| IJV | internal jugular vein |
|---|---|
| IMV | inferior mesenteric vein; intermittent mandatory ventilation; intermittent mechanical ventilation; i... |
| INV | inferior nasal vein |
| IPV | inactivated poliomyelitis vaccine or virus; infectious pustular vaginitis; infectious pustular vulvo... |
| IRV | inferior radicular vein; inspiratory reserve volume; inverse ratio ventilation |