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 C
Explanation
A. Ask a family member to interpret what the client is trying to communicate: While family members can sometimes help, the nurse should directly facilitate communication with the client using appropriate tools.
B. Ask the physician to wean the client off the mechanical ventilator to allow the client to talk: Weaning off a ventilator should only be done based on medical stability, not solely for communication purposes.
C. Ask the client to write, use a picture board, or spell words with an alphabet board: These tools can help non-verbal clients on mechanical ventilation express themselves and reduce frustration.
D. Assure the client that everything will be all right and that he shouldn't become upset: This response is dismissive and does not address the client's need to communicate.
Correct Answer is D
Explanation
A. Administer a stat fluid challenge: This might temporarily improve cardiac output in tamponade, but it is not the primary intervention. The fluid challenge may be used as a temporary measure, but it does not address the underlying cause.
B. Place the patient in a prone position: This is incorrect and could worsen the patient's condition. The patient should be in a semi-recumbent position to decrease venous return and reduce pressure on the heart.
C. Draw a stat CBC: A CBC is not relevant to the immediate management of cardiac tamponade and does not address the urgent need to relieve the pressure on the heart.
D. Perform a stat pericardiocentesis: Pericardiocentesis is the definitive treatment for cardiac tamponade, as it removes the fluid from the pericardial space, relieving the pressure on the heart and allowing it to function properly.
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