Puncture Method Of Lumbar Puncture

Usually in a bent lateral position, intervertebral puncture is performed from lumbar 2 to sacral 1 (mainly from lumbar 3-4). After routine local disinfection and anesthesia, wear rubber gloves and slowly Pierce the needle along the spinous process with a 20-gauge puncture needle (21-22 for children). When the needle tip encounters bone during the process of needle entry, the needle should be retreated to the subcutaneous area to correct the Angle before puncture. When the needle is inserted about 4-6cm in adults (about 3-4cm in children), the dura can be penetrated to reach the subarachnoid space. The needle core can be withdrawn to drain the cerebrospinal fluid. After measuring pressure and slowly releasing fluid (no more than 2-3ml), the needle core can be inserted to pull out the puncture needle. The puncture point was slightly pressurized to stop bleeding, applied with sterile gauze and fixed with tape. Supine position for 4-6 hours after operation. If the initial pressure exceeds 2.94kPa(300mm water column), the fluid should not be discharged, and only the cerebrospinal fluid in the pressure measuring tube can be sent for cell counting and protein quantification.

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