Regional anesthesia and postoperative analgesia for TKA is commonly provided by means of FNB combined with sciatic nerve block, but the technique takes longer than FNB alone. Femoral nerve block is safer than EA in patients taking anticoagulant therapy. perioperative EA can significantly reduce the total dose of fentanyl and ropivacaine by approximately half compared with FNB. Both EA and FNB proved to be suitable techniques with which to supplement total intravenous general anesthesia in a spontaneously breathing patient. Using the same infusion pump settings, EA was more effective than FNB for postoperative pain during movement on PODs 1 and 2. Most patients receiving FNB complained of pain in the distribution of the sciatic nerve.
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Last date updated on September, 2014