Epidural needle procedure

Often take the side decubitus position, the back and the edge of the operating table flush, hands hold knees, spine bending as far as possible, so that the lumbar spinous process gap widened. To avoid spinal cord injury, the puncture site should be in the lumbar 3-4 or 4-5 gaps. The line between the two iliac cristae is through the fourth lumbar spinous process or the lumbar 3-4 gap, which serves as the positioning reference. Disinfection of skin, covering antiseptic wipes in the puncture point with 0.5 1% lidocaine infiltrating anesthesia, selection of fine lumbar puncture needle (22-26 g), in the middle of puncture, lumbar puncture needle should be parallel to the spine direction Pierce, needle point through the skin, subcutaneous, spines on the ligament, ligament, yellow ligament between spine and into epidural space, move forward again, Puncture the dura and arachnoid membrane and enter the subarachnoid space. Through the ligamentum flavum and the dura mater there is often a distinct sense of breakthrough. Local anesthetics can be administered if the needle core is removed and cerebrospinal fluid exits.

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