[Safety and efficiency of non-permanent inferior vena cava filters in preventing XXXX ].

@entity1 @entity5 @entity1151 @entity432 @entity1211
OBJECTIVE: To assess the effectiveness and safety of non-permanent filter in preventing @entity1151 ( @entity1151 ) caused by @entity1211 ( @entity1211 ). METHODS: The clinical data of 12 @entity1 who were implanted with non-permanent filter for documented @entity1211 in Peking Union Medical College Hospital from September 2003 to June 2006 were retrospectively analyzed. RESULTS: Among these 12 @entity1 , 10 were implanted with temporary filters, and 2 with retrievable filters. All the 12 operations were successful without major complications. In the 10 @entity1 who received temporary filters, filters were smoothly removed after 4 weeks in 9 @entity1 , while one @entity1 was further treated with anticoagulation therapy for 12 weeks because large emboli were entrapped by filter. In the 2 @entity1 who received retrievable filters, filter were smoothly removed 2 weeks later in one @entity1 ; however, in another @entity1 , the filter was left inside because large emboli were entrapped by filter. In all the 12 @entity1 , emboli were entrapped in 6 filters (50%), in which the emboli were larger than 2 cm in 2 @entity1 , larger than 1 cm but less than 2 cm in 1 @entity1 , and less than 1 cm in 3 @entity1 . @entity1151 scanning was performed in 10 @entity1 before primary implantation, and @entity1151 was found in 5 @entity1 . @entity1151 scanning was performed in 8 @entity1 6 months after implantation, and minor @entity1151 was found in 4 @entity1 , whose symptoms and affected pulmonary artery were obviously improved. All @entity1 received regular follow-up (ranged from 3 months to 2 years), 1 @entity1 died of @entity5 4 months after operation, 1 @entity1 suffered @entity432 due to large emboli entrapped by the temporary filter, and 1 @entity1 experienced the recurrence of symptomatic @entity1211 . Symptoms were improved in all the 5 @entity1 with @entity1151 . CONCLUSIONS: Non-permanent filter can safely and effectively protect @entity1 from @entity1151 . More standardized criteria for placement and protocols to ensure timely removal should be developed and implemented.
