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Criteria for choice of the subvalvular aortic and sinotubular ring size
| Variables | Surgical aortic annular size (Hegar) (mm) | |||
|---|---|---|---|---|
| 25–27 | 28–31 | 32–35 | > 35 | |
| Sinotubular junction extra-aortic ring (mm) | 25 | 27 | 29 | 31 |
| Subvalvular extra-aortic ring (mm) | 25 | 27 | 29 | 31 |
