| prevent the backflow of… | 0.62 |
| control the flow of blo… | 0.45 |
| flow in right direction | 0.42 |
| flow toward the heart | 0.36 |
| act as one-way flaps | 0.32 |
| assist unidirectional f… | 0.32 |
| move in one direction | 0.25 |
| close in response | 0.25 |
| wear out over time | 0.21 |
| weaken over time | 0.19 |
| More » |
| placed inside renal vein | 0.54 |
| placed at junction | 0.35 |
| replaced | 0.35 |
| present in vein | 0.34 |
| repaired | 0.34 |
| unable to close | 0.32 |
| closed | 0.28 |
| configured to be placed… | 0.25 |
| affected | 0.19 |