Retrievable Inferior Vena Cava Filter Trapped Embolus: A Risk Factor of Detachment of Thrombus Analysis Based on a Multicenter Prospective Observational Study

• Published in: Journal of endovascular therapy 2023-10, p.15266028231205718-15266028231205718
• Main Authors: Zhang, Lei, Hu, Wen-Ping, Zhang, Hao, Xia, Shi-Bo, Wang, Hong-Fei, Song, Chao, Lu, Qing-Sheng
• Format: Article
• Language: English
• ISSN: 1526-6028; 1545-1550
• DOI: 10.1177/15266028231205718

PURPOSEUp to now, the indications of inferior vena cava filter placement still remain controversial in the academic field. The aim of this study was to determine the risk factors of detachment of thrombus and to evaluate the necessity of inferior vena cava filter placement to prevent fatal pulmonary embolism. MATERIALS AND METHODSA total of 2892 patients participated in the multicenter prospective observational study from January 1, 2018, to December 31, 2018, and underwent retrievable inferior vena cava filter (RIVCF) placement in 103 centers in China. The primary endpoint of the study was RIVCF trapped embolus detected by inferior vena cava venography/ultrasound/computed tomography scanning or visible macroscopic thrombus before or during RIVCF retrieval. The relative factors of RIVCF trapped embolus were analyzed accordingly. RESULTSThe average age of the patients was 61.0 (50.0-71.0) years. Retrievable inferior vena cava filter trapped embolus occurred in 308 patients (10.65%). The fracture location, surgery location, and endovascular intervention differed between RIVCF trapped embolus and non-RIVCF trapped embolus groups (p