Oedit, R.

patient headache treatment epidural blood patch study puncture blood epidural patch dural 7 days randomised effect postdural puncture headache trial dural puncture randomisation prophylactic relief number blood patch epidural space group outcome 24 hours symptom needle efficacy research neurology obstetric research nurse effectiveness treatment group page number postural headache epidural blood patching method space subject post-dural puncture headache citation purposes data acquisition anaesthesia study period treatment allocation 1 week telephone procedure postdural article review obstetric patients fluid intake treatment strategies analysis incidence neurol measure fluid patching severity follow-up prophylactic measures firm conclusions presence downloaded prophylactic edbp result psychiatry control neurosurg group.bmj.com jnnp.bmj.com recovery purpose 4- point scale citation table sample size