This study compared the revised cardiac risk index and three atrial fibrillation thrombo‐embolic risk models for predicting 30‐day cardiovascular events after non‐cardiac surgery in patients with a pre‐operative history of atrial fibrillation.
Such patients had a higher rate of 30 day myocardial injury, heart failure, stroke, resuscitated cardiac arrest or cardiovascular death (29% vs. 13%).
The study found that the revised cardiac risk index was outperformed by other thromboembolic scores – CHADS2 , CHA2DS2‐VASc and R2CHADS2.
However “none of the four models exhibited strong discrimination metrics. There remains a need to develop a better peri‐operative risk prediction model.”