| to the inside of the vein | 7 | transitive-object |
| to the vascular system for dialysis | 5 | purpose |
| for introducing pharmaceutical agents | 5 | purpose |
| catheter → be → accessed | 9 |
| catheter → provide → access | 6 |
| catheter → be used to gain → access | 4 |
| catheter → allow → access | 3 |
| catheter → be configured to provide → access | 3 |
| negative | neutral | positive |
| 0.076 | 0.815 | 0.109 |
| Raw frequency | 25 |
| Normalized frequency | 0.353 |
| Modifier score | 0.500 |
| Perplexity | 225.824 |