lumbar puncture needle puncture position

The patient should be placed in a lateral or sitting position. To obtain accurate opening pressure and reduce the risk of post-puncture headache, the lateral position is preferred. Not all patients can receive a lumbar puncture in any position, so physicians learn to perform the procedure with the patient lying on the left, right, and upright positions. Once the patient's basic position is established, the physician should instruct the patient to adopt a fetal position or to arch the waist "like a cat" to increase the space between the spinous processes. When the patient is in a sitting position, the lumbar spine should be perpendicular to the tabletop, and when the patient is in a lateral position, the lumbar spine should be parallel to the tabletop.

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