Successful myelography after dry spinal puncture.

Failure after cerebrospinal fluid flow and success after no cerebrospinal fluid flow during spinal anesthesia induction for intrapartum cesarean section -A report of two cases-

“…Causes of this rare phenomenon, also called "dry tap," include a blocked needle, history of spinal surgery, spinal stenosis, adhesive arachnoiditis, and low CSF pressure [6,7]. The patient experiencing this dry tap phenomenon had no history of spinal surgery, symptoms of spinal stenosis, or adhesive arachnoiditis.…”