Temporal Validation and Simplification of Mortality Prediction for Perioperative Cardiopulmonary Resuscitation

Background

Perioperative cardiac arrest is associated with high mortality, but population-level estimates of outcomes after perioperative cardiopulmonary resuscitation (CPR) do not account for differences in risk among individual patients. We previously developed the CPR OutcoMes Prediction for Arrest in Surgical Settings (COMPASS) model to estimate 30-day mortality after cardiac arrest requiring CPR on the day of surgery. The model incorporates 33 preoperative predictors and has not been evaluated in a temporally distinct cohort. We therefore sought to temporally validate COMPASS and to develop and temporally validate a simplified point-based mortality score.