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 D
Explanation
A. Bruising of the skin is not typically associated with acute gastritis caused by contaminated water. While bruising may be a sign of other medical conditions or complications, it is not directly related to gastritis.
B. Low-grade fever can be a symptom of gastritis, especially if it is caused by an infectious agent. However, it is not typically a severe or emergent symptom that requires immediate reporting unless it is accompanied by other concerning symptoms.
C. Abdominal cramping is a common symptom of gastritis and may occur due to inflammation of the stomach lining. While it should be monitored, it is not as concerning as the potential complication indicated by option D.
D. Bloody emesis (vomiting blood) is a serious symptom that can indicate severe gastritis or complications such as gastrointestinal bleeding. It is essential to report this symptom promptly as it may require immediate medical attention and intervention.
Correct Answer is D
Explanation
A. Wearing gloves when interviewing the client. This behavior may make the client feel stigmatized or rejected, as it could imply that the nurse perceives them as contagious or untouchable.
B. Allowing the client to ventilate feelings. While this is important for emotional support, it does not directly address the psychosocial need for acceptance.
C. Encouraging the client to join a support group. This can help the client feel less isolated and gain support from others with similar experiences, but it is not as immediate or direct as personal interaction.
D. Shaking the client's hand during an introduction. This gesture of physical contact can significantly convey acceptance and normalcy, helping the client feel respected and accepted despite their condition.
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