FUDR Dose Calculation Worksheet
STEP ONE:
[Prescribed dose of FUDR] x [weight in kg] x [pump volume]
(usually .12 - .20 mg/kg)
(16, 30, or 50 ml)
Pump flow rate (0.1, 1.2 or 2.50 ml/day)
=
Total FUDR in mgs
STEP TWO:
Total FUDR in mgs
FUDR concentration (usually 100mg/ml)
=
(Total volume of FUDR in mls)
STEP THREE:
Prescribed dose of dexamethasone (20mg unless otherwise specified)
Concentration of dexamethasone (usually 4mg/ml or 5mg/ml)
=
(Total volume of Dex. In mls)
STEP FOUR:
1000 units heparin x pump volume (16, 30, or 50 ml)
Concentration of heparin available (must be 5000 units/ml or higher)
=
( Total volume of heparin in mls)
STEP FIVE:
FUDR (mls)
+
Total volume of
FUDR in mls
+
Dexameth (mls)
Total volume of
dexamethasone in mls
+
Heparin (mls)
=
Total drug vol
+
Total volume of
heparin in mls
=
Total Drug Volume
STEP SIX:
Pump volume
Pump volume
(16, 30, or 50 mls)
2/6/2016
–
–
Total drug vol
Total drug volume
=
=
Saline (mls)
Normal saline volume to QS
Calculation Examples
Patient weight: 64 kg
FUDR Dose: 0.14 mg/kg
Dexamethasone dose: 20 mg
Heparin concentration: 10,000 units/mL
Pump reservoir volume: 30mL
FUDR Concentration : 100 mg/mL
Concentration: 5 mg/mL
Pump flow rate:1.3mL/day
(.14 x64 x 30)  1.3 = 206.76 mg of FUDR total
206.76  100 mg/ml FUDR concentration = 2.06 ml total volume of FUDR
20 mg dexamethasone 5 mg/ml concentration = 4 ml total volume of dexamethasone
(1000 units heparin x 30 mL pump volume)  10,000 = 3 ml total volume of heparin
2.06 mL FUDR + 4 mL dexamethasone + 2 mL heparin = 8.06 total drug volume
30 mL pump reservoir size – 8.06 total drug volume = 21.94 mL of normal saline.
What would the calculation be for a patient who weighs 175 pounds with a 30 mL pump with a flow rate
of 1.3 mL/day with an ordered dose of .18 mg/kg of FUDR?
FUDR dose:
175  2.2 = 79.54 kg
.18 mg/kg x 79.54 kg = 14.31 mg FUDR/day
14.31 mg FUDR/day x 30 mL pump volume = 429.5 mg FUDR total
429.5 mg FUDR  1.3 ml/day (pump flow rate) = 330.39
330.39 100 mg/mL FUDR concentration = 3.30 ml total volume of FUDR
Heparin dose:
1000 units heparin x 30 mL pump volume = 30,000 units of heparin
30,000 units  5,000 units/mL heparin concentration = 6 mL total heparin volume
Dexamethasone dose:
20 mg dexamethasone  4 mg/mL concentration of dexamethasone = 5 ml total volume of dexamethasone
Final calculation:
3.30 mL total volume of FUDR + 6 mL total volume of heparin + 5 mL total volume of dexamethasone =
14.3 total volume of drug
Pump reservoir volume 30 mL – 14.3 total drug volume = 15.7 ml normal saline.
Great job!
2/6/2016