50. 有關骨科手術麻醉，下列何者為非？
(A) Use of regional anesthesia in the patient with a recognized difficult airway can notsolve the problem of the difficultairway.
(B) Regional anesthesia may reduce the incidence of major perioperative complications with certain surgical procedures.
(C) Regional anesthetic techniques provide superior pain relief after orthopedic surgery.
(D) Peripheral nerve blocks employing long-acting anesthetics or catheters provide both excellent intraoperative anesthesiaand superior postoperative analgesia.
(E) Regional analgesia can not block the progression of severe acute postoperative pain into a chronic pain syndrome.