The nurse is giving instructions to a client who is going home with a cast on his leg. Which point is most critical

A. Using crutches properly.
B. Exercising joints above and below the cast, as ordered.
C. Avoiding walking on a leg cast without the physician’s permission.
D. Reporting signs of impaired circulation.

先天性胆道闭锁可行（）

A．胆囊造口术 

B．胆囊切除术 

C．胆囊切除术，胆总管探查术 

D．胆囊空肠Roux-en-Y吻合术 

E．肝总管空肠Roux-en-Y吻合术