A physician orders Dobutamine 10 mcg/kg/min for a patient. The patient is 110 lb.

How many milligrams per hour should the patient receive?

0.5 mg/hr

30 mg/hr

60 mg/hr

145 mg/hr

Answer and Explanation

The Correct Answer is B

To calculate the dose of dobutamine in mg/hr, we need to convert the patient's weight from pounds (lb) to kilograms (kg) and then use the ordered dose of 10 mcg/kg/min.

1 lb = 0.453592 kg (rounded to 6 decimal places) Patient's weight in kg = 110 lb x 0.453592 kg/lb

Patient's weight in kg = 49.89512 kg (rounded to 5 decimal places)

Now we can calculate the dose of dobutamine in mg/hr using the following formula:

Dose (in mg/hr) = Weight (in kg) x Dose (in mcg/kg/min) x 60 (to convert minutes to hours) / 1000 (to convert mcg to mg)

Dose (in mg/hr) = 49.89512 kg x 10 mcg/kg/min x 60 / 1000

Dose (in mg/hr) = 29.937072 mg/hr (rounded to 3 decimal places)

Therefore, the patient should receive a dose of approximately 29.9 mg/hr of dobutamine.

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Correct Answer is C

Explanation

The patient is ordered to receive 5 mg of Lopressor over 60 seconds, which is equivalent to 1 minute. The concentration of Lopressor is 1 mg/1 mL, which means there is 1 mg of Lopressor in 1 mL of solution. To calculate how many milliliters per minute the nurse should administer, we can use the following formula:

5 mg / 1 mg per 1 mL = X mL X = 5 mL per minute.

A. 0.5 mL B. 1 mL C. 1.5 mL D. 2 mL

Correct Answer is A

Explanation

To determine the mL per dose of heparin, we can use the following formula:

mL per dose = (total units needed) / (concentration of heparin in units/mL). Substituting the values given in the

Question :.

mL per dose = 10,000 units / 20,000 units/mL = 0.5 mL per dose.

Therefore, the client should receive 0.5 mL per dose of heparin from the vial containing a concentration of 20,000 units/mL.

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A physician orders Dobutamine 10 mcg/kg/min for a patient. The patient is 110 lb. How many milligrams per hour should the patient receive?

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Naxlex Comprehensive Predictor Exams

A patient is ordered 5 mg of IV Lopressor (metoprolol tartrate) to be administered over 60 seconds. The concentration is 1 mg/1 mL. How many milliliters per minute should the nurse administer to the patient?

Correct Answer is C

Explanation

A client is prescribed 10,000 units of heparin. How many mL per dose should be administered from a vial containing heparin, with a concentration of 20,000 units/mL?

Correct Answer is A

Explanation

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A physician orders Dobutamine 10 mcg/kg/min for a patient. The patient is 110 lb.

How many milligrams per hour should the patient receive?