目的 总结分析急诊观察室患者流行病学特点及临床疗效，为临床急诊治疗提供指导。 方法 以2007年1月－2010年12月收治的247 312例急诊观察室患者为研究对象，按年龄、性别、地域分布、疾病种类、发病时间、好转率、收入院百分率、死亡率等因素进行流行病学分析。 结果 各年度患者人数呈增加趋势，2010年减缓；城镇患者占91.5%；20～40岁患者占45.9%，40～60岁患者占27.2%，＞60岁占21.3%；疾病种类分布中呼吸系统占42.4%，心血管疾病患者数量呈升高趋势，以老年人为主，中毒患者呈下降趋势。全年6、7、8月份因发热、上呼吸道感染患者较多，总数增加明显，其次11、12、1月份因慢性支气管炎急发患者较多，总数也有升高趋势；白天工作时间患者数量占66.2%；平均每天就诊人次为169.4人次，节假双休日平均每天就诊人次为191.1人次（P＜0.01）；各年度好转率呈升高趋势，收入院百分率无显著变化，死亡率无显著区别。 结论 近年急诊观察室患者以呼吸系统疾病为主，好转率呈升高趋势，但心血管疾病数量呈升高且有年轻化趋势，值得重视。
We systematically and retrospectively analyzed the experience and lessons from the command system, medical rescue force deployment, medical treatment, public health response for infectious disease control, and health counterpart assistance for emergency medical rescue after the 2008 earthquake in Wenchuan, Sichuan Province, China. We propose that emergency medical rescue after tremendous catastrophes in China link responses at the national, provincial, city, and county levels, to set up an effective and cooperative medical relief forces coordination system and an effective triage system and rehabilitation plan. In addition, infectious disease control should be planned and assessed more quickly, and developing vital functions of pairing-assistance as a means with Chinese characteristic. Our aim is to provide a useful reference for medical rescue after natural catastrophes worldwide, especially after earthquakes.