Post lumbar puncture headache is minimized by all except:
(Refer: Lee’s, Clinical Anaesthesia, 12th edition, pg no:685-687)
Post-Lumbar Puncture Headache
Etiology
CSF leak leading to decreased ICP
Breach or scratching of dura due to:

Lumbar puncture
Myelogram
Spinal Anaesthesia
Wet epidural tap
Uncomplicated epidural due to scratching of dura

Factors affecting post lumbar puncture headache
Keep stylet and remove needle
Atraumatic needle
Small diameter needle
Hydration by crystalloid infusion