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.)
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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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is {"dropdown-group-1":"B","dropdown-group-2":"D","dropdown-group-3":"F"}
Explanation
A. being cold: Being cold is not directly related to the symptoms described in the scenario.
The client's symptoms include dizziness, headache, burning feeling on extremities, and redness on face and extremities, but there is no mention of feeling cold.
B. dyspnea: Dyspnea, or difficulty breathing, may occur as a result of an adverse reaction such as anaphylaxis or severe cardiovascular compromise. It is a concerning symptom that warrants immediate attention and intervention.
C. shaking: Shaking is not mentioned in the client's symptoms in the scenario. While it can be a sign of distress or discomfort, it is not directly related to the symptoms of dyspnea, nausea, and headache described.
D. nausea: Nausea is a common symptom associated with adverse reactions to medications, including allergic reactions or cardiovascular events. It can contribute to the client's overall discomfort and may indicate ongoing or worsening adverse effects.
E. blood pressure 116/68 mm Hg: The client's blood pressure of 116/68 mm Hg is not
indicative of ongoing adverse reactions. While the initial blood pressure reading was low (108/46 mm Hg), it is not included as part of the ongoing symptoms described.
F. headache: Headache can be a manifestation of various adverse reactions, including allergic reactions or changes in blood pressure. It is a symptom that should be monitored closely as it can indicate ongoing or worsening complications.
Correct Answer is D
Explanation
A. Administer aspirin to prevent further clot formation and platelet clumping. While aspirin may be indicated in the treatment of ischemic stroke, it is not the immediate priority. The client requires further assessment and diagnostic evaluation before initiating specific treatments.
B. Raise the head of the bed to 30 degrees keeping head and neck in neutral alignment.
Positioning the client is important for maintaining airway patency, but it is not the priority when assessing and managing acute stroke. Immediate interventions to address potential thrombolytic therapy take precedence.
C. Begin continuous observation for transient episodes of neurologic dysfunction. Continuous observation is important for monitoring the client's neurological status, but it is not the first action to take. The client requires urgent diagnostic imaging to confirm the diagnosis and
determine eligibility for thrombolytic therapy.
D. Start two large bore IV catheters and review inclusion criteria for IV fibrinolytic therapy. This is the priority action. IV access is crucial for administering medications and fluids, and reviewing the inclusion criteria for IV fibrinolytic therapy is essential to determine if the client meets the
criteria for this time-sensitive intervention.
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