Heparin Calculations
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Feb 20, 2024
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Heparin Calculations
Name: Ngoc Boi Khuyen Nguyen Date: 3/29/21
Heparin is a powerful anticoagulant drug that inhibits new blood clot formation, or the extension of existing clots. Heparin is commonly mixed in IV solutions for administration, especially postoperatively to prevent clot formation from venous stasis.
Work the following heparin calculations:
1.
A rate of 20 mL/hr is required to infuse 80 units/hr from a solution strength of 60,000 units in 1 L D5W. Calculate the mL/hr flow rate. 1.33 mL/hr
80
units
1
hour
×
1000
ml
60000
units
=
1.33
ml
/
hr
2.
The order is for heparin 800 units/hr. The solution available is 40,000 units in 1000 mL D5W. Calculate the mL/hr flow rate. 20 mL/hr
800
units
1
hour
×
1000
ml
40000
units
=
20
ml
/
hr
3.
The order is to infuse heparin 1000 units/hr from a solution of 20,000 units in 500 mLD5W. Calculate the mL/hr flow rate. 25 mL/hr
1000
units
1
hour
×
500
ml
20000
units
=
25
ml
/
hr
4.
An IV of 1000 mL containing 40,000 units heparin running at 30 mL/hr. Calculate the units/hr infusing. 1200 u/hr
40000
units
1000
ml
×
30
ml
1
hour
=
1200
units
/
hr
5.
A solution of 1L of D5W with 20,000 units heparin is running at 80 mL/hr. Calculate the
units/hr infusing. 1600 u/hr
20000
units
1000
ml
×
80
ml
1
hour
=
1600
units
/
hr
6.
A 500 mL solution containing 10,000 units heparin running at 40 mL/hr is infusing 800 units/hr. 800 u/hr
10000
units
500
ml
×
40
ml
1
hour
=
800
units
/
hr
7.
The MD orders your patient to start an IV Heparin drip at 12 units/kg/hr and to administer a loading bolus dose of 60 units/kg IV before initiation of the drip. You’re supplied with a Heparin bag that reads 25,000 units/250 mL. The patient weighs 189 lbs. What is the flow rate you will set the IV pump at (mL/hr)? 10.32 mL/hr
189 lbs = 86 kg
86 kg x 12 units/kg/hour = 1032 units/hr
1032
units
1
hour
×
250
ml
25000
units
=
10.32
ml
/
hr
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