine its cause and appropriate treatment.
Choice C rationale
Administering an antihistamine is a potential nursing intervention for the immune system. Antihistamines are often used to treat allergic reactions, which involve the immune system.
They can also be used to treat symptoms of the common cold, which is caused by a viral infection.
Choice D rationale
Administering a steroid is a potential nursing intervention for several body systems. Steroids can be used to reduce inflammation, which can benefit the musculoskeletal, integumentary, respiratory, and other systems. They can also be used to treat certain endocrine disorders.
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