Purpose of lumbar puncture

1. To examine the properties of cerebrospinal fluid to assist in the diagnosis of inflammatory or hemorrhagic diseases of the central nervous system.

2. Determination of intracranial pressure to understand whether the subarachnoid space is blocked.

3. Do other auxiliary examinations, such as pneumoencephalography, spinal cord aerography, and radionuclide scanning of ventricles and cisterns.

4. After intracranial hemorrhage, inflammation or brain surgery, drainage of irritated cerebrospinal fluid can relieve clinical symptoms.

5. Administer lumbar anesthesia or intrathecal drug therapy.

Preparation of the patient position: The patient is lying on the side of the hard board bed, the back is perpendicular to the bed surface, the head is flexed forward and the chest is flexed, and the knees are close to the abdomen with both hands to make the trunk arched; At the same time give psychological comfort.

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