Table 2.
Revised Cardiac Risk Index (RCRI) and NT pro-BNP Risk factors included in the RCRI and RCRI score,11 stratified by preoperative heart rate recovery (HRR) ≤12 beats min−1 in the first minute after the end of cardiopulmonary exercise testing. Data are presented as frequencies with percentages (%) or median with inter-quartile range. Continuous data are reported to one decimal place and categorical data are rounded to the nearest whole number. NT Pro-BNP, N-terminal pro-hormone of brain natriuretic peptide
| Whole cohort | HRR≤12 | HRR>12 | |
|---|---|---|---|
| Components of the RCRI (%) | |||
| High-risk surgery | 750 (56.6) | 311 (56.8) | 439 (56.4) |
| Heart failure | 17 (1.3) | 11 (2.0) | 6 (0.8) |
| Coronary artery disease | 153 (11.5) | 84 (15.3) | 69 (8.9) |
| Cerebrovascular disease | 54 (4.1) | 28 (5.1) | 26 (3.3) |
| Preoperative creatinine >177 μmol L−1 | 100 (7.5) | 43 (7.9) | 57 (7.3) |
| Insulin therapy | 54 (4.1) | 26 (4.7) | 28 (3.6) |
| RCRI score (%) | |||
| 0 | 419 (31.6) | 167 (30.5) | 252 (32.4) |
| 1–2 | 871 (65.7) | 355 (64.8) | 516 (66.3) |
| ≥3 | 36 (2.7) | 26 (4.7) | 10 (1.3) |
| NT pro-BNP (pg ml−1) | 82 (40–166) | 100 (47–222) | 76 (35–137) |