Lower pain at 24-48hr with cACB versus ssACB plus PCA fentanyl in total knee arthroplasty .
The analgesic efficacy of the continuous adductor canal block compared to continuous intravenous fentanyl infusion with a single-shot adductor canal block in total knee arthroplasty: a randomized controlled trial
Korean J Pain. 2019 Jan;32(1):30-38. doi: 10.3344/kjp.2019.32.1.3044 patients scheduled for total knee arthroplasty were randomized to a postoperative analgesia regimen including either a continuous adductor canal block or a single-shot adductor canal block followed by patient-controlled analgesia with fentanyl. Primary purpose of this study was to determine if there were any significant differences between groups in pain scores, on a numeric rating scale, over the first 48 hours after surgery. Comparison of groups demonstrated significantly lower NRS pain scores at 4 hours, 24 hours, and 48 hours in the group treated with continuous adductor canal block compared to patients treated with single-shot adductor canal block followed by PCA fentanyl.
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