Hoffmann V L, Vercauteren M P, Vreugde J P, Hans G H, Coppejans H C, Adriaensen H A
Department of Anaesthesiology, University Hospital Antwerp, Edegem, Belgium.
Br J Anaesth. 1999 Nov;83(5):807-9. doi: 10.1093/bja/83.5.807.
We have compared skin to epidural space distance (SED) and tip to tip distance (TTD), a measure of posterior epidural space depth (PESD), in 40 patients with a 27-gauge Whitacre needle after identification of the epidural space using the hanging drop (HD) or loss of resistance (LOR) to air technique. After the LOR technique, TTD was found to be 2 mm greater than that after the HD technique, whereas SED was the same. We conclude that identification of the epidural space can be performed successfully with both techniques, but with a diminished risk of dural damage after LOR compared with the HD technique.
我们在40例患者中，使用27号Whitacre针，通过悬滴法（HD）或空气阻力消失法（LOR）确定硬膜外腔后，比较了皮肤至硬膜外腔距离（SED）以及针尖至针尖距离（TTD，一种测量硬膜后间隙深度（PESD）的方法）。采用LOR技术后，发现TTD比采用HD技术后大2毫米，而SED相同。我们得出结论，两种技术均可成功确定硬膜外腔，但与HD技术相比，LOR技术导致硬脊膜损伤的风险降低。
