How Do You Calculate IV Drip Rates for Medications?

In summary, the patient weighs 70 kg and the prescription states a dosage of 0.5 mg/kg/hr. To calculate the rate in mL/hr for a bag of 250 mg in 50 mL, the equation 0.5/mg/kg/hr X 70kg is used, resulting in 35 mg/hr. By converting 250 mg to 50 ml, it is determined that the patient needs 35/250 * 50 mg/hr * ml/mg = 7 ml/hr. The correctness of this calculation is assured.
  • #1
acehansen
3
0

Homework Statement


Your patient weighs 70 kg the prescription states 0.5 mg/kg/hr. You have a bag of 250 mg in 50 mL. At what rate (mL/hr) will you set the pump?

Homework Equations


I don't think I have to convert the units of this equation, just cancel them out... but I'm not entirely sure.

The Attempt at a Solution


I tested it out, this is how i answered it
0.5/mg/kg/hr X 70kg = 35mg/hr

35 mg/hr X 50ml/250mg (I cancel out mg)
= 7ml/hr

I am not sure if I did this correctly.
 
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  • #2
How many milligrams per hour does the whole of the patient need ?
35 mg/hr is fine.
you know 250 mg is 50 ml, so 35 mg /hr is 35/250 * 50 mg/hr * ml/mg
You and patient can rest assured that this is correct.

Welcome to PF :) (though this is more like artihmetic, isn't it ?)
 
  • #3
BvU said:
How many milligrams per hour does the whole of the patient need ?
35 mg/hr is fine.
you know 250 mg is 50 ml, so 35 mg /hr is 35/250 * 50 mg/hr * ml/mg
You and patient can rest assured that this is correct.

Welcome to PF :) (though this is more like artihmetic, isn't it ?)

Thank You BvU. :)
 

Related to How Do You Calculate IV Drip Rates for Medications?

What is conversion of units?

Conversion of units is the process of changing one unit of measurement to another unit of measurement that measures the same quantity. This is important for accurately comparing or communicating measurements.

Why is it important to convert units?

It is important to convert units because different regions, industries, and systems may use different units of measurement. Converting units allows for consistency and accuracy in measurements.

What is the best way to convert units?

The best way to convert units is to use conversion factors. Conversion factors are ratios that relate two different units of measurement for the same quantity. By multiplying or dividing by the conversion factor, you can convert from one unit to another.

What are some common units of measurement?

Some common units of measurement include length (meters, feet), mass (kilograms, pounds), volume (liters, gallons), and time (seconds, minutes).

Can units be converted between different systems of measurement?

Yes, units can be converted between different systems of measurement. However, it is important to use conversion factors that specifically relate the units in the two systems. For example, to convert from pounds to kilograms, you would use the conversion factor 1 lb = 0.45359237 kg.

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