How to do a waist piercing?

Usually take the bent back position, from the lumbar 2 to the sacral 1 (mainly lumbar 3-4) intervertebral space puncture. After routine local disinfection and anesthesia, wear rubber gloves, and use a 20-gauge puncture needle (21-22 for children) to slowly pierce in the direction of the spinous process. After correcting the angle, perform puncture. When the needle is inserted about 4-6cm for adults (about 3-4cm for children), the dura can be penetrated to reach the subarachnoid space, and the core of the needle can be drawn out to flow out the cerebrospinal fluid. ), then insert the needle core and pull out the puncture needle. Slight pressure on the puncture point to stop bleeding, apply sterile gauze and fix it with tape. Lie down for 4-6 hours after surgery. If the initial pressure exceeds 2.94kPa (300mm water column), it is not suitable to discharge the liquid, and only the cerebrospinal fluid in the manometry tube is sent for cell counting and protein quantification.

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