Research Article

Treatment of Refractory Postdural Puncture Headache after Intrathecal Drug Delivery System Implantation with Epidural Blood Patch Procedures: A 20-Year Experience

Table 3

Location of epidural blood patch.

Location of EBP relative to IDDS catheterIncidence

At IDDS insertion site6% (1/17)
1 level below47% (8/17)
2 levels below35% (6/17)
3 or more levels below12% (2/17)