What is the depth of the lumbar piercing needle?

The depth of needle insertion for adult lumbar puncture is generally 4~6 cm. Lumbar puncture is performed in the gap between L3~L4 or L4~L5, and the needle is inserted slowly in the direction perpendicular to the back. People who are obese have a deeper progression, and those who are thinner have a shallower depth of needle insertion, and the speed should be slow, not too fast. It is recommended to rest more after the lumbar puncture to avoid excessive fatigue, so as not to cause headaches and dizziness.

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