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The healthcare provider orders dobutamine at 12 mcg/kg/min. The client weighs 75 kg. The pharmacy provides 250 mL of D5W with 1 g of dobutamine. How many mL/hr should the IV pump be programmed for? (Round to a whole number.)

A.

13

B.

140

C.

14

D.

134

Answer and Explanation

The Correct Answer is C

A. This is an underestimation due to a miscalculation of the dose rate.

B. This is an overestimation due to a miscalculation of the dose rate.

C. 1. Calculate the desired dose of dobutamine:

Desired dose (mcg/min) = Dose per kg (mcg/kg/min) x Weight (kg)

Desired dose (mcg/min) = 12 mcg/kg/min x 75 kg = 900 mcg/min

2. Convert mcg/min to mg/hr:

900 mcg/min x 60 min/hr = 54,000 mcg/hr

54,000 mcg/hr ÷ 1000 mcg/mg = 54 mg/hr

3. Calculate the concentration of dobutamine in the solution:

Concentration (mg/mL) = Total amount of dobutamine (mg) / Total volume (mL)

Concentration (mg/mL) = 1000 mg (1 g) / 250 mL = 4 mg/mL

4. Calculate the infusion rate (mL/hr):

Infusion rate (mL/hr) = Desired dose (mg/hr) / Concentration (mg/mL)

Infusion rate (mL/hr) = 54 mg/hr / 4 mg/mL = 13.5 mL/hr

5. Round to the nearest whole number:

Infusion rate (mL/hr) = 14 mL/hr

Therefore, the IV pump should be programmed for 14 mL/hr.

D. This is an overestimation due to a miscalculation of the dose rate.


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Related Questions

Correct Answer is B

Explanation

A. Bleeding precautions are not required as the issue pertains to neutropenia, not thrombocytopenia.

B. Placing the client in a private room is appropriate as the ANC calculation (WBC × [% neutrophils]) indicates severe neutropenia, increasing the risk of infection.

C. Simply documenting findings does not address the client’s increased infection risk.

D. Blood cultures and antibiotics may be needed later but require additional signs of infection to proceed.

Correct Answer is A

Explanation

A. This statement indicates that the client may not fully understand the care required for the drainage tubes. Drainage tubes typically do not "fall out" on their own; they need to be removed by a healthcare provider. The client should be instructed to care for the tubes, monitor drainage, and report any concerns to their healthcare provider.

B. It is appropriate to measure the drainage each day and report it if it exceeds the expected amount. This helps ensure that the surgical site is healing properly.

C. The client should be cautious with the positioning of the drainage tubes to avoid kinking or pulling, which could interfere with drainage and cause complications.

D. A foul odor from the drainage could indicate an infection, so it is appropriate for the client to contact their primary healthcare provider if this occurs.

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