Backflow of cerebrospinal fluid through a 25 gauge spinal needle after puncture of the arachnoid mater during initiation of spinal anaesthesia
Schematic drawing showing the principles of spinal anaesthesia.

PDPH is a common side effect of lumbar puncture and spinal anesthesia.

- Post-dural-puncture headache

Post-dural-puncture headache or post-spinal headache - Associated with the size and type of spinal needle used. A 2020 meta analysis concluded that it is recommended to use the 26-G atraumatic hypodermic needle to lower the risk of PDPH.

- Spinal anaesthesia
Backflow of cerebrospinal fluid through a 25 gauge spinal needle after puncture of the arachnoid mater during initiation of spinal anaesthesia

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