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Korean J Anesthesiol > Volume 40(6); 2001 > Article
Korean Journal of Anesthesiology 2001;40(6):751-755.
DOI: https://doi.org/10.4097/kjae.2001.40.6.751   
Comparison of 0.075% Bupivacaine/Fentanyl and 0.125% Ropivacaine/Fentanyl Infusion for Postoperative Epidural Analgesia.
Eun Gyung Park, Jong Hak Kim, Hee Jung Baik
Department of Anesthesiology, College of Medicine, Ewha Womans University, Seoul, Korea.
Abstract
BACKGROUND
The new, long-acting local anesthetic ropivacaine is structurally very similar to bupivacaine, but the motor block is less profound and of shorter duration. The aim of this study was to compare analgesic effectiveness and side effects during postoperative pain control after a Caesarean section with either a bupivacaine/fentanyl or ropivacaine/fentanyl mixture.
METHODS
Thirty-nine patients undergoing a Caesarean section were randomized in a double-blinded manner to receive bupivacaine or ropivacaine. Postoperative epidural analgesia was provided using a PCA pump with either bupivacaine/fentanyl 0.075%/3.4 microgram/ml after 10 ml of 0.125% bupivacaine with morphine (n = 18) or ropivacaine/fentanyl 0.125%/3.4 microgram/ml after 10 ml of 0.2% ropivacaine with morphine (n = 21). Verbal rating pain scores (rest and cough), side effects (nausea, vomiting, pruritus, sedation, motor block and hypotention) and time to ambulation were measured for 48 hr after surgery.
RESULTS
There were no significant differences between the groups in verbal pain scores, sensory level, motor blockade and other side effects, but time to ambulation was earlier in the ropivacaine group.
CONCLUSIONS
0.125% ropivacaine with 3.4 microgram/ml fentanyl provided similar successful pain relief as 0.075% bupivacaine/fentanyl. However, earlier recovery of ambulation in patients receiving ropivacaine/ fentanyl will improve outcome after surgery.
Key Words: Anesthetic techniques: epidural; Anesthetics, local: bupivacaine; ropivacaine; Analgesia: measurement
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