A patient is to receive an IV drip of the following: Heparin...

A patient is to receive an IV drip of the following: Heparin & 4000 units Sodium Chloride Injection $(0.45 \%)$ & $500 \mathrm{~mL}$ a. How many milliliters per hour must be administered to achieve a rate of 100 units of sodium heparin per hour? b. If the IV set delivers 20 drops $/ \mathrm{mL}$, how many drops per minute should be administered?

A patient is to receive an IV drip of the following:
Heparin & 4000 units
Sodium Chloride Injection $(0.45 \%)$ & $500 \mathrm{~mL}$
a. How many milliliters per hour must be administered to achieve a rate of 100 units of sodium heparin per hour?
b. If the IV set delivers 20 drops $/ \mathrm{mL}$, how many drops per minute should be administered?

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Key Concepts

Solution Concentration

This concept involves understanding how much of a medication is present per unit volume of an IV solution. It requires calculating the concentration by using the total amount of the drug and the volume of the solution so that accurate dosing can be achieved during administration.

Infusion Rate Calculation

Infusion rate calculation is the process of determining how many milliliters per hour need to be delivered to achieve a specific dosing goal. It involves setting up a proportion using the concentration of the medication in the IV solution to ensure the patient receives the correct amount of drug per hour.

Unit Conversion

Unit conversion is a fundamental skill in medical calculations that involves converting measurements from one unit to another. In IV calculations, it is often necessary to convert between hours, minutes, milliliters, and drops to correctly administer the dosage.

Drop Factor Calculation

Drop factor calculation relates to converting the volume of fluid to the number of drops, based on the drop factor of the IV set. This concept is essential for situations where the infusion is delivered using gravity, requiring the practitioner to determine the correct number of drops per minute to maintain the prescribed flow rate.

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