ROC analysis with AUC for NT-proBNP and 1-year mortality
| Preoperative | Postoperative day 1 | Postoperative day 3 | |
| All-SAVR | |||
| AUC (95 % CI) | 0.79 (0.71 to 0.88) | 0.71 (0.52 to 0.89) | 0.79 (0.61 to 0.94) |
| P value | 0.001 | 0.03 | 0.002 |
| NT-proBNP cut-off (ng/L) | 955 | 4040 | 4815 |
| Sensitivity/specificity | 0.82/0.71 | 0.70/0.76 | 0.90/0.63 |
| AS (SAVR) | |||
| AUC (95 % CI) | 0.86 (0.76 to 0.96) | 0.85 (0.76 to 0.94) | 0.82 (0.70 to 0.94) |
| P value | 0.014 | 0.017 | 0.03 |
| NT-proBNP cut-off (ng/L) | 975 | 4040 | 4855 |
| Sensitivity/specificity | 1.0/0.74 | 1.0/0.78 | 1/0.73 |
| AS+CABG (SAVR) | |||
| AUC (95 % CI) | 0.75 (0.60 to 0.90) | – | 0.78 (0.46 to 1.0) |
| P value | 0.045 | – | 0.042 |
| NT-proBNP cut-off (ng/L) | 915 | – | 10 035 |
| Sensitivity/specificity | 0.83/0.64 | – | 0.80/0.93 |
AS, aortic stenosis; AUC, area under the curve; CABG, coronary artery bypass grafting; NT-proBNP, N-terminal pro-B-type natriuretic peptide; ROC, receiver operating characteristic; SAVR, surgical aortic valve replacement.