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2020 04




Suture-method versus Through-the-needle Catheters for Continuous Popliteal-sciatic Nerve Blocks: A Randomized Clinical Trial.


Finneran JJ, Swisher MW, Gabriel RA, Said ET, Abanobi MU, Abramson WB, Dalstrom DJ, Schwartz AK, Kent WT, Yang D, Mascha EJ, Ilfeld BM
Anesthesiology. 2020 04; 132(4):854-866.
PMID: 31996555.


The fundamental design of perineural catheters has changed little since they were first introduced WHAT THIS ARTICLE TELLS US THAT IS NEW: A novel catheter attached to the back of a suture-shaped needle can be inserted under ultrasound guidance to provide popliteal-sciatic nerve blockadeIn the first two days after foot and ankle surgery, analgesia provided using the suture-type catheters was found to be noninferior to that provided by conventional through-the-needle catheters BACKGROUND:: The basic perineural catheter design has changed minimally since inception, with the catheter introduced through or over a straight needle. The U.S. Food and Drug Administration recently cleared a novel perineural catheter design comprising a catheter attached to the back of a suture-shaped needle that is inserted, advanced along the arc of its curvature pulling the catheter past the target nerve, and then exited through the skin in a second location. The authors hypothesized that analgesia would be noninferior using the new versus traditional catheter design in the first two days after painful foot/ankle surgery with a primary outcome of average pain measured with the Numeric Rating Scale.