Table 1.
Patient and Procedural Characteristics Stratified by Type of cTnT
| Characteristics | All Patients | Conventional cTnT | hs‐cTnT |
|---|---|---|---|
| (N=1722) | (n=749) | (n=973) | |
| Patient characteristics | |||
| Age, y | 66.0±9.6 | 66.0±9.7 | 66.0±9.5 |
| Female sex | 332 (19) | 154 (21) | 178 (18) |
| Body mass index, kg/m2 | 27.8±4.5 | 27.6±4.4 | 27.9±4.5 |
| Diabetes mellitus | 563 (33) | 252 (34) | 311 (32) |
| Current smoker | 399 (23) | 185 (25) | 214 (22) |
| Hypertension | 1390 (81) | 595 (79) | 795 (82) |
| Positive cardiovascular family history | 554 (32) | 264 (35) | 290 (30) |
| Most recent myocardial infarction | |||
| Any history of myocardial infarction | 452 (26) | 212 (28) | 240 (25) |
| Preoperative, d | |||
| 8–21 | 106 (6) | 57 (8) | 49 (5) |
| 22–90 | 69 (4) | 39 (5) | 30 (3) |
| >90 | 277 (16) | 116 (15) | 161 (17) |
| Previous CABGa | 31 (2) | 13 (2) | 18 (2) |
| Previous stroke | 127 (7) | 43 (6) | 84 (9) |
| Extracardiac arteriopathy | 376 (22) | 138 (18) | 238 (24) |
| Chronic obstructive pulmonary disease | 193 (11) | 87 (12) | 106 (11) |
| Dialysis | 18 (1) | 5 (1) | 13 (1) |
| Last preoperative creatinine, μmol/L | 80 (69–93) | 80 (69–92) | 81 (70–94) |
| Creatinine clearance, mL/min | 85.8±31.5 | 83.4±31.8 | 87.7±31.2 |
| Sinus rhythm | 71 (4) | 18 (2) | 53 (5) |
| No. of diseased vessels | |||
| 1 | 32 (2) | 17 (2) | 15 (2) |
| 2 | 242 (14) | 129 (17) | 113 (12) |
| 3 | 1426 (83) | 593 (79) | 833 (86) |
| Left main coronary disease | 372 (22) | 148 (20) | 224 (23) |
| Ejection fraction, % | 57.4±12.1 | 56.6±12.6 | 58.1±11.6 |
| CCS III or IV | 611 (35) | 290 (39) | 321 (33) |
| NYHA III or IV | 335 (19) | 125 (17) | 210 (22) |
| Urgency | |||
| Emergency | 51 (3) | 24 (3) | 27 (3) |
| Urgent | 267 (16) | 133 (18) | 134 (14) |
| Logistic EuroSCORE | 2.6 (1.5–4.6) | 2.7 (1.5–4.8) | 2.5 (1.5–4.5) |
| Procedural characteristics | |||
| Duration of operation, min | 204.6±47.0 | 194.2±45.2 | 212.7±46.8 |
| ECC time, min | 70 (56–85) | 68 (55–82) | 71 (57–86) |
| Cross‐clamp time, min | 44 (35–54) | 43 (34–54) | 44 (35–55) |
Values are arithmetic mean±SD, number (percentage), or median (interquartile range). CABG indicates coronary artery bypass grafting; CCS, Canadian Cardiovascular Society; cTnT, cardiac troponin T; ECC, extracorporeal circulation; hs‐cTnT, high‐sensitivity cTnT; and NYHA, New York Heart Association.
a
Each patient was included once in our cohort; in case of a second CABG procedure during the inclusion period, only the first procedure was considered.