Dose of Local Anesthetics in Combined Spinal Epidural Anesthesia for Cesarean Section. |
Hae Ja Lim, Yoon Sook Lee, Hye Won Lee, Nan Sook Kim, Seong Ho Chang |
Department of Anesthesiology, Korea University Medical Colledge, Seoul, Korea. |
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Abstract |
BACKGROUND Combined spinal epidural (CSE) anesthesia has become the technique of anesthesia for cesarean section. We attempted to find the most suitable spinal and epidural local anesthetic doses providing high quality analgesia and minimal side effects during CSE anesthesia. METHODS Thirty nine parturients were divided into 3 groups by dose of local anesthetics. The dose of 0.5% hyperbaric bupivacaine for spinal anesthesia were 6mg (group 1), 4 mg (group 2) and 2 mg (group 3) and 2% lidocaine for epidural anesthesia were 100 mg (group 1), 200 mg (group 2) and 300 mg (group 3). RESULTS The number of request of analgesics during operation were 2 in group 1, 1 in group 2 and 3 in group 3.
Group 3 had higher incidence of hypotension than other groups. The time to T4 level block were faster in group 1 and 2 than group 3. CONCLUSIONS The CSE technique using 0.5% hyperbaric bupivacaine 4mg for subarachnoid and 2% lidocaine 200mg for epidural is most suitable for rapid onset, sufficient analgesia and few side effects in this study. |
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