一患者血清尿素氮28.4mmol/L，血肌酐144μmol/L，应首先考虑的原因是

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='30455' and id < 2460539 and id<>'2460539' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30455' and id > 2460539 and id<>'2460539' order by id asc limit 5