| in myocardial ischemia | 4 | other |
| to deliver drug | 2 | purpose |
| by applying an electrical potential | 2 | manner |
| invention → relate to → drug | 8 |
| invention → be → drug | 4 |
| invention → introduce → drug | 3 |
| negative | neutral | positive |
| 0.129 | 0.790 | 0.082 |
| Raw frequency | 15 |
| Normalized frequency | 0.212 |
| Modifier score | 0.500 |
| Perplexity | 64.795 |