| IRV | Inspiratory Reserve Volume |
|---|---|
| ARIS | auto-regulated inspiratory support |
| FEF50/FIF50 | ratio of expiratory flow to inspiratory flow at 50% of forced vital capacity |
| FIF | feedback inhibition factor; fibroblast interferon; forced inspiratory flow; formaldehyde-induced flu... |
| FIF50 | forced inspiratory flow at 50% of forced vital capacity |