56、 Postoperative delirium in the elderly is common. Which statement is least
appropriate?
(A) Hemodynamic complications such as hypotension, dysrhythmia are associated
with its occurrence
(B) Hypoactive type is more common than hyperactive type
(C) Incidence is 5-10 %
(D) The type of anesthesia is not related to the occurrence of delirium
(E) Routine preoperative testing is not necessary