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Criteria favoring BEV vs. SEV as a second THV for TAV-in-TAV.
| BEV (Sapien XT/3) | SEV (Corevalve/Evolut) | |
|---|---|---|
| Low coronary height | Preferable | Feasible |
| Small native annular diameter | Feasible | Preferable |
| Narrow sinuses | Preferable | Feasible |
| Small STJ/ascending aorta | Preferable | Feasible |
| Indication | ||
| SVD | Feasible | Feasible |
| PPM | Feasible | Preferable |
| Index THV | ||
| BEV/low frame as the index THV | Feasible | Preferable |
| SEV/High frame as the index THV | Preferable | Feasible |
| Low implantation depth | Feasible | Preferable |
