Intermittent versus continuous sciatic block combined with femoral block for patients undergoing knee arthroplasty. A randomized controlled trial

International Orthopaedics
Stefan SoltészStephan Ziegeler

Abstract

Many institutions perform peripheral femoral and/or sciatic nerve blocks for analgesia after total knee arthroplasty. The aim of the present investigation was to compare the analgesic effect of an intermittent sciatic block (boluses on demand only) with a continuous infusion. One hundred and forty patients receiving a femoral and a sciatic nerve block (SNB) by catheter were assessed. The femoral catheter was infused continuously in both groups. In the continuous group (n = 70), the sciatic catheter was used continuously as well. In the intermittent group (n = 70), after a single injection of 20 ml ropivacaine 0.75 %, injections into the sciatic catheter were performed on demand only. Frequency of injections, ventral and dorsal numerical pain scores (NRSs) of the knee, functional outcome (degree of flexion/extension) and additional opioid requirements were assessed during the post-operative period. In both groups, dorsal and ventral NRSs were below 3 at rest and below 5 during mobilisation over the complete period of assessment. Differences between the groups could not be observed. The cumulative number of supplemental injections into the sciatic catheter was higher in the intermittent group (52) compared with the continuous gro...Continue Reading

References

Nov 26, 2008·The Journal of Arthroplasty·Kenneth J HuntE Marc Mariani
Dec 23, 2011·Regional Anesthesia and Pain Medicine·Faraj W Abdallah, Richard Brull
Jul 31, 2012·International Orthopaedics·Spencer S LiuThomas P Sculco
Aug 12, 2014·Current Opinion in Anaesthesiology·Martin C R BauerPeter K Zahn
Oct 10, 2014·International Orthopaedics·Stavros G MemtsoudisThomas P Sculco

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Citations

Oct 15, 2019·Frontiers in Psychology·Vanessa R SimmeringMaria Bolsinova

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