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Slide 2 Nsg 232 Calculating IV Rate ml/hr
Calculating IV Rate ml/hr
Example 1 1gram of procainamide hydrochloride in dextrose 5% in
water is to be infused at a rate of 70 mcg/kg/minute. The IV has a total
volume of 500 ml. Your patient’s current weight is 48 lbs. At how
many ml/hr will you infuse the IV?
To find the ml/hr:
Step 1– Write down the patient’s weight and convert
Step 2 – Write down desired infusion dosage
Step 3 – Write down the given IV strength (amt/volume)
Step 4 – Convert as needed
Step 5 – Reduce the units
Step 6 – Perform the math
70 mcg/kg/minute.
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Slide 3,4,5 Solution to Example One
Calculating IV Rate ml/hr
Example 1 1gram of procainamide hydrochloride in dextrose 5% in
water is to be infused at a rate of 70 mcg/kg/minute. The IV has a total
volume of 500 ml. Your patient’s current weight is 48 lbs. At how
many ml/hr will you infuse the IV?
To find the ml/hr:
Step 1– Write down the patient’s weight and convert
Step 2 – Write down desired infusion dosage
Step 3 – Write down the given IV strength (amt/volume)
Step 4 – Convert as needed
Step 5 – Reduce the units
Step 6 – Perform the math
48 lbs
Step 1
1kg
2.2 lbs
21 .8 kg
48 x 1 kg x = =
1x 2.2 2.
48 kg
70 mcg/kg/minute.
Calculating IV Rate ml/hr
Example 1 1gram of procainamide hydrochloride in dextrose 5% in
water is to be infused at a rate of 70 mcg/kg/minute. The IV has a total
volume of 500 ml. Your patient’s current weight is 48 lbs. At how
many ml/hr will you infuse the IV?
To find the ml/hr:
Step 1– Write down the patient’s weight and convert
Step 2 – Write down desired infusion dosage
Step 3 – Write down the given IV strength (amt/volume)
Step 4 – Convert as needed
Step 5 – Reduce the units
Step 6 – Perform the math
Step 1 Step 2
60 min
1hour
x 70 mcg
1kg/min
Step 3
Step 5
Step 6
x =
21 .8 x 70 x500 x 60 ml
1x 1x 1x 1000000 hour
500 ml
1gram
x x
1gram
1 000000 mcg
21 .8 kg
Step 4
Calculating IV Rate ml/hr
Example 1 1gram of procainamide hydrochloride in dextrose 5% in
water is to be infused at a rate of 70 mcg/kg/minute. The IV has a total
volume of 500 ml. Your patient’s current weight is 48 lbs. At how
many ml/hr will you infuse the IV?
Step 6
= 21 .8 x 70 x500 x 60 ml
1x 1x 1x 1000000 hour
= 45780000 ml
1 000000 hr
=46 ml/hr
Round ml/hr to the nearest whole number.
Slide 7 Solution to Example 2
Calculating IV Rate ml/hr
Example 2 200 milligrams of vibramycin in dextrose 5% in water is to
be infused at a rate of 0.012 mg/kg/minute. The IV has a total volume
of 220 ml. Your patient’s current weight is 130lbs. At how many ml/hr
will you infuse the IV?
To find the ml/hr:
Step 1– Write down the patient’s weight and convert
Step 2 – Write down desired infusion dosage
Step 3 – Write down the given IV strength (amt/volume)
Step 4 – Convert to hours
Step 5 – Reduce the units
Step 6 – Perform the math
1 30 lbs
Step 1
x
1kg 59.1kg
2.2 lbs
1 30 kg
0.01 2 mg/kg/minute.
Slide 8
Calculating IV Rate ml/hr
Example 2 200 milligrams of vibramycin in dextrose 5% in water is to
be infused at a rate of 0.012 mg/kg/minute. The IV has a total volume
of 220 ml. Your patient’s current weight is 130lbs. At how many ml/hr
will you infuse the IV?
To find the ml/hr:
Step 1– Write down the patient’s weight and convert
Step 2 – Write down desired infusion dosage
Step 3 – Write down the given IV strength (amt/volume)
Step 4 – Convert as needed
Step 5 – Reduce the units
Step 6 – Perform the math
Step 1 Step 2
60 min
1hour
x
0.01 2 mg
1kg/min
Step 3
59.1kg
Step 4
Step 5
x =
59.1x 0.01 2 x 220 x 60 ml
1x 1 x 200 x 1hour
9361 .44 ml
200 hr
220 ml
200 mg
x
=47 ml/hr
Step 6
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