retrospective operation

例句：

1. 1. The surgeon performed a retrospective analysis of the patient's medical records.
   外科医生对患者的医疗记录进行了回顾性分析。
2. 2. The hospital implemented a retrospective operation to improve patient care.
   医院实施了一项回顾性操作，以改善患者护理。
3. 3. During the surgery, the anesthesiologist reviewed the patient's medical history for any potentialcomplications.
   麻醉师在手术过程中回顾了患者的医疗史，以查找任何潜在的并发症。