Greenfield L J, Proctor M C
Department of Surgery, University of Michigan Medical Center, USA.
Cardiovasc Surg. 1995 Apr;3(2):199-205. doi: 10.1016/0967-2109(95)90895-c.
The purpose of this study was to characterize the long-term safety and efficacy of the stainless-steel Greenfield filter. All patients who underwent Greenfield filter placement at three institutions during tenure of the senior author (L.J.G.) were entered prospectively into a filter registry and followed on an annual basis. Follow-up consisted of clinical examination to evaluate the status of venous disease or recurrence of pulmonary embolism, abdominal radiographs to determine the stability of the filter and an evaluation of the patency of the inferior vena cava and lower extremities. This report summarizes the 20-year experience. The rate of recurrent pulmonary embolism was 4% and the caval patency rate was 96%. Some filter movement of no clinical significance was seen in 8% of cases. There was no procedural mortality and morbidity was minimal. Greenfield filter insertion provides long-term protection from pulmonary embolism while preserving caval patency.
本研究的目的是描述不锈钢Greenfield滤器的长期安全性和有效性。在资深作者（L.J.G.）任职期间，于三家机构接受Greenfield滤器植入的所有患者均被前瞻性地纳入滤器登记系统，并每年进行随访。随访包括临床检查以评估静脉疾病状况或肺栓塞复发情况、腹部X光片以确定滤器的稳定性以及评估下腔静脉和下肢的通畅情况。本报告总结了20年的经验。肺栓塞复发率为4%，腔静脉通畅率为96%。8%的病例出现了一些无临床意义的滤器移位。无手术死亡，发病率极低。植入Greenfield滤器可在保持腔静脉通畅的同时为预防肺栓塞提供长期保护。
