| for 10 minutes | 4 | temporal |
| to facilitate blood flow | 3 | purpose |
| catheter → be → expanded | 9 |
| catheter → expand to → larger diameter | 3 |
| catheter → have → expandable portion | 3 |
| negative | neutral | positive |
| 0.034 | 0.880 | 0.086 |
| Raw frequency | 15 |
| Normalized frequency | 0.268 |
| Modifier score | 0.500 |
| Perplexity | 305.178 |