Risk Factors for Recurrence of Postdural Puncture Headache Following an Epidural Blood Patch: A Retrospective Cohort Study

( Int J Obstet Anesth . 2023;56:103925. doi: 10.1016/j.ijoa.2023.103925) Neuraxial anesthesia is a commonly used technique during childbirth. Postdural puncture headache (PDPH) is a notable complication, occurring in a minority of patients but with the potential to lead to severe short and long-term adverse outcomes. Definitive treatment typically involves an epidural blood patch (EBP), although it may not always be successful, with some patients requiring multiple procedures. Risk factors for EBP failure remain uncertain, with conflicting findings regarding the timing and volume of blood injected. This study aimed to assess the incidence and risk factors for EBP failure in a substantial patient cohort, providing insights into improving outcomes for patients undergoing this procedure.