心源性呼吸困难最常见的病因是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30901' and id < 2485934 and id<>'2485934' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30901' and id > 2485934 and id<>'2485934' order by id asc limit 5