Perioperative cardiac arrest (PCA) in patients undergoing noncardiac surgery is a rare but potentially catastrophic event associated with high mortality. Several studies have highlighted the factors contributing to PCA in the surgical population. However, information on outcomes after PCA among the surgical population is still limited. Our study aims to identify the incidence of PCA, 30-days mortality and the factors associated with PCA and 30-day mortality after PCA in adults undergoing non-cardiac surgery

Inclusion Criteria:

• patients aged> 18 years old
• history of perioperative cardiac arrest
• non- cardiac surgery

Exclusion Criteria:

• did not receive cardiopulmonary resuscitation (CPR) during PCA
• incomplete data regarding 30-day mortality were excluded

Patients >eighteen years that had non-cardiac surgery under anesthesia and a history of PCA between January 2015 and December 2021 were eligible for inclusion. Patients with a do not resuscitate (DNR) order, who did not receive cardiopulmonary resuscitation (CPR) during PCA, or with incomplete data regarding 30-day mortality were excluded. PCA was defined as the absence of mechanical heart function (determined by a central pulse) and loss of effective circulation between the administration of anesthesia until 24 hours after surgery