Patient demographics and preoperative data
| Characteristics | Values |
| Gender (male), n (%) | 15 (60) |
| Age, years (SD) | 67.8 (10.4) |
| Hypertension, n (%) | 14 (56) |
| Atrial fibrillation, n (%) | 17 (68) |
| Pulmonary hypertension, n (%) | 11 (44) |
| Baseline creatinine, µmol/L (SD) | 96 (44) |
| Chronic pulmonary disease, n (%) | 4 (16) |
| Cerebrovascular accident, n (%) | 2 (8) |
| Previous cardiac surgery, n (%) | |
| CABG | 12 (48) |
| MV replacement | 3 (12) |
| Open mitral commissurotomy | 3 (12) |
| CABG and MV surgery | 2 (8) |
| Congenital repair | 2 (8) |
| MV repair | 1 (4) |
| AVR | 1 (4) |
| Aortic root replacement | 1 (4) |
| Number of previous sternotomies, n (%) | |
| 1 | 18 (72) |
| 2 | 6 (24) |
| 3 | 1 (4) |
| Mitral valve disease, n (%) | |
| Regurgitation | 22 (88) |
| Stenosis | 1 (4) |
| Mixed | 2 (8) |
| Mitral valve pathology, n (%) | |
| Rheumatic | 5 (20) |
| Myxomatous | 10 (40) |
| Ischaemic/functional | 4 (16) |
| Annuloplasty ring/valve dehiscence | 4 (16) |
| Failed mitral prosthesis | 1 (4) |
| Failed previous repair | 1 (4) |
| NYHA class, n (%) | |
| NYHA 1 | 3 (12) |
| NYHA 2 | 6 (24) |
| NYHA 3 | 9 (36) |
| NYHA 4 | 7 (28) |
| Left ventricular systolic function | |
| Preserved | 17 (68) |
| Moderate dysfunction | 8 (32) |
| Severe dysfunction | 0 (0) |
AVR, aortic valve replacement; CABG, coronary artery bypass grafting; MV, mitral valve; NYHA, New York heart association.