Table 1 Baseline characteristics of patients referred for coronary artery bypass grafting
From: Perioperative outcomes of coronary artery bypass graft surgery in Johannesburg, South Africa
All Patients (n = 1218) | Mortality | |||
|---|---|---|---|---|
No (n = 1081) | Yes (n = 137) | p- value | ||
Age, years (SD) | 60.1 ± 10.1 | 59.6 ± 10.1 | 63.7 ± 9.7 | 0.000 |
Male, n (%) | 951 (78.1) | 844 (78.1) | 107 (78.1) | 0.994 |
Ethnicity, n (%) | 0.344 | |||
White | 634 (52.0) | 569 (52.6) | 65 (47.4) | |
Indian | 358 (29.4) | 319 (29.5) | 39 (28.5) | |
Black | 137 (11.2) | 117 (10.8) | 20 (14.6) | |
Mixed ancestry | 79 (6.5) | 66 (6.1) | 13 (9.5) | |
Medical history, n (%) | ||||
Hypertension | 908 (74.5) | 813 (75.2) | 95 (69.3) | 0.138 |
Diabetes mellitus | 400 (32.8) | 345 (31.9) | 55 (40.1) | 0.053 |
Dyslipidaemia | 865 (71.0) | 791 (73.2) | 74 (54.0) | 0.000 |
Stroke | 32 (2.6) | 27 (2.5) | 5 (3.6) | 0.427 |
PVD | 50 (4.1) | 42 (3.9) | 8 (5.8) | 0.277 |
COPD | 159 (13.0) | 138 (12.8) | 21 (15.3) | 0.402 |
Smoking | 629 (51.6) | 576 (53.3) | 53 (38.7) | 0.001 |
NYHA class, n (%) | 0.000 | |||
I | 523 (48.1) | 491 (50.7) | 32 (26.9) | |
II | 396 (36.4) | 344 (35.5) | 52 (43.7) | |
III | 141 (13.0) | 118 (12.2) | 23 (19.3) | |
IV | 27 (2.5) | 15 (1.5) | 12 (10.1) | |
Laboratory indices | ||||
Haemoglobin, g/dL | 14.4 ± 1.7 | 14.5 ± 1.7 | 14.2 ± 1.5 | 0.107 |
Sodium, mmol/l | 140 ± 3.8 | 140 ± 3.7 | 140 ± 4.8 | 0.107 |
eGFR, ml/min | 86 (71–99) | 87 (73–101) | 74 (56–89) | 0.000 |
LVEF, % | 50.3 ± 12.8 | 51.2 ± 12.2 | 42.9 ± 14.8 | 0.000 |
CPB time (min) | 139 (115–167) | 137 (114–163) | 162 (126–211) | 0.000 |
Aortic clamp time (min) | 89 (71–107) | 89 (70–106) | 95 (72–112) | 0.107 |
EuroSCORE II | 1.6 (0.9–3.5) | 1.5 (0.9–3.1) | 5.7 (2.5–10.9) | 0.000 |