45.關於Perioperative β-adrenergic blocker therapy之敘述，下列何者為非?
(A)Patients receiving chronic β-adrenergic blocker therapy should continue taking β-adrenergic blockers throughout the perioperative period
(B)β-adrenergic blockers can be used as the initial or primary treatment of tachycardia caused by perioperative events
(C)If a decision is made to initiate β-blocker treatment in the perioperative period in an effort to reduce cardiac risk, the safest approach may be to initiate therapy with a small dose and titrate to effect over a 7- to 10-day period before the planned surgery.
(D)Acute initiation of large-dose β-adrenergic blockade in the perioperative period should be avoided
(E)Acute withdrawal of preoperative β-adrenergic blockers can be associated with significant morbidity