Outpatient surgical care and invasive medical procedures are increasing. Prior research from the Veterans Health Administration (VHA) found that wrong-side or wrong-site adverse events were more common in the outpatient setting than the inpatient setting when the procedure was performed outside the operating room.¹ Both inpatient and outpatient operating room–based surgical procedures are evaluated by the National Surgical Quality Improvement Program²; however, non–operating room outpatient invasive procedures are not assessed. To address this gap and inform future research, we measured the prevalence of postprocedure emergency department (ED) visits and admissions and explored the association of these outcomes with relevant patient, procedure, and facility factors.³

门诊外科护理和侵入性医疗程序正在增加。退伍军人卫生管理局（VHA）的先前研究发现，与在手术室外进行手术时的住院情况相比，在门诊环境中发生错误或部位错误的不良事件更为普遍。¹基于国家手术质量改善计划²评估基于住院和门诊手术室的手术程序；但是，未评估非手术室门诊侵入性程序。为了弥补这一差距并为将来的研究提供参考，我们测量了急诊科（ED）访视和入院的患病率，并探讨了这些结局与相关患者，手术和设施因素之间的关系。³