Dopamine hydrochloride IV at 2 mcg/kg/minute is prescribed to promote renal perfusion for a client weighing 198 lbs. The pharmacy sends a pre-mixed bag of dopamine containing 400 mg in 250 mL dextrose 5% in water (DSW). An IV pump is available that provides a precision infusion rate to a tenth of a mL. The nurse should set the IV pump to deliver how many mL/hour? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

Answer and Explanation

The Correct Answer is ["6.8"]

Converting the weight to kg:
Client weight = 198 lbs 1 lb = 0.453592 kg

Client weight in kg = 198 lbs 0.453592 kg/lb = 90.7 kg
Calculating the desired dopamine infusion rate:
Dose = 2 mcg/kg/minute Client weight = 90.7 kg
Desired infusion rate = Dose Client weight = 2 mcg/kg/minute 90.7 kg = 181.4 mcg/minute

Determining the dopamine concentration in the bag:

Dopamine amount = 400 mg Bag volume = 250 mL
Dopamine concentration = Dopamine amount / Bag volume = 400 mg / 250 mL = 1.6 mg/mL
Convert mg/mL to mcg/mL: 1.6 mg/mL 1000 mcg/mg = 1600 mcg/mL

Calculating the rate in mL/minute:

Desired infusion rate = 181.4 mcg/minute Dopamine concentration = 1600 mcg/mL
Rate (mL/minute) = Desired infusion rate (mcg/minute) / Dopamine concentration (mcg/mL)
Rate = 181.4 mcg/minute / 1600 mcg/mL = 0.1134 mL/minute

Converting the rate to mL/hour:
Rate (mL/minute) = 0.1134 mL/minute Conversion factor: 60 minutes/hour
Rate (mL/hour) = 0.1134 mL/minute 60 minutes/hour = 6.8 mL/hour (round to nearest tenth)

Therefore, the nurse should set the IV pump to deliver approximately 6.8 mL/hour.

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Correct Answer is B

Explanation

A. Guide in moving the non-affected limb to override the sensation being experienced.
Encouraging movement of the non-affected limb may not effectively address phantom limb pain and could potentially exacerbate discomfort or distress.

B. Reassure that this can be a normal postsurgical sensation.
Phantom limb pain is a common phenomenon after amputation surgeries. Providing reassurance that this sensation is normal can help alleviate anxiety and provide comfort to the adolescent.

C. Affirm that a prosthetic with physical therapy will gradually improve the symptoms.
While a prosthetic limb and physical therapy can help in the long term, they may not immediately address the phantom limb pain experienced in the early postoperative period.

D. Explain that the sensations of tingling and pain are not real.
Invalidating the adolescent's experience of phantom limb pain by suggesting that the sensations are not real may worsen distress and anxiety. It's essential to acknowledge the client's experience and provide supportive care.

A. Phobia B. Obsession. C. Compulsion. D. Addiction.

Correct Answer is C

Explanation

A. Phobia.
A phobia is an irrational fear of a specific object, situation, or activity that leads to a desire to avoid it. The client's behavior is more characteristic of a compulsion rather than a phobia.

B. Obsession.
An obsession is an intrusive, unwanted thought, image, or urge that causes significant anxiety.
While the client's fear of contamination could be an obsession, the handwashing itself is a compulsion.

C. Compulsion.
This is the correct answer because a compulsion is a repetitive behavior or mental act that a person feels driven to perform in response to an obsession. The client's excessive handwashing ritual is a classic example of a compulsion.

D. Addiction.
Addiction involves a compulsive need for and use of a habit-forming substance or behavior, typically involving a sense of euphoria or pleasure, which is not applicable to the client's behavior.

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Naxlex Comprehensive Predictor Exams

The nurse is providing postoperative care for an adolescent who had an amputation of the left leg for osteosarcoma. The adolescent describes experiencing phantom limb pain. Which non pharmacological intervention should the nurse provide?

Correct Answer is B

Explanation

Correct Answer is C

Explanation

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