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Home > Medical Calculator > Epidural Conversions fentanyl and bupivacaine
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 Epidural Conversions Desired fentanyl concentration:   0 mcg/ml 2 mcg/ml 2.5 mcg/ml 5 mcg/ml 7.5 mcg/ml 10 mcg/ml Desired bupivacaine concentration (0.5% vials): 0.0625 % 0.075 % 0.1% 0.125% Final volume:  100ml 150 ml 250 ml 300 ml

## 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 above. 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
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