| IO | incisal opening; inferior oblique; inferior olive; internal os; interorbital; intestinal obstruction... |
|---|---|
| IP | icterus praecox; imaging plate; immune precipitate; immunoblastic plasma; immunoperoxidase technique... |
| LBO | large bowel obstruction |
| MOIVC | membranous obstruction of the inferior vena cava |
| MOVC | membranous obstruction of inferior vena cava |