I didn’t know __________________.

A．how many times he has been to his favourite place of interest

B．why did he go to France

C．What’s the matter with the Ipad bought yesterday

D．who to ask for help when in trouble

患者男，65岁。主因活动后背部剧烈疼痛5h，双下肢无力1h入院。同时伴出汗、心慌、胸闷等不适。既往有高血压病史。体格检查：T36.5℃，BP140/90mmHg。口唇发绀。心率86次/min，律齐，主动脉瓣3/6级舒张期杂音。右侧足动脉搏动摸不到，右下肢皮温低。

应尽快做的处理包括（）（提示入院1h患者仍有背部剧烈疼痛，不随体位改变而有所缓解，且呼吸急促，30次/min，面色苍白，大汗。心率110次/min，血压150/95mmHg。心电图无明显改变，心肌酶及D-二聚体结果无异常升高，X线示主动脉影增宽。）

A.静卧

B.吸氧

C.给予β-受体阻滞剂

D.静脉应用喘定

E.皮下应用低分子肝素

F.静脉注射吗啡

G.溶栓治疗