You are here
Home > Medical Calculator > Epidural recipes / calc

Common agents: bupivacaine, fentanyl, ropivacaine

Determine volume of epidural additives:
Volumes listed below assume a final volume of 250 ml.   If a volume other than 250ml is requested and any of the following additives are required (bupivacaine, fentanyl – alone or in combination), use our calculator

Using this chart:
Example order
:
Epidural:  0.125% bupivacaine with fentanyl concentration of 2 mcg/ml.
———————————————-
Using the table below, this would require 62.5 ml of bupivacaine and 10 ml of fentanyl for a total volume of 62.5 + 10 = 72.5ml.   Remove 72.5 ml from a 250 ml bag and then add the additives listed above for a total volume of 250 ml.

Bupivacaine 0.5% vials (preservative-free):
Desired concentration Volume needed
0.0625% 31.25 ml
0.075% 37.5 ml
0.1% 50 ml
0.125 % 62.5 ml
Bupivacaine 0.25% vials (preservative-free):
Desired concentration Volume needed
0.0625% 62.5 ml
0.075% 75 ml
0.1% 100 ml
0.125 % 125 ml
Ropivacaine 0.5% vials (preservative-free):
Desired concentration Volume needed
0.2% (preferred) 100ml
Ropivacaine 1.0% ampule (preservative-free):
Desired concentration Volume needed
0.2% (preferred) 50 ml
Fentanyl 50 mcg/ml  (preservative-free):
Desired concentration Volume needed
2 mcg/ml 10 ml
5 mcg/ml 25 ml
7.5 mcg/ml 37.5 ml
10 mcg/ml 50 ml
Hydromorphone 10 mg/ml  (preservative-free):
Look carefully at vial – many contain sodium metabisulfite which cannot be used.
Desired concentration Volume needed
25 mcg/ml 0.625 ml
50 mcg/ml 1.25 ml
75 mcg/ml 1.875 ml

Disclaimer

The authors make no claims of the accuracy of the information contained herein; and these suggested doses are not a substitute for clinical judgment. Neither GlobalRPh Inc. nor any other party involved in the preparation of this program shall be liable for any special, consequential, or exemplary damages resulting in whole or part from any user’s use of or reliance upon this material.PLEASE READ THE DISCLAIMER CAREFULLY BEFORE ACCESSING OR USING THIS SITE. BY ACCESSING OR USING THIS SITE, YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS SET FORTH IN THE DISCLAIMER. Read the disclaimer