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A nurse is preparing to administer dopamine 5 mcg/kg/min by continuous IV infusion to a client who weighs 220 lb. Available is 400 mg of dopamine in 250 mL of 0.9% sodium chloride. The nurse should set the IV pump to deliver how many mi/hr? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Answer and Explanation

The Correct Answer is ["18.8"]

To calculate the rate at which the IV pump should deliver dopamine, we can follow these steps:

Step 1: Convert the weight of the client from pounds to kilograms.

220 lb ÷ 2.2 = 100 kg (rounded to the nearest whole number)

Step 2: Calculate the total dose of dopamine per minute.

5 mcg/kg/min × 100 kg = 500 mcg/min

Step 3: Convert the dose from micrograms (mcg) to milligrams (mg).

500 mcg/min ÷ 1000 = 0.5 mg/min

Step 4: Determine the infusion rate in milliliters per hour (mL/hr).

The total volume of the solution is 250 mL.

The total dose of dopamine is 400 mg.

So, the infusion rate is (0.5 mg/min ÷ 400 mg) × 250 mL = 0.3125 mL/min.

Step 5: Convert the infusion rate from mL/min to mL/hr.

0.3125 mL/min × 60 min/hr = 18.75 mL/hr (rounded to the nearest tenth).

Therefore, the nurse should set the IV pump to deliver 18.8 mL/hr (rounded to the nearest tenth).


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Related Questions

Correct Answer is ["0.8"]

Explanation

To calculate the amount of morphine to administer, we can use the following formula:

Amount of medication (mL) = Desired dose (mg) / Concentration (mg/mL)

In this case, the desired dose is 8 mg and the concentration is 10 mg/mL.

Amount of medication (mL) = 8 mg / 10 mg/mL

Amount of medication (mL) = 0.8 mL

Therefore, the nurse should administer 0.8 mL of morphine.

Correct Answer is D

Explanation

Furosemide, a loop diuretic, is known to cause orthostatic hypotension as an adverse effect. It works by increasing urine output and reducing fluid volume, which can lead to a decrease in blood pressure when standing up, causing dizziness or lightheadedness.

Dabigatran (A) is an anticoagulant used to prevent blood clots and does not typically cause orthostatic hypotension as a side effect.

Levothyroxine (B) is a thyroid hormone replacement medication used to treat hypothyroidism. It does not usually cause orthostatic hypotension.

Isoproterenol (C) is a non-selective beta-adrenergic agonist that is primarily used for cardiac stimulation. It can cause tachycardia and palpitations, but orthostatic hypotension is not a common side effect.

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