Lit Matters #2: Preventing Post LP Headache

Post-lumbar puncture headache is driven more by technique than by post-procedure rituals. The best-supported prevention steps are choosing an atraumatic needle and favoring lateral decubitus positioning, while bed rest, extra fluids, and caffeine do not reliably reduce PLPH.

Preventing Post-LP Headache

• Atraumatic needle choice: Atraumatic needles have the clearest evidence for lowering post-lumbar puncture headache risk, and they do not appear to make the procedure meaningfully harder in routine practice.
• Lateral decubitus positioning: Lateral decubitus positioning may reduce PLPH compared with seated attempts, a practical setup detail that matters more than many of the post-LP rituals we still use.
• Post-procedure myths: Bed rest, extra fluids, and caffeine have not shown reliable benefit for preventing PLPH, a useful reset if your usual discharge advice still leans on them. We get into the evidence nuances in the episode.
• Patient risk patterns: Older age appears protective, while children and newborns carry higher risk; sex, low BMI, and chronic headache history are less settled than many clinicians assume.
• Technique details that matter: A higher intervertebral space may lower headache risk, whereas limiting CSF volume, aspirating CSF, and difficult or prolonged attempts have not shown consistent prevention benefit.