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An elderly patient has bad hip surgery and will be receiving heparin, 4000 units subcutaneously every 12 hours. The heparin is available in vials of 5000 units/mL. Calculate how much heparin the nurse will administer for this dose.
Answer and Explanation

The Correct Answer is ["0.8"]

To determine the correct volume to administer:

Volume to administer (mL) = Prescribed dose (units)/ Available concentration (units/mL)​

= 4000 units/ 5000 units/mL

= 0.8 mL


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Related Questions

Correct Answer is D

Explanation

A. Potassium chloride is used for hypokalemia.
B. Vitamin K is the antidote for warfarin, not heparin.
C. Vitamin E is not an antidote and can actually increase bleeding risk.
D. Protamine sulfate binds to heparin and neutralizes its anticoagulant effect.

Correct Answer is ["125"]

Explanation

Total volume of the IV solution: 500 mL

Total amount of potassium chloride to infuse: 40 mEq

Infusion rate of potassium chloride: 10 mEq/hr

First, we need to determine the total time the infusion will run based on the potassium chloride infusion rate:

Totalinfusiontime(hours)=Infusionrate(mEq/hr)TotalmEqtoinfuse​

Totalinfusiontime(hours)=10mEq/hr40mEq​=4hours

Now that we know the total volume (500 mL) needs to be infused over 4 hours, we can calculate the mL per hour:

IVpumprate(mL/hr)=Totalinfusiontime(hours)Totalvolume(mL)​

IVpumprate(mL/hr)=4hours500mL​=125mL/hr

Therefore, the nurse should set the IV pump to deliver 125 mL/hr.

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