对长期卧床患者进行体位变换可预防压疮，下列体位变换操作不正确的是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30905' and id < 2486658 and id<>'2486658' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30905' and id > 2486658 and id<>'2486658' order by id asc limit 5