2008, Number 4
Comparison of two local anesthetics in analgesic sciatic and femoral blockade trough neurostimulation
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ABSTRACTIntroduction: The peripheral nerve blockade produces high analgesic quality in knee surgery. Local anesthetics are used upon the base of its effectiveness and toxicity, so we decided to evaluate the postoperative analgesia through the comparison of ropivacaine (R) against bupivacaine (B) for femoral and sciatic blockade in the arthroscopic reconstruction of the anterior crossed ligament (ALC) repair. Methods: Study of cohort, randomized and comparative. There were studied patients submitted to ALC. Surgery being divided in two groups: R and B. Blockade was applied femoral and sciatic postoperative, the anesthetic place use in concentration of 0.25%, total volume of 40 mL for every nerve. VAS was evaluated at 6, 12, 18, 24 hours at rest and movement, analgesia time (ADT) and motor blockade time (MBT). Result: There were no differences in the demographic variables. The VAS, at rest and movement, was similar for both groups until 18 hours, when it significantly differed for the group R. The ADT was major in ropivacaine as well as the MBT was major with bupivacaine. Conclusions: Though both anesthetic places granted adapted analgesic; ropivacaine is the most effective local anesthetic for the blockade of femoral and sciatic nerves.
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