Table 2.
Classification of MR based on etiology, mechanism, degree and frequencies of concomitant valve disease in the study population
| Variable | Frequencies | Percentage (%) | |
|---|---|---|---|
| Etiology | Primitive | 431 | 85.5 |
| Secondary | 53 | 10.5 | |
| Mixed | 20 | 4 | |
| Degree | Mild | 392 | 77.8 |
| Moderate | 104 | 20.6 | |
| Severe | 8 | 1.6 | |
| Mechanism a(Carpentier’s classification) | Type I | 14 | 12.5 |
| Type II | 4 | 2.7 | |
| Type III a | 53 | 46.4 | |
| Type III b | 41 | 34.8 | |
| Concomitantsignificative valve disease | Mitral Stenosis | 1 | 0.2 |
| Aortic Regurgitation | 22 | 4 | |
| Aortic Stenosis | 7 | 1 | |
| Tricuspid regurgitation | 55 | 11 | |
aOnly for patients with moderate to severe MR