Systematic Review: In patients who are about to undergo noncardiac surgery, biomarkers (BNP/NT‐proBNP, troponin or their combination) may provide added prognostic value to the Revised Cardiac Risk Index for preoperative prediction of major adverse cardiac events and all‐cause mortality. The results cannot be interpreted as conclusive due to the high risks of bias in most papers.

The comparative and added prognostic value of biomarkers to the Revised Cardiac Risk Index for preoperative prediction of major adverse cardiac events and all‐cause mortality in patients who undergo noncardiac surgery – Cochrane Library

Summary: Can biomarkers improve predictions of the RCRI tool to predict heart-related complications in patients undergoing surgery other than heart surgery? – Cochrane Library