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The healthcare provider prescribes amrinone 55 mg via intravenous (IV) bolus to be given over 2 minutes. The available vial is labeled, "Amrinone 100 mg/25 mL." How many mL should the nurse administer per minute?
(Enter numerical value only. If rounding is required, round to the nearest hundredth.)
Answer and Explanation

The Correct Answer is ["6.88"]

To calculate the volume of amrinone solution, we need to use the formula:

Volume (mL) = Dose (mg) x Dilution factor (mL/mg)

The dilution factor is the ratio of the volume of the vial to the amount of amrinone in the vial. In this case, it is 25 mL / 100 mg.

Plugging in the given values, we get:

Volume (mL) = 55 mg x 25 mL / 100 mg

Simplifying, we get:

Volume (mL) = 13.75 mL

To calculate the rate of administration, we need to divide the volume by the time. In this case, it is 2 minutes.

Plugging in the given values, we get:

Rate (mL/min) = 13.75 mL / 2 min

Simplifying, we get:

Rate (mL/min) = 6.875 mL/min

Rounding to the nearest hundredth, we get:

Rate (mL/min) = 6.88 mL/min


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Related Questions

Correct Answer is ["7672.32"]

Explanation

To calculate the amount of heparin, we need to use the formula:

Amount (units) = Dose (units/kg) x Weight (kg)

First, we need to convert the weight from pounds to kilograms by multiplying by 0.454. In this case, 211.2 pounds is equivalent to 95.904 kg.

Plugging inthe given values, we get:

Amount (units) = 80 units/kg x 95.904 kg

Simplifying, we get:

Amount (units) = 7,672.32 units

Correct Answer is ["133"]

Explanation

To calculate the infusion rate, we need to use the formula:

Infusion rate (mL/h) = Dose (mcg/min) x Weight (kg) x Volume (mL) / Concentration (mcg)

First, we need to convert the weight from pounds to kilograms by multiplying by 0.454. In this case, 132 pounds is equivalent to 59.928 kg.

Plugging in the given values, we get:

Infusion rate (mL/h) = 2 mcg/min x 59.928 kg x 500 mL / 45000 mcg

Simplifying, we get:

Infusion rate (mL/h) = 132.84 mL/h

Rounding to the nearest whole number, we get:

Infusion rate (mL/h) = 133 mL/h

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