Failure of pencil-point spinal needles to enter the subarachnoid space.
Brighouse
D
D
Wilkins
A
A
D000767:Anesthesia, Epidural / Q000295:instrumentation*; D000773:Anesthesia, Obstetrical / Q000295:instrumentation*; D000775:Anesthesia, Spinal / Q000295:instrumentation*; D002585:Cesarean Section; D004867:Equipment Design; D005260:Female; D006801:Humans; D009339:Needles; D011247:Pregnancy