Accidental dural puncture.
D000059:Accidents; D000767:Anesthesia, Epidural / Q000009:adverse effects*; D004388:Dura Mater / Q000293:injuries*; D006261:Headache / Q000188:drug therapy / Q000209:etiology; D006801:Humans; D007049:Iatrogenic Disease; D012965:Sodium Chloride / Q000008:administration & dosage
D012965:Sodium Chloride