Lumbar puncture needle puncture method

The puncture is generally performed in the stooped lateral position, from the lumbar 2 to the sacral 1 intervertebral space. The specific method is to disinfect and anesthetize the key parts first, and then slowly pierce the needle along the direction of the spinous process. puncture. For adults, when the needle is inserted about 4-6cm, the puncture needle will penetrate the dura and reach the subarachnoid space. At this time, the cerebrospinal fluid will flow out when the needle core is pulled out. After the core is put in, the puncture needle is pulled out.

Add a certain amount of pressure to the puncture point to stop the bleeding, and then treat it with sterile gauze and tape. At this time, there is another point to note, if the initial pressure exceeds 2.94kPa, then the fluid cannot be discharged at this time. It is only necessary to take the cerebrospinal fluid in the manometry tube and send it to the cell count and protein quantification. In addition, lumbar puncture results usually come out in about a week.

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