Alberts W M, Tonner J A, Goldman A L
Department of Internal Medicine, University of South Florida College of Medicine, Tampa.
South Med J. 1989 Jun;82(6):772-4. doi: 10.1097/00007611-198906000-00025.
Interruption of the inferior vena cava by the transvenous placement of a filter or umbrella effectively prevents pulmonary embolism by acting primarily as a physical barrier to emboli. Such a device will be effective only if the site of thrombosis is distal to the planned placement site. We have presented two cases in which a preoperative echocardiogram revealed a right atrial embolus, thereby mandating either embolectomy, fibrinolytic therapy, or continued anticoagulation in addition to the filter placement. These cases suggest that an echocardiogram should be included in the evaluation preceding interruption of the inferior vena cava.
经静脉放置滤器或伞中断下腔静脉，主要通过作为栓子的物理屏障有效预防肺栓塞。仅当血栓形成部位在计划放置部位的远端时，这种装置才会有效。我们报告了两例病例，术前超声心动图显示右心房有栓子，因此除放置滤器外，还必须进行栓子切除术、纤维蛋白溶解疗法或持续抗凝治疗。这些病例表明，在下腔静脉中断术前评估中应包括超声心动图检查。
