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 ["A","B","C","F"]
Explanation
Choice A rationale
Performing a thorough physical assessment is crucial when elder mistreatment is suspected. It helps to identify any signs of physical abuse or neglect.
Choice B rationale
Developing a safety plan is an important step in ensuring the safety of the elder. This plan can include strategies to avoid potential harm and steps to take if the elder feels unsafe.
Choice C rationale
Taking photographs to document the abuse or neglect can provide concrete evidence of the mistreatment. These photographs can be used in investigations and legal proceedings.
Choice F rationale
Completing a comprehensive history is necessary to understand the full context of the elder’s situation. This includes the elder’s health status, living conditions, and the nature of their relationship with the caregiver.
Choice H rationale
Reporting findings to Adult Protective Services is a critical step in addressing elder mistreatment. Adult Protective Services can conduct further investigations and take necessary actions to protect the elder.
Correct Answer is D
Explanation
Choice A rationale
Ceasing the use of the nasal cannula would interrupt the client’s oxygen therapy, which could potentially worsen their condition. Therefore, this is not the best course of action.
Choice B rationale
Reducing the flow rate to 1 L/minute may not be appropriate as the client’s oxygen needs may not be met at a lower flow rate. The redness under the chin is likely due to the friction from the cannula tubing, not the flow rate of the oxygen.
Choice C rationale
Applying lubricant to the cannula tubing may not be effective in preventing skin breakdown and could potentially cause additional discomfort or complications for the client.
Choice D rationale
Attaching padding around the cannula tubing can help reduce the friction between the tubing and the skin, which can help prevent skin breakdown. This is the most appropriate action to take in this situation.
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