下腔静脉滤器植入术可有效阻止血栓进入肺动脉，植入滤器的位置应为：

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24995' and id < 2128781 and id<>'2128781' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24995' and id > 2128781 and id<>'2128781' order by id asc limit 5