Following a lumbar puncture (spinal tap), which position should the client be placed in and for how long?

Post-lumbar puncture care:

Positioning: Flat (supine or prone) 4-8 hours per order — the evidence for preventing post-LP headache with positioning has evolved (some studies suggest not clearly beneficial) but most institutions still recommend flat positioning; the rationale: CSF leaks through the dural puncture site when upright; lying flat reduces pressure differential.

Post-lp headache: Most common complication; worst when upright, relieved when flat; typically occurs 24-48 hrs post-procedure.

Treatment: Fluids (increases CSF production); caffeine (vasoconstrictive, reduces headache); blood patch (definitive treatment if severe — autologous blood injected at puncture site to seal the leak).

Monitoring: Vital signs; neurological status; headache assessment; check puncture site for CSF leak or haematoma.

Additional post-lp care: Encourage PO fluids if not restricted; monitor sensation/movement in lower extremities; report any numbness, weakness, or bowel/bladder changes immediately.