21. 有關硬脊膜穿破後引起頭痛 (post-dural puncture headache) 的陳述,何者為真?
(A)Using large gauge “cutting” needles is the best preventive measure when
performing a spinal anesthetic
(B) It results from decreased cerebrospinal fluid (CSF ) pressure secondary to loss of
CSF at the puncture site
(C) Gender has no influence upon incidence
(D)Early ambulation will increase the incidence
(E) An epidural blood patch is always indicated