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 ["A","B","C","D","E"]

Explanation

- A) Knowing the medications the patient takes is crucial for understanding her medical history and any potential interactions with treatments that may be administered.

- B) Understanding the events leading up to the fall can help in assessing the cause and potential injuries sustained, which is important for her current and future treatment plans.

- C) Information about the last meal is important for anesthesia considerations, in case surgery is required, and for understanding the patient's nutritional status.
- D) Knowing if the patient is pregnant is vital as it influences the management of her care and the urgency of certain tests, as well as the avoidance of potential harm to the fetus.
- E) Information about cohabitants can be useful for social support and may also provide additional information about the circumstances leading to the injury.
- F) While insurance status is a practical consideration, it is not clinically relevant to the secondary survey and immediate care of the patient. Therefore, it is not an appropriate question at this stage.

A. The client may be developing sepsis. B. The client may be dehydrated. C. The client may have increasing symptoms of head injury. D. The client may have been sleeping. E. The client may be improving clinically. F. The client may require more morphine G. The client may be experiencing sedative effects of morphine.

Correct Answer is ["C","D","G"]

Explanation

A. The client may be developing sepsis.

Sepsis typically presents with symptoms such as fever, increased heart rate, increased respiratory rate, and altered blood pressure. There is no indication of these signs in the provided data,
making sepsis an unlikely cause for the change in the Glasgow Coma Scale (GCS) score.

B. The client may be dehydrated.

Dehydration can affect cognitive function, but there is no evidence suggesting dehydration in this scenario (e.g., normal heart rate, blood pressure, and no noted intake/output imbalance).
C. The client may have increasing symptoms of head injury.

A decrease in GCS score can indicate worsening head injury symptoms, such as increased intracranial pressure or bleeding.
D. The client may have been sleeping.

Sleeping can temporarily affect the GCS score, particularly the eye-opening component.

E. The client may be improving clinically.

Improvement clinically would likely result in a stable or improved GCS score, not a decrease.

F. The client may require more morphine.

Needing more morphine would typically be due to increased pain, but this should not directly affect the GCS score unless severe pain is causing altered consciousness, which is not indicated here.
G. The client may be experiencing sedative effects of morphine.

Morphine, especially given intravenously, can cause sedation, which could lower the GCS score.

H. The client may need food.

Needing food would not typically cause an immediate change in GCS score unless associated with severe hypoglycemia, which is not indicated by the provided data.

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Naxlex Comprehensive Predictor Exams

Exhibits Following the fluid bolus, the client is more awake and able to answer questions. What questions are appropriate for the secondary survey? Select all that apply.

Correct Answer is ["A","B","C","D","E"]

Explanation

Exhibits Which may have caused the change in the Glasgow Coma Scale score between 2000 and 2400? Select all that apply.

Correct Answer is ["C","D","G"]

Explanation

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Exhibits The nurse should place the client in a position to promote

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