Complications of Epidural Placement
Subdural catheter:
Diagnosis of unintentional subdural anesthesia/analgesia: analyzing radiographically proven cases to define the clinical entity and to develop a diagnostic algorithm. by Hoftman NN, Ferrante FM. in Reg Anesth Pain Med. 2009 Jan-Feb;34(1):12-6.
Subdural placement of "epidural" catheters is a recognized complication of epidural placement, but one which is poorly recognized. This article provides a good overview of the problem, and proposes an algorithm for diagnosis.