This episode has been a long time in the making- presenting Pulmonary Embolism, part 1. PE is a deadly diagnose that we frequently have to consider in the ED. The presentations can be very varied but we need to know how to work up this disease while avoid unnecessary testing and harm to our patients. In part 1, we will discuss risk factors for PE, symptoms that should make you suspicious for PE, and how to order the correct labs and imaging to diagnose this serious condition.