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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?

A.

0.5 mL

B.

1 mL

C.

1.5 mL

D.

2 mL

Answer and Explanation

The Correct Answer is A

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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Related Questions

Correct Answer is D

Explanation

First, we need to calculate the total dose of esmolol required per minute: Total dose = Weight x Dose x 60 minutes

Total dose = 65 kg x 200 mcg/kg/min x 60 minutes Total dose = 780,000 mcg/min

Next, we need to convert the dose to milligrams (mg):

780,000 mcg/min = 780 mg/min

The concentration of the esmolol solution is 2,500 mg in 250 mL or 10 mg/mL. To deliver 780 mg/min at a concentration of 10 mg/mL, we need to infuse: Infusion rate = Total dose / Concentration

Infusion rate = 780 mg/min / 10 mg/mL Infusion rate = 78 mL/min

Rounding to the nearest whole number, the answer is D. 78 mL/hr.

Therefore, the nurse should calculate an infusion rate of 78 mL/hr to deliver the required dose of esmolol to the patient.

Correct Answer is C

Explanation

To calculate the rate per hour, divide the amount of magnesium sulfate to be administered by the concentration of magnesium sulfate in the IV bag:

6 grams ÷ 40 grams = 0.15

Then, multiply the result by the volume of the IV bag, which is usually 1000 mL: 0.15 x 1000 mL = 150 mL

This is the amount of fluid that contains 6 grams of magnesium sulfate. To administer this amount over 30 minutes, multiply by 2 to get the rate per hour:

150 mL x 2 = 300 mL/hr.

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