体外循环结束时为中和肝素应选择的药物是（ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='28451' and id < 2324104 and id<>'2324104' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28451' and id > 2324104 and id<>'2324104' order by id asc limit 5