The physician orders dopamine at 10 mcg/kg/min. The pharmacy provides dopamine 800mg in 250 ml of D5W. What is the hourly IV pump rate? The patient weighs 85 kilograms.
Order: Dopamine at 10 mcg/kg/min
Available: Dopamine 800 mg in 250 mL D5W
Patient weight: 85 kg
The Correct Answer is ["15.94"]
Convert the ordered dose to mcg/min:
- 10 mcg/kg/min × 85 kg = 850 mcg/min
Convert the available dose to mcg/mL:
- 800 mg = 800,000 mcg in 250 mL
Concentration = 800,000 mcg ÷ 250 mL
= 3200 mcg/mL
Calculate the infusion rate:
Infusion rate (mL/hour) = [Desired dose (mcg/min) ÷Concentration (mcg/mL)] ×60 min/hour
Infusion rate = (850 mcg/min ÷ 3200 mcg/mL) × 60 min/hour
= 15.94 mL/hour
The IV pump should be set to infuse at approximately 15.94 mL/hour to deliver the ordered dose of dopamine at 10 mcg/kg/min for a patient weighing 85 kg. This ensures the appropriate therapeutic effect.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Pulmonary crackles/rales: Left-sided heart failure leads to a buildup of fluid in the lungs, causing pulmonary congestion and crackles/rales on auscultation.
B. Weight gain: This is more commonly associated with right-sided heart failure due to fluid retention, though it can be seen in both types of heart failure.
C. Hepatomegaly: Hepatomegaly is typically associated with right-sided heart failure due to congestion in the systemic circulation.
D. Jugular vein distention: JVD is a sign of right-sided heart failure, as it indicates increased central venous pressure.
Correct Answer is C
Explanation
A. "To the best of your knowledge, are your immunizations up to date?" Immunization status is important but is not directly related to the symptoms of jaundice and increased abdominal girth.
B. "Have you ever worked in an occupation where you might have been exposed to toxins?" While toxin exposure could contribute to liver disease, it is less likely the immediate cause compared to alcohol consumption.
C. "How many alcoholic drinks do you typically consume in a week?" Alcohol consumption is a major risk factor for liver disease, which can lead to jaundice and ascites (increased abdominal girth).
D. "Has anyone in your family ever experienced symptoms similar to yours?" Family history is less relevant for acute symptoms of jaundice and abdominal girth, which are more likely related to lifestyle factors like alcohol use.
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