| Cardiac surgery | Types of cardiac surgery | |
| Number of patients | n | |
| Aortocoronary bypass | 10 | |
| Mitral valve recontruction/replacement | 3 | |
| Aortic valve replacement | 2 | |
| Aortoplasty | 1 | |
| Aortoplasty and aortic valve replacement | 1 | |