preoperative是什么意思

adj.外科手术前的

1、The preoperative assessment is necessary to ensure the safety of the surgical procedure.
术前评估是必要的，以确保手术过程的安全。

2、The patient was given preoperative instructions on what to eat and drink before the surgery.
病人被告知术前应该如何饮食。

术前的；操作前的。