Figure 1

Study flow chart. During the study period, 1,775 patients were admitted to the emergency department, including 276 patients with OHCA. Based on the inclusion and exclusion criteria, a total of 52 patients with OHCA were included in this pilot study. CPA; cardiopulmonary arrest, GI; gastrointestinal, AAA; abdominal aortic aneurysm, TAA; thoracic aortic aneurysm, AoD; aortic dissection, OBGYN; obstetrics and gynaecology, IHCA; in-hospital cardiac arrest, OHCA; out-of-hospital cardiac arrest, COPD; chronic obstructive pulmonary disease, ECPR; extracorporeal cardiopulmonary resuscitation, PCPS; percutaneous cardiopulmonary support, ROSC; return of spontaneous circulation.