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. 2023 May 18;13(5):e068147. doi: 10.1136/bmjopen-2022-068147

Figure 1.

Figure 1

Steps for patient recruitment and data collection. BNP, B-type natriuretic peptide; DOS, day of surgery; KGH, Kingston General Hospital; MINS, myocardial injury after non-cardiac surgery; NT-pro-BNP, N-terminal pro-B-type natriuretic peptide; POD, postoperative day; RCRI, Revised Cardiac Risk Index; RN, registered nurse.