Objective To discuss the implantation and conversion technology of convertible inferior vena cava filter and the experience of management.Methods The clinical data of 115 patients with convertible inferior vena cava filter implantation admitted to our vascular surgery center from January 2018 to December 2018 was retrospectively analyzed.Results Among the 115 patients with convertible inferior vena cava filter implantation, 74 were males and 41 were females. The ages ranged from 22 to 87 years, with median age 54 years. The successful rate of filter implantation was 100% without any surgical related complications. After implantation surgery, patients were followed up from 4 to 455 days with a median of 90 days and the recurrence rate of adverse events was 7.8% (9/115). The recurrence time were 16 to 104 days after conversion, with a median of 42 days. Twenty-three patients (20.0%) received filter conversion, one of them failed and all the others succeeded. The technical successful rate was 95.7% (22/23). The conversion operative time was 22.8 to 51.4 min, with median time 27.4 min. The intervals between implantation and conversion were from 4 to 455 days, with median time 159 days. Accessory techniques were used in 20 of 22 successful filter conversions and the application rate of accessory technique was 90.9%. The patients were followed-up from 30 to 180 days after conversion with a median time of 90 days and no adverse event was reported.Conclusion Convertible inferior vena cava filter is a significant choice for patients application of inferior vena cava filter due to its high safety of conversion surgery, technical success rate and possibility of conversion after long-term indwelling.
LI Tao, DOU Lei, DONG Shuilin, AI Xi, WANG Zhihui, YU Yang, ZHANG Zhiwei, YANG Jun. Analysis and experience of clinical application of convertible inferior vena cava filter. CHINESE JOURNAL OF BASES AND CLINICS IN GENERAL SURGERY, 2021, 28(9): 1177-1181. doi: 10.7507/1007-9424.202012086