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 D
Explanation
Choice A rationale
While pallor can indicate various health issues such as anemia or low blood flow, it is not the most crucial finding when planning to provide a complete bed bath to a bedfast client.
Choice B rationale
Right-sided paralysis could affect the client’s ability to assist with the bath and could require special care or positioning. However, it is not the most crucial finding in this context.
Choice C rationale
2+ pitting edema of the feet could indicate fluid overload or poor circulation, but it is not the most crucial finding when planning to provide a complete bed bath.
Choice D rationale
This is the correct answer. Orthopnea, or difficulty breathing while lying flat, is the most crucial finding in this context. If a client has orthopnea, they may need to be positioned in a way that allows them to breathe comfortably during the bath.
Correct Answer is A
Explanation
Choice A rationale
Initiating a hearing and vision screening program for first graders is an example of secondary prevention. Secondary prevention aims to identify and treat an illness or disease at an early stage, which is exactly what a screening program does.
Choice B rationale
Observing a person with type I diabetes mellitus self-administer a dose of insulin is not an example of secondary prevention. This is more related to disease management, which falls under tertiary prevention.
Choice C rationale
Preparing a presentation on how to prevent the spread of lice is an example of primary prevention, which aims to prevent disease or injury before it ever occurs.
Choice D rationale
Collaborating with a science teacher to prepare a health lesson could be seen as primary prevention if the lesson is about preventing disease, or tertiary prevention if it’s about managing existing conditions.
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