| PND | paroxysmal nocturnal dyspnea; partial neck dissection; postnasal drainage; postnasal drip; postnatal... |
|---|---|
| IC | 1) Iidirect Current 2) Intra-Cranial 3) Inspiratory Capaci... |
| IRV | Inspiratory Reserve Volume |
| ARIS | auto-regulated inspiratory support |
| FEF50/FIF50 | ratio of expiratory flow to inspiratory flow at 50% of forced vital capacity |