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 B
Explanation
A. Respiratory acidosis: Respiratory acidosis would present with a low pH (below 7.35) and a high PaCO2 (above 45 mmHg).
B. Respiratory alkalosis: This ABG shows a high pH (7.51), low PaCO2 (32 mmHg), and normal HCO3- (26 mEq/L), indicating respiratory alkalosis, typically due to hyperventilation.
C. Metabolic acidosis: Metabolic acidosis would present with a low pH and low HCO3-, but in this case, the HCO3- is normal.
D. Metabolic alkalosis: Metabolic alkalosis would show a high pH and high HCO3-, but the HCO3- in this ABG is normal.
Correct Answer is D
Explanation
A. Grey-Turner Sign: Grey-Turner Sign refers to bruising along the flanks, often associated with retroperitoneal hemorrhage or acute pancreatitis.
B. Steatorrhea: Steatorrhea refers to fatty stools that are pale, bulky, and foul-smelling, indicating malabsorption, not a physical exam finding on the skin.
C. Asterixis: Asterixis, also known as "liver flap," is a tremor of the hand when the wrist is extended, seen in hepatic encephalopathy, not a skin finding.
D. Cullen's Sign: Cullen's Sign is bruising around the umbilicus, indicating intra-abdominal bleeding, often seen in conditions such as acute pancreatitis or ruptured ectopic pregnancy.
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