心电图示心率250次/分，R-R间期匀齐，可能的诊断是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='28256' and id < 2313727 and id<>'2313727' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28256' and id > 2313727 and id<>'2313727' order by id asc limit 5